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1 | #!/usr/bin/env python |
2 | ||
3 | # | |
4 | # test_bgp_as_wide_bgp_identifier.py | |
5 | # Part of NetDEF Topology Tests | |
6 | # | |
7 | # Copyright (c) 2020 by | |
8 | # Donatas Abraitis <donatas.abraitis@gmail.com> | |
9 | # | |
10 | # Permission to use, copy, modify, and/or distribute this software | |
11 | # for any purpose with or without fee is hereby granted, provided | |
12 | # that the above copyright notice and this permission notice appear | |
13 | # in all copies. | |
14 | # | |
15 | # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES | |
16 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
17 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR | |
18 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY | |
19 | # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
20 | # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
21 | # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
22 | # OF THIS SOFTWARE. | |
23 | # | |
24 | ||
25 | """ | |
26 | rfc6286: Autonomous-System-Wide Unique BGP Identifier for BGP-4 | |
27 | Test if 'Bad BGP Identifier' notification is sent only to | |
28 | internal peers (autonomous-system-wide). eBGP peers are not | |
29 | affected and should work. | |
30 | """ | |
31 | ||
32 | import os | |
33 | import sys | |
34 | import json | |
35 | import time | |
36 | import pytest | |
37 | import functools | |
38 | ||
39 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
787e7624 | 40 | sys.path.append(os.path.join(CWD, "../")) |
03eb10e6 DA |
41 | |
42 | # pylint: disable=C0413 | |
43 | from lib import topotest | |
44 | from lib.topogen import Topogen, TopoRouter, get_topogen | |
45 | from lib.topolog import logger | |
46 | from mininet.topo import Topo | |
47 | ||
787e7624 | 48 | |
03eb10e6 DA |
49 | class TemplateTopo(Topo): |
50 | def build(self, *_args, **_opts): | |
51 | tgen = get_topogen(self) | |
52 | ||
53 | for routern in range(1, 4): | |
787e7624 | 54 | tgen.add_router("r{}".format(routern)) |
55 | ||
56 | switch = tgen.add_switch("s1") | |
57 | switch.add_link(tgen.gears["r1"]) | |
58 | switch.add_link(tgen.gears["r2"]) | |
59 | switch.add_link(tgen.gears["r3"]) | |
03eb10e6 | 60 | |
03eb10e6 DA |
61 | |
62 | def setup_module(mod): | |
63 | tgen = Topogen(TemplateTopo, mod.__name__) | |
64 | tgen.start_topology() | |
65 | ||
66 | router_list = tgen.routers() | |
67 | ||
68 | for i, (rname, router) in enumerate(router_list.iteritems(), 1): | |
69 | router.load_config( | |
787e7624 | 70 | TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)) |
03eb10e6 DA |
71 | ) |
72 | router.load_config( | |
787e7624 | 73 | TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname)) |
03eb10e6 DA |
74 | ) |
75 | ||
76 | tgen.start_router() | |
77 | ||
787e7624 | 78 | |
03eb10e6 DA |
79 | def teardown_module(mod): |
80 | tgen = get_topogen() | |
81 | tgen.stop_topology() | |
82 | ||
787e7624 | 83 | |
03eb10e6 DA |
84 | def test_bgp_as_wide_bgp_identifier(): |
85 | tgen = get_topogen() | |
86 | ||
87 | if tgen.routers_have_failure(): | |
88 | pytest.skip(tgen.errors) | |
89 | ||
90 | def _bgp_converge(router): | |
91 | output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")) | |
787e7624 | 92 | expected = {"192.168.255.1": {"bgpState": "Established"}} |
03eb10e6 DA |
93 | return topotest.json_cmp(output, expected) |
94 | ||
95 | def _bgp_failed(router): | |
96 | output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")) | |
97 | expected = { | |
787e7624 | 98 | "192.168.255.1": { |
99 | "lastNotificationReason": "OPEN Message Error/Bad BGP Identifier" | |
03eb10e6 DA |
100 | } |
101 | } | |
102 | return topotest.json_cmp(output, expected) | |
103 | ||
787e7624 | 104 | test_func = functools.partial(_bgp_converge, tgen.gears["r1"]) |
9ccb078d | 105 | success, result = topotest.run_and_expect(test_func, None, count=260, wait=0.5) |
03eb10e6 | 106 | |
787e7624 | 107 | assert result is None, 'Failed to converge: "{}"'.format(tgen.gears["r1"]) |
03eb10e6 | 108 | |
787e7624 | 109 | test_func = functools.partial(_bgp_failed, tgen.gears["r3"]) |
9ccb078d | 110 | success, result = topotest.run_and_expect(test_func, None, count=260, wait=0.5) |
03eb10e6 | 111 | |
787e7624 | 112 | assert result is None, 'Bad BGP Identifier notification not sent: "{}"'.format( |
113 | tgen.gears["r3"] | |
114 | ) | |
115 | ||
03eb10e6 | 116 | |
787e7624 | 117 | if __name__ == "__main__": |
03eb10e6 DA |
118 | args = ["-s"] + sys.argv[1:] |
119 | sys.exit(pytest.main(args)) |