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Diffstat (limited to '')
| -rw-r--r-- | tests/topotests/bgp_maximum_prefix_out/test_bgp_maximum_prefix_out.py | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/tests/topotests/bgp_maximum_prefix_out/test_bgp_maximum_prefix_out.py b/tests/topotests/bgp_maximum_prefix_out/test_bgp_maximum_prefix_out.py new file mode 100644 index 0000000..696d6d9 --- /dev/null +++ b/tests/topotests/bgp_maximum_prefix_out/test_bgp_maximum_prefix_out.py @@ -0,0 +1,200 @@ +#!/usr/bin/env python + +# +# test_bgp_maximum_prefix_out.py +# Part of NetDEF Topology Tests +# +# Copyright (c) 2020 by +# Donatas Abraitis <donatas.abraitis@gmail.com> +# +# 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. +# + +""" +Test if `neighbor <X.X.X.X> maximum-prefix-out <Y>` is working +correctly. +""" + +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 + +pytestmark = [pytest.mark.bgpd] + + +def build_topo(tgen): + for routern in range(1, 3): + tgen.add_router("r{}".format(routern)) + + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + +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_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_maximum_prefix_out(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + router1 = tgen.gears["r1"] + router2 = tgen.gears["r2"] + + # format (router to configure, command, expected received prefixes on r2) + tests = [ + # test of the initial config + (None, 2), + # modifying the max-prefix-out value + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 4", + 4, + ), + # removing the max-prefix-out value + ( + "router bgp\n address-family ipv4\n no neighbor 192.168.255.1 maximum-prefix-out", + 6, + ), + # setting a max-prefix-out value + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 3", + 3, + ), + # setting a max-prefix-out value - higher than the total number of prefix + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 8", + 6, + ), + # adding a new prefix + ("router bgp\n int lo\n ip address 172.16.255.249/32", 7), + # setting a max-prefix-out value - lower than the total number of prefix + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 1", + 1, + ), + # adding a new prefix + ("router bgp\n int lo\n ip address 172.16.255.248/32", 1), + # removing the max-prefix-out value + ( + "router bgp\n address-family ipv4\n no neighbor 192.168.255.1 maximum-prefix-out 1", + 8, + ), + # test setting the existing neighbor into a peer-group with a max-prefix-out value + ( + """ + router bgp + neighbor test peer-group + neighbor test remote-as 65002 + neighbor test timers 3 10 + address-family ipv4 + neighbor test maximum-prefix-out 3 + ! + neighbor 192.168.255.1 peer-group test + """, + 3, + ), + # max-prefix-out value of the neighbor must take the precedence + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 4", + 4, + ), + ( + "router bgp\n address-family ipv4\n no neighbor 192.168.255.1 maximum-prefix-out", + 3, + ), + ( + """ + router bgp + no neighbor 192.168.255.1 peer-group test + neighbor 192.168.255.1 remote-as 65002 + neighbor 192.168.255.1 timers 3 10 + """, + 8, + ), + ( + "router bgp\n address-family ipv4\n neighbor 192.168.255.1 maximum-prefix-out 5", + 5, + ), + # test setting the existing neighbor with a max-pref-out value into a peer-group with a max-pref-out value + ("router bgp\n neighbor 192.168.255.1 peer-group test", 5), + ( + "router bgp\n address-family ipv4\n no neighbor 192.168.255.1 maximum-prefix-out 5", + 3, + ), + ] + + def _bgp_converge(router, nb_prefixes): + output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.2 json")) + expected = { + "192.168.255.2": { + "bgpState": "Established", + "addressFamilyInfo": { + "ipv4Unicast": {"acceptedPrefixCounter": nb_prefixes} + }, + } + } + return topotest.json_cmp(output, expected) + + for test in tests: + cfg, exp_prfxs = test + if cfg: + cmd = ( + """ + configure terminal + %s + """ + % cfg + ) + router1.vtysh_cmd(cmd) + + test_func = functools.partial(_bgp_converge, router2, exp_prfxs) + success, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5) + + assert result is None, 'Failed bgp convergence in "{}"'.format(router2) + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |