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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
61 class TemplateTopo(Topo
):
62 def build(self
, *_args
, **_opts
):
63 tgen
= get_topogen(self
)
65 for routern
in range(1, 7):
66 tgen
.add_router("r{}".format(routern
))
69 switch
= tgen
.add_switch("s1")
70 switch
.add_link(tgen
.gears
["r1"])
71 switch
.add_link(tgen
.gears
["r2"])
74 switch
= tgen
.add_switch("s2")
75 switch
.add_link(tgen
.gears
["r3"])
76 switch
.add_link(tgen
.gears
["r4"])
79 switch
= tgen
.add_switch("s3")
80 switch
.add_link(tgen
.gears
["r5"])
81 switch
.add_link(tgen
.gears
["r6"])
84 def setup_module(mod
):
85 tgen
= Topogen(TemplateTopo
, mod
.__name
__)
88 router_list
= tgen
.routers()
90 for i
, (rname
, router
) in enumerate(router_list
.items(), 1):
92 TopoRouter
.RD_ZEBRA
, os
.path
.join(CWD
, "{}/zebra.conf".format(rname
))
95 TopoRouter
.RD_BGP
, os
.path
.join(CWD
, "{}/bgpd.conf".format(rname
))
101 def teardown_module(mod
):
106 def test_ebgp_requires_policy():
109 if tgen
.routers_have_failure():
110 pytest
.skip(tgen
.errors
)
112 def _bgp_converge(router
):
114 tgen
.gears
[router
].vtysh_cmd("show ip bgp neighbor 192.168.255.1 json")
116 expected
= {"192.168.255.1": {"bgpState": "Established"}}
117 return topotest
.json_cmp(output
, expected
)
119 def _bgp_has_routes(router
):
121 tgen
.gears
[router
].vtysh_cmd(
122 "show ip bgp neighbor 192.168.255.1 routes json"
125 expected
= {"routes": {"172.16.255.254/32": [{"valid": True}]}}
126 return topotest
.json_cmp(output
, expected
)
128 def _bgp_advertised_routes(router
):
130 tgen
.gears
[router
].vtysh_cmd(
131 "show ip bgp neighbor 192.168.255.2 advertised-routes json"
135 "advertisedRoutes": {},
136 "totalPrefixCounter": 0,
137 "filteredPrefixCounter": 0,
139 return topotest
.json_cmp(output
, expected
)
142 logger
.info("Scenario 1: r2 receives 192.168.255.1/32 from r1")
143 test_func
= functools
.partial(_bgp_converge
, "r2")
144 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
145 assert success
is True, "Failed bgp convergence (r2)"
147 test_func
= functools
.partial(_bgp_has_routes
, "r2")
148 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
149 assert success
is True, "r2 does not receive 192.168.255.1/32"
152 logger
.info("Scenario 2: r3 must not send 192.168.255.1/32 to r4")
153 test_func
= functools
.partial(_bgp_converge
, "r4")
154 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
155 assert success
is True, "Failed bgp convergence (r4)"
157 test_func
= functools
.partial(_bgp_advertised_routes
, "r3")
158 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
159 assert success
is True, "r3 announced 192.168.255.1/32 to r4"
162 logger
.info("Scenario 3: r6 receives 192.168.255.1/32 from r5 (iBGP)")
163 test_func
= functools
.partial(_bgp_converge
, "r6")
164 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
165 assert success
is True, "Failed bgp convergence (r6)"
167 test_func
= functools
.partial(_bgp_has_routes
, "r6")
168 success
, result
= topotest
.run_and_expect(test_func
, None, count
=120, wait
=0.5)
169 assert success
is True, "r6 does not receive 192.168.255.1/32"
172 if __name__
== "__main__":
173 args
= ["-s"] + sys
.argv
[1:]
174 sys
.exit(pytest
.main(args
))