diff options
Diffstat (limited to 'tests/topotests/bgp_dampening_per_peer')
4 files changed, 209 insertions, 0 deletions
diff --git a/tests/topotests/bgp_dampening_per_peer/__init__.py b/tests/topotests/bgp_dampening_per_peer/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tests/topotests/bgp_dampening_per_peer/__init__.py diff --git a/tests/topotests/bgp_dampening_per_peer/r1/frr.conf b/tests/topotests/bgp_dampening_per_peer/r1/frr.conf new file mode 100644 index 0000000..4589955 --- /dev/null +++ b/tests/topotests/bgp_dampening_per_peer/r1/frr.conf @@ -0,0 +1,15 @@ +! +int r1-eth0 + ip address 192.168.1.1/24 +! +router bgp 65001 + no bgp ebgp-requires-policy + neighbor 192.168.1.2 remote-as external + neighbor 192.168.1.2 timers 1 3 + neighbor 192.168.1.2 timers connect 1 + neighbor 192.168.1.2 capability dynamic + ! + address-family ipv4 unicast + neighbor 192.168.1.2 dampening 1 1 1 1 + exit-address-family +! diff --git a/tests/topotests/bgp_dampening_per_peer/r2/frr.conf b/tests/topotests/bgp_dampening_per_peer/r2/frr.conf new file mode 100644 index 0000000..d68d13d --- /dev/null +++ b/tests/topotests/bgp_dampening_per_peer/r2/frr.conf @@ -0,0 +1,17 @@ +! +int lo + ip address 10.10.10.10/32 +! +int r2-eth0 + ip address 192.168.1.2/24 +! +router bgp 65002 + no bgp ebgp-requires-policy + neighbor 192.168.1.1 remote-as external + neighbor 192.168.1.1 timers 1 3 + neighbor 192.168.1.1 timers connect 1 + ! + address-family ipv4 unicast + redistribute connected + exit-address-family +! diff --git a/tests/topotests/bgp_dampening_per_peer/test_bgp_dampening_per_peer.py b/tests/topotests/bgp_dampening_per_peer/test_bgp_dampening_per_peer.py new file mode 100644 index 0000000..2066d84 --- /dev/null +++ b/tests/topotests/bgp_dampening_per_peer/test_bgp_dampening_per_peer.py @@ -0,0 +1,177 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# Copyright (c) 2024 by +# Donatas Abraitis <donatas@opensourcerouting.org> +# + +import os +import re +import sys +import json +import pytest +import functools + +pytestmark = [pytest.mark.bgpd] + +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) + +# pylint: disable=C0413 +from lib import topotest +from lib.topogen import Topogen, get_topogen + + +def setup_module(mod): + topodef = {"s1": ("r1", "r2")} + tgen = Topogen(topodef, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + + for _, (rname, router) in enumerate(router_list.items(), 1): + router.load_frr_config(os.path.join(CWD, "{}/frr.conf".format(rname))) + + tgen.start_router() + + +def teardown_module(mod): + tgen = get_topogen() + tgen.stop_topology() + + +def test_bgp_dampening_per_peer(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + + def _converge(): + output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.10/32 json")) + expected = { + "paths": [ + { + "valid": True, + "nexthops": [ + { + "hostname": "r2", + "accessible": True, + } + ], + } + ] + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _converge, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "Can't converge" + + #### + # Withdraw 10.10.10.10/32, and check if it's flagged as history. + #### + r2.vtysh_cmd( + """ + configure terminal + router bgp + address-family ipv4 unicast + no redistribute connected + """ + ) + + def _check_bgp_dampening_history(): + output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.10/32 json")) + expected = { + "paths": [ + { + "dampeningHistoryEntry": True, + "nexthops": [ + { + "hostname": "r2", + "accessible": True, + } + ], + } + ], + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _check_bgp_dampening_history, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "10.10.10.10/32 is not flagged as history entry" + + #### + # Reannounce 10.10.10.10/32, and check if it's flagged as dampened. + #### + r2.vtysh_cmd( + """ + configure terminal + router bgp + address-family ipv4 unicast + redistribute connected + """ + ) + + def _check_bgp_dampening_dampened(): + output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.10/32 json")) + expected = { + "paths": [ + { + "valid": True, + "dampeningSuppressed": True, + "nexthops": [ + { + "hostname": "r2", + "accessible": True, + } + ], + } + ], + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _check_bgp_dampening_dampened, + ) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=1) + assert result is None, "10.10.10.10/32 is not flagged as dampened entry" + + #### + # Check if the route becomes non-dampened again after some time. + #### + def _check_bgp_dampening_undampened(): + output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.10/32 json")) + expected = { + "paths": [ + { + "valid": True, + "dampeningHistoryEntry": None, + "dampeningSuppressed": None, + "nexthops": [ + { + "hostname": "r2", + "accessible": True, + } + ], + } + ], + } + return topotest.json_cmp(output, expected) + + test_func = functools.partial( + _check_bgp_dampening_undampened, + ) + _, result = topotest.run_and_expect(test_func, None, count=120, wait=10) + assert result is None, "10.10.10.10/32 is flagged as history/dampened" + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |