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Diff_ draft-palle-pce-controller-labeldb-sync-00.txt - draft-palle-pce-controller-labeldb-sync-01.txt.html
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Diff_ draft-palle-pce-controller-labeldb-sync-00.txt - draft-palle-pce-controller-labeldb-sync-01.txt.html
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<tbody><tr id="part-1" bgcolor="orange"><th></th><th><a href="https://tools.ietf.org/rfcdiff?url2=draft-palle-pce-controller-labeldb-sync-00.txt" style="color:#008; text-decoration:none;"><</a> <a href="https://tools.ietf.org/html/draft-palle-pce-controller-labeldb-sync-00.txt" style="color:#008">draft-palle-pce-controller-labeldb-sync-00.txt</a> </th><th> </th><th> <a href="https://tools.ietf.org/html/draft-palle-pce-controller-labeldb-sync-01.txt" style="color:#008">draft-palle-pce-controller-labeldb-sync-01.txt</a> <a href="https://tools.ietf.org/rfcdiff?url1=draft-palle-pce-controller-labeldb-sync-01.txt" style="color:#008; text-decoration:none;">></a></th><th></th></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">PCE Working Group U. Palle</td><td> </td><td class="right">PCE Working Group U. Palle</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Internet-Draft D. Dhody</td><td> </td><td class="right">Internet-Draft D. Dhody</td><td class="lineno"></td></tr>
<tr id="diff0001"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock">Intended status: <span class="delete">Experimental</span> Huawei Technologies</td><td> </td><td class="rblock">Intended status: <span class="insert">Standards Track S. Karunanithi</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">Expires: November 16, 2016 May 15, 2016</span></td><td> </td><td class="rblock"><span class="insert">Expires: December 30, 2017</span> Huawei Technologies</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> <span class="insert">June 28, 2017</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL-DB Synchronization Procedures for a PCE as a central</td><td> </td><td class="right"> LABEL-DB Synchronization Procedures for a PCE as a central</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> controller(PCECC)</td><td> </td><td class="right"> controller(PCECC)</td><td class="lineno"></td></tr>
<tr id="diff0002"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> draft-palle-pce-controller-labeldb-sync-0<span class="delete">0</span></td><td> </td><td class="rblock"> draft-palle-pce-controller-labeldb-sync-0<span class="insert">1</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Abstract</td><td> </td><td class="right">Abstract</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0003"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">[I-D.zhao-pce-pcep-extension-for-pce-controller] specify</span> the</td><td> </td><td class="rblock"> <span class="insert">PCE as a central controller specifies</span> the procedures and PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> procedures and PCEP protocol extensions <span class="delete">for using the PCE as the</span></td><td> </td><td class="rblock"> protocol extensions where LSPs are calculated/setup/initiated and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> central controller [I-D.zhao-teas-pce-control-function]</span> where LSPs</td><td> </td><td class="rblock"> label forwarding entries are downloaded through a centralized PCE</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> are calculated/setup/initiated and label forwarding entries are</td><td> </td><td class="rblock"> server to each network devices along the LSP path while leveraging</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> downloaded through a centralized PCE server to each network devices</td><td> </td><td class="rblock"> the existing PCE technologies as much as possible.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> along the LSP path while leveraging the existing PCE technologies as</td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> much as possible.</td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Labels downloaded to forwarding entries requires a reliable</td><td> </td><td class="right"> Labels downloaded to forwarding entries requires a reliable</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronization mechanism between the path computation clients (PCCs)</td><td> </td><td class="right"> synchronization mechanism between the path computation clients (PCCs)</td><td class="lineno"></td></tr>
<tr id="diff0004"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> and the <span class="delete">PCECC. This draft specify the label database synchronization</span></td><td> </td><td class="rblock"> and the <span class="insert">PCE. The basic</span> mechanism for label database <span class="insert">(LABEL-DB</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> mechanism for <span class="delete">managing of</span> label database <span class="delete">(LABEL-DB) at node (PCC)</span></td><td> </td><td class="rblock"><span class="insert"> synchronization is part of the PCE as a central controller</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> aligning with</span> LABEL-DB <span class="delete">at PCECC on initial session UP or session flap</span></td><td> </td><td class="rblock"><span class="insert"> specification. This document presents motivations for optimizations</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> and <span class="delete">specifies</span> the <span class="delete">required Path Computation Element Communication</span></td><td> </td><td class="rblock"><span class="insert"> to the</span> LABEL-DB <span class="insert">synchronization</span> and the <span class="insert">corresponding PCEP procedures</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Protocol (PCEP)</span> extensions.</td><td> </td><td class="rblock"><span class="insert"> and</span> extensions.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Status of This Memo</td><td> </td><td class="right">Status of This Memo</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> This Internet-Draft is submitted in full conformance with the</td><td> </td><td class="right"> This Internet-Draft is submitted in full conformance with the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> provisions of BCP 78 and BCP 79.</td><td> </td><td class="right"> provisions of BCP 78 and BCP 79.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Internet-Drafts are working documents of the Internet Engineering</td><td> </td><td class="right"> Internet-Drafts are working documents of the Internet Engineering</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Task Force (IETF). Note that other groups may also distribute</td><td> </td><td class="right"> Task Force (IETF). Note that other groups may also distribute</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> working documents as Internet-Drafts. The list of current Internet-</td><td> </td><td class="right"> working documents as Internet-Drafts. The list of current Internet-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td> </td><td class="right"> Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Internet-Drafts are draft documents valid for a maximum of six months</td><td> </td><td class="right"> Internet-Drafts are draft documents valid for a maximum of six months</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> and may be updated, replaced, or obsoleted by other documents at any</td><td> </td><td class="right"> and may be updated, replaced, or obsoleted by other documents at any</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> time. It is inappropriate to use Internet-Drafts as reference</td><td> </td><td class="right"> time. It is inappropriate to use Internet-Drafts as reference</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> material or to cite them other than as "work in progress."</td><td> </td><td class="right"> material or to cite them other than as "work in progress."</td><td class="lineno"></td></tr>
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<tr id="diff0005"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> This Internet-Draft will expire on <span class="delete">November 16, 2016</span>.</td><td> </td><td class="rblock"> This Internet-Draft will expire on <span class="insert">December 30, 2017</span>.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Copyright Notice</td><td> </td><td class="right">Copyright Notice</td><td class="lineno"></td></tr>
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<tr id="diff0006"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Copyright (c) 201<span class="delete">6</span> IETF Trust and the persons identified as the</td><td> </td><td class="rblock"> Copyright (c) 201<span class="insert">7</span> IETF Trust and the persons identified as the</td><td class="lineno"></td></tr>
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<tr><td class="lineno"></td><td class="left"> include Simplified BSD License text as described in Section 4.e of</td><td> </td><td class="right"> include Simplified BSD License text as described in Section 4.e of</td><td class="lineno"></td></tr>
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<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Table of Contents</td><td> </td><td class="right">Table of Contents</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0007"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">2</span></td><td> </td><td class="rblock"> 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">3</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3</td><td> </td><td class="right"> 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 2. LABEL-DB Synchronization . . . . . . . . . . . . . . . . . . 3</td><td> </td><td class="right"> 2. LABEL-DB Synchronization . . . . . . . . . . . . . . . . . . 3</td><td class="lineno"></td></tr>
<tr id="diff0008"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> 3. <span class="delete">Full LABEL-DB Synchronization procedure . . . . . . . . . . . 3</span></td><td> </td><td class="rblock"> 3. Optimizations for LABEL-DB Synchronization . . . . . . . . . <span class="insert">4</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 4.</span> Optimizations for LABEL-DB Synchronization . . . . . . . . . <span class="delete">6</span></td><td> </td><td class="rblock"><span class="insert"> 3.1.</span> LABEL-DB Synchronization Avoidance Procedure . . . . . . <span class="insert">4</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 4.1.</span> LABEL-DB Synchronization Avoidance Procedure . . . . . . <span class="delete">6</span></td><td> </td><td class="rblock"><span class="insert"> 3.2.</span> Incremental LABEL-DB Synchronization Procedure . . . . . <span class="insert">8</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 4.2.</span> Incremental LABEL-DB Synchronization Procedure . . . . . <span class="delete">10</span></td><td> </td><td class="rblock"><span class="insert"> 4.</span> PCEP Extensions . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">10</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 5.</span> PCEP Extensions . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">12</span></td><td> </td><td class="rblock"><span class="insert"> 4.1.</span> Extension of SRP object . . . . . . . . . . . . . . . . . <span class="insert">10</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 5.1.</span> Extension of SRP object . . . . . . . . . . . . . . . . . <span class="delete">12</span></td><td> </td><td class="rblock"><span class="insert"> 4.2.</span> Extension of PCECC Capability TLV . . . . . . . . . . . . <span class="insert">10</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 5.2.</span> Extension of PCECC Capability TLV . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock"><span class="insert"> 4.3.</span> New LABEL-DB-VERSION TLV . . . . . . . . . . . . . . . . <span class="insert">11</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 5.3.</span> New LABEL-DB-VERSION TLV . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock"><span class="insert"> 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> 6. Manageability Considerations . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"><span class="insert"> 5.1. PCEP TLV Type Indicators . . . . . . . . . . . . . . . . 12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 7. Security Considerations</span> . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"><span class="insert"> 5.2. PCECC-CAPABILITY TLV . . . . . . . . . . . . . . . . . . 12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 8. IANA Considerations</span> . . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"> 6. Manageability Considerations . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 9.</span> Acknowledgements . . . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"><span class="insert"> 6.1. Control of Function and Policy</span> . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 10.</span> References . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"><span class="insert"> 6.2. Information and Data Models</span> . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 10.1.</span> Normative References . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock"><span class="insert"> 6.3. Liveness Detection and Monitoring</span> . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 10.2.</span> Informative References . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock"><span class="insert"> 6.4. Verify Correct Operations . . . . . . . . . . . . . . . . 12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock"><span class="insert"> 6.5. Requirements On Other Protocols . . . . . . . . . . . . . 12</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 6.6. Impact On Network Operations . . . . . . . . . . . . . . 13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 7. Security Considerations . . . . . . . . . . . . . . . . . . . 13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 8.</span> Acknowledgements . . . . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 9.</span> References . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 9.1.</span> Normative References . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 9.2.</span> Informative References . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">1. Introduction</td><td> </td><td class="right">1. Introduction</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0009"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> [I-D.zhao-pce-pcep-extension-for-pce-controller] <span class="delete"> </span>specify the</td><td> </td><td class="rblock"> [I-D.zhao-pce-pcep-extension-for-pce-controller] specify the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> procedures and PCEP protocol extensions for using the PCE as the</td><td> </td><td class="right"> procedures and PCEP protocol extensions for using the PCE as the</td><td class="lineno"></td></tr>
<tr id="diff0010"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> central controller <span class="delete">[I-D.zhao-teas-pce-control-function]</span> and user</td><td> </td><td class="rblock"> central controller <span class="insert">[I-D.ietf-teas-pce-central-control]</span> and user cases</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> cases where LSPs are calculated/setup/initiated/downloaded through</td><td> </td><td class="rblock"> where LSPs are calculated/setup/initiated/downloaded through</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> extending the existing PCE architectures and PCEP.</td><td> </td><td class="right"> extending the existing PCE architectures and PCEP.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0011"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">Labels downloaded to forwarding entries requires a</span> reliable</td><td> </td><td class="rblock"> <span class="insert">[I-D.zhao-pce-pcep-extension-for-pce-controller] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> synchronization mechanism between the path computation clients (PCCs)</td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller] specifies</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> and the PCECC. <span class="delete">This draft specify the PCECC maintenance of label</span></td><td> </td><td class="rblock"> reliable synchronization mechanism between the path computation</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> database per session, and describes the label database(LABEL-DB)</span></td><td> </td><td class="rblock"> clients (PCCs) and the PCECC.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> synchronization mechanism for managing of label database at node</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> (PCC) aligning with label database at PCECC on initial session UP or</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> session flap and specifies the required Path Computation Element</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Communication Protocol (PCEP) extensions.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> This draft specify the optimizations for LABEL-DB synchronization and</td><td> </td><td class="right"> This draft specify the optimizations for LABEL-DB synchronization and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> the corresponding PCEP procedures and extensions.</td><td> </td><td class="right"> the corresponding PCEP procedures and extensions.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">1.1. Requirements Language</td><td> </td><td class="right">1.1. Requirements Language</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td> </td><td class="right"> The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td> </td><td class="right"> "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> document are to be interpreted as described in [RFC2119].</td><td> </td><td class="right"> document are to be interpreted as described in [RFC2119].</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="part-2" class="change"><td></td><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-2"><em> page 3, line 30<span class="hide"> ¶</span></em></a></th><th> </th><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-2"><em> page 3, line 38<span class="hide"> ¶</span></em></a></th><td></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC MUST maintains the LABEL-DB for each PCEP session separately.</td><td> </td><td class="right"> PCECC MUST maintains the LABEL-DB for each PCEP session separately.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The purpose of LABEL-DB synchronization is to make sure that the</td><td> </td><td class="right"> The purpose of LABEL-DB synchronization is to make sure that the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC's view of LABEL-DB matches with the PCC's LABEL-DB. The LABEL-</td><td> </td><td class="right"> PCECC's view of LABEL-DB matches with the PCC's LABEL-DB. The LABEL-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> DB synchronization MUST be performed from PCECC to PCC immediately</td><td> </td><td class="right"> DB synchronization MUST be performed from PCECC to PCC immediately</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> after the LSP state synchronization. [I-D.ietf-pce-stateful-pce]</td><td> </td><td class="right"> after the LSP state synchronization. [I-D.ietf-pce-stateful-pce]</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> describes the basic mechanism for LSP state synchronization.</td><td> </td><td class="right"> describes the basic mechanism for LSP state synchronization.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.ietf-pce-stateful-sync-optimizations] describes the</td><td> </td><td class="right"> [I-D.ietf-pce-stateful-sync-optimizations] describes the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> optimizations for LSP state synchronization.</td><td> </td><td class="right"> optimizations for LSP state synchronization.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0012"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">By default a</span> Full LABEL-DB <span class="delete">is</span> performed from PCECC to PCC on Initial</td><td> </td><td class="rblock"> Full LABEL-DB <span class="insert">synchronization</span> performed from PCECC to PCC on Initial</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> session UP or every session <span class="delete">flap. see Section 3 for detail</span></td><td> </td><td class="rblock"> session UP or every session <span class="insert">flap is described in</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> procedures.</span></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-pce-controller] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller].</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0013"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">But a Full LABEL-DB synchronization is not always necessary following</span></td><td> </td><td class="rblock"> <span class="insert">Providing</span> an Optimizations for LABEL-DB synchronization can result in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> a PCEP session restart and providing</span> an Optimizations for LABEL-DB</td><td> </td><td class="rblock"> significant savings in both <span class="insert">control-plane</span> data exchanges and the time</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> synchronization can result in significant savings in both <span class="delete">control-</span></td><td> </td><td class="rblock"> it takes for the PCC to become fully operational.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> plane</span> data exchanges and the time it takes for the PCC to become</td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> fully operational.</td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Optimizations for LABEL-DB synchronization describes the need that</td><td> </td><td class="right"> Optimizations for LABEL-DB synchronization describes the need that</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> both PCEP speakers support label database version capability and</td><td> </td><td class="right"> both PCEP speakers support label database version capability and</td><td class="lineno"></td></tr>
