586 lines
19 KiB
Python
586 lines
19 KiB
Python
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#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_ospf_topo1.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2017 by
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# Network Device Education Foundation, Inc. ("NetDEF")
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#
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"""
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test_ospf_topo1.py: Test the FRR OSPF routing daemon.
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"""
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import os
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import re
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import sys
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from functools import partial
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from time import sleep
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import pytest
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# Save the Current Working Directory to find configuration files.
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.topolog import logger
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# Required to instantiate the topology builder class.
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pytestmark = [pytest.mark.ospfd]
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def build_topo(tgen):
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"Build function"
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# Create 4 routers
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for routern in range(1, 5):
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tgen.add_router("r{}".format(routern))
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# Create a empty network for router 1
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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# Create a empty network for router 2
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r2"])
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# Interconect router 1, 2 and 3
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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switch.add_link(tgen.gears["r3"])
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# Create empty netowrk for router3
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switch = tgen.add_switch("s4")
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switch.add_link(tgen.gears["r3"])
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# Interconect router 3 and 4
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switch = tgen.add_switch("s5")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r4"])
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# Create a empty network for router 4
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switch = tgen.add_switch("s6")
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switch.add_link(tgen.gears["r4"])
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def setup_module(mod):
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"Sets up the pytest environment"
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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ospf6_config = "ospf6d.conf"
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router_list = tgen.routers()
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for rname, router in router_list.items():
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_OSPF, os.path.join(CWD, "{}/ospfd.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_OSPF6, os.path.join(CWD, "{}/{}".format(rname, ospf6_config))
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)
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# Initialize all routers.
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tgen.start_router()
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def teardown_module(mod):
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"Teardown the pytest environment"
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tgen = get_topogen()
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tgen.stop_topology()
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def test_wait_protocol_convergence():
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"Wait for OSPFv2/OSPFv3 to converge"
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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logger.info("waiting for protocols to converge")
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def expect_ospfv2_neighbor_full(router, neighbor):
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"Wait until OSPFv2 convergence."
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logger.info("waiting OSPFv2 router '{}'".format(router))
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def run_command_and_expect():
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"""
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Function that runs command and expect the following outcomes:
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* Full/DR
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* Full/DROther
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* Full/Backup
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"""
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result = tgen.gears[router].vtysh_cmd(
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"show ip ospf neighbor json", isjson=True
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)
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if (
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topotest.json_cmp(
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result, {"neighbors": {neighbor: [{"converged": "Full"}]}}
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)
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is None
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):
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return None
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if (
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topotest.json_cmp(
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result, {"neighbors": {neighbor: [{"converged": "Full"}]}}
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)
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is None
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):
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return None
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return topotest.json_cmp(
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result, {"neighbors": {neighbor: [{"converged": "Full"}]}}
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)
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_, result = topotest.run_and_expect(
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run_command_and_expect, None, count=130, wait=1
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)
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assertmsg = '"{}" convergence failure'.format(router)
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assert result is None, assertmsg
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def expect_ospfv3_neighbor_full(router, neighbor):
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"Wait until OSPFv3 convergence."
