matthieu/frr
1
0
Fork 0
forked from Mirror/frr
Code Pull requests Activity

Merge pull request #18325 from chdxD1/topotests/evpn-multipath-flap

Browse source 
topotests: Add EVPN RT5 multipath flap test
This commit is contained in:
Jafar Al-Gharaibeh 2025-03-19 23:14:38 -05:00 committed by GitHub
parent 5646cf0c13 b6fc0a1c5b
commit 361f80a64b
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 97 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

97
tests/topotests/bgp_evpn_rt5/test_bgp_evpn.py
View file

@ -465,6 +465,103 @@ def test_evpn_ping_again():
_test_evpn_ping_router(tgen.gears["r1"], ipv4_only=True)
def _test_wait_for_multipath_convergence(router):
"""
Wait for multipath convergence on R2
"""
expected = {
"192.168.102.21/32": [
{"nexthops": [{"ip": "192.168.100.21"}, {"ip": "192.168.100.21"}]}
]
}
# Using router_json_cmp instead of verify_fib_routes, because we need to check for
# two next-hops with the same IP address.
test_func = partial(
topotest.router_json_cmp,
router,
"show ip route vrf r2-vrf-101 192.168.102.21/32 json",
expected,
)
_, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assert (
result is None
), "R2 does not have two next-hops for 192.168.102.21/32 JSON output mismatches"
def _test_rmac_present(router):
"""
Check that the RMAC is present on R2
"""
output = router.vtysh_cmd("show evpn rmac vni 101", isjson=False)
logger.info("==== result from show evpn rmac vni 101")
logger.info(output)
expected = {"numRmacs": 1}
test_func = partial(
topotest.router_json_cmp,
router,
"show evpn rmac vni 101 json",
expected,
)
_, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assert result is None, "evpn rmac is missing on router"
def test_evpn_multipath():
"""
Configure a second path between R1 and R2, then flap it a couple times.
As long as the route is present, the RMAC should be present at the same time.
"""
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
evpn_multipath = {
"r1": {
"raw_config": [
"interface r1-eth0",
"ip address 192.168.99.21/24",
"router bgp 65000",
"neighbor 192.168.99.41 remote-as 65000",
"neighbor 192.168.99.41 capability extended-nexthop",
"neighbor 192.168.99.41 update-source 192.168.99.21",
"address-family l2vpn evpn",
"neighbor 192.168.99.41 activate",
"neighbor 192.168.99.41 route-map rmap_r1 in",
]
},
"r2": {
"raw_config": [
"interface r2-eth0",
"ip address 192.168.99.41/24",
"router bgp 65000",
"neighbor 192.168.99.21 remote-as 65000",
"neighbor 192.168.99.21 capability extended-nexthop",
"neighbor 192.168.99.21 update-source 192.168.99.41",
"address-family l2vpn evpn",
"neighbor 192.168.99.21 activate",
]
},
}
logger.info("==== Configure second path between R1 and R2")
result = apply_raw_config(tgen, evpn_multipath)
assert (
result is True
), "Failed to configure second path between R1 and R2, Error: {} ".format(result)
dut = tgen.gears["r2"]
dut_peer = tgen.gears["r1"]
_test_wait_for_multipath_convergence(dut)
_test_rmac_present(dut)
for i in range(4):
peer = "192.168.100.41" if i % 2 == 0 else "192.168.99.41"
dut_peer.vtysh_cmd("clear bgp {0}".format(peer))
_test_wait_for_multipath_convergence(dut)
_test_rmac_present(dut)
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()