def test_ospf_convergence():
"Test for OSPFv2 convergence"
tgen = get_topogen()
# Required linux kernel version for this suite to run.
result = required_linux_kernel_version("4.15")
if result is not True:
pytest.skip("Kernel requirements are not met")
# iproute2 needs to support VRFs for this suite to run.
if not iproute2_is_vrf_capable():
pytest.skip("Installed iproute2 version does not support VRFs")
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("Checking OSPFv2 convergence on router r1 for VRF blue")
router = tgen.gears["r1"]
reffile = os.path.join(CWD, "r1/ospf_blue_neighbor.json")
expected = json.loads(open(reffile).read())
test_func = functools.partial(
topotest.router_json_cmp,
router,
"show ip ospf vrf blue neighbor json",
expected,
)
_, res = topotest.run_and_expect(test_func, None, count=60, wait=2)
assertmsg = "OSPF router R1 did not converge on VRF blue"
assert res is None, assertmsg
logger.info("Checking OSPFv2 convergence on router r1 for VRF red")
router = tgen.gears["r1"]
reffile = os.path.join(CWD, "r1/ospf_red_neighbor.json")
expected = json.loads(open(reffile).read())
test_func = functools.partial(topotest.router_json_cmp, router,
"show ip ospf vrf red neighbor json",
expected)
_, res = topotest.run_and_expect(test_func, None, count=60, wait=2)
assertmsg = "OSPF router R1 did not converge on VRF red"
assert res is None, assertmsg
def test_isis_linux_route6_installation():
"Check whether all expected routes are present and installed in the OS"
tgen = get_topogen()
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
# Required linux kernel version for this suite to run.
result = required_linux_kernel_version("4.15")
if result is not True:
pytest.skip("Kernel requirements are not met")
# iproute2 needs to support VRFs for this suite to run.
if not iproute2_is_vrf_capable():
pytest.skip("Installed iproute2 version does not support VRFs")
logger.info("Checking routers for installed ISIS vrf IPv6 routes in OS")
# Check for routes in `ip -6 route show vrf {}-cust1`
for rname, router in tgen.routers().items():
filename = "{0}/{1}/{1}_route6_linux.json".format(CWD, rname)
expected = json.loads(open(filename, "r").read())
actual = topotest.ip6_vrf_route(router)
assertmsg = "Router '{}' OS routes mismatch".format(rname)
assert topotest.json_cmp(actual, expected) is None, assertmsg
def test_linux_ipv6_kernel_routingTable():
# Required linux kernel version for this suite to run.
result = required_linux_kernel_version("4.15")
if result is not True:
pytest.skip("Kernel requirements are not met")
# iproute2 needs to support VRFs for this suite to run.
if not iproute2_is_vrf_capable():
pytest.skip("Installed iproute2 version does not support VRFs")
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip("skipped because of router(s) failure")
# Verify Linux Kernel Routing Table
logger.info("Verifying Linux IPv6 Kernel Routing Table")
failures = 0
# Get a list of all current link-local addresses first as they change for
# each run and we need to translate them
linklocals = []
for i in range(1, 5):
linklocals += tgen.net["r{}".format(i)].get_ipv6_linklocal()
# Now compare the routing tables (after substituting link-local addresses)
for i in range(1, 5):
# Actual output from router
actual = tgen.gears["r{}".format(i)].run(
"ip -6 route show vrf r{}-cust1".format(i)).rstrip()
if "nhid" in actual:
refTableFile = os.path.join(CWD,
"r{}/ip_6_address.nhg.ref".format(i))
else:
refTableFile = os.path.join(CWD, "r{}/ip_6_address.ref".format(i))
if os.path.isfile(refTableFile):
expected = open(refTableFile).read().rstrip()
# Fix newlines (make them all the same)
expected = ("\n".join(expected.splitlines())).splitlines(1)
# Mask out Link-Local mac addresses
for ll in linklocals:
actual = actual.replace(ll[1], "fe80::__(%s)__" % ll[0])
# Mask out protocol name or number
actual = re.sub(r"[ ]+proto [0-9a-z]+ +", " proto XXXX ", actual)
actual = re.sub(r"[ ]+nhid [0-9]+ +", " nhid XXXX ", actual)
# Remove ff00::/8 routes (seen on some kernels - not from FRR)
actual = re.sub(r"ff00::/8.*", "", actual)
# Strip empty lines
actual = actual.lstrip()
actual = actual.rstrip()
actual = re.sub(r" +", " ", actual)
filtered_lines = []
for line in sorted(actual.splitlines()):
if line.startswith("fe80::/64 ") or line.startswith(
"unreachable fe80::/64 "):
continue
if 'anycast' in line:
continue
if 'multicast' in line:
continue
filtered_lines.append(line)
actual = "\n".join(filtered_lines).splitlines(1)
# Print Actual table
# logger.info("Router r%s table" % i)
# for line in actual:
# logger.info(line.rstrip())
# Generate Diff
diff = topotest.get_textdiff(
actual,
expected,
title1="actual OSPFv3 IPv6 routing table",
title2="expected OSPFv3 IPv6 routing table",
)
# Empty string if it matches, otherwise diff contains unified diff
if diff:
sys.stderr.write(
"r%s failed Linux IPv6 Kernel Routing Table Check:\n%s\n" %
(i, diff))
failures += 1
else:
logger.info("r%s ok" % i)
assert failures == 0, (
"Linux Kernel IPv6 Routing Table verification failed for router r%s:\n%s"
% (i, diff))