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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
# Copyright (c) 2023 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
"""
Test if static route with BGP conditional advertisement works correctly
if we modify the prefix-lists.
"""
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, TopoRouter, get_topogen
from lib.common_config import step
def setup_module(mod):
topodef = {"s1": ("r1", "r2"), "s2": ("r2", "r3")}
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_conditional_advertisements_static_route():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
r2 = tgen.gears["r2"]
def _bgp_converge():
output = json.loads(
r2.vtysh_cmd(
"show bgp ipv4 unicast neighbor 192.168.1.1 advertised-routes json"
)
)
expected = {
"advertisedRoutes": {
"10.10.10.1/32": {
"valid": True,
}
},
"totalPrefixCounter": 1,
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_bgp_converge,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "Can't converge"
step("Append prefix-list to advertise 10.10.10.2/32")
r2.vtysh_cmd(
"""
configure terminal
ip prefix-list advertise seq 10 permit 10.10.10.2/32
"""
)
def _bgp_check_advertised_after_update():
output = json.loads(
r2.vtysh_cmd(
"show bgp ipv4 unicast neighbor 192.168.1.1 advertised-routes json"
)
)
expected = {
"advertisedRoutes": {
"10.10.10.1/32": {
"valid": True,
},
"10.10.10.2/32": {
"valid": True,
},
},
"totalPrefixCounter": 2,
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_bgp_check_advertised_after_update,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "10.10.10.2/32 is not advertised after prefix-list update"
def _bgp_check_received_routes():
output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.1/32 json"))
expected = {
"paths": [
{
"community": {
"string": "65000:1",
}
}
]
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_bgp_check_received_routes,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "10.10.10.1/32 does not have 65000:1 community attached"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
|