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logger.info("waiting OSPFv3 router '{}'".format(router))
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test_func = partial(
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topotest.router_json_cmp,
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tgen.gears[router],
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"show ipv6 ospf6 neighbor json",
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{"neighbors": [{"neighborId": neighbor, "state": "Full"}]},
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)
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_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
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assertmsg = '"{}" convergence failure'.format(router)
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assert result is None, assertmsg
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# Wait for OSPFv2 convergence
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expect_ospfv2_neighbor_full("r1", "10.0.255.2")
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expect_ospfv2_neighbor_full("r1", "10.0.255.3")
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expect_ospfv2_neighbor_full("r2", "10.0.255.1")
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expect_ospfv2_neighbor_full("r2", "10.0.255.3")
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expect_ospfv2_neighbor_full("r3", "10.0.255.1")
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expect_ospfv2_neighbor_full("r3", "10.0.255.2")
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expect_ospfv2_neighbor_full("r3", "10.0.255.4")
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expect_ospfv2_neighbor_full("r4", "10.0.255.3")
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# Wait for OSPFv3 convergence
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expect_ospfv3_neighbor_full("r1", "10.0.255.2")
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expect_ospfv3_neighbor_full("r1", "10.0.255.3")
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expect_ospfv3_neighbor_full("r2", "10.0.255.1")
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expect_ospfv3_neighbor_full("r2", "10.0.255.3")
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expect_ospfv3_neighbor_full("r3", "10.0.255.1")
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expect_ospfv3_neighbor_full("r3", "10.0.255.2")
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expect_ospfv3_neighbor_full("r3", "10.0.255.4")
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expect_ospfv3_neighbor_full("r4", "10.0.255.3")
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def compare_show_ipv6_ospf6(rname, expected):
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"""
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Calls 'show ipv6 ospf6 route' for router `rname` and compare the obtained
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result with the expected output.
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"""
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tgen = get_topogen()
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current = tgen.gears[rname].vtysh_cmd("show ipv6 ospf6 route")
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# Remove the link addresses
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current = re.sub(r"fe80::[^ ]+", "fe80::xxxx:xxxx:xxxx:xxxx", current)
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expected = re.sub(r"fe80::[^ ]+", "fe80::xxxx:xxxx:xxxx:xxxx", expected)
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# Remove the time
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current = re.sub(r"\d+:\d{2}:\d{2}", "", current)
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expected = re.sub(r"\d+:\d{2}:\d{2}", "", expected)
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return topotest.difflines(
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topotest.normalize_text(current),
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topotest.normalize_text(expected),
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title1="Current output",
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title2="Expected output",
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)
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def test_ospf_convergence():
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"Test OSPF daemon convergence"
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip("skipped because of router(s) failure")
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for router, rnode in tgen.routers().items():
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logger.info('Waiting for router "%s" convergence', router)
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# Load expected results from the command
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reffile = os.path.join(CWD, "{}/ospfroute.txt".format(router))
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expected = open(reffile).read()
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# Run test function until we get an result. Wait at most 80 seconds.
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test_func = partial(
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topotest.router_output_cmp, rnode, "show ip ospf route", expected
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)
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result, diff = topotest.run_and_expect(test_func, "", count=160, wait=0.5)
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assert result, "OSPF did not converge on {}:\n{}".format(router, diff)
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def test_ospf_kernel_route():
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"Test OSPF kernel route installation"
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip("skipped because of router(s) failure")
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rlist = tgen.routers().values()
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for router in rlist:
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logger.info('Checking OSPF IPv4 kernel routes in "%s"', router.name)
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routes = topotest.ip4_route(router)
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expected = {
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"10.0.1.0/24": {},
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"10.0.2.0/24": {},
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"10.0.3.0/24": {},
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"10.0.10.0/24": {},
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"172.16.0.0/24": {},
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"172.16.1.0/24": {},
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}
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assertmsg = 'OSPF IPv4 route mismatch in router "{}"'.format(router.name)
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assert topotest.json_cmp(routes, expected) is None, assertmsg
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def test_ospf6_convergence():
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"Test OSPF6 daemon convergence"
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip("skipped because of router(s) failure")
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ospf6route_file = "{}/ospf6route_ecmp.txt"
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for rnum in range(1, 5):
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router = "r{}".format(rnum)
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logger.info('Waiting for router "%s" IPv6 OSPF convergence', router)
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# Load expected results from the command
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reffile = os.path.join(CWD, ospf6route_file.format(router))
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expected = open(reffile).read()
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# Run test function until we get an result. Wait at most 60 seconds.
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test_func = partial(compare_show_ipv6_ospf6, router, expected)
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result, diff = topotest.run_and_expect(test_func, "", count=25, wait=3)
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if (not result) and (rnum == 1):
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# Didn't match the new ECMP version - try the old pre-ECMP format
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ospf6route_file = "{}/ospf6route.txt"
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# Load expected results from the command
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reffile = os.path.join(CWD, ospf6route_file.format(router))
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expected = open(reffile).read()
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test_func = partial(compare_show_ipv6_ospf6, router, expected)
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result, diff = topotest.run_and_expect(test_func, "", count=1, wait=3)
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if not result:
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# Didn't match the old version - switch back to new ECMP version
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# and fail
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ospf6route_file = "{}/ospf6route_ecmp.txt"
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# Load expected results from the command
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reffile = os.path.join(CWD, ospf6route_file.format(router))
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expected = open(reffile).read()
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test_func = partial(compare_show_ipv6_ospf6, router, expected)
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result, diff = topotest.run_and_expect(test_func, "", count=1, wait=3)
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assert result, "OSPF6 did not converge on {}:\n{}".format(router, diff)
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def test_ospf6_kernel_route():
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"Test OSPF kernel route installation"
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip("skipped because of router(s) failure")
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rlist = tgen.routers().values()
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for router in rlist:
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logger.info('Checking OSPF IPv6 kernel routes in "%s"', router.name)
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def _routes_in_fib6():
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routes = topotest.ip6_route(router)
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expected = {
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"2001:db8:1::/64": {},
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"2001:db8:2::/64": {},
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"2001:db8:3::/64": {},
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"2001:db8:100::/64": {},
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"2001:db8:200::/64": {},
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"2001:db8:300::/64": {},
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}
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logger.info("Routes:")
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logger.info(routes)
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logger.info(topotest.json_cmp(routes, expected))
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logger.info("ENd:")
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return topotest.json_cmp(routes, expected)
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_, result = topotest.run_and_expect(_routes_in_fib6, None, count=20, wait=1)
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assertmsg = 'OSPF IPv6 route mismatch in router "{}"'.format(router.name)
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assert result is None, assertmsg
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def test_ospf_json():
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"Test 'show ip ospf json' output for coherency."
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip("skipped because of router(s) failure")
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for rnum in range(1, 5):
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router = tgen.gears["r{}".format(rnum)]
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logger.info(router.vtysh_cmd("show ip ospf database"))
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logger.info('Comparing router "%s" "show ip ospf json" output', router.name)
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expected = {
