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| -rw-r--r-- | tests/topotests/isis_topo1/test_isis_topo1.py | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/tests/topotests/isis_topo1/test_isis_topo1.py b/tests/topotests/isis_topo1/test_isis_topo1.py index 608ef48ff4..baacba613d 100644 --- a/tests/topotests/isis_topo1/test_isis_topo1.py +++ b/tests/topotests/isis_topo1/test_isis_topo1.py @@ -520,6 +520,67 @@ def test_isis_overload_on_startup_override_timer(): check_lsp_overload_bit("r3", "r3.00-00", "0/0/1") +def test_isis_advertise_passive_only(): + """Check that we only advertise prefixes of passive interfaces when advertise-passive-only is enabled.""" + tgen = get_topogen() + net = get_topogen().net + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + logger.info("Testing isis advertise-passive-only behavior") + expected_prefixes_no_advertise_passive_only = set( + ["10.0.20.0/24", "10.254.0.1/32", "2001:db8:f::1/128", "2001:db8:1:1::/64"] + ) + expected_prefixes_advertise_passive_only = set( + ["10.254.0.1/32", "2001:db8:f::1/128"] + ) + lsp_id = "r1.00-00" + + r1 = tgen.gears["r1"] + r1.vtysh_cmd( + """ + configure + router isis 1 + no redistribute ipv4 connected level-2 + no redistribute ipv6 connected level-2 + interface lo + ip router isis 1 + ipv6 router isis 1 + isis passive + end + """ + ) + + result = check_advertised_prefixes( + r1, lsp_id, expected_prefixes_no_advertise_passive_only + ) + assert result is True, result + + r1.vtysh_cmd( + """ + configure + router isis 1 + advertise-passive-only + end + """ + ) + + result = check_advertised_prefixes( + r1, lsp_id, expected_prefixes_advertise_passive_only + ) + assert result is True, result + + +@retry(retry_timeout=5) +def check_advertised_prefixes(router, lsp_id, expected_prefixes): + output = router.vtysh_cmd("show isis database detail {}".format(lsp_id)) + prefixes = set(re.findall(r"IP(?:v6)? Reachability: (.*) \(Metric: 10\)", output)) + if prefixes == expected_prefixes: + return True + return str({"expected_prefixes:": expected_prefixes, "prefixes": prefixes}) + + @retry(retry_timeout=200) def _check_lsp_overload_bit(router, overloaded_router_lsp, att_p_ol_expected): "Verfiy overload bit in router's LSP" |