<tr id="diff0014"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> maintain label database version for each session. See Section <span class="delete">4</span> for</td><td> </td><td class="rblock"> maintain label database version for each session. See Section <span class="insert">3</span> for</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> detail procedures.</td><td> </td><td class="right"> detail procedures.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0015"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock">3. <span class="delete">Full LABEL-DB Synchronization procedure</span></td><td> </td><td class="rblock">3. Optimizations for LABEL-DB Synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> During Full LABEL-DB Synchronization, a PCECC first takes a snapshot</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> of the label database for the session, then sends this snapshot to</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> the PCC in a sequence of Label Update message (PCLabelUpd message</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> defined in [I-D.zhao-pce-pcep-extension-for-pce-controller]). Each</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> PCLabelUpd message sent during LABEL-DB Synchronization has the SYNC</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Flag in the SRP Object(see Section 5.1) set to 1.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The end of synchronization marker is a PCLabelUpd message with the</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> SYNC Flag set to 0 for SRP Object with Label equal to reserved value</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 0 in the LABEL object</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> ([I-D.zhao-pce-pcep-extension-for-pce-controller]). If the PCECC has</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> no label to synchronize, it will only send the end of synchronization</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> marker.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> A PCECC SHOULD NOT send PCUpd messages to a PCC before LABEL-DB</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Synchronization is complete.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Either the PCECC or the PCC MAY terminate the session using the PCEP</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> session termination procedures during the LABEL-DB synchronization</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> phase. If the session is terminated, the PCC MUST clean up label(s)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> it received from this PCECC. The session reestablishment MUST be re-</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> attempted as per the procedures defined in [RFC5440], including use</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> of a back-off timer.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The PCC does not send positive acknowledgements for properly received</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> label database synchronization messages. It MUST respond with a</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> PCErr message with Error-type TBD1 (Label Database Synchronization</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Error) and Error-value 1 (indicating an error in processing the</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> PCLabelUpd) if it encounters a problem with the Label Update it</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> received from the PCECC and it MUST terminate the session.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> If the PCECC encounters a problem which prevents it from completing</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> the label transfer, it MUST send a PCErr message with Error-type TBD1</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> (Label Database Synchronization Error) and Error-value 2 (indicating</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> an internal PCECC Error) to the PCC and terminate the session.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The successful LABEL-DB Synchronization sequence is shown in</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Figure 1.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |PCECC| |PCC|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=1----->| (Sync start)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=1----->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=1----->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=0----->| (End of sync marker</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | | Label Update</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | | LABEL=0)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | | (Sync done)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Figure 1: Successful LABEL-DB synchronization</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The sequence where the PCC fails during the LABEL-DB Synchronization</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> phase is shown in Figure 2.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |PCECC| |PCC|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |--------PCLabelUpd, SYNC=1----->| (Sync start)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |--------PCLabelUpd, SYNC=1----->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |--------PCLabelUpd, SYNC=1----->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |---PCLabelUpd, SYNC=1 |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | \ ,----PCErr ----|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | \ / |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | \/ |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | /\ |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | / `------------->| (Ignored)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |<-----------` |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Figure 2: Failed LABEL-DB synchronization(PCC failure)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The sequence where the PCECC fails during the LABEL-DB</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Synchronization phase is shown in Figure 3.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |PCECC| |PCC|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+ +-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=1----->| (Sync start)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |-----PCLabelUpd, SYNC=1----->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | . |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> |----------- PCErr=? -------->|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Figure 3: Failed LABEL-DB synchronization(PCECC failure)</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">4.</span> Optimizations for LABEL-DB Synchronization</td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> This section add some of the optimization mechanisms for LABEL-DB</td><td> </td><td class="right"> This section add some of the optimization mechanisms for LABEL-DB</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronization. By default, the full LABEL-DB synchronization is</td><td> </td><td class="right"> synchronization. By default, the full LABEL-DB synchronization is</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> performed.</td><td> </td><td class="right"> performed.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0016"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">4</span>.1. LABEL-DB Synchronization Avoidance Procedure</td><td> </td><td class="rblock"><span class="insert">3</span>.1. LABEL-DB Synchronization Avoidance Procedure</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The LABEL-DB synchronization MAY be skipped following a PCEP session</td><td> </td><td class="right"> The LABEL-DB synchronization MAY be skipped following a PCEP session</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> restart if there is no change in the LABEL-DB of the session at</td><td> </td><td class="right"> restart if there is no change in the LABEL-DB of the session at</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC, during the period prior to session re-initialization. To be</td><td> </td><td class="right"> PCECC, during the period prior to session re-initialization. To be</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> able to make this determination, labels must be exchanged and</td><td> </td><td class="right"> able to make this determination, labels must be exchanged and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> maintained by both PCECC and PCC during normal operation. This is</td><td> </td><td class="right"> maintained by both PCECC and PCC during normal operation. This is</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> accomplished by keeping track of the changes to the label database,</td><td> </td><td class="right"> accomplished by keeping track of the changes to the label database,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> using a version tracking field called the Label Database Version</td><td> </td><td class="right"> using a version tracking field called the Label Database Version</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Number.</td><td> </td><td class="right"> Number.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The Label Database Version Number, carried in LABEL-DB-VERSION TLV</td><td> </td><td class="right"> The Label Database Version Number, carried in LABEL-DB-VERSION TLV</td><td class="lineno"></td></tr>
<tr id="diff0017"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> (see Section <span class="delete">5</span>.3), is owned by a PCECC and it MUST be incremented by</td><td> </td><td class="rblock"> (see Section <span class="insert">4</span>.3), is owned by a PCECC and it MUST be incremented by</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 1 for each successive change in the PCECC's label database. The</td><td> </td><td class="right"> 1 for each successive change in the PCECC's label database. The</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Label Database Version Number MUST start at 1 and may wrap around.</td><td> </td><td class="right"> Label Database Version Number MUST start at 1 and may wrap around.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Values 0 and 0xFFFFFFFFFFFFFFFF are reserved. If either of the two</td><td> </td><td class="right"> Values 0 and 0xFFFFFFFFFFFFFFFF are reserved. If either of the two</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> values are used during LABEL-DB synchronization, the PCC speaker</td><td> </td><td class="right"> values are used during LABEL-DB synchronization, the PCC speaker</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> receiving this node should send back a PCErr with Error-type TBD1</td><td> </td><td class="right"> receiving this node should send back a PCErr with Error-type TBD1</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Error-value 3 'Received an invalid Label Database Version Number',</td><td> </td><td class="right"> Error-value 3 'Received an invalid Label Database Version Number',</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> and close the PCEP session. Operations that trigger a change to the</td><td> </td><td class="right"> and close the PCEP session. Operations that trigger a change to the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Label database include an addition or deletion of labels that would</td><td> </td><td class="right"> Label database include an addition or deletion of labels that would</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> trigger a label update to the PCC.</td><td> </td><td class="right"> trigger a label update to the PCC.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL-DB synchronization avoidance is advertised on a PCEP session</td><td> </td><td class="right"> LABEL-DB synchronization avoidance is advertised on a PCEP session</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> during session startup using the INCLUDE-LABEL-DB-VERSION (I) bit in</td><td> </td><td class="right"> during session startup using the INCLUDE-LABEL-DB-VERSION (I) bit in</td><td class="lineno"></td></tr>
