diff options
Diffstat (limited to 'tests/topotests/bgp_conditional_advertisement_track_peer')
9 files changed, 236 insertions, 0 deletions
diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/__init__.py b/tests/topotests/bgp_conditional_advertisement_track_peer/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/__init__.py diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r1/bgpd.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r1/bgpd.conf new file mode 100644 index 0000000..1e98f4e --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r1/bgpd.conf @@ -0,0 +1,17 @@ +! +router bgp 65001 + no bgp ebgp-requires-policy + neighbor 192.168.1.2 remote-as external + neighbor 192.168.1.2 timers 3 10 + address-family ipv4 unicast + neighbor 192.168.1.2 route-map r2 in + exit-address-family +! +ip prefix-list p1 seq 5 permit 172.16.255.31/32 +! +route-map r2 permit 10 + match ip address prefix-list p1 + set as-path replace 65003 +route-map r2 permit 20 + set as-path replace any +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r1/zebra.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r1/zebra.conf new file mode 100644 index 0000000..acf120b --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r1/zebra.conf @@ -0,0 +1,6 @@ +! +interface r1-eth0 + ip address 192.168.1.1/24 +! +ip forwarding +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r2/bgpd.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/bgpd.conf new file mode 100644 index 0000000..66c3dc5 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/bgpd.conf @@ -0,0 +1,28 @@ +! +router bgp 65002 + no bgp ebgp-requires-policy + bgp conditional-advertisement timer 5 + neighbor 192.168.1.1 remote-as external + neighbor 192.168.1.1 timers 3 10 + neighbor 192.168.2.1 remote-as external + neighbor 192.168.2.1 timers 3 10 + address-family ipv4 unicast + redistribute static + neighbor 192.168.1.1 advertise-map advertise exist-map exist + neighbor 192.168.1.1 route-map deny-all out + neighbor 192.168.2.1 route-map exist in + exit-address-family +! +ip prefix-list exist seq 5 permit 172.16.255.3/32 +ip prefix-list advertise seq 5 permit 172.16.255.2/32 +! +route-map advertise permit 10 + match ip address prefix-list advertise +exit +! +route-map exist permit 10 + match ip address prefix-list exist +exit +! +route-map deny-all deny 10 +exit diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r2/staticd.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/staticd.conf new file mode 100644 index 0000000..6c013e2 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/staticd.conf @@ -0,0 +1,3 @@ +! +ip route 172.16.255.2/32 r2-eth1 +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r2/zebra.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/zebra.conf new file mode 100644 index 0000000..f229954 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r2/zebra.conf @@ -0,0 +1,9 @@ +! +interface r2-eth0 + ip address 192.168.1.2/24 +! +interface r2-eth1 + ip address 192.168.2.2/24 +! +ip forwarding +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r3/bgpd.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r3/bgpd.conf new file mode 100644 index 0000000..5058d40 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r3/bgpd.conf @@ -0,0 +1,10 @@ +! +router bgp 65003 + no bgp ebgp-requires-policy + neighbor 192.168.2.2 remote-as external + neighbor 192.168.2.2 timers 3 10 + neighbor 192.168.2.2 shutdown + address-family ipv4 unicast + redistribute connected + exit-address-family +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/r3/zebra.conf b/tests/topotests/bgp_conditional_advertisement_track_peer/r3/zebra.conf new file mode 100644 index 0000000..268163e --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/r3/zebra.conf @@ -0,0 +1,9 @@ +! +int lo + ip address 172.16.255.3/32 +! +interface r3-eth0 + ip address 192.168.2.1/24 +! +ip forwarding +! diff --git a/tests/topotests/bgp_conditional_advertisement_track_peer/test_bgp_conditional_advertisement_track_peer.py b/tests/topotests/bgp_conditional_advertisement_track_peer/test_bgp_conditional_advertisement_track_peer.py new file mode 100644 index 0000000..591bac1 --- /dev/null +++ b/tests/topotests/bgp_conditional_advertisement_track_peer/test_bgp_conditional_advertisement_track_peer.py @@ -0,0 +1,154 @@ +#!/usr/bin/env python + +# +# Copyright (c) 2022 by +# Donatas Abraitis <donatas@opensourcerouting.org> +# +# Permission to use, copy, modify, and/or distribute this software +# for any purpose with or without fee is hereby granted, provided +# that the above copyright notice and this permission notice appear +# in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY +# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS +# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +# OF THIS SOFTWARE. +# + +""" +Conditionally advertise 172.16.255.2/32 to r1, only if 172.16.255.3/32 +is received from r3. + +Also, withdraw if 172.16.255.3/32 disappears. +""" + +import os +import sys +import json +import pytest +import functools + +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) + +# pylint: disable=C0413 +from lib import topotest +from lib.topogen import Topogen, TopoRouter, get_topogen +from lib.common_config import ( + step, +) + +pytestmark = [pytest.mark.bgpd] + + +def build_topo(tgen): + for routern in range(1, 5): + tgen.add_router("r{}".format(routern)) + + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + switch = tgen.add_switch("s2") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r3"]) + + +def setup_module(mod): + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + + for i, (rname, router) in enumerate(router_list.items(), 1): + router.load_config( + TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)) + ) + router.load_config( + TopoRouter.RD_STATIC, os.path.join(CWD, "{}/staticd.conf".format(rname)) + ) + router.load_config( + TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname)) + ) + + tgen.start_router() + + +def teardown_module(mod): + tgen = get_topogen() + tgen.stop_topology() + + +def test_bgp_conditional_advertisement_track_peer(): + tgen = get_topogen() + + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + r3 = tgen.gears["r3"] + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + def _bgp_converge(): + output = json.loads( + r2.vtysh_cmd( + "show bgp ipv4 unicast neighbors 192.168.1.1 advertised-routes json" + ) + ) + expected = { + "advertisedRoutes": {"172.16.255.2/32": None}, + "totalPrefixCounter": 0, + "filteredPrefixCounter": 0, + } + return topotest.json_cmp(output, expected) + + # Verify if R2 does not send any routes to R1 + test_func = functools.partial(_bgp_converge) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5) + assert result is None, "R2 SHOULD not send any routes to R1" + + step("Enable session between R2 and R3") + r3.vtysh_cmd( + """ + configure terminal + router bgp + no neighbor 192.168.2.2 shutdown + """ + ) + + def _bgp_check_conditional_static_routes_from_r2(): + output = json.loads(r1.vtysh_cmd("show bgp ipv4 unicast json")) + expected = { + "routes": { + "172.16.255.2/32": [{"valid": True, "nexthops": [{"hostname": "r2"}]}] + } + } + return topotest.json_cmp(output, expected) + + # Verify if R1 received 172.16.255.2/32 from R2 + test_func = functools.partial(_bgp_check_conditional_static_routes_from_r2) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5) + assert result is None, "R1 SHOULD receive 172.16.255.2/32 from R2" + + step("Disable session between R2 and R3 again") + r3.vtysh_cmd( + """ + configure terminal + router bgp + neighbor 192.168.2.2 shutdown + """ + ) + + # Verify if R2 is not sending any routes to R1 again + test_func = functools.partial(_bgp_converge) + _, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5) + assert result is None, "R2 SHOULD not send any routes to R1" + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |