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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# test_bfd_topo3.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2020 by
# Network Device Education Foundation, Inc. ("NetDEF")
#
"""
test_bfd_topo3.py: Test the FRR BFD daemon multi hop.
"""
import os
import sys
import json
from functools import partial
import pytest
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
def setup_module(mod):
"Sets up the pytest environment"
topodef = {
"s1": ("r1", "r2"),
"s2": ("r2", "r3"),
"s3": ("r3", "r4"),
"s4": ("r4", "r5", "r6"),
}
tgen = Topogen(topodef, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.items():
daemon_file = "{}/{}/bfdd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BFD, daemon_file)
daemon_file = "{}/{}/zebra.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_ZEBRA, daemon_file)
daemon_file = "{}/{}/bgpd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BGP, daemon_file)
daemon_file = "{}/{}/staticd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_STATIC, daemon_file)
# Initialize all routers.
tgen.start_router()
def test_wait_bgp_convergence():
"Wait for BGP to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("waiting for protocols to converge")
def expect_loopback_route(router, iptype, route, proto):
"Wait until route is present on RIB for protocol."
logger.info("waiting route {} in {}".format(route, router))
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show {} route json".format(iptype),
{route: [{"protocol": proto}]},
)
_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
assertmsg = '"{}" OSPF convergence failure'.format(router)
assert result is None, assertmsg
# Wait for R1 <-> R2 convergence.
expect_loopback_route("r1", "ip", "10.254.254.2/32", "bgp")
# Wait for R1 <-> R3 convergence.
expect_loopback_route("r1", "ip", "10.254.254.3/32", "bgp")
# Wait for R1 <-> R4 convergence.
expect_loopback_route("r1", "ip", "10.254.254.4/32", "bgp")
# Wait for R1 <-> R5 convergence.
expect_loopback_route("r1", "ip", "10.254.254.5/32", "bgp")
# Wait for R1 <-> R6 convergence.
expect_loopback_route("r1", "ip", "10.254.254.6/32", "bgp")
# Wait for R2 <-> R1 convergence.
expect_loopback_route("r2", "ip", "10.254.254.1/32", "bgp")
# Wait for R2 <-> R3 convergence.
expect_loopback_route("r2", "ip", "10.254.254.3/32", "bgp")
# Wait for R2 <-> R4 convergence.
expect_loopback_route("r2", "ip", "10.254.254.4/32", "bgp")
# Wait for R2 <-> R5 convergence.
expect_loopback_route("r2", "ip", "10.254.254.5/32", "bgp")
# Wait for R2 <-> R6 convergence.
expect_loopback_route("r2", "ip", "10.254.254.6/32", "bgp")
# Wait for R3 <-> R1 convergence.
expect_loopback_route("r3", "ip", "10.254.254.1/32", "bgp")
# Wait for R3 <-> R2 convergence.
expect_loopback_route("r3", "ip", "10.254.254.2/32", "bgp")
# Wait for R3 <-> R4 convergence.
expect_loopback_route("r3", "ip", "10.254.254.4/32", "bgp")
# Wait for R3 <-> R5 convergence.
expect_loopback_route("r3", "ip", "10.254.254.5/32", "bgp")
# Wait for R3 <-> R6 convergence.
expect_loopback_route("r3", "ip", "10.254.254.6/32", "bgp")
# Wait for R4 <-> R1 convergence.
expect_loopback_route("r4", "ip", "10.254.254.1/32", "bgp")
# Wait for R4 <-> R2 convergence.
expect_loopback_route("r4", "ip", "10.254.254.2/32", "bgp")
# Wait for R4 <-> R3 convergence.
expect_loopback_route("r4", "ip", "10.254.254.3/32", "bgp")
# Wait for R4 <-> R5 convergence.
expect_loopback_route("r4", "ip", "10.254.254.5/32", "static")
# Wait for R4 <-> R6 convergence.
expect_loopback_route("r4", "ip", "10.254.254.6/32", "static")
# Wait for R5 <-> R6 convergence.
expect_loopback_route("r3", "ipv6", "2001:db8:5::/64", "static")
# Wait for R6 <-> R5 convergence.
expect_loopback_route("r6", "ipv6", "2001:db8:1::/64", "static")
def test_wait_bfd_convergence():
"Wait for BFD to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test BFD configurations")
def expect_bfd_configuration(router):
"Load JSON file and compare with 'show bfd peer json'"
logger.info("waiting BFD configuration on router {}".format(router))
bfd_config = json.loads(open("{}/{}/bfd-peers.json".format(CWD, router)).read())
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show bfd peers json",
bfd_config,
)
_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
assertmsg = '"{}" BFD configuration failure'.format(router)
assert result is None, assertmsg
expect_bfd_configuration("r1")
expect_bfd_configuration("r2")
expect_bfd_configuration("r3")
expect_bfd_configuration("r4")
expect_bfd_configuration("r5")
expect_bfd_configuration("r6")
def test_static_route_monitoring():
"Test static route monitoring output."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test BFD static route status")
def expect_static_bfd_output(router, filename):
"Load JSON file and compare with 'show bfd peer json'"
logger.info("waiting BFD configuration on router {}".format(router))
bfd_config = json.loads(
open("{}/{}/{}.json".format(CWD, router, filename)).read()
)
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show bfd static route json",
bfd_config,
)
_, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assertmsg = '"{}" BFD static route status failure'.format(router)
assert result is None, assertmsg
expect_static_bfd_output("r3", "bfd-static")
expect_static_bfd_output("r6", "bfd-static")
logger.info("Setting r4 link down ...")
tgen.gears["r4"].link_enable("r4-eth0", False)
expect_static_bfd_output("r3", "bfd-static-down")
expect_static_bfd_output("r6", "bfd-static-down")
def test_expect_static_rib_removal():
"Test that route got removed from RIB (staticd and bgpd)."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def expect_route_missing(router, iptype, route):
"Wait until route is present on RIB for protocol."
logger.info("waiting route {} to disapear in {}".format(route, router))
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
"show {} route json".format(iptype),
{route: None},
)
rv, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
assertmsg = '"{}" convergence failure'.format(router)
assert result is None, assertmsg
expect_route_missing("r1", "ip", "10.254.254.5/32")
expect_route_missing("r2", "ip", "10.254.254.5/32")
expect_route_missing("r3", "ip", "10.254.254.5/32")
expect_route_missing("r3", "ipv6", "2001:db8:5::/64")
expect_route_missing("r6", "ipv6", "2001:db8:1::/64")
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip("Memory leak test/report is disabled")
tgen.report_memory_leaks()
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
|
