144 lines
4.1 KiB
Python
144 lines
4.1 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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# Copyright (c) 2022 by
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# Donatas Abraitis <donatas@opensourcerouting.org>
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#
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"""
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Test if BGP ORF filtering is working correctly when modifying
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prefix-list.
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Initially advertise 10.10.10.1/32 from R1 to R2. Add new prefix
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10.10.10.2/32 to r1 prefix list on R2. Test if we updated ORF
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prefix-list correctly.
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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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pytestmark = [pytest.mark.bgpd]
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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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def setup_module(mod):
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topodef = {"s1": ("r1", "r2")}
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tgen = Topogen(topodef, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for _, (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_orf():
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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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r1 = tgen.gears["r1"]
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r2 = tgen.gears["r2"]
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def _bgp_converge_r1():
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output = json.loads(
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r1.vtysh_cmd(
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"show bgp ipv4 unicast neighbor 192.168.1.2 advertised-routes json"
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)
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)
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expected = {"advertisedRoutes": {"10.10.10.1/32": {}, "10.10.10.2/32": None}}
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return topotest.json_cmp(output, expected)
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test_func = functools.partial(_bgp_converge_r1)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "Can't apply ORF from R1 to R2"
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def _bgp_converge_r2():
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output = json.loads(r2.vtysh_cmd("show bgp ipv4 unicast summary json"))
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expected = {
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"peers": {
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"192.168.1.1": {
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"pfxRcd": 1,
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"pfxSnt": 1,
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"state": "Established",
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"peerState": "OK",
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}
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}
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}
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return topotest.json_cmp(output, expected)
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test_func = functools.partial(_bgp_converge_r2)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "ORF filtering is not working from R1 to R2"
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r2.vtysh_cmd(
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"""
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configure terminal
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ip prefix-list r1 seq 10 permit 10.10.10.2/32
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"""
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)
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def _bgp_orf_changed_r1():
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output = json.loads(
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r1.vtysh_cmd(
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"show bgp ipv4 unicast neighbor 192.168.1.2 advertised-routes json"
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)
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)
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expected = {"advertisedRoutes": {"10.10.10.1/32": {}, "10.10.10.2/32": {}}}
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return topotest.json_cmp(output, expected)
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test_func = functools.partial(_bgp_orf_changed_r1)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "Can't apply new ORF from R1 to R2"
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def _bgp_orf_changed_r2():
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output = json.loads(r2.vtysh_cmd("show bgp ipv4 unicast json"))
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expected = {
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"routes": {
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"10.10.10.1/32": [{"valid": True}],
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"10.10.10.2/32": [{"valid": True}],
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}
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}
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return topotest.json_cmp(output, expected)
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test_func = functools.partial(_bgp_orf_changed_r2)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "New ORF filtering is not working from R1 to R2"
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r2.vtysh_cmd(
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"""
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configure terminal
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no ip prefix-list r1 seq 10 permit 10.10.10.2/32
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"""
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)
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test_func = functools.partial(_bgp_converge_r1)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "Can't apply initial ORF from R1 to R2"
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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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