473 lines
16 KiB
Python
473 lines
16 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_prefix_p2mp_broadcast.py
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#
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# Copyright (c) 2024 LabN Consulting
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# Acee Lindem
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#
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import os
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import sys
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import json
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from time import sleep
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from functools import partial
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import pytest
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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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from lib.common_config import (
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run_frr_cmd,
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shutdown_bringup_interface,
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start_router_daemons,
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step,
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)
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"""
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test_ospf_p2mp_broadcast.py: Test OSPF Point-to-multipoint
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"""
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TOPOLOGY = """
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+-----+ +-----+
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10.1.1.0/24 | r1 | | r2 | 10.1.2.0/24
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-----------+ | | +----------
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+--+--+ +--+--+
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| 10.1.0.0/24 |
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| +-------+ |
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+---- | |-----+
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| P2MP |
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+---- | |-----+
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| +-------+ |
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+--+--+ +-+---+
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10.1.3.0/24 | r3 | | r4 | 10.1.4.0/24
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-----------+ | | +----------
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+-----+ +-----+
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"""
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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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# Required to instantiate the topology builder class.
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pytestmark = [pytest.mark.ospfd, pytest.mark.bgpd]
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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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tgen.add_router("r1")
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tgen.add_router("r2")
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tgen.add_router("r3")
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tgen.add_router("r4")
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# Interconect them all to the P2MP network
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switch = tgen.add_switch("s0-p2mp")
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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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switch.add_link(tgen.gears["r4"])
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# Add standalone network to router 1
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switch = tgen.add_switch("s-r1-1")
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switch.add_link(tgen.gears["r1"])
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# Add standalone network to router 2
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switch = tgen.add_switch("s-r2-1")
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switch.add_link(tgen.gears["r2"])
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# Add standalone network to router 3
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switch = tgen.add_switch("s-r3-1")
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switch.add_link(tgen.gears["r3"])
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# Add standalone network to router 4
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switch = tgen.add_switch("s-r4-1")
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switch.add_link(tgen.gears["r4"])
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def setup_module(mod):
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logger.info("OSPF Point-to-MultiPoint:\n {}".format(TOPOLOGY))
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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# Starting Routers
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router_list = tgen.routers()
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for rname, router in router_list.items():
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logger.info("Loading router %s" % rname)
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router.load_frr_config(os.path.join(CWD, "{}/frr-p2mp.conf".format(rname)))
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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 verify_p2mp_interface(tgen, router, nbr_cnt, nbr_adj_cnt, nbr_filter):
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"Verify the P2MP Configuration and interface settings"
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topo_router = tgen.gears[router]
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step("Test running configuration for P2MP configuration")
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rc = 0
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rc, _, _ = tgen.net[router].cmd_status(
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"show running ospfd | grep 'ip ospf network point-to-multipoint'", warn=False
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)
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assertmsg = (
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"'ip ospf network point-to-multipoint' applied, but not present in "
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+ router
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+ "configuration"
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)
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assert rc, assertmsg
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step("Test OSPF interface for P2MP settings")
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input_dict = {
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"interfaces": {
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"r1-eth0": {
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"ospfEnabled": True,
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"interfaceIp": {
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"10.1.0.1": {
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"ipAddress": "10.1.0.1",
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"ipAddressPrefixlen": 24,
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"ospfIfType": "Broadcast",
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"routerId": "1.1.1.1",
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"networkType": "POINTOMULTIPOINT",
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"cost": 10,
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"state": "Point-To-Point",
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"nbrCount": nbr_cnt,
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"nbrAdjacentCount": nbr_adj_cnt,
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"prefixSuppression": False,
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"p2mpDelayReflood": False,
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"nbrFilterPrefixList": nbr_filter,
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}
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},
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"ipAddress": "10.1.0.1",
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"ipAddressPrefixlen": 24,
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"ospfIfType": "Broadcast",
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"area": "0.0.0.0",
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"routerId": "1.1.1.1",
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"networkType": "POINTOMULTIPOINT",
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"cost": 10,
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"state": "Point-To-Point",
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"opaqueCapable": True,
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"nbrCount": nbr_cnt,
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"nbrAdjacentCount": nbr_adj_cnt,
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"prefixSuppression": False,
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"p2mpDelayReflood": False,
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"nbrFilterPrefixList": nbr_filter,
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}
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}
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}
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test_func = partial(
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topotest.router_json_cmp,
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topo_router,
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"show ip ospf interface r1-eth0 json",
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input_dict,
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)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
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assertmsg = "P2MP Interface Mismatch on router r1"
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assert result is None, assertmsg
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def verify_non_p2mp_interface(tgen):
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"Verify the removal of P2MP Configuration and interface settings"
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r1 = tgen.gears["r1"]
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step("Test running configuration for removal of P2MP configuration")
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rc = 0
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rc, _, _ = tgen.net["r1"].cmd_status(
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"show running ospfd | grep -q 'ip ospf network point-to-multipoint'", warn=False
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)
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assertmsg = "'ip ospf network point-to-multipoint' not applied, but present in r1 configuration"
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assert rc, assertmsg
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step("Test OSPF interface for default settings")
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input_dict = {
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"interfaces": {
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"r1-eth0": {
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"ospfEnabled": True,
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"interfaceIp": {
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"10.1.0.1": {
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"ipAddress": "10.1.0.1",
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"ipAddressPrefixlen": 24,
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"ospfIfType": "Broadcast",
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"routerId": "1.1.1.1",
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"networkType": "BROADCAST",
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"cost": 10,
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"prefixSuppression": False,
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}
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},
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"ipAddress": "10.1.0.1",
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"ipAddressPrefixlen": 24,
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"ospfIfType": "Broadcast",
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"area": "0.0.0.0",
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"routerId": "1.1.1.1",
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"networkType": "BROADCAST",
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"cost": 10,
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"opaqueCapable": True,
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"prefixSuppression": False,
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}
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}
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}
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test_func = partial(
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topotest.router_json_cmp, r1, "show ip ospf interface r1-eth0 json", input_dict
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)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
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assertmsg = "P2MP Interface Mismatch on router r1"
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assert result is None, assertmsg
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def verify_p2mp_neighbor(tgen, router, neighbor, state, intf_addr, interface):
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topo_router = tgen.gears[router]
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step("Verify neighbor " + neighbor + " in " + state + " state")
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input_dict = {
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"default": {
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neighbor: [
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{
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"nbrState": state,
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"ifaceAddress": intf_addr,
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"ifaceName": interface,
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}
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],
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}
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}
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test_func = partial(
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topotest.router_json_cmp,
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topo_router,
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"show ip ospf neighbor " + neighbor + " json",
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input_dict,
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)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
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assertmsg = "P2MP Neighbor " + neighbor + " not in " + state
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assert result is None, assertmsg
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def verify_p2mp_neighbor_missing(tgen, router, neighbor):
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topo_router = tgen.gears[router]
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step("Verify neighbor " + neighbor + " missing")
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input_dict = {"default": {}}
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test_func = partial(
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topotest.router_json_cmp,
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topo_router,
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"show ip ospf neighbor " + neighbor + " json",
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input_dict,
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True, # Require exact match for missing neighbor
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)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
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assertmsg = "P2MP Neighbor " + neighbor + " not missing"
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assert result is None, assertmsg
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def verify_p2mp_route(tgen, router, prefix, prefix_len, nexthop, interface):
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topo_router = tgen.gears[router]
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step("Verify router " + router + " p2mp route " + prefix + " installed")
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input_dict = {
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prefix: [
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{
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"prefix": prefix,
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"prefixLen": prefix_len,
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"protocol": "ospf",
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"nexthops": [
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{
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"ip": nexthop,
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"interfaceName": interface,
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}
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],
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}
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]
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}
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test_func = partial(
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topotest.router_json_cmp,
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topo_router,
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"show ip route " + prefix + " json",
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input_dict,
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)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
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assertmsg = prefix + " not installed on router " + router
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assert result is None, assertmsg
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def test_p2mp_broadcast_interface():
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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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step("Verify router r1 interface r1-eth0 p2mp configuration")
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verify_p2mp_interface(tgen, "r1", 3, 3, "N/A")
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step("Verify router r1 p2mp interface r1-eth0 neighbors")
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verify_p2mp_neighbor(
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tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
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)
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verify_p2mp_neighbor(
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tgen, "r1", "3.3.3.3", "Full/DROther", "10.1.0.3", "r1-eth0:10.1.0.1"
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)
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verify_p2mp_neighbor(
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tgen, "r1", "4.4.4.4", "Full/DROther", "10.1.0.4", "r1-eth0:10.1.0.1"
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)
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step("Verify router r1 p2mp routes installed")
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verify_p2mp_route(tgen, "r1", "10.1.2.0/24", 24, "10.1.0.2", "r1-eth0")
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verify_p2mp_route(tgen, "r1", "10.1.3.0/24", 24, "10.1.0.3", "r1-eth0")
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verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.4", "r1-eth0")
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step("Verify router r1 interface r1-eth0 p2mp configuration removal")
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r1 = tgen.gears["r1"]
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r1.vtysh_cmd("conf t\ninterface r1-eth0\nno ip ospf network point-to-multipoint")
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verify_non_p2mp_interface(tgen)
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step("Verify router r1 interface r1-eth0 p2mp configuration application")
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r1.vtysh_cmd("conf t\ninterface r1-eth0\nip ospf network point-to-multipoint")
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verify_p2mp_interface(tgen, "r1", 3, 3, "N/A")
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step("Verify restablishment of r1-eth0 p2mp neighbors")
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verify_p2mp_neighbor(
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tgen, "r1", "2.2.2.2", "Full/DROther", "10.1.0.2", "r1-eth0:10.1.0.1"
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)
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verify_p2mp_neighbor(
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tgen, "r1", "3.3.3.3", "Full/DROther", "10.1.0.3", "r1-eth0:10.1.0.1"
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)
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verify_p2mp_neighbor(
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tgen, "r1", "4.4.4.4", "Full/DROther", "10.1.0.4", "r1-eth0:10.1.0.1"
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)
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step("Verify router r1 p2mp routes reinstalled")
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verify_p2mp_route(tgen, "r1", "10.1.2.0/24", 24, "10.1.0.2", "r1-eth0")
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verify_p2mp_route(tgen, "r1", "10.1.3.0/24", 24, "10.1.0.3", "r1-eth0")
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verify_p2mp_route(tgen, "r1", "10.1.4.0/24", 24, "10.1.0.4", "r1-eth0")
|
||
|
|
|
||
|
|
|
||
|
|
def test_p2mp_broadcast_neighbor_filter():
|
||
|
|
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, "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, "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, "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, "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, "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, "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, "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, "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, "N/A")
|
||
|
|
|
||
|
|
|
||
|
|
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))
|