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git.proxmox.com Git - mirror_frr.git/blob - tests/topotests/bgp_ebgp_requires_policy/test_bgp_ebgp_requires_policy.py
4 # bgp_ebgp_requires_policy.py
5 # Part of NetDEF Topology Tests
7 # Copyright (c) 2019 by
8 # Donatas Abraitis <donatas.abraitis@gmail.com>
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
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
26 bgp_ebgp_requires_policy.py:
28 Test if eBGP sender without a filter applied to the peer is allowed
29 to send advertisements.
32 r1 has a filter applied for outgoing direction,
33 r2 receives 192.168.255.1/32.
36 r3 hasn't a filter appied for outgoing direction,
37 r4 does not receive 192.168.255.1/32.
40 r5 and r6 establish iBGP session which in turn should ignore
41 RFC8212. All routes for both directions MUST work.
51 CWD
= os
.path
.dirname(os
.path
.realpath(__file__
))
52 sys
.path
.append(os
.path
.join(CWD
, "../"))
54 # pylint: disable=C0413
55 from lib
import topotest
56 from lib
.topogen
import Topogen
, TopoRouter
, get_topogen
57 from lib
.topolog
import logger
58 from mininet
.topo
import Topo
60 pytestmark
= [pytest
.mark
.bgpd
]
63 class TemplateTopo(Topo
):
64 def build(self
, *_args
, **_opts
):
65 tgen
= get_topogen(self
)
67 for routern
in range(1, 7):
68 tgen
.add_router("r{}".format(routern
))
71 switch
= tgen
.add_switch("s1")
72 switch
.add_link(tgen
.gears
["r1"])
73 switch
.add_link(tgen
.gears
["r2"])
76 switch
= tgen
.add_switch("s2")
77 switch
.add_link(tgen
.gears
["r3"])
78 switch
.add_link(tgen
.gears
["r4"])
81 switch
= tgen
.add_switch("s3")
82 switch
.add_link(tgen
.gears
["r5"])
83 switch
.add_link(tgen
.gears
["r6"])
86 def setup_module(mod
):
87 tgen
= Topogen(TemplateTopo
, mod
.__name
__)
90 router_list
= tgen
.routers()
92 for i
, (rname
, router
) in enumerate(router_list
.items(), 1):
94 TopoRouter
.RD_ZEBRA
, os
.path
.join(CWD
, "{}/zebra.conf".format(rname
))
97 TopoRouter
.RD_BGP
, os
.path
.join(CWD
, "{}/bgpd.conf".format(rname
))
103 def teardown_module(mod
):
108 def test_ebgp_requires_policy():
111 if tgen
.routers_have_failure():
112 pytest
.skip(tgen
.errors
)
114 def _bgp_converge(router
):
116 tgen
.gears
[router
].vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")
118 expected
= {"192.168.255.1": {"bgpState": "Established"}}
119 return topotest
.json_cmp(output
, expected
)
121 def _bgp_has_routes(router
):
123 tgen
.gears
[router
].vtysh_cmd(
124 "show ip bgp neighbor 192.168.255.1 routes json"
127 expected
= {"routes": {"172.16.255.254/32": [{"valid": True}]}}
128 return topotest
.json_cmp(output
, expected
)
130 def _bgp_advertised_routes(router
):
132 tgen
.gears
[router
].vtysh_cmd(
133 "show ip bgp neighbor 192.168.255.2 advertised-routes json"
137 "advertisedRoutes": {},
138 "totalPrefixCounter": 0,
139 "filteredPrefixCounter": 0,
141 return topotest
.json_cmp(output
, expected
)
144 logger
.info("Scenario 1: r2 receives 192.168.255.1/32 from r1")
145 test_func
= functools
.partial(_bgp_converge
, "r2")
146 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
147 assert success
is True, "Failed bgp convergence (r2)"
149 test_func
= functools
.partial(_bgp_has_routes
, "r2")
150 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
151 assert success
is True, "r2 does not receive 192.168.255.1/32"
154 logger
.info("Scenario 2: r3 must not send 192.168.255.1/32 to r4")
155 test_func
= functools
.partial(_bgp_converge
, "r4")
156 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
157 assert success
is True, "Failed bgp convergence (r4)"
159 test_func
= functools
.partial(_bgp_advertised_routes
, "r3")
160 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
161 assert success
is True, "r3 announced 192.168.255.1/32 to r4"
164 logger
.info("Scenario 3: r6 receives 192.168.255.1/32 from r5 (iBGP)")
165 test_func
= functools
.partial(_bgp_converge
, "r6")
166 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
167 assert success
is True, "Failed bgp convergence (r6)"
169 test_func
= functools
.partial(_bgp_has_routes
, "r6")
170 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
171 assert success
is True, "r6 does not receive 192.168.255.1/32"
174 if __name__
== "__main__":
175 args
= ["-s"] + sys
.argv
[1:]
176 sys
.exit(pytest
.main(args
))