<tr id="diff0018"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> the PCECC capability TLV (see Section <span class="delete">5</span>.2). The PCEP peer MAY</td><td> </td><td class="rblock"> the PCECC capability TLV (see Section <span class="insert">4</span>.2). The PCEP peer MAY</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> include the SPEAKER-ENTITY-ID TLV described in</td><td> </td><td class="right"> include the SPEAKER-ENTITY-ID TLV described in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.ietf-pce-stateful-sync-optimizations] in the OPEN message to</td><td> </td><td class="right"> [I-D.ietf-pce-stateful-sync-optimizations] in the OPEN message to</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> identify the peer in case of IP address change.</td><td> </td><td class="right"> identify the peer in case of IP address change.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If both PCEP speakers set the I flag in the OPEN object's PCECC</td><td> </td><td class="right"> If both PCEP speakers set the I flag in the OPEN object's PCECC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Capability TLV to 1, the PCECC MUST include the LABEL-DB-VERSION TLV</td><td> </td><td class="right"> Capability TLV to 1, the PCECC MUST include the LABEL-DB-VERSION TLV</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> in each LABEL object of the PCLabelUpd message. If the LABEL-DB-</td><td> </td><td class="right"> in each LABEL object of the PCLabelUpd message. If the LABEL-DB-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> VERSION TLV is missing in a PCLabelUpd message, the PCC will generate</td><td> </td><td class="right"> VERSION TLV is missing in a PCLabelUpd message, the PCC will generate</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> an error with Error-Type 6 (mandatory object missing) and Error-Value</td><td> </td><td class="right"> an error with Error-Type 6 (mandatory object missing) and Error-Value</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> TBD2 'LABEL-DB-VERSION TLV missing' and close the session. If LABEL-</td><td> </td><td class="right"> TBD2 'LABEL-DB-VERSION TLV missing' and close the session. If LABEL-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="part-3" class="change"><td></td><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-3"><em> page 7, line 36<span class="hide"> ¶</span></em></a></th><th> </th><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-3"><em> page 5, line 16<span class="hide"> ¶</span></em></a></th><td></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC's Label Database survived the restart of a PCEP session, the</td><td> </td><td class="right"> PCECC's Label Database survived the restart of a PCEP session, the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC will include the LABEL-DB-VERSION TLV in its OPEN object and</td><td> </td><td class="right"> PCECC will include the LABEL-DB-VERSION TLV in its OPEN object and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> the TLV will contain the latest Label Database Version Number. If a</td><td> </td><td class="right"> the TLV will contain the latest Label Database Version Number. If a</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCEP speaker's label database did not survive the restart of a PCEP</td><td> </td><td class="right"> PCEP speaker's label database did not survive the restart of a PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> session, the PCEP speaker MUST NOT include the LABEL-DB-VERSION TLV</td><td> </td><td class="right"> session, the PCEP speaker MUST NOT include the LABEL-DB-VERSION TLV</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> in the OPEN object.</td><td> </td><td class="right"> in the OPEN object.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If both PCEP speakers include the LABEL-DB-VERSION TLV in the OPEN</td><td> </td><td class="right"> If both PCEP speakers include the LABEL-DB-VERSION TLV in the OPEN</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Object and the TLV values match, the PCECC MAY skip LABEL-DB</td><td> </td><td class="right"> Object and the TLV values match, the PCECC MAY skip LABEL-DB</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronization. Otherwise, the PCECC MUST perform full LABEL-DB</td><td> </td><td class="right"> synchronization. Otherwise, the PCECC MUST perform full LABEL-DB</td><td class="lineno"></td></tr>
<tr id="diff0019"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> synchronization <span class="delete">(see Section 3)</span> or incremental LABEL-DB</td><td> </td><td class="rblock"> synchronization <span class="insert">([I-D.zhao-pce-pcep-extension-for-pce-controller] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> synchronization (see Section <span class="delete">4.2)</span> to the PCC, Incase, the PCECC</td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller])</span> or incremental</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> attempts to skip LABEL-DB synchronization, by setting the SYNC Flag</td><td> </td><td class="rblock"> LABEL-DB synchronization (see Section <span class="insert">3.2)</span> to the PCC, Incase, the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> to 0 on the first Label Update from the PCECC, the PCC MUST send back</td><td> </td><td class="rblock"> PCECC attempts to skip LABEL-DB synchronization, by setting the SYNC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> a PCErr with Error-type TBD1 (Label Database Synchronization Error)</td><td> </td><td class="rblock"> Flag to 0 on the first Label Update from the PCECC, the PCC MUST send</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> and Error-value 4(Label Database Version mismatch), and close the</td><td> </td><td class="rblock"> back a PCErr with Error-type TBD1 (Label Database Synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> PCEP session.</td><td> </td><td class="rblock"> Error) and Error-value 4(Label Database Version mismatch), and close</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> the PCEP session.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If LABEL-DB synchronization is required, then prior to completing the</td><td> </td><td class="right"> If LABEL-DB synchronization is required, then prior to completing the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> initialization phase, the PCC MUST mark any labels in the label</td><td> </td><td class="right"> initialization phase, the PCC MUST mark any labels in the label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> database that were previously updated by the PCECC as stale. When</td><td> </td><td class="right"> database that were previously updated by the PCECC as stale. When</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> the PCECC updates a label during LABEL-DB synchronization, if the</td><td> </td><td class="right"> the PCECC updates a label during LABEL-DB synchronization, if the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> label already exists in the label database, the PCC MUST update the</td><td> </td><td class="right"> label already exists in the label database, the PCC MUST update the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> label database and clear the stale marker from the label. When it</td><td> </td><td class="right"> label database and clear the stale marker from the label. When it</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> has finished LABEL-DB synchronization, the PCECC MUST immediately</td><td> </td><td class="right"> has finished LABEL-DB synchronization, the PCECC MUST immediately</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> send an end of synchronization marker. The end of synchronization</td><td> </td><td class="right"> send an end of synchronization marker. The end of synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> marker is a Path Computation Label Update (PCLabelUpd) message with a</td><td> </td><td class="right"> marker is a Path Computation Label Update (PCLabelUpd) message with a</td><td class="lineno"></td></tr>
<tr id="diff0020"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> SRP object containing the SYNC flag set to 0 (see Section <span class="delete">5</span>.1) and</td><td> </td><td class="rblock"> SRP object containing the SYNC flag set to 0 (see Section <span class="insert">4</span>.1) and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Label as 0 in the LABEL object. The LABEL-DB-VERSION TLV MUST be</td><td> </td><td class="right"> Label as 0 in the LABEL object. The LABEL-DB-VERSION TLV MUST be</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> included in this PCLabelUpd message. On receiving this Label Update,</td><td> </td><td class="right"> included in this PCLabelUpd message. On receiving this Label Update,</td><td class="lineno"></td></tr>
<tr id="diff0021"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> the PCC MUST <span class="delete">purge any</span> labels <span class="delete">from</span> the label database that are still</td><td> </td><td class="rblock"> the PCC MUST <span class="insert">report all the</span> labels <span class="insert">in</span> the label database that are</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> marked as <span class="delete">stale.</span></td><td> </td><td class="rblock"> still marked as <span class="insert">stale to PCECC.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Note that a PCECC/PCC MAY force LABEL-DB synchronization by not</td><td> </td><td class="right"> Note that a PCECC/PCC MAY force LABEL-DB synchronization by not</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> including the LABEL-DB-VERSION TLV in its OPEN object.</td><td> </td><td class="right"> including the LABEL-DB-VERSION TLV in its OPEN object.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0022"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">4</span> shows an example sequence where the LABEL-DB synchronization</td><td> </td><td class="rblock"> Figure <span class="insert">1</span> shows an example sequence where the LABEL-DB synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> is skipped.</td><td> </td><td class="right"> is skipped.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |PCECC| |PCC|</td><td> </td><td class="right"> |PCECC| |PCC|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | ,----Open---|</td><td> </td><td class="right"> | ,----Open---|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | / DBv=35 |</td><td> </td><td class="right"> | / DBv=35 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--Open--, / I=1 |</td><td> </td><td class="right"> |--Open--, / I=1 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | DBv=35 \ / |</td><td> </td><td class="right"> | DBv=35 \ / |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | I=1 \ / |</td><td> </td><td class="right"> | I=1 \ / |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="part-4" class="change"><td></td><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-4"><em> page 8, line 39<span class="hide"> ¶</span></em></a></th><th> </th><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-4"><em> page 6, line 28<span class="hide"> ¶</span></em></a></th><td></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=36,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=36,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=37,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=37,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=38,SYNC=0-->|</td><td> </td><td class="right"> |--PCLabelUpd,DBv=38,SYNC=0-->|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0023"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">4</span>: LABEL-DB synchronization Skipped</td><td> </td><td class="rblock"> Figure <span class="insert">1</span>: LABEL-DB synchronization Skipped</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0024"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">5</span> shows an example sequence where the LABEL-DB synchronization</td><td> </td><td class="rblock"> Figure <span class="insert">2</span> shows an example sequence where the LABEL-DB synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> is performed due to label database version mismatch during the PCEP</td><td> </td><td class="right"> is performed due to label database version mismatch during the PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> session setup. Note that the same LABEL-DB synchronization sequence</td><td> </td><td class="right"> session setup. Note that the same LABEL-DB synchronization sequence</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> would happen if either the PCC or the PCECC would not include the</td><td> </td><td class="right"> would happen if either the PCC or the PCECC would not include the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL- DB-VERSION TLV in their respective Open messages.</td><td> </td><td class="right"> LABEL- DB-VERSION TLV in their respective Open messages.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |PCECC| |PCC|</td><td> </td><td class="right"> |PCECC| |PCC|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | ,----Open---|</td><td> </td><td class="right"> | ,----Open---|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | / DBv=35 |</td><td> </td><td class="right"> | / DBv=35 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="part-5" class="change"><td></td><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-5"><em> page 9, line 23<span class="hide"> ¶</span></em></a></th><th> </th><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-5"><em> page 7, line 23<span class="hide"> ¶</span></em></a></th><td></td></tr>
<tr><td class="lineno"></td><td class="left"> | \/ |</td><td> </td><td class="right"> | \/ |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | /\ |</td><td> </td><td class="right"> | /\ |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | / `------------->| (Expect sync)</td><td> </td><td class="right"> | / `------------->| (Expect sync)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> (Do sync) |<--------` |</td><td> </td><td class="right"> (Do sync) |<--------` |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=39,SYNC=1-->| (Sync start)</td><td> </td><td class="right"> |--PCLabelUpd,DBv=39,SYNC=1-->| (Sync start)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=39,SYNC=0-->| (Sync done)</td><td> </td><td class="right"> |--PCLabelUpd,DBv=39,SYNC=0-->| (Sync done)</td><td class="lineno"></td></tr>
<tr id="diff0025"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> | . <span class="delete">|(Purge Label</span></td><td> </td><td class="rblock"> | . <span class="insert">|</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> | . | <span class="delete">if applicable)</span></td><td> </td><td class="rblock"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=40,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=40,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=41,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=41,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=42,SYNC=0-->|</td><td> </td><td class="right"> |--PCLabelUpd,DBv=42,SYNC=0-->|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0026"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">5</span>: LABEL-DB synchronization Performed</td><td> </td><td class="rblock"> Figure <span class="insert">2</span>: LABEL-DB synchronization Performed</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0027"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">6</span> shows an example sequence where the LABEL-DB synchronization</td><td> </td><td class="rblock"> Figure <span class="insert">3</span> shows an example sequence where the LABEL-DB synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> is skipped, but because one or both PCEP speakers set the I Flag to</td><td> </td><td class="right"> is skipped, but because one or both PCEP speakers set the I Flag to</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 0, the PCECC does not send LABEL-DB-VERSION TLVs in subsequent</td><td> </td><td class="right"> 0, the PCECC does not send LABEL-DB-VERSION TLVs in subsequent</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCLabelUpd messages to the PCC. If the current PCEP session</td><td> </td><td class="right"> PCLabelUpd messages to the PCC. If the current PCEP session</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> restarts, the PCEP speakers will have to perform full LABEL-DB</td><td> </td><td class="right"> restarts, the PCEP speakers will have to perform full LABEL-DB</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronization, since the PCC does not know the PCECC's latest Label</td><td> </td><td class="right"> synchronization, since the PCC does not know the PCECC's latest Label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Database Version Number information.</td><td> </td><td class="right"> Database Version Number information.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |PCECC| |PCC|</td><td> </td><td class="right"> |PCECC| |PCC|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="part-6" class="change"><td></td><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-6"><em> page 10, line 27<span class="hide"> ¶</span></em></a></th><th> </th><th><small>skipping to change at</small><a href="https://tools.ietf.org/rfcdiff#part-6"><em> page 8, line 27<span class="hide"> ¶</span></em></a></th><td></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |------PCLabelUpd,SYNC=0----->| (Regular</td><td> </td><td class="right"> |------PCLabelUpd,SYNC=0----->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |------PCLabelUpd,SYNC=0----->| (Regular</td><td> </td><td class="right"> |------PCLabelUpd,SYNC=0----->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |------PCLabelUpd,SYNC=0----->|</td><td> </td><td class="right"> |------PCLabelUpd,SYNC=0----->|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0028"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">6</span>: LABEL-DB Synchronization Skipped, no LABEL-DB-VERSION TLVs</td><td> </td><td class="rblock"> Figure <span class="insert">3</span>: LABEL-DB Synchronization Skipped, no LABEL-DB-VERSION TLVs</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> sent from PCECC</td><td> </td><td class="right"> sent from PCECC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0029"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">4</span>.2. Incremental LABEL-DB Synchronization Procedure</td><td> </td><td class="rblock"><span class="insert">3</span>.2. Incremental LABEL-DB Synchronization Procedure</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If a PCC restarts and its label database survived, PCECC with</td><td> </td><td class="right"> If a PCC restarts and its label database survived, PCECC with</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> mismatched Label Database Version Number will send all their Labels</td><td> </td><td class="right"> mismatched Label Database Version Number will send all their Labels</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> information (full LABEL-DB) to the PCC, even if only a small number</td><td> </td><td class="right"> information (full LABEL-DB) to the PCC, even if only a small number</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> of changes happened. It can take a long time and consume large</td><td> </td><td class="right"> of changes happened. It can take a long time and consume large</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> communication channel bandwidth.</td><td> </td><td class="right"> communication channel bandwidth.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> This section extends the idea to only synchronize the delta (changes)</td><td> </td><td class="right"> This section extends the idea to only synchronize the delta (changes)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> in case of Label Database Version Number of both PCEP peers is non-</td><td> </td><td class="right"> in case of Label Database Version Number of both PCEP peers is non-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> zero and mismatch.</td><td> </td><td class="right"> zero and mismatch.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If both PCEP speakers include the LABEL-DB-VERSION TLV in the OPEN</td><td> </td><td class="right"> If both PCEP speakers include the LABEL-DB-VERSION TLV in the OPEN</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> object and the LABEL-DB-VERSION TLV values match, the PCECC MAY skip</td><td> </td><td class="right"> object and the LABEL-DB-VERSION TLV values match, the PCECC MAY skip</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL-DB synchronization. Otherwise, the PCECC MUST perform LABEL-DB</td><td> </td><td class="right"> LABEL-DB synchronization. Otherwise, the PCECC MUST perform LABEL-DB</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronization. Incremental label database synchronization</td><td> </td><td class="right"> synchronization. Incremental label database synchronization</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> capability is advertised on a PCEP session during session startup</td><td> </td><td class="right"> capability is advertised on a PCEP session during session startup</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> using the DELTA-LABEL-SYNC-CAPABILITY (D) bit in the capabilities TLV</td><td> </td><td class="right"> using the DELTA-LABEL-SYNC-CAPABILITY (D) bit in the capabilities TLV</td><td class="lineno"></td></tr>
<tr id="diff0030"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> (see Section <span class="delete">5</span>.2). Instead of dumping full LABEL-DB to the PCC</td><td> </td><td class="rblock"> (see Section <span class="insert">4</span>.2). Instead of dumping full LABEL-DB to the PCC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> again, the PCECC synchronizes the delta (changes) as described in</td><td> </td><td class="right"> again, the PCECC synchronizes the delta (changes) as described in</td><td class="lineno"></td></tr>
<tr id="diff0031"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">7</span> when D flag and I flag is set to 1 by both PCC and PCECC.</td><td> </td><td class="rblock"> Figure <span class="insert">4</span> when D flag and I flag is set to 1 by both PCC and PCECC.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Other combinations of D and I flags setting by PCC and PCECC result</td><td> </td><td class="right"> Other combinations of D and I flags setting by PCC and PCECC result</td><td class="lineno"></td></tr>
