projects / mirror_frr.git / blame
| Commit | Line | Data |
|---|---|---|
| aebe2e37 | 1 | #!/usr/bin/env python |
| acddc0ed | 2 | # SPDX-License-Identifier: ISC |
| aebe2e37 DA |
3 | |
| 4 | # | |
| 5 | # bgp_bfd_down_cease_notification.py | |
| 6 | # | |
| 7 | # Copyright (c) 2022 by | |
| 8 | # Donatas Abraitis <donatas@opensourcerouting.org> | |
| 9 | # | |
| aebe2e37 DA |
10 | |
| 11 | """ | |
| 12 | Check if Cease/BFD Down notification message is sent/received | |
| 13 | when the BFD is down. | |
| 14 | """ | |
| 15 | ||
| 16 | import os | |
| 17 | import sys | |
| 18 | import json | |
| 19 | import pytest | |
| 20 | import functools | |
| 21 | ||
| 22 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
| 23 | sys.path.append(os.path.join(CWD, "../")) | |
| 24 | ||
| 25 | # pylint: disable=C0413 | |
| 26 | from lib import topotest | |
| 27 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
| 28 | from lib.common_config import kill_router_daemons, step | |
| 29 | ||
| 30 | pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd] | |
| 31 | ||
| 32 | ||
| 33 | def build_topo(tgen): | |
| 34 | for routern in range(1, 3): | |
| 35 | tgen.add_router("r{}".format(routern)) | |
| 36 | ||
| 37 | switch = tgen.add_switch("s1") | |
| 38 | switch.add_link(tgen.gears["r1"]) | |
| 39 | switch.add_link(tgen.gears["r2"]) | |
| 40 | ||
| 41 | ||
| 42 | def setup_module(mod): | |
| 43 | tgen = Topogen(build_topo, mod.__name__) | |
| 44 | tgen.start_topology() | |
| 45 | ||
| 46 | router_list = tgen.routers() | |
| 47 | ||
| 48 | for i, (rname, router) in enumerate(router_list.items(), 1): | |
| 49 | router.load_config( | |
| 50 | TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)) | |
| 51 | ) | |
| 52 | router.load_config( | |
| 53 | TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname)) | |
| 54 | ) | |
| 55 | router.load_config( | |
| 56 | TopoRouter.RD_BFD, os.path.join(CWD, "{}/bfdd.conf".format(rname)) | |
| 57 | ) | |
| 58 | ||
| 59 | tgen.start_router() | |
| 60 | ||
| 61 | ||
| 62 | def teardown_module(mod): | |
| 63 | tgen = get_topogen() | |
| 64 | tgen.stop_topology() | |
| 65 | ||
| 66 | ||
| 67 | def test_bgp_bfd_down_notification(): | |
| 68 | tgen = get_topogen() | |
| 69 | ||
| 70 | if tgen.routers_have_failure(): | |
| 71 | pytest.skip(tgen.errors) | |
| 72 | ||
| 73 | r2 = tgen.gears["r2"] | |
| 74 | ||
| 75 | def _bgp_converge(): | |
| 76 | output = json.loads(r2.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")) | |
| 77 | expected = { | |
| 78 | "192.168.255.1": { | |
| 79 | "bgpState": "Established", | |
| 80 | "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}}, | |
| 81 | "peerBfdInfo": {"status": "Up"}, | |
| 82 | } | |
| 83 | } | |
| 84 | return topotest.json_cmp(output, expected) | |
| 85 | ||
| 86 | def _bgp_bfd_down_notification(): | |
| 87 | output = json.loads(r2.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")) | |
| 88 | expected = { | |
| 89 | "192.168.255.1": { | |
| 90 | "lastNotificationReason": "Cease/BFD Down", | |
| 91 | } | |
| 92 | } | |
| 93 | return topotest.json_cmp(output, expected) | |
| 94 | ||
| 95 | step("Initial BGP converge") | |
| 96 | test_func = functools.partial(_bgp_converge) | |
| 97 | _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5) | |
| 98 | assert result is None, "Failed to see BGP convergence on R2" | |
| 99 | ||
| 100 | step("Kill bfdd on R2") | |
| 101 | kill_router_daemons(tgen, "r2", ["bfdd"]) | |
| 102 | ||
| 103 | step("Check if we received Cease/BFD Down notification message") | |
| 104 | test_func = functools.partial(_bgp_bfd_down_notification) | |
| 105 | _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5) | |
| 106 | assert result is None, "Failed to see BGP Cease/BFD Down notification message on R2" | |
| 107 | ||
| 108 | ||
| 109 | if __name__ == "__main__": | |
| 110 | args = ["-s"] + sys.argv[1:] | |
| 111 | sys.exit(pytest.main(args)) |