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show_neigh.py
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show_neigh.py
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#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#ip -j -f inet neigh list | jq
#[
#{
#"dst": "192.168.101.8",
#"dev": "enp0s25",
#"lladdr": "78:d2:94:72:77:7e",
#"state": [
#"STALE"
#]
#},
#{
#"dst": "192.168.101.185",
#"dev": "enp0s25",
#"lladdr": "34:46:ec:76:f8:9b",
#"state": [
#"STALE"
#]
#},
#{
#"dst": "192.168.101.225",
#"dev": "enp0s25",
#"lladdr": "c2:cb:fa:bf:a0:35",
#"state": [
#"STALE"
#]
#},
#{
#"dst": "192.168.101.1",
#"dev": "enp0s25",
#"lladdr": "00:98:2b:f8:3f:11",
#"state": [
#"REACHABLE"
#]
#},
#{
#"dst": "192.168.101.181",
#"dev": "enp0s25",
#"lladdr": "d8:9b:3b:d5:88:22",
#"state": [
#"STALE"
#]
#}
#]
import sys
import argparse
import json
from vyos.util import cmd
def main():
#parese args
parser = argparse.ArgumentParser()
parser.add_argument('--family', help='Protocol family', required=True)
args = parser.parse_args()
neigh_raw_json = cmd(f'ip -j -f {args.family} neigh list')
neigh_raw_json = neigh_raw_json.lower()
neigh_json = json.loads(neigh_raw_json)
format_neigh = '%-50s %-10s %-20s %s'
print(format_neigh % ("IP Address", "Device", "State", "LLADDR"))
print(format_neigh % ("----------", "------", "-----", "------"))
if neigh_json is not None:
for neigh_item in neigh_json:
dev = neigh_item['dev']
dst = neigh_item['dst']
lladdr = neigh_item['lladdr'] if 'lladdr' in neigh_item else ''
state = neigh_item['state']
i = 0
for state_item in state:
if i == 0:
print(format_neigh % (dst, dev, state_item, lladdr))
else:
print(format_neigh % ('', '', state_item, ''))
i+=1
if __name__ == '__main__':
main()

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