frr/tests/topotests/ospf_p2mp/test_ospf_p2mp_broadcast.py
Daniel Baumann a2d156806a
Merging upstream version 10.2.
Signed-off-by: Daniel Baumann <daniel@debian.org>
2025-02-05 10:17:20 +01:00

524 lines
18 KiB
Python

#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# test_ospf_prefix_p2mp_broadcast.py
#
# Copyright (c) 2024 LabN Consulting
# Acee Lindem
#
import os
import sys
from time import sleep
from functools import partial
import pytest
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, get_topogen
from lib.topolog import logger
from lib.common_config import (
step,
)
"""
test_ospf_p2mp_broadcast.py: Test OSPF Point-to-multipoint
"""
TOPOLOGY = """
+-----+ +-----+
10.1.1.0/24 | r1 | | r2 | 10.1.2.0/24
-----------+ | | +----------
+--+--+ +--+--+
| 10.1.0.0/24 |
| +-------+ |
+---- | |-----+
| P2MP |
+---- | |-----+
| +-------+ |
| |
| |
+--+--+ +-+---+
10.1.3.0/24 | r3 | | r4 | 10.1.4.0/24
-----------+ | | +----------
+-----+ +-----+
"""
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# Required to instantiate the topology builder class.
pytestmark = [pytest.mark.ospfd, pytest.mark.bgpd]
def build_topo(tgen):
"Build function"
# Create 4 routers
tgen.add_router("r1")
tgen.add_router("r2")
tgen.add_router("r3")
tgen.add_router("r4")
# Interconect them all to the P2MP network
switch = tgen.add_switch("s0-p2mp")
switch.add_link(tgen.gears["r1"])
switch.add_link(tgen.gears["r2"])
switch.add_link(tgen.gears["r3"])
switch.add_link(tgen.gears["r4"])
# Add standalone network to router 1
switch = tgen.add_switch("s-r1-1")
switch.add_link(tgen.gears["r1"])
# Add standalone network to router 2
switch = tgen.add_switch("s-r2-1")
switch.add_link(tgen.gears["r2"])
# Add standalone network to router 3
switch = tgen.add_switch("s-r3-1")
switch.add_link(tgen.gears["r3"])
# Add standalone network to router 4
switch = tgen.add_switch("s-r4-1")
switch.add_link(tgen.gears["r4"])
def setup_module(mod):
logger.info("OSPF Point-to-MultiPoint:\n {}".format(TOPOLOGY))
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
# Starting Routers
router_list = tgen.routers()
for rname, router in router_list.items():
logger.info("Loading router %s" % rname)
router.load_frr_config(os.path.join(CWD, "{}/frr-p2mp.conf".format(rname)))
# Initialize all routers.
tgen.start_router()
def teardown_module():
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
def verify_p2mp_interface(
tgen, router, nbr_cnt, nbr_adj_cnt, delay_reflood, nbr_filter
):
"Verify the P2MP Configuration and interface settings"
topo_router = tgen.gears[router]
step("Test running configuration for P2MP configuration")
rc = 0
rc, _, _ = tgen.net[router].cmd_status(
"show running ospfd | grep 'ip ospf network point-to-multipoint'", warn=False
)
assertmsg = (
"'ip ospf network point-to-multipoint' applied, but not present in "
+ router
+ "configuration"
)
assert rc, assertmsg
step("Test OSPF interface for P2MP settings")
input_dict = {
"interfaces": {
"r1-eth0": {
"ospfEnabled": True,
"ipAddress": "10.1.0.1",
"ipAddressPrefixlen": 24,
"ospfIfType": "Broadcast",
"area": "0.0.0.0",
"routerId": "1.1.1.1",
"networkType": "POINTOMULTIPOINT",
"cost": 10,
"state": "Point-To-Point",
"opaqueCapable": True,
"nbrCount": nbr_cnt,
"nbrAdjacentCount": nbr_adj_cnt,
"prefixSuppression": False,
"p2mpDelayReflood": delay_reflood,
"nbrFilterPrefixList": nbr_filter,
}
}
}
test_func = partial(
topotest.router_json_cmp,
topo_router,
"show ip ospf interface r1-eth0 json",
input_dict,
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assertmsg = "P2MP Interface Mismatch on router r1"
assert result is None, assertmsg
def verify_non_p2mp_interface(tgen):
"Verify the removal of P2MP Configuration and interface settings"
r1 = tgen.gears["r1"]
step("Test running configuration for removal of P2MP configuration")
