121 lines
3 KiB
Python
121 lines
3 KiB
Python
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#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# bgp_distance_change.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2019 by
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# Donatas Abraitis <donatas.abraitis@gmail.com>
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#
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"""
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bgp_distance_change.py:
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Test if works the following commands:
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router bgp 65031
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address-family ipv4 unicast
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distance bgp 123 123 123
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Changed distance should reflect to RIB after changes.
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"""
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import os
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import sys
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import json
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import pytest
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import functools
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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pytestmark = [pytest.mark.bgpd]
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def build_topo(tgen):
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for routern in range(1, 3):
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tgen.add_router("r{}".format(routern))
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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def setup_module(mod):
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for i, (rname, router) in enumerate(router_list.items(), 1):
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
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)
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tgen.start_router()
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def teardown_module(mod):
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tgen = get_topogen()
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tgen.stop_topology()
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def test_bgp_maximum_prefix_invalid():
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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router = tgen.gears["r1"]
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def _bgp_converge(router):
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output = json.loads(router.vtysh_cmd("show ip bgp neighbor 192.168.255.2 json"))
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expected = {
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"192.168.255.2": {
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"bgpState": "Established",
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"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
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}
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}
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return topotest.json_cmp(output, expected)
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def _bgp_distance_change(router):
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router.vtysh_cmd(
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"""
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configure terminal
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router bgp 65000
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address-family ipv4 unicast
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distance bgp 123 123 123
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"""
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)
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def _bgp_check_distance_change(router):
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output = json.loads(router.vtysh_cmd("show ip route 172.16.255.254/32 json"))
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expected = {"172.16.255.254/32": [{"protocol": "bgp", "distance": 123}]}
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return topotest.json_cmp(output, expected)
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test_func = functools.partial(_bgp_converge, router)
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success, result = topotest.run_and_expect(test_func, None, count=15, wait=0.5)
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assert result is None, 'Failed to see BGP convergence in "{}"'.format(router)
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_bgp_distance_change(router)
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test_func = functools.partial(_bgp_check_distance_change, router)
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success, result = topotest.run_and_expect(test_func, None, count=15, wait=0.5)
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assert result is None, 'Failed to see applied BGP distance in RIB "{}"'.format(
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router
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)
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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