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topotests: test aggregate-address matching-MED-only
Add a new topology test for `aggregate-address` to test `matching-MED-only` and its combination with `summary-only`. Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
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53
tests/topotests/bgp_aggregate_address_topo1/exabgp.env
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53
tests/topotests/bgp_aggregate_address_topo1/exabgp.env
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[exabgp.api]
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encoder = text
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highres = false
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respawn = false
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socket = ''
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[exabgp.bgp]
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openwait = 60
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[exabgp.cache]
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attributes = true
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nexthops = true
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[exabgp.daemon]
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daemonize = true
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pid = '/var/run/exabgp/exabgp.pid'
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user = 'exabgp'
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##daemonize = false
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[exabgp.log]
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all = false
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configuration = true
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daemon = true
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destination = '/var/log/exabgp.log'
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enable = true
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level = INFO
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message = false
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network = true
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packets = false
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parser = false
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processes = true
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reactor = true
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rib = false
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routes = false
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short = false
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timers = false
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[exabgp.pdb]
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enable = false
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[exabgp.profile]
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enable = false
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file = ''
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[exabgp.reactor]
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speed = 1.0
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[exabgp.tcp]
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acl = false
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bind = ''
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delay = 0
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once = false
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port = 179
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17
tests/topotests/bgp_aggregate_address_topo1/peer1/exabgp.cfg
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17
tests/topotests/bgp_aggregate_address_topo1/peer1/exabgp.cfg
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neighbor 10.0.0.1 {
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router-id 10.254.254.3;
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local-address 10.0.0.2;
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local-as 65001;
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peer-as 65000;
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static {
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route 10.254.254.3/32 next-hop 10.0.0.2;
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route 192.168.0.1/32 next-hop 10.0.0.2 med 10;
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route 192.168.0.2/32 next-hop 10.0.0.2 med 10;
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route 192.168.0.3/32 next-hop 10.0.0.2 med 10;
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route 192.168.1.1/32 next-hop 10.0.0.2 med 10;
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route 192.168.1.2/32 next-hop 10.0.0.2 med 10;
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route 192.168.1.3/32 next-hop 10.0.0.2 med 20;
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}
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}
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12
tests/topotests/bgp_aggregate_address_topo1/r1/bgpd.conf
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12
tests/topotests/bgp_aggregate_address_topo1/r1/bgpd.conf
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router bgp 65000
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no bgp ebgp-requires-policy
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neighbor 10.0.0.2 remote-as 65001
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neighbor 10.0.0.2 timers 3 10
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neighbor 10.0.1.2 remote-as internal
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neighbor 10.0.1.2 timers 3 10
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address-family ipv4 unicast
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redistribute connected
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aggregate-address 192.168.0.0/24 matching-MED-only
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aggregate-address 192.168.1.0/24 matching-MED-only
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exit-address-family
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!
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13
tests/topotests/bgp_aggregate_address_topo1/r1/zebra.conf
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13
tests/topotests/bgp_aggregate_address_topo1/r1/zebra.conf
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!
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interface lo
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ip address 10.254.254.1/32
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!
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interface r1-eth0
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ip address 10.0.0.1/24
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!
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interface r1-eth1
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ip address 10.0.1.1/24
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!
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ip forwarding
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ipv6 forwarding
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!
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7
tests/topotests/bgp_aggregate_address_topo1/r2/bgpd.conf
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7
tests/topotests/bgp_aggregate_address_topo1/r2/bgpd.conf
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router bgp 65000
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neighbor 10.0.1.1 remote-as internal
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neighbor 10.0.1.1 timers 3 10
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address-family ipv4 unicast
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redistribute connected
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exit-address-family
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!
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10
tests/topotests/bgp_aggregate_address_topo1/r2/zebra.conf
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10
tests/topotests/bgp_aggregate_address_topo1/r2/zebra.conf
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!
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interface lo
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ip address 10.254.254.2/32
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!
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interface r2-eth0
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ip address 10.0.1.2/24
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!
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ip forwarding
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ipv6 forwarding
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!
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#!/usr/bin/env python
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#
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# test_bgp_aggregate_address_topo1.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2020 by
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# Network Device Education Foundation, Inc. ("NetDEF")
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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# OF THIS SOFTWARE.
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#
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"""
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Test BGP aggregate address features.
