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lldp_op.py
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lldp_op.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 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/>.
import argparse
import jinja2
import json
from sys import exit
from tabulate import tabulate
from vyos.util import cmd
from vyos.config import Config
parser = argparse.ArgumentParser()
parser.add_argument("-a", "--all", action="store_true", help="Show LLDP neighbors on all interfaces")
parser.add_argument("-d", "--detail", action="store_true", help="Show detailes LLDP neighbor information on all interfaces")
parser.add_argument("-i", "--interface", action="store", help="Show LLDP neighbors on specific interface")
# Please be careful if you edit the template.
lldp_out = """Capability Codes: R - Router, B - Bridge, W - Wlan r - Repeater, S - Station
D - Docsis, T - Telephone, O - Other
Device ID Local Proto Cap Platform Port ID
--------- ----- ----- --- -------- -------
{% for neighbor in neighbors %}
{% for local_if, info in neighbor.items() %}
{{ "%-25s" | format(info.chassis) }} {{ "%-9s" | format(local_if) }} {{ "%-6s" | format(info.proto) }} {{ "%-5s" | format(info.capabilities) }} {{ "%-20s" | format(info.platform[:18]) }} {{ info.remote_if }}
{% endfor %}
{% endfor %}
"""
def get_neighbors():
return cmd('/usr/sbin/lldpcli -f json show neighbors')
def parse_data(data, interface):
output = []
if not isinstance(data, list):
data = [data]
for neighbor in data:
for local_if, values in neighbor.items():
if interface is not None and local_if != interface:
continue
for chassis, c_value in values.get('chassis', {}).items():
capabilities = c_value['capability']
if isinstance(capabilities, dict):
capabilities = [capabilities]
cap = ''
for capability in capabilities:
if capability['enabled']:
if capability['type'] == 'Router':
cap += 'R'
if capability['type'] == 'Bridge':
cap += 'B'
if capability['type'] == 'Wlan':
cap += 'W'
if capability['type'] == 'Station':
cap += 'S'
if capability['type'] == 'Repeater':
cap += 'r'
if capability['type'] == 'Telephone':
cap += 'T'
if capability['type'] == 'Docsis':
cap += 'D'
if capability['type'] == 'Other':
cap += 'O'
remote_if = 'Unknown'
if 'descr' in values.get('port', {}):
remote_if = values.get('port', {}).get('descr')
elif 'id' in values.get('port', {}):
remote_if = values.get('port', {}).get('id').get('value', 'Unknown')
output.append({local_if: {'chassis': chassis,
'remote_if': remote_if,
'proto': values.get('via','Unknown'),
'platform': c_value.get('descr', 'Unknown'),
'capabilities': cap}})
output = {'neighbors': output}
return output
if __name__ == '__main__':
args = parser.parse_args()
tmp = { 'neighbors' : [] }
c = Config()
if not c.exists_effective(['service', 'lldp']):
print('Service LLDP is not configured')
exit(0)
if args.detail:
print(cmd('/usr/sbin/lldpctl -f plain'))
exit(0)
elif args.all or args.interface:
tmp = json.loads(get_neighbors())
neighbors = dict()
if 'interface' in tmp.get('lldp'):
neighbors = tmp['lldp']['interface']
else:
parser.print_help()
exit(1)
tmpl = jinja2.Template(lldp_out, trim_blocks=True)
config_text = tmpl.render(parse_data(neighbors, interface=args.interface))
print(config_text)
exit(0)

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