rc = 0
rc, _, _ = tgen.net["r1"].cmd_status(
"show running ospfd | grep -q 'ip ospf network point-to-multipoint'", warn=False
)
assertmsg = "'ip ospf network point-to-multipoint' not applied, but present in r1 configuration"
assert rc, assertmsg
step("Test OSPF interface for default settings")
input_dict = {
"interfaces": {
"r1-eth0": {
"ospfEnabled": True,
"ipAddress": "10.1.0.1",
"ipAddressPrefixlen": 24,
"ospfIfType": "Broadcast",
"area": "0.0.0.0",
"routerId": "1.1.1.1",
"networkType": "BROADCAST",
"cost": 10,
"opaqueCapable": True,
"prefixSuppression": False,
}
}
}
test_func = partial(
topotest.router_json_cmp, r1, "show ip ospf interface r1-eth0 json", input_dict
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assertmsg = "P2MP Interface Mismatch on router r1"
assert result is None, assertmsg
def verify_p2mp_neighbor(tgen, router, neighbor, state, intf_addr, interface):
topo_router = tgen.gears[router]
step("Verify neighbor " + neighbor + " in " + state + " state")
input_dict = {
"default": {
neighbor: [
{
"nbrState": state,
"ifaceAddress": intf_addr,
"ifaceName": interface,
}
],
}
}
test_func = partial(
topotest.router_json_cmp,
topo_router,
"show ip ospf neighbor " + neighbor + " json",
input_dict,
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assertmsg = "P2MP Neighbor " + neighbor + " not in " + state
assert result is None, assertmsg
def verify_p2mp_neighbor_missing(tgen, router, neighbor):
topo_router = tgen.gears[router]
step("Verify neighbor " + neighbor + " missing")
input_dict = {"default": {}}
test_func = partial(
topotest.router_json_cmp,
topo_router,
"show ip ospf neighbor " + neighbor + " json",
input_dict,
True, # Require exact match for missing neighbor
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assertmsg = "P2MP Neighbor " + neighbor + " not missing"
assert result is None, assertmsg
def verify_p2mp_route(tgen, router, prefix, prefix_len, nexthop, interface):
topo_router = tgen.gears[router]
step("Verify router " + router + " p2mp route " + prefix + " installed")
input_dict = {
prefix: [
{
"prefix": prefix,
"prefixLen": prefix_len,
"protocol": "ospf",
"nexthops": [
{
"ip": nexthop,
"interfaceName": interface,
}
],
}
]
}
test_func = partial(
topotest.router_json_cmp,
topo_router,
"show ip route " + prefix + " json",
input_dict,
)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assertmsg = prefix + " not installed on router " + router
assert result is None, assertmsg
def test_p2mp_broadcast_interface():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip("Skipped because of router(s) failure")
step("Verify router r1 interface r1-eth0 p2mp configuration")
verify_p2mp_interface(tgen, "r1", 3, 3, False, "N/A")
step("Verify router r1 p2mp interface r1-eth0 neighbors")
verify_p2mp_neighbor(
tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "3.3.3.3", "Full/DROther", "10.1.0.3", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "4.4.4.4", "Full/DROther", "10.1.0.4", "r1-eth0:10.1.0.1"
)
step("Verify router r1 p2mp routes installed")
verify_p2mp_route(tgen, "r1", "10.1.2.0/24", 24, "10.1.0.2", "r1-eth0")
verify_p2mp_route(tgen, "r1", "10.1.3.0/24", 24, "10.1.0.3", "r1-eth0")
verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.4", "r1-eth0")
step("Verify router r1 interface r1-eth0 p2mp configuration removal")
r1 = tgen.gears["r1"]
r1.vtysh_cmd("conf t\ninterface r1-eth0\nno ip ospf network point-to-multipoint")
verify_non_p2mp_interface(tgen)
step("Verify router r1 interface r1-eth0 p2mp configuration application")
r1.vtysh_cmd("conf t\ninterface r1-eth0\nip ospf network point-to-multipoint")
verify_p2mp_interface(tgen, "r1", 3, 3, False, "N/A")
step("Verify restablishment of r1-eth0 p2mp neighbors")
verify_p2mp_neighbor(
tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "3.3.3.3", "Full/DROther", "10.1.0.3", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "4.4.4.4", "Full/DROther", "10.1.0.4", "r1-eth0:10.1.0.1"
)
step("Verify router r1 p2mp routes reinstalled")
verify_p2mp_route(tgen, "r1", "10.1.2.0/24", 24, "10.1.0.2", "r1-eth0")
verify_p2mp_route(tgen, "r1", "10.1.3.0/24", 24, "10.1.0.3", "r1-eth0")
verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.4", "r1-eth0")
def p2mp_broadcast_neighbor_filter_common(delay_reflood):
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip("Skipped because of router(s) failure")
step("Verify router r1 interface r1-eth0 p2mp configuration")
verify_p2mp_interface(tgen, "r1", 3, 3, delay_reflood, "N/A")
step("Verify router r1 p2mp interface r1-eth0 neighbors")
verify_p2mp_neighbor(
tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "3.3.3.3", "Full/DROther", "10.1.0.3", "r1-eth0:10.1.0.1"
)
verify_p2mp_neighbor(
tgen, "r1", "4.4.4.4", "Full/DROther", "10.1.0.4", "r1-eth0:10.1.0.1"
)
step("Add OSPF interface neighbor-filter to r1")
r1 = tgen.gears["r1"]
r1.vtysh_cmd("conf t\ninterface r1-eth0\nip ospf neighbor-filter nbr-filter")
step("Verify the R1 configuration of 'ip ospf neighbor-filter nbr-filter'")
neighbor_filter_cfg = (
tgen.net["r1"]
.cmd(
'vtysh -c "show running ospfd" | grep "^ ip ospf neighbor-filter nbr-filter"'
)
.rstrip()
)
assertmsg = (
"'ip ospf neighbor-filter nbr-filter' applied, but not present in configuration"
)
assert neighbor_filter_cfg == " ip ospf neighbor-filter nbr-filter", assertmsg
step("Verify non-existent neighbor-filter is not applied to r1 interfaces")
verify_p2mp_interface(tgen, "r1", 3, 3, delay_reflood, "N/A")
step("Add nbr-filter prefix-list configuration to r1")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 200 permit any")
step(
"Verify neighbor-filter is now applied to r1 interface and neighbors still adjacent"
)
verify_p2mp_interface(tgen, "r1", 3, 3, delay_reflood, "nbr-filter")
step("Add nbr-filter prefix-list configuration to block r4")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 10 deny 10.1.0.4/32")
step(
"Verify neighbor-filter is now applied to r1 interface and r4 is no longer adjacent"
)
verify_p2mp_interface(tgen, "r1", 2, 2, delay_reflood, "nbr-filter")
verify_p2mp_neighbor_missing(tgen, "r1", "4.4.4.4")
step("Verify route to r4 subnet is now through r2")
verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.2", "r1-eth0")
step("Add nbr-filter prefix-list configuration to block r2")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 20 deny 10.1.0.2/32")
step(
"Verify neighbor-filter is now applied to r1 interface and r2 is no longer adjacent"
)
verify_p2mp_interface(tgen, "r1", 1, 1, delay_reflood, "nbr-filter")
verify_p2mp_neighbor_missing(tgen, "r1", "2.2.2.2")
step("Verify route to r4 and r2 subnet are now through r3")
verify_p2mp_route(tgen, "r1", "10.1.2.0/24", 24, "10.1.0.3", "r1-eth0")
verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.3", "r1-eth0")
step("Remove neighbor filter configuration and verify")
r1.vtysh_cmd("conf t\ninterface r1-eth0\nno ip ospf neighbor-filter")
rc, _, _ = tgen.net["r1"].cmd_status(
"show running ospfd | grep -q 'ip ospf neighbor-filter'", warn=False
)
assertmsg = "'ip ospf neighbor' not applied, but present in R1 configuration"
assert rc, assertmsg
step("Verify interface neighbor-filter is removed and neighbors present")
verify_p2mp_interface(tgen, "r1", 3, 3, delay_reflood, "N/A")
step("Add neighbor filter configuration and verify neighbors are filtered")
r1.vtysh_cmd("conf t\ninterface r1-eth0\nip ospf neighbor-filter nbr-filter")
verify_p2mp_interface(tgen, "r1", 1, 1, delay_reflood, "nbr-filter")
verify_p2mp_neighbor_missing(tgen, "r1", "2.2.2.2")
verify_p2mp_neighbor_missing(tgen, "r1", "4.4.4.4")