<tr id="diff0032"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> in full LABEL-DB synchronization procedure as described in<span class="delete"> Section 3.</span></td><td> </td><td class="rblock"> in full LABEL-DB synchronization procedure as described in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0033"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> The PCECC MAY force a full LABEL-DB synchronization by setting the D</td><td> </td><td class="rblock"> <span class="insert">[I-D.zhao-pce-pcep-extension-for-pce-controller] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> flag to zero in the OPEN message.</td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller].</span> The PCECC MAY</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> force a full LABEL-DB synchronization by setting the D flag to zero</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> in the OPEN message.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |PCECC| |PCC|</td><td> </td><td class="right"> |PCECC| |PCC|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+ +-+-+</td><td> </td><td class="right"> +-+-+-+ +-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | ,----Open---|</td><td> </td><td class="right"> | ,----Open---|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | / DBv=35 |</td><td> </td><td class="right"> | / DBv=35 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--Open--, / I=1 |</td><td> </td><td class="right"> |--Open--, / I=1 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | DBv=39 \ / D=1 |</td><td> </td><td class="right"> | DBv=39 \ / D=1 |</td><td class="lineno"></td></tr>
<tr id="diff0034"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> | I=<span class="delete">0</span> \ / |</td><td> </td><td class="rblock"> | I=<span class="insert">1</span> \ / |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | \/ |</td><td> </td><td class="right"> | \/ |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | /\ |</td><td> </td><td class="right"> | /\ |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | / `------------->| (Expect Delta sync)</td><td> </td><td class="right"> | / `------------->| (Expect Delta sync)</td><td class="lineno"></td></tr>
<tr id="diff0035"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> (Do sync)|<--------` |<span class="delete"> (DONOT Purge Label)</span></td><td> </td><td class="rblock"> (Do sync)|<--------` |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> (Delta) | |</td><td> </td><td class="right"> (Delta) | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> (Delta |--PCLabelUpd,DBv=39,SYNC=1-->|</td><td> </td><td class="right"> (Delta |--PCLabelUpd,DBv=39,SYNC=1-->|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Sync starts) | . |</td><td> </td><td class="right"> Sync starts) | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | . |</td><td> </td><td class="right"> | . |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=39,SYNC=0-->| (Sync done)</td><td> </td><td class="right"> |--PCLabelUpd,DBv=39,SYNC=0-->| (Sync done)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=40,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=40,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=41,SYNC=0-->| (Regular</td><td> </td><td class="right"> |--PCLabelUpd,DBv=41,SYNC=0-->| (Regular</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | | Label Update)</td><td> </td><td class="right"> | | Label Update)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> |--PCLabelUpd,DBv=42,SYNC=0-->|</td><td> </td><td class="right"> |--PCLabelUpd,DBv=42,SYNC=0-->|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0036"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">7</span>: Incremental Synchronization Procedure</td><td> </td><td class="rblock"> Figure <span class="insert">4</span>: Incremental Synchronization Procedure</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0037"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> As per Section <span class="delete">4</span>.1, the Label Database Version Number is incremented</td><td> </td><td class="rblock"> As per Section <span class="insert">3</span>.1, the Label Database Version Number is incremented</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> each time a change is made to the PCECC's label database. Each label</td><td> </td><td class="right"> each time a change is made to the PCECC's label database. Each label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> is associated with the DB version at the time of its addition. This</td><td> </td><td class="right"> is associated with the DB version at the time of its addition. This</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> is needed to determine which label and what information needs to be</td><td> </td><td class="right"> is needed to determine which label and what information needs to be</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> synchronized in incremental LABEL-DB synchronization.</td><td> </td><td class="right"> synchronized in incremental LABEL-DB synchronization.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> It is not necessary for a PCECC to store a complete history of label</td><td> </td><td class="right"> It is not necessary for a PCECC to store a complete history of label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> database change, but rather remember the labels (including label</td><td> </td><td class="right"> database change, but rather remember the labels (including label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> addition and deletion) that happened between the PCEP session(s)</td><td> </td><td class="right"> addition and deletion) that happened between the PCEP session(s)</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> restart in order to carry out incremental LABEL-DB synchronization.</td><td> </td><td class="right"> restart in order to carry out incremental LABEL-DB synchronization.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> After the synchronization procedure finishes, the PCECC can dump this</td><td> </td><td class="right"> After the synchronization procedure finishes, the PCECC can dump this</td><td class="lineno"></td></tr>
<tr id="diff0038"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> history information. In the example shown in Figure <span class="delete">7</span>, the PCECC</td><td> </td><td class="rblock"> history information. In the example shown in Figure <span class="insert">4</span>, the PCECC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> needs to store the label changes that happened between DB Version 35</td><td> </td><td class="right"> needs to store the label changes that happened between DB Version 35</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> to 39 and synchronizes these changes only when performing incremental</td><td> </td><td class="right"> to 39 and synchronizes these changes only when performing incremental</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> label update. So a PCECC needs to remember at least the label</td><td> </td><td class="right"> label update. So a PCECC needs to remember at least the label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> changes that happened after an existing PCEP session with a PCC goes</td><td> </td><td class="right"> changes that happened after an existing PCEP session with a PCC goes</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> down to have any chance of doing incremental synchronization when the</td><td> </td><td class="right"> down to have any chance of doing incremental synchronization when the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> session is re-established.</td><td> </td><td class="right"> session is re-established.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> If a PCECC finds out it does not have sufficient information to</td><td> </td><td class="right"> If a PCECC finds out it does not have sufficient information to</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> complete incremental synchronization after advertising incremental</td><td> </td><td class="right"> complete incremental synchronization after advertising incremental</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL-DB synchronization capability, it MUST send a PCErr with Error-</td><td> </td><td class="right"> LABEL-DB synchronization capability, it MUST send a PCErr with Error-</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Type TBD1 and Error-Value 5 'A PCECC indicates to a PCC that it can</td><td> </td><td class="right"> Type TBD1 and Error-Value 5 'A PCECC indicates to a PCC that it can</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> not complete the LABEL-DB synchronization' and terminate the session.</td><td> </td><td class="right"> not complete the LABEL-DB synchronization' and terminate the session.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The PCECC SHOULD re-establish the session with the D bit set to 0 in</td><td> </td><td class="right"> The PCECC SHOULD re-establish the session with the D bit set to 0 in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> the OPEN message.</td><td> </td><td class="right"> the OPEN message.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0039"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> The other procedures and error checks remain unchanged from the <span class="delete">full</span></td><td> </td><td class="rblock"> The other procedures and error checks remain unchanged from the</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> LABEL-DB synchronization defined in <span class="delete">Section 3.</span></td><td> </td><td class="rblock"> <span class="insert">default</span> LABEL-DB synchronization defined in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"> <span class="insert">[I-D.zhao-pce-pcep-extension-for-pce-controller]</span> and</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">5. PCEP Extensions</span></td><td> </td><td class="rblock"> <span class="insert">[I-D.zhao-pce-pcep-extension-for-sr-pce-controller].</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">5.1. Extension of SRP object</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> SRP object is defined in [I-D.ietf-pce-stateful-pce]</span> and <span class="delete">extended in</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> [I-D.ietf-pce-pce-initiated-lsp]. This draft defines a new 'SYNC'</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> flag (S bit) to specify the LABEL-DB synchronization operation.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> The format of the SRP object is shown Figure 8:</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0040"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">0 1 2 3</span></td><td> </td><td class="rblock"><span class="insert">4. PCEP Extensions</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | Flags |S|R|</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | SRP-ID-number |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> // Optional TLVs //</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> | |</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0041"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Figure 8: SRP Object forma</span>t</td><td> </td><td class="rblock"><span class="insert">4.1. Extension of SRP objec</span>t</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0042"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">S (SYNC - 1 bit): The S Flag MUST be set</span> to <span class="delete">1 on each PCLabelUpd sent</span></td><td> </td><td class="rblock"> <span class="insert">SRP object extension for SYNC flag</span> to <span class="insert">specify the</span> LABEL-DB</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> from a PCECC during</span> LABEL-DB <span class="delete">Synchronization. The S Flag MUST be set</span></td><td> </td><td class="rblock"> <span class="insert">synchronization operation is defined</span> in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> to 0</span> in <span class="delete">other messages sent from the PCECC.