pingrange.py

#!/usr/bin/env python
#
# Copyright (C) 2014 Cisco Systems Inc.
#
# 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.
#
#
# This script will accept as a parameter an IP or range of IP address
# and attempt to ping them all from the switch it is running on
# Ranges can be specified in any octet, e.g.,
# python pingrange.py 10.1.0-1.0-255 will ping 10.1.0.0/23
#
#
import re
try:
        from cli import cli
except ImportError:
        from cisco import cli
from argparse import ArgumentParser

def expandrange(rangefunc):
    hosts = []
    octets = rangefunc.split('.')
    for i,octet in enumerate(octets):
        if '-' in octet:
            octetrange = octet.split('-')
            for digit in range(int(octetrange[0]), int(octetrange[1])+1):
                ip = '.'.join(octets[:i] + [str(digit)] + octets[i+1:])
                hosts += expandrange(ip)
            break
    else:
        hosts.append(rangefunc)
    return hosts

parser = ArgumentParser('pingrange')
parser.add_argument('ip', help='IP range to ping, e.g., 10.1.0-1.0-255 will expand to 10.1.0.0/23')
parser.add_argument('options', nargs='*', help='Options to pass to ping', default=['count 1'])
args = parser.parse_args()
targets = expandrange(args.ip)

for ip in targets:
    m = re.search('([0-9\.]+)% packet loss', cli('ping %s %s' % (ip, ' '.join(args.options))))
    print('%s - %s' % (ip, 'UP' if float(m.group(1)) == 0.0 else 'DOWN'))