237 lines
6.1 KiB
Python
237 lines
6.1 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_bgp_suppress_fib.py
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#
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# Copyright (c) 2019 by
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#
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"""
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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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from functools import partial
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from lib.topolog import logger
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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, 4):
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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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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r2"])
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switch.add_link(tgen.gears["r3"])
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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 _, (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_route():
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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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r3 = tgen.gears["r3"]
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json_file = "{}/r3/v4_route.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r3,
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"show ip route 40.0.0.0 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=20, wait=0.5)
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assertmsg = '"r3" JSON output mismatches'
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assert result is None, assertmsg
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json_file = "{}/r3/v4_route2.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r3,
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"show ip route 50.0.0.0 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
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assert result is None, assertmsg
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json_file = "{}/r3/v4_route3.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r3,
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"show ip route 60.0.0.0 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
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assert result is None, assertmsg
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def test_bgp_better_admin_won():
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"A better Admin distance protocol may come along and knock us out"
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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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r2 = tgen.gears["r2"]
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r2.vtysh_cmd("conf\nip route 40.0.0.0/8 10.0.0.10")
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json_file = "{}/r2/v4_override.json".format(CWD)
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expected = json.loads(open(json_file).read())
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logger.info(expected)
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test_func = partial(
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topotest.router_json_cmp, r2, "show ip route 40.0.0.0 json", expected
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)
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_, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
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assertmsg = '"r2" static route did not take over'
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assert result is None, assertmsg
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r3 = tgen.gears["r3"]
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json_file = "{}/r3/v4_override.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp, r3, "show ip route 40.0.0.0 json", expected
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)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"r3" route to 40.0.0.0 should have been lost'
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assert result is None, assertmsg
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r2.vtysh_cmd("conf\nno ip route 40.0.0.0/8 10.0.0.10")
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json_file = "{}/r3/v4_route.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r3,
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"show ip route 40.0.0.0 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"r3" route to 40.0.0.0 did not come back'
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assert result is None, assertmsg
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def test_bgp_allow_as_in():
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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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r2 = tgen.gears["r2"]
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config_file = "{}/r2/bgpd.allowas_in.conf".format(CWD)
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r2.run("vtysh -f {}".format(config_file))
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json_file = "{}/r2/bgp_ipv4_allowas.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r2,
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"show bgp ipv4 uni 192.168.1.1/32 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
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assertmsg = '"r2" static redistribution failed into bgp'
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assert result is None, assertmsg
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r1 = tgen.gears["r1"]
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json_file = "{}/r1/bgp_ipv4_allowas.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r1,
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"show bgp ipv4 uni 192.168.1.1/32 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"r1" 192.168.1.1/32 route should have arrived'
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assert result is None, assertmsg
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r2.vtysh_cmd("conf\nno ip route 192.168.1.1/32 10.0.0.10")
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json_file = "{}/r2/no_bgp_ipv4_allowas.json".format(CWD)
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expected = json.loads(open(json_file).read())
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test_func = partial(
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topotest.router_json_cmp,
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r2,
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"show bgp ipv4 uni 192.168.1.1/32 json",
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expected,
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)
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_, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
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assertmsg = '"r2" 192.168.1.1/32 route should be gone'
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assert result is None, assertmsg
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def test_local_vs_non_local():
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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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r2 = tgen.gears["r2"]
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output = json.loads(r2.vtysh_cmd("show bgp ipv4 uni 60.0.0.0/24 json"))
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paths = output["paths"]
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for i in range(len(paths)):
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if "fibPending" in paths[i]:
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assert False, "Route 60.0.0.0/24 should not have fibPending"
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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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