tests/topotests/bgp_default_afi_safi/test_bgp-default-afi-safi.py

   1 #!/usr/bin/env python
   2 # SPDX-License-Identifier: ISC
   3
   4 #
   5 # Copyright (c) 2021 by
   6 # Donatas Abraitis <donatas.abraitis@gmail.com>
   7 #
   8
   9 """
  10 Test if `bgp default ipv4-unicast`, `bgp default ipv6-unicast`
  11 and `bgp default l2vpn-evpn` commands work as expected.
  12
  13 STEP 1: 'Check if neighbor 192.168.255.254 is enabled for ipv4 address-family only'
  14 STEP 2: 'Check if neighbor 192.168.255.254 is enabled for ipv6 address-family only'
  15 STEP 3: 'Check if neighbor 192.168.255.254 is enabled for l2vpn evpn address-family only'
  16 STEP 4: 'Check if neighbor 192.168.255.254 is enabled for ipv4/ipv6 unicast and l2vpn evpn address-families'
  17 """
  18
  19 import os
  20 import sys
  21 import json
  22 import pytest
  23
  24 pytestmark = [pytest.mark.bgpd]
  25
  26 CWD = os.path.dirname(os.path.realpath(__file__))
  27 sys.path.append(os.path.join(CWD, "../"))
  28
  29 # pylint: disable=C0413
  30 from lib.topogen import Topogen, TopoRouter, get_topogen
  31 from lib.common_config import step
  32
  33 pytestmark = [pytest.mark.bgpd]
  34
  35
  36 def build_topo(tgen):
  37     for routern in range(1, 5):
  38         tgen.add_router("r{}".format(routern))
  39
  40     switch = tgen.add_switch("s1")
  41     switch.add_link(tgen.gears["r1"])
  42     switch.add_link(tgen.gears["r2"])
  43     switch.add_link(tgen.gears["r3"])
  44     switch.add_link(tgen.gears["r4"])
  45
  46
  47 def setup_module(mod):
  48     tgen = Topogen(build_topo, mod.__name__)
  49     tgen.start_topology()
  50
  51     router_list = tgen.routers()
  52
  53     for i, (rname, router) in enumerate(router_list.items(), 1):
  54         router.load_config(
  55             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  56         )
  57         router.load_config(
  58             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  59         )
  60
  61     tgen.start_router()
  62
  63
  64 def teardown_module(mod):
  65     tgen = get_topogen()
  66     tgen.stop_topology()
  67
  68
  69 def test_bgp_default_ipv4_ipv6_unicast():
  70     tgen = get_topogen()
  71
  72     if tgen.routers_have_failure():
  73         pytest.skip(tgen.errors)
  74
  75     step("Check if neighbor 192.168.255.254 is enabled for ipv4 address-family only")
  76
  77     def _bgp_neighbor_ipv4_af_only():
  78         tgen.gears["r1"].vtysh_cmd(
  79             "conf t\nrouter bgp\nneighbor 192.168.255.254 remote-as external"
  80         )
  81
  82         output = json.loads(tgen.gears["r1"].vtysh_cmd("show bgp summary json"))
  83
  84         if len(output.keys()) == 1 and "ipv4Unicast" in output:
  85             return True
  86         return False
  87
  88     assert _bgp_neighbor_ipv4_af_only() == True
  89
  90     step("Check if neighbor 192.168.255.254 is enabled for ipv6 address-family only")
  91
  92     def _bgp_neighbor_ipv6_af_only():
  93         tgen.gears["r2"].vtysh_cmd(
  94             "conf t\nrouter bgp\nneighbor 192.168.255.254 remote-as external"
  95         )
  96
  97         output = json.loads(tgen.gears["r2"].vtysh_cmd("show bgp summary json"))
  98
  99         if len(output.keys()) == 1 and "ipv6Unicast" in output:
 100             return True
 101         return False
 102
 103     assert _bgp_neighbor_ipv6_af_only() == True
 104
 105     step("Check if neighbor 192.168.255.254 is enabled for evpn address-family only")
 106
 107     def _bgp_neighbor_evpn_af_only():
 108         tgen.gears["r3"].vtysh_cmd(
 109             "conf t\nrouter bgp\nneighbor 192.168.255.254 remote-as external"
 110         )
 111
 112         output = json.loads(tgen.gears["r3"].vtysh_cmd("show bgp summary json"))
 113
 114         if len(output.keys()) == 1 and "l2VpnEvpn" in output:
 115             return True
 116         return False
 117
 118     assert _bgp_neighbor_evpn_af_only() == True
 119
 120     step(
 121         "Check if neighbor 192.168.255.254 is enabled for ipv4/ipv6 unicast and evpn address-families"
 122     )
 123
 124     def _bgp_neighbor_ipv4_ipv6_and_evpn_af():
 125         tgen.gears["r4"].vtysh_cmd(
 126             "conf t\nrouter bgp\nneighbor 192.168.255.254 remote-as external"
 127         )
 128
 129         output = json.loads(tgen.gears["r4"].vtysh_cmd("show bgp summary json"))
 130
 131         if (
 132             len(output.keys()) == 3
 133             and "ipv4Unicast" in output
 134             and "ipv6Unicast" in output
 135             and "l2VpnEvpn" in output
 136         ):
 137             return True
 138         return False
 139
 140     assert _bgp_neighbor_ipv4_ipv6_and_evpn_af() == True
 141
 142
 143 if __name__ == "__main__":
 144     args = ["-s"] + sys.argv[1:]
 145     sys.exit(pytest.main(args))