1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2022 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
"""
"""
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, 4):
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["r1"])
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_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_local_as_same_remote_as():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_check_local_as_same_remote_as():
output = json.loads(
tgen.gears["r2"].vtysh_cmd("show bgp ipv4 unicast 172.16.255.1/32 json")
)
expected = {
"paths": [
{
"valid": True,
"aspath": {"string": "Local"},
"nexthops": [{"ip": "192.168.1.1", "hostname": "r1"}],
}
]
}
return topotest.json_cmp(output, expected)
step("Check if iBGP works when local-as == remote-as")
test_func = functools.partial(_bgp_check_local_as_same_remote_as)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed to see BGP prefixes on R2"
def test_bgp_peer_group_local_as_same_remote_as():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_check_local_as_same_remote_as():
output = json.loads(
tgen.gears["r3"].vtysh_cmd("show bgp ipv4 unicast 172.16.255.1/32 json")
)
expected = {
"paths": [
{
"valid": True,
"aspath": {"string": "Local"},
"nexthops": [{"ip": "192.168.2.1", "hostname": "r1"}],
}
]
}
return topotest.json_cmp(output, expected)
step("Initial BGP converge")
test_func = functools.partial(_bgp_check_local_as_same_remote_as)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed to see BGP prefixes on R3"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
|