step("Remove nbr-filter prefix-list configuration to block r2 and verify neighbor")
r1.vtysh_cmd("conf t\nno ip prefix-list nbr-filter seq 20")
verify_p2mp_interface(tgen, "r1", 2, 2, delay_reflood, "nbr-filter")
verify_p2mp_neighbor(
tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
)
step("Delete nbr-filter prefix-list and verify neighbors are present")
r1.vtysh_cmd("conf t\nno ip prefix-list nbr-filter")
verify_p2mp_interface(tgen, "r1", 3, 3, delay_reflood, "N/A")
def test_p2mp_broadcast_neighbor_filter():
p2mp_broadcast_neighbor_filter_common(False)
def test_p2mp_broadcast_neighbor_filter_delay_reflood():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip("Skipped because of router(s) failure")
step("Modify router r1 interface r1-eth0 p2mp delay-reflood configuration")
r1 = tgen.gears["r1"]
r1.vtysh_cmd(
"conf t\ninterface r1-eth0\nip ospf network point-to-multipoint delay-reflood"
)
verify_p2mp_interface(tgen, "r1", 3, 3, True, "N/A")
step("Modify router r2 interface r2-eth0 p2mp delay-reflood configuration")
r2 = tgen.gears["r2"]
r2.vtysh_cmd(
"conf t\ninterface r2-eth0\nip ospf network point-to-multipoint delay-reflood"
)
step("Modify router r3 interface r3-eth0 p2mp delay-reflood configuration")
r3 = tgen.gears["r3"]
r3.vtysh_cmd(
"conf t\ninterface r3-eth0\nip ospf network point-to-multipoint delay-reflood"
)
step("Modify router r4 interface r4-eth0 p2mp delay-reflood configuration")
r4 = tgen.gears["r4"]
r4.vtysh_cmd(
"conf t\ninterface r4-eth0\nip ospf network point-to-multipoint delay-reflood"
)
p2mp_broadcast_neighbor_filter_common(True)
step("Recreate a partial P2MP mesh with neighbor filters")
step("Add nbr-filter prefix-list configuration to block r4")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 30 permit any")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 10 deny 10.1.0.3/32")
r1.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 20 deny 10.1.0.4/32")
r1.vtysh_cmd("conf t\ninterface r1-eth0\nip ospf neighbor-filter nbr-filter")
r2.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 30 permit any")
r2.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 10 deny 10.1.0.4/32")
r2.vtysh_cmd("conf t\ninterface r2-eth0\nip ospf neighbor-filter nbr-filter")
r3.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 30 permit any")
r3.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 10 deny 10.1.0.1/32")
r3.vtysh_cmd("conf t\ninterface r3-eth0\nip ospf neighbor-filter nbr-filter")
r4.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 30 permit any")
r4.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 10 deny 10.1.0.1/32")
r4.vtysh_cmd("conf t\nip prefix-list nbr-filter seq 20 deny 10.1.0.2/32")
r4.vtysh_cmd("conf t\ninterface r4-eth0\nip ospf neighbor-filter nbr-filter")
step(
"Add redistribution and spaced static routes to r1 to test delay flood retransmission"
)
r1.vtysh_cmd("conf t\nrouter ospf\nredistribute static")
r1.vtysh_cmd("conf t\nip route 20.1.1.1/32 null0")
sleep(1)
r1.vtysh_cmd("conf t\nip route 20.1.1.2/32 null0")
sleep(1)
r1.vtysh_cmd("conf t\nip route 20.1.1.3/32 null0")
sleep(1)
r1.vtysh_cmd("conf t\nip route 20.1.1.4/32 null0")
sleep(1)
r1.vtysh_cmd("conf t\nip route 20.1.1.5/32 null0")
sleep(1)
step(
"Verify the routes are installed on r1 with delay-reflood in P2MP partial mesh"
)
verify_p2mp_route(tgen, "r4", "20.1.1.1/32", 32, "10.1.0.3", "r4-eth0")
verify_p2mp_route(tgen, "r4", "20.1.1.2/32", 32, "10.1.0.3", "r4-eth0")
verify_p2mp_route(tgen, "r4", "20.1.1.3/32", 32, "10.1.0.3", "r4-eth0")
verify_p2mp_route(tgen, "r4", "20.1.1.4/32", 32, "10.1.0.3", "r4-eth0")
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip("Memory leak test/report is disabled")
tgen.report_memory_leaks()
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))