tests/topotests/bgp_default_route_route_map_match2/test_bgp_default-originate_route-map_match2.py

   1 #!/usr/bin/env python
   2 # SPDX-License-Identifier: ISC
   3
   4 # Copyright (c) 2021 by
   5 # Donatas Abraitis <donatas.abraitis@gmail.com>
   6 #
   7
   8 """
   9 Test if default-originate works with conditional match.
  10 If 10.0.0.0/22 is recived from r2, then we announce 0.0.0.0/0
  11 to r2.
  12 """
  13
  14 import os
  15 import sys
  16 import json
  17 import pytest
  18 import functools
  19
  20 CWD = os.path.dirname(os.path.realpath(__file__))
  21 sys.path.append(os.path.join(CWD, "../"))
  22
  23 # pylint: disable=C0413
  24 from lib import topotest
  25 from lib.topogen import Topogen, TopoRouter, get_topogen
  26 from lib.common_config import step
  27
  28 pytestmark = [pytest.mark.bgpd]
  29
  30
  31 def build_topo(tgen):
  32     for routern in range(1, 3):
  33         tgen.add_router("r{}".format(routern))
  34
  35     switch = tgen.add_switch("s1")
  36     switch.add_link(tgen.gears["r1"])
  37     switch.add_link(tgen.gears["r2"])
  38
  39
  40 def setup_module(mod):
  41     tgen = Topogen(build_topo, mod.__name__)
  42     tgen.start_topology()
  43
  44     router_list = tgen.routers()
  45
  46     for i, (rname, router) in enumerate(router_list.items(), 1):
  47         router.load_config(
  48             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  49         )
  50         router.load_config(
  51             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  52         )
  53
  54     tgen.start_router()
  55
  56
  57 def teardown_module(mod):
  58     tgen = get_topogen()
  59     tgen.stop_topology()
  60
  61
  62 def test_bgp_default_originate_route_map():
  63     tgen = get_topogen()
  64
  65     if tgen.routers_have_failure():
  66         pytest.skip(tgen.errors)
  67
  68     router = tgen.gears["r2"]
  69
  70     def _bgp_converge(router):
  71         output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.1 json"))
  72         expected = {
  73             "192.168.255.1": {
  74                 "bgpState": "Established",
  75                 "addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 1}},
  76             }
  77         }
  78         return topotest.json_cmp(output, expected)
  79
  80     def _bgp_default_route_is_valid(router):
  81         output = json.loads(router.vtysh_cmd("show ip bgp 0.0.0.0/0 json"))
  82         expected = {"paths": [{"valid": True}]}
  83         return topotest.json_cmp(output, expected)
  84
  85     step("Converge network")
  86     test_func = functools.partial(_bgp_converge, router)
  87     success, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5)
  88     assert result is None, "Failed to see bgp convergence at r2"
  89
  90     step("Withdraw 10.0.0.0/22 from R2")
  91     router.vtysh_cmd(
  92         "conf t\nrouter bgp\naddress-family ipv4\nno redistribute connected"
  93     )
  94
  95     step("Check if we don't have 0.0.0.0/0 at R2")
  96     test_func = functools.partial(_bgp_default_route_is_valid, router)
  97     success, result = topotest.run_and_expect(test_func, not None, count=30, wait=0.5)
  98     assert result is not None, "0.0.0.0/0 exists at r2"
  99
 100     step("Announce 10.0.0.0/22 from R2")
 101     router.vtysh_cmd("conf t\nrouter bgp\naddress-family ipv4\nredistribute connected")
 102
 103     step("Check if we have 0.0.0.0/0 at R2")
 104     test_func = functools.partial(_bgp_default_route_is_valid, router)
 105     success, result = topotest.run_and_expect(test_func, None, count=30, wait=0.5)
 106     assert result is None, "0.0.0.0/0 does not exist at r2"
 107
 108     step("Withdraw 10.0.0.0/22 from R2 again")
 109     router.vtysh_cmd(
 110         "conf t\nrouter bgp\naddress-family ipv4\nno redistribute connected"
 111     )
 112
 113     step("Check if we don't have 0.0.0.0/0 at R2 again")
 114     test_func = functools.partial(_bgp_default_route_is_valid, router)
 115     success, result = topotest.run_and_expect(test_func, not None, count=30, wait=0.5)
 116     assert result is not None, "0.0.0.0/0 exists at r2"
 117
 118
 119 if __name__ == "__main__":
 120     args = ["-s"] + sys.argv[1:]
 121     sys.exit(pytest.main(args))