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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
# Copyright (c) 2023 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
"""
Test if local-preference is passed between different EBGP peers when
EBGP-OAD is configured.
Also check if no-export community is passed to the EBGP-OAD peer.
"""
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
pytestmark = [pytest.mark.bgpd]
def setup_module(mod):
topodef = {"s1": ("r1", "r2", "r4"), "s2": ("r2", "r3"), "s3": ("r4", "r5")}
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_dynamic_capability_role():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
r2 = tgen.gears["r2"]
r3 = tgen.gears["r3"]
r4 = tgen.gears["r4"]
r5 = tgen.gears["r5"]
def _bgp_converge():
output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast 10.10.10.10/32 json"))
expected = {
"paths": [
{
"aspath": {"string": "65002 65003"},
"metric": 123,
"locPrf": 123,
"peer": {
"hostname": "r2",
"type": "external (oad)",
},
},
{
"aspath": {"string": "65004 65005"},
"metric": 123,
"locPrf": 123,
"bestpath": {"selectionReason": "Peer Type"},
"peer": {
"hostname": "r4",
"type": "external",
},
},
]
}
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"
def _bgp_check_no_export(router, arg=[{"valid": True}]):
output = json.loads(router.vtysh_cmd("show bgp ipv4 unicast json"))
expected = {
"routes": {
"10.10.10.1/32": arg,
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_bgp_check_no_export,
r2,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "10.10.10.1/32 should be advertised to r2"
test_func = functools.partial(
_bgp_check_no_export,
r3,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "10.10.10.1/32 should be advertised to r3"
test_func = functools.partial(
_bgp_check_no_export,
r4,
None,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert result is None, "10.10.10.1/32 should not be advertised to r4 (not OAD peer)"
def _bgp_check_non_transitive_extended_community(
router, arg={"string": "LB:65003:12500000 (100.000 Mbps)"}
):
output = json.loads(
router.vtysh_cmd("show bgp ipv4 unicast 10.10.10.20/32 json")
)
expected = {
"paths": [
{
"extendedCommunity": arg,
}
]
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(
_bgp_check_non_transitive_extended_community,
r4,
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert (
result is None
), "10.10.10.20/32 should be received at r4 with non-transitive extended community"
test_func = functools.partial(
_bgp_check_non_transitive_extended_community, r5, None
)
_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
assert (
result is None
), "10.10.10.20/32 should NOT be received at r5 with non-transitive extended community"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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