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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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import time
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import pytest
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import functools
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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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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 mininet.topo import Topo
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class BgpAggregateAddressTopo1(Topo):
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def build(self, *_args, **_opts):
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tgen = get_topogen(self)
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r1 = tgen.add_router('r1')
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r2 = tgen.add_router('r2')
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peer1 = tgen.add_exabgp_peer('peer1', ip='10.0.0.2',
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defaultRoute='via 10.0.0.1')
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switch = tgen.add_switch('s1')
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switch.add_link(r1)
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switch.add_link(peer1)
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switch = tgen.add_switch('s2')
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switch.add_link(r1)
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switch.add_link(r2)
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def setup_module(mod):
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tgen = Topogen(BgpAggregateAddressTopo1, mod.__name__)
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tgen.start_topology()
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router = tgen.gears['r1']
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router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "r1/zebra.conf"))
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router.load_config(TopoRouter.RD_BGP, os.path.join(CWD, "r1/bgpd.conf"))
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router.start()
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router = tgen.gears['r2']
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router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "r2/zebra.conf"))
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router.load_config(TopoRouter.RD_BGP, os.path.join(CWD, "r2/bgpd.conf"))
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router.start()
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peer = tgen.gears['peer1']
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peer.start(os.path.join(CWD, "peer1"), os.path.join(CWD, "exabgp.env"))
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def teardown_module(mod):
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tgen = get_topogen()
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tgen.stop_topology()
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def test_expect_convergence():
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"Test that BGP protocol converged."
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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_loopback_route(router, iptype, route, proto):
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"Wait until route is present on RIB for protocol."
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logger.info('waiting route {} in {}'.format(route, router))
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test_func = functools.partial(
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topotest.router_json_cmp,
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tgen.gears[router],
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'show {} route json'.format(iptype),
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{ route: [{ 'protocol': proto }] }
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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 = '"{}" BGP convergence failure'.format(router)
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assert result is None, assertmsg
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expect_loopback_route('r2', 'ip', '10.254.254.1/32', 'bgp')
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expect_loopback_route('r2', 'ip', '10.254.254.3/32', 'bgp')
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def test_bgp_aggregate_address_matching_med_only():
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"Test that the command matching-MED-only works."
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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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routes_expected = {
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# All MED matches, aggregation must exist.
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"192.168.0.0/24": [{"protocol": "bgp", "metric": 0}],
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"192.168.0.1/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.0.2/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.0.3/32": [{"protocol": "bgp", "metric": 10}],
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# Non matching MED: aggregation must not exist.
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"192.168.1.0/24": None,
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"192.168.1.1/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.1.2/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.1.3/32": [{"protocol": "bgp", "metric": 20}]
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}
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test_func = functools.partial(
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topotest.router_json_cmp,
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tgen.gears['r2'],
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'show ip route json',
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routes_expected
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)
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_, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
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assertmsg = '"r2" BGP convergence failure'
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assert result is None, assertmsg
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def test_bgp_aggregate_address_match_and_supress():
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"Test that the command matching-MED-only with suppression works."
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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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tgen.gears['r1'].vtysh_multicmd("""
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configure terminal
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router bgp 65000
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address-family ipv4 unicast
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no aggregate-address 192.168.0.0/24 matching-MED-only
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no aggregate-address 192.168.1.0/24 matching-MED-only
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aggregate-address 192.168.0.0/24 matching-MED-only summary-only
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aggregate-address 192.168.1.0/24 matching-MED-only summary-only
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""")
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routes_expected = {
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# All MED matches, aggregation must exist.
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"192.168.0.0/24": [{"protocol": "bgp", "metric": 0}],
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"192.168.0.1/32": None,
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"192.168.0.2/32": None,
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"192.168.0.3/32": None,
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# Non matching MED: aggregation must not exist.
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"192.168.1.0/24": None,
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"192.168.1.1/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.1.2/32": [{"protocol": "bgp", "metric": 10}],
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"192.168.1.3/32": [{"protocol": "bgp", "metric": 20}]
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}
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test_func = functools.partial(
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topotest.router_json_cmp,
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tgen.gears['r2'],
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'show ip route json',
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routes_expected
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)
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_, result = topotest.run_and_expect(test_func, None, count=120, wait=1)
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assertmsg = '"r2" BGP convergence failure'
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assert result is None, assertmsg
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def test_memory_leak():
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"Run the memory leak test and report results."
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tgen = get_topogen()
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if not tgen.is_memleak_enabled():
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pytest.skip("Memory leak test/report is disabled")
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tgen.report_memory_leaks()
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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