</span></td><td> </td><td class="rblock"> <span class="insert">[I-D.zhao-pce-pcep-extension-for-pce-controller].</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0043"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">5</span>.2. Extension of PCECC Capability TLV</td><td> </td><td class="rblock"><span class="insert">4</span>.2. Extension of PCECC Capability TLV</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> PCECC Capability TLV is defined in</td><td> </td><td class="right"> PCECC Capability TLV is defined in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.zhao-pce-pcep-extension-for-pce-controller]. This draft defines</td><td> </td><td class="right"> [I-D.zhao-pce-pcep-extension-for-pce-controller]. This draft defines</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> a new 'INCLUDE-LABEL-DB-VERSION' flag (I bit) to specify the label</td><td> </td><td class="right"> a new 'INCLUDE-LABEL-DB-VERSION' flag (I bit) to specify the label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> database version capability and 'DELTA-LABEL-SYNC-CAPABILITY' to</td><td> </td><td class="right"> database version capability and 'DELTA-LABEL-SYNC-CAPABILITY' to</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> specify the incremental label database synchronization capability.</td><td> </td><td class="right"> specify the incremental label database synchronization capability.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0044"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> The format of the PCECC Capability TLV is shown Figure <span class="delete">9:</span></td><td> </td><td class="rblock"> The <span class="insert">TLV format is as per [RFC5440]. The</span> format of the PCECC</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> Capability TLV is shown Figure <span class="insert">5:</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 0 1 2 3</td><td> </td><td class="right"> 0 1 2 3</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1</td><td> </td><td class="right"> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | Type | Length=4 |</td><td> </td><td class="right"> | Type | Length=4 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | Flags |D|I|S|</td><td> </td><td class="right"> | Flags |D|I|S|</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0045"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Figure <span class="delete">9</span>: PCECC Capability TLV</td><td> </td><td class="rblock"> Figure <span class="insert">5</span>: PCECC Capability TLV</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> I (INCLUDE-LABEL-DB-VERSION - 1 bit): if set to 1 by both PCEP</td><td> </td><td class="right"> I (INCLUDE-LABEL-DB-VERSION - 1 bit): if set to 1 by both PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Speakers, the PCECC will include the LABEL-DB-VERSION TLV in each</td><td> </td><td class="right"> Speakers, the PCECC will include the LABEL-DB-VERSION TLV in each</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> LABEL Object.</td><td> </td><td class="right"> LABEL Object.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> D (DELTA-LABEL-SYNC-CAPABILITY - 1 bit): if set to 1 by a PCEP</td><td> </td><td class="right"> D (DELTA-LABEL-SYNC-CAPABILITY - 1 bit): if set to 1 by a PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> speaker, it indicates that the PCEP speaker allows incremental</td><td> </td><td class="right"> speaker, it indicates that the PCEP speaker allows incremental</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> (delta) LABEL-DB synchronization.</td><td> </td><td class="right"> (delta) LABEL-DB synchronization.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0046"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">5</span>.3. New LABEL-DB-VERSION TLV</td><td> </td><td class="rblock"><span class="insert">4</span>.3. New LABEL-DB-VERSION TLV</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The Label Database Version Number (LABEL-DB-VERSION) TLV is an</td><td> </td><td class="right"> The Label Database Version Number (LABEL-DB-VERSION) TLV is an</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> optional TLV that MAY be included in the OPEN object and the LABEL</td><td> </td><td class="right"> optional TLV that MAY be included in the OPEN object and the LABEL</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> object.</td><td> </td><td class="right"> object.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0047"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> The format of the <span class="delete">LABEL-DB-VERSION</span> TLV is shown in the following</td><td> </td><td class="rblock"> The <span class="insert">TLV format is as per [RFC5440]. The</span> format of the <span class="insert">LABEL-DB-</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> figure:</td><td> </td><td class="rblock"><span class="insert"> VERSION</span> TLV is shown in the following figure:</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 0 1 2 3</td><td> </td><td class="right"> 0 1 2 3</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1</td><td> </td><td class="right"> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | Type=[TBD3] | Length=8 |</td><td> </td><td class="right"> | Type=[TBD3] | Length=8 |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | Label Database Version Number |</td><td> </td><td class="right"> | Label Database Version Number |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> | |</td><td> </td><td class="right"> | |</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td> </td><td class="right"> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0048"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">Figure 10</span>: LABEL-DB-VERSION TLV format</td><td> </td><td class="rblock"> <span class="insert"> Figure 6</span>: LABEL-DB-VERSION TLV format</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The type of the TLV is [TBD3] and it has a fixed length of 8 octets.</td><td> </td><td class="right"> The type of the TLV is [TBD3] and it has a fixed length of 8 octets.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> The value contains a 64-bit unsigned integer, representing the Label</td><td> </td><td class="right"> The value contains a 64-bit unsigned integer, representing the Label</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Database Version Number.</td><td> </td><td class="right"> Database Version Number.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0049"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">5. IANA Considerations</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">5.1. PCEP TLV Type Indicators</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> IANA is requested to confirm the early allocation of the following</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> TLV Type Indicator values within the "PCEP TLV Type Indicators" sub-</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> registry of the PCEP Numbers registry, and to update the reference in</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> the registry to point to this document, when it is an RFC:</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Value Meaning Reference</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [TBD] LABEL-DB-VERSION TLV This document</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">5.2. PCECC-CAPABILITY TLV</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-pce-controller] defines the PCECC-</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> CAPABILITY TLV and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller] extends this TLV</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> to add PCECC-SR-CAPABILITY.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Requests that IANA creates a registry to manage the value of the new</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> PCECC-CAPABILITY TLV's Flag field. IANA is requested to allocate a</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> new bits in the PCECC-CAPABILITY TLV Flag Field registry, as follows:</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Bit Description Reference</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 30 I (INCLUDE-LABEL-DB-VERSION ) This document</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 29 D (DELTA-LABEL-SYNC-CAPABILITY) This document</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> </td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">6. Manageability Considerations</td><td> </td><td class="right">6. Manageability Considerations</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0050"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">TBD</span></td><td> </td><td class="rblock"> <span class="insert">All manageability requirements and considerations listed in</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [RFC5440], [I-D.ietf-pce-stateful-pce] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-pce-controller] apply to PCEP</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> protocol extensions defined in this document. In addition,</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> requirements and considerations listed in this section apply.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0051"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">7. Security Considerations</span></td><td> </td><td class="rblock"><span class="insert">6.1. Control of Function and Policy</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0052"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> TBD</span></td><td> </td><td class="rblock"><span class="insert">6.2. Information and Data Models</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0053"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">8. IANA Considerations</span></td><td> </td><td class="rblock"><span class="insert">6.3. Liveness Detection and Monitoring</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0054"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> TBD</span></td><td> </td><td class="rblock"><span class="insert">6.4. Verify Correct Operations</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0055"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">9.</span> Acknowledgements</td><td> </td><td class="rblock"><span class="insert">6.5. Requirements On Other Protocols</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">6.6. Impact On Network Operations</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">7. Security Considerations</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> The security considerations listed in [I-D.ietf-pce-stateful-pce] and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-pce-controller] apply to this</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> document as well. Securing the PCEP session using Transport Layer</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Security (TLS) [I-D.ietf-pce-pceps], as per the recommendations and</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> best current practices in [RFC7525], is RECOMMENDED.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">8.