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"routerId": "10.0.255.{}".format(rnum),
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"tosRoutesOnly": True,
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"rfc2328Conform": True,
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"spfScheduleDelayMsecs": 0,
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"holdtimeMinMsecs": 50,
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"holdtimeMaxMsecs": 5000,
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"lsaMinIntervalMsecs": 5000,
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"lsaMinArrivalMsecs": 1000,
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"writeMultiplier": 20,
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"refreshTimerMsecs": 10000,
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"asbrRouter": "injectingExternalRoutingInformation",
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"attachedAreaCounter": 1,
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|
"areas": {},
|
||
|
|
}
|
||
|
|
# Area specific additional checks
|
||
|
|
if router.name == "r1" or router.name == "r2" or router.name == "r3":
|
||
|
|
expected["areas"]["0.0.0.0"] = {
|
||
|
|
"areaIfActiveCounter": 2,
|
||
|
|
"areaIfTotalCounter": 2,
|
||
|
|
"authentication": "authenticationNone",
|
||
|
|
"backbone": True,
|
||
|
|
"lsaAsbrNumber": 1,
|
||
|
|
"lsaNetworkNumber": 1,
|
||
|
|
"lsaNssaNumber": 0,
|
||
|
|
"lsaNumber": 7,
|
||
|
|
"lsaOpaqueAreaNumber": 0,
|
||
|
|
"lsaOpaqueLinkNumber": 0,
|
||
|
|
"lsaRouterNumber": 3,
|
||
|
|
"lsaSummaryNumber": 2,
|
||
|
|
"nbrFullAdjacentCounter": 2,
|
||
|
|
}
|
||
|
|
if router.name == "r3" or router.name == "r4":
|
||
|
|
expected["areas"]["0.0.0.1"] = {
|
||
|
|
"areaIfActiveCounter": 1,
|
||
|
|
"areaIfTotalCounter": 1,
|
||
|
|
"authentication": "authenticationNone",
|
||
|
|
"lsaAsbrNumber": 2,
|
||
|
|
"lsaNetworkNumber": 1,
|
||
|
|
"lsaNssaNumber": 0,
|
||
|
|
"lsaNumber": 9,
|
||
|
|
"lsaOpaqueAreaNumber": 0,
|
||
|
|
"lsaOpaqueLinkNumber": 0,
|
||
|
|
"lsaRouterNumber": 2,
|
||
|
|
"lsaSummaryNumber": 4,
|
||
|
|
"nbrFullAdjacentCounter": 1,
|
||
|
|
}
|
||
|
|
# r4 has more interfaces for area 0.0.0.1
|
||
|
|
if router.name == "r4":
|
||
|
|
expected["areas"]["0.0.0.1"].update(
|
||
|
|
{
|
||
|
|
"areaIfActiveCounter": 2,
|
||
|
|
"areaIfTotalCounter": 2,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
|
||
|
|
# router 3 has an additional area
|
||
|
|
if router.name == "r3":
|
||
|
|
expected["attachedAreaCounter"] = 2
|
||
|
|
|
||
|
|
output = router.vtysh_cmd("show ip ospf json", isjson=True)
|
||
|
|
result = topotest.json_cmp(output, expected)
|
||
|
|
assert result is None, '"{}" JSON output mismatches the expected result'.format(
|
||
|
|
router.name
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_link_down():
|
||
|
|
"Test OSPF convergence after a link goes down"
|
||
|
|
tgen = get_topogen()
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
# Simulate a network down event on router3 switch3 interface.
|
||
|
|
router3 = tgen.gears["r3"]
|
||
|
|
router3.peer_link_enable("r3-eth0", False)
|
||
|
|
|
||
|
|
# Expect convergence on all routers
|
||
|
|
for router, rnode in tgen.routers().items():
|
||
|
|
logger.info('Waiting for router "%s" convergence after link failure', router)
|
||
|
|
# Load expected results from the command
|
||
|
|
reffile = os.path.join(CWD, "{}/ospfroute_down.txt".format(router))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
|
||
|
|
# Run test function until we get an result. Wait at most 80 seconds.
|
||
|
|
test_func = partial(
|
||
|
|
topotest.router_output_cmp, rnode, "show ip ospf route", expected
|
||
|
|
)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=140, wait=0.5)
|
||
|
|
assert result, "OSPF did not converge on {}:\n{}".format(router, diff)
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf_link_down_kernel_route():
|
||
|
|
"Test OSPF kernel route installation"
|
||
|
|
tgen = get_topogen()
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
rlist = tgen.routers().values()
|
||
|
|
for router in rlist:
|
||
|
|
logger.info(
|
||
|
|
'Checking OSPF IPv4 kernel routes in "%s" after link down', router.name
|
||
|
|
)
|
||
|
|
|
||
|
|
routes = topotest.ip4_route(router)
|
||
|
|
expected = {
|
||
|
|
"10.0.1.0/24": {},
|
||
|
|
"10.0.2.0/24": {},
|
||
|
|
"10.0.3.0/24": {},
|
||
|
|
"10.0.10.0/24": {},
|
||
|
|
"172.16.0.0/24": {},
|
||
|
|
"172.16.1.0/24": {},
|
||
|
|
}
|
||
|
|
if router.name == "r1" or router.name == "r2":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"10.0.10.0/24": None,
|
||
|
|
"172.16.0.0/24": None,
|
||
|
|
"172.16.1.0/24": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
elif router.name == "r3" or router.name == "r4":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"10.0.1.0/24": None,
|
||
|
|
"10.0.2.0/24": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
# Route '10.0.3.0' is no longer available for r4 since it is down.
|
||
|
|
if router.name == "r4":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"10.0.3.0/24": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
assertmsg = 'OSPF IPv4 route mismatch in router "{}" after link down'.format(
|
||
|
|
router.name
|
||
|
|
)
|
||
|
|
count = 0
|
||
|
|
not_found = True
|
||
|
|
while not_found and count < 10:
|
||
|
|
not_found = topotest.json_cmp(routes, expected)
|
||
|
|
if not_found:
|
||
|
|
sleep(1)
|
||
|
|
routes = topotest.ip4_route(router)
|
||
|
|
count += 1
|
||
|
|
else:
|
||
|
|
not_found = False
|
||
|
|
break
|
||
|
|
assert not_found is False, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf6_link_down():
|
||
|
|
"Test OSPF6 daemon convergence after link goes down"
|
||
|
|
tgen = get_topogen()
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
for rnum in range(1, 5):
|
||
|
|
router = "r{}".format(rnum)
|
||
|
|
|
||
|
|
logger.info(
|
||
|
|
'Waiting for router "%s" IPv6 OSPF convergence after link down', router
|
||
|
|
)
|
||
|
|
|
||
|
|
# Load expected results from the command
|
||
|
|
reffile = os.path.join(CWD, "{}/ospf6route_down.txt".format(router))
|
||
|
|
expected = open(reffile).read()
|
||
|
|
|
||
|
|
# Run test function until we get an result. Wait at most 60 seconds.
|
||
|
|
test_func = partial(compare_show_ipv6_ospf6, router, expected)
|
||
|
|
result, diff = topotest.run_and_expect(test_func, "", count=25, wait=3)
|
||
|
|
assert result, "OSPF6 did not converge on {}:\n{}".format(router, diff)
|
||
|
|
|
||
|
|
|
||
|
|
def test_ospf6_link_down_kernel_route():
|
||
|
|
"Test OSPF kernel route installation"
|
||
|
|
tgen = get_topogen()
|
||
|
|
if tgen.routers_have_failure():
|
||
|
|
pytest.skip("skipped because of router(s) failure")
|
||
|
|
|
||
|
|
rlist = tgen.routers().values()
|
||
|
|
for router in rlist:
|
||
|
|
logger.info(
|
||
|
|
'Checking OSPF IPv6 kernel routes in "%s" after link down', router.name
|
||
|
|
)
|
||
|
|
|
||
|
|
routes = topotest.ip6_route(router)
|
||
|
|
expected = {
|
||
|
|
"2001:db8:1::/64": {},
|
||
|
|
"2001:db8:2::/64": {},
|
||
|
|
"2001:db8:3::/64": {},
|
||
|
|
"2001:db8:100::/64": {},
|
||
|
|
"2001:db8:200::/64": {},
|
||
|
|
"2001:db8:300::/64": {},
|
||
|
|
}
|
||
|
|
if router.name == "r1" or router.name == "r2":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"2001:db8:100::/64": None,
|
||
|
|
"2001:db8:200::/64": None,
|
||
|
|
"2001:db8:300::/64": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
elif router.name == "r3" or router.name == "r4":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"2001:db8:1::/64": None,
|
||
|
|
"2001:db8:2::/64": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
# Route '2001:db8:3::/64' is no longer available for r4 since it is down.
|
||
|
|
if router.name == "r4":
|
||
|
|
expected.update(
|
||
|
|
{
|
||
|
|
"2001:db8:3::/64": None,
|
||
|
|
}
|
||
|
|
)
|
||
|
|
assertmsg = 'OSPF IPv6 route mismatch in router "{}" after link down'.format(
|
||
|
|
router.name
|
||
|
|
)
|
||
|
|
count = 0
|
||
|
|
not_found = True
|
||
|
|
while not_found and count < 10:
|
||
|
|
not_found = topotest.json_cmp(routes, expected)
|
||
|
|
if not_found:
|
||
|
|
sleep(1)
|
||
|
|
routes = topotest.ip6_route(router)
|
||
|
|
count += 1
|
||
|
|
else:
|
||
|
|
not_found = False
|
||
|
|
break
|
||
|
|
|
||
|
|
assert not_found is False, assertmsg
|
||
|
|
|
||
|
|
|
||
|
|
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))
|