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tests: Check if BFD notification is sent and session remains in down state
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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@ -1,5 +1,9 @@
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bfd
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bfd
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profile r1
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exit
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!
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peer 192.168.255.2 interface r1-eth0
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peer 192.168.255.2 interface r1-eth0
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profile r1
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exit
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exit
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!
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!
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exit
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exit
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@ -3,7 +3,7 @@ router bgp 65001
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neighbor 192.168.255.2 remote-as external
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neighbor 192.168.255.2 remote-as external
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neighbor 192.168.255.2 timers 3 10
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neighbor 192.168.255.2 timers 3 10
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neighbor 192.168.255.2 timers connect 1
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neighbor 192.168.255.2 timers connect 1
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neighbor 192.168.255.2 bfd
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neighbor 192.168.255.2 bfd profile r1
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neighbor 192.168.255.2 passive
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neighbor 192.168.255.2 passive
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address-family ipv4
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address-family ipv4
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redistribute connected
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redistribute connected
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@ -89,6 +89,9 @@ def test_bgp_bfd_down_notification():
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"192.168.255.1": {
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"192.168.255.1": {
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"lastNotificationReason": "Cease/BFD Down",
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"lastNotificationReason": "Cease/BFD Down",
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"lastNotificationHardReset": True,
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"lastNotificationHardReset": True,
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"peerBfdInfo": {
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"status": "Up",
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},
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}
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}
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}
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}
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return topotest.json_cmp(output, expected)
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return topotest.json_cmp(output, expected)
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@ -0,0 +1,122 @@
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#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# bgp_bfd_down_cease_notification_shutdown.py
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#
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# Copyright (c) 2024 by
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# Donatas Abraitis <donatas@opensourcerouting.org>
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#
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"""
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Check if Cease/BFD Down notification message is sent/received
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when the BFD is down (administratively).
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"""
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import os
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import sys
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import json
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import pytest
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import functools
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.common_config import kill_router_daemons, step
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pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
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def build_topo(tgen):
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for routern in range(1, 3):
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tgen.add_router("r{}".format(routern))
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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def setup_module(mod):
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for i, (rname, router) in enumerate(router_list.items(), 1):
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_BFD, os.path.join(CWD, "{}/bfdd.conf".format(rname))
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)
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tgen.start_router()
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def teardown_module(mod):
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tgen = get_topogen()
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tgen.stop_topology()
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def test_bgp_bfd_down_notification_shutdown():
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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r1 = tgen.gears["r1"]
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r2 = tgen.gears["r2"]
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def _bgp_converge():
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output = json.loads(r2.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json"))
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expected = {
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"192.168.255.1": {
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"bgpState": "Established",
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"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
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"peerBfdInfo": {"status": "Up"},
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}
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}
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return topotest.json_cmp(output, expected)
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def _bgp_bfd_down_notification():
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output = json.loads(r2.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json"))
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expected = {
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"192.168.255.1": {
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"lastNotificationReason": "Cease/BFD Down",
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"lastNotificationHardReset": True,
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"peerBfdInfo": {
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"status": "Down",
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},
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}
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}
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return topotest.json_cmp(output, expected)
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step("Initial BGP converge")
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test_func = functools.partial(_bgp_converge)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assert result is None, "Failed to see BGP convergence on R2"
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r1.vtysh_cmd(
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"""
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configure
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bfd
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profile r1
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shutdown
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"""
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)
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step("Check if we received Cease/BFD Down notification message")
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test_func = functools.partial(_bgp_bfd_down_notification)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assert result is None, "Failed to see BGP Cease/BFD Down notification message on R2"
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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