</span> Acknowledgements</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> This document borrows some of the structure and text from</td><td> </td><td class="right"> This document borrows some of the structure and text from</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.ietf-pce-stateful-sync-optimizations], and would like to thanks</td><td> </td><td class="right"> [I-D.ietf-pce-stateful-sync-optimizations], and would like to thanks</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> the authors and contributors of the document.</td><td> </td><td class="right"> the authors and contributors of the document.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0056"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">10</span>. References</td><td> </td><td class="rblock"><span class="insert">9</span>. References</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0057"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">10</span>.1. Normative References</td><td> </td><td class="rblock"><span class="insert">9</span>.1. Normative References</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate</td><td> </td><td class="right"> [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Requirement Levels", BCP 14, RFC 2119,</td><td> </td><td class="right"> Requirement Levels", BCP 14, RFC 2119,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> DOI 10.17487/RFC2119, March 1997,</td><td> </td><td class="right"> DOI 10.17487/RFC2119, March 1997,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> <http://www.rfc-editor.org/info/rfc2119>.</td><td> </td><td class="right"> <http://www.rfc-editor.org/info/rfc2119>.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [RFC5440] Vasseur, JP., Ed. and JL. Le Roux, Ed., "Path Computation</td><td> </td><td class="right"> [RFC5440] Vasseur, JP., Ed. and JL. Le Roux, Ed., "Path Computation</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Element (PCE) Communication Protocol (PCEP)", RFC 5440,</td><td> </td><td class="right"> Element (PCE) Communication Protocol (PCEP)", RFC 5440,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> DOI 10.17487/RFC5440, March 2009,</td><td> </td><td class="right"> DOI 10.17487/RFC5440, March 2009,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> <http://www.rfc-editor.org/info/rfc5440>.</td><td> </td><td class="right"> <http://www.rfc-editor.org/info/rfc5440>.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.ietf-pce-stateful-pce]</td><td> </td><td class="right"> [I-D.ietf-pce-stateful-pce]</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Crabbe, E., Minei, I., Medved, J., and R. Varga, "PCEP</td><td> </td><td class="right"> Crabbe, E., Minei, I., Medved, J., and R. Varga, "PCEP</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Extensions for Stateful PCE", draft-ietf-pce-stateful-</td><td> </td><td class="right"> Extensions for Stateful PCE", draft-ietf-pce-stateful-</td><td class="lineno"></td></tr>
<tr id="diff0058"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> pce-<span class="delete">14 (work in progress), March 2016</span>.</td><td> </td><td class="rblock"> pce-<span class="insert">21 (work in progress), June 2017</span>.</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.zhao-pce-pcep-extension-for-pce-controller]</td><td> </td><td class="right"> [I-D.zhao-pce-pcep-extension-for-pce-controller]</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Zhao, Q., Li, Z., Dhody, D., and C. Zhou, "PCEP Procedures</td><td> </td><td class="right"> Zhao, Q., Li, Z., Dhody, D., and C. Zhou, "PCEP Procedures</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> and Protocol Extensions for Using PCE as a Central</td><td> </td><td class="right"> and Protocol Extensions for Using PCE as a Central</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Controller (PCECC) of LSPs", draft-zhao-pce-pcep-</td><td> </td><td class="right"> Controller (PCECC) of LSPs", draft-zhao-pce-pcep-</td><td class="lineno"></td></tr>
<tr id="diff0059"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">extension-for-pce-controller-03</span> (work in progress), <span class="delete">March</span></td><td> </td><td class="rblock"> <span class="insert">extension-for-pce-controller-04</span> (work in progress),</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> 2016.</span></td><td> </td><td class="rblock"> <span class="insert">January 2017.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0060"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete">10</span>.2. Informative References</td><td> </td><td class="rblock"><span class="insert">9</span>.2. Informative References</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0061"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">[I-D.zhao-teas-pce-control-function]</span></td><td> </td><td class="rblock"> <span class="insert">[RFC7525] Sheffer, Y., Holz, R., and P. Saint-Andre,</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> "Recommendations for Secure Use of Transport Layer</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Security (TLS) and Datagram Transport Layer Security</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> (DTLS)", BCP 195, RFC 7525, DOI 10.17487/RFC7525, May</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> 2015, <http://www.rfc-editor.org/info/rfc7525>.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.ietf-pce-pceps]</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Lopez, D., Dios, O., Wu, Q., and D. Dhody, "Secure</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Transport for PCEP", draft-ietf-pce-pceps-14 (work in</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> progress), May 2017.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.ietf-teas-pce-central-control]</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Farrel, A., Zhao, Q., Li, Z., and C. Zhou, "An</td><td> </td><td class="right"> Farrel, A., Zhao, Q., Li, Z., and C. Zhou, "An</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Architecture for Use of PCE and PCEP in a Network with</td><td> </td><td class="right"> Architecture for Use of PCE and PCEP in a Network with</td><td class="lineno"></td></tr>
<tr id="diff0062"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> Central Control", <span class="delete">draft-zhao-teas-pce-control-function-00</span></td><td> </td><td class="rblock"> Central Control", <span class="insert">draft-ietf-teas-pce-central-control-03</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> (work in progress), <span class="delete">May 2016.</span></td><td> </td><td class="rblock"> (work in progress), <span class="insert">June 2017.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> [I-D.ietf-pce-pce-initiated-lsp]</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Crabbe, E., Minei, I., Sivabalan, S., and R. Varga, "PCEP</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Extensions for PCE-initiated LSP Setup in a Stateful PCE</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> Model", draft-ietf-pce-pce-initiated-lsp-05 (work in</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"><span class="delete"> progress), October 2015.</span></td><td> </td><td class="rblock"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> [I-D.ietf-pce-stateful-sync-optimizations]</td><td> </td><td class="right"> [I-D.ietf-pce-stateful-sync-optimizations]</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Crabbe, E., Minei, I., Medved, J., Varga, R., Zhang, X.,</td><td> </td><td class="right"> Crabbe, E., Minei, I., Medved, J., Varga, R., Zhang, X.,</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> and D. Dhody, "Optimizations of Label Switched Path State</td><td> </td><td class="right"> and D. Dhody, "Optimizations of Label Switched Path State</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Synchronization Procedures for a Stateful PCE", draft-</td><td> </td><td class="right"> Synchronization Procedures for a Stateful PCE", draft-</td><td class="lineno"></td></tr>
<tr id="diff0063"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> <span class="delete">ietf-pce-stateful-sync-optimizations-05</span> (work in</td><td> </td><td class="rblock"> <span class="insert">ietf-pce-stateful-sync-optimizations-10</span> (work in</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"> progress), <span class="delete">April 2016.</span></td><td> </td><td class="rblock"> progress), <span class="insert">March 2017.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> [I-D.zhao-pce-pcep-extension-for-sr-pce-controller]</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Zhao, Q., Li, Z., Dhody, D., Karunanithi, S., Farrel, A.,</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> and C. Zhou, "PCEP Procedures and Protocol Extensions for</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Using PCE as a Central Controller (PCECC) of LSPs", draft-</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> zhao-pce-pcep-extension-for-sr-pce-controller-00 (work in</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> progress), June 2017.</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left">Authors' Addresses</td><td> </td><td class="right">Authors' Addresses</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Udayasree Palle</td><td> </td><td class="right"> Udayasree Palle</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Huawei Technologies</td><td> </td><td class="right"> Huawei Technologies</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Divyashree Techno Park, Whitefield</td><td> </td><td class="right"> Divyashree Techno Park, Whitefield</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Bangalore, Karnataka 560066</td><td> </td><td class="right"> Bangalore, Karnataka 560066</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> India</td><td> </td><td class="right"> India</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr id="diff0064"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"> EMail: udayasree<span class="delete">.palle@huawei</span>.com</td><td> </td><td class="rblock"> EMail: udayasree<span class="insert">reddy@gmail</span>.com</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Dhruv Dhody</td><td> </td><td class="right"> Dhruv Dhody</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Huawei Technologies</td><td> </td><td class="right"> Huawei Technologies</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Divyashree Techno Park, Whitefield</td><td> </td><td class="right"> Divyashree Techno Park, Whitefield</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> Bangalore, Karnataka 560066</td><td> </td><td class="right"> Bangalore, Karnataka 560066</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> India</td><td> </td><td class="right"> India</td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="left"> EMail: dhruv.ietf@gmail.com</td><td> </td><td class="right"> EMail: dhruv.ietf@gmail.com</td><td class="lineno"></td></tr>
<tr id="diff0065"><td></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> </td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"> <span class="insert">Satish Karunanithi</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Huawei Technologies</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Divyashree Techno Park, Whitefield</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> Bangalore, Karnataka 560066</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> India</span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno"></td></tr>
<tr><td class="lineno"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"> EMail: satishk@huawei.com</span></td><td class="lineno"></td></tr>
<tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
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