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ubuntu-host

Ubuntu host node for emulated network topologies

Overview

netreplica/ubuntu-host Docker image provides the following capabilities:

  • LLDP daemon
  • SSH daemon
  • ncat chat service

In addition, it includes a variety of networking utilities like tcpdump, curl. See Dockerfile for a complete list.

Building the image

Using local tag for custom builds

docker image build -t ubuntu-host:local .

Using the image

Image CMD arguments

Typical deployment with SSHD and LLDP in station mode

CMD ["/start.sh","-Ss"]

Usage:

Usage: start.sh [-s|r] [-l|C] [-S] [-h]
   -s         station mode: disable ip_forwarding
   -r         router  mode: enable  ip_forwarding
   -l <port>  listen on the port with ncat
   -C <port>  start ncat chat sevice on the port
   -S         launch SSH daemon
   -h         show usage

Adding ubuntu-host to Containerlab

This snippet would launch host node in Containerlab with SSH server enabled via -S and root password set to root

topology:
  nodes:
    host1:
      kind: linux
      image: ubuntu-host:local
      cmd: /start.sh -S
      exec:
        - bash -c "echo root:root | chpasswd"

Copyright notice

Copyright 2022 Netreplica Team

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.