diff options
Diffstat (limited to 'tests/topotests/bgp_gshut')
20 files changed, 560 insertions, 0 deletions
diff --git a/tests/topotests/bgp_gshut/__init__.py b/tests/topotests/bgp_gshut/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/tests/topotests/bgp_gshut/__init__.py diff --git a/tests/topotests/bgp_gshut/r1/bgp_route_1.json b/tests/topotests/bgp_gshut/r1/bgp_route_1.json new file mode 100644 index 0000000..f3921b2 --- /dev/null +++ b/tests/topotests/bgp_gshut/r1/bgp_route_1.json @@ -0,0 +1,12 @@ +{ + "prefix":"13.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "metric":0, + "locPrf":100, + "valid":true + } + ] +} + diff --git a/tests/topotests/bgp_gshut/r1/bgp_route_2.json b/tests/topotests/bgp_gshut/r1/bgp_route_2.json new file mode 100644 index 0000000..754a0ed --- /dev/null +++ b/tests/topotests/bgp_gshut/r1/bgp_route_2.json @@ -0,0 +1,17 @@ +{ + "prefix":"13.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "metric":0, + "locPrf":0, + "valid":true, + "community":{ + "string":"graceful-shutdown", + "list":[ + "gracefulShutdown" + ] + } + } + ] +} diff --git a/tests/topotests/bgp_gshut/r1/bgpd.conf b/tests/topotests/bgp_gshut/r1/bgpd.conf new file mode 100644 index 0000000..ab6f47a --- /dev/null +++ b/tests/topotests/bgp_gshut/r1/bgpd.conf @@ -0,0 +1,10 @@ +! exit1 +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 192.168.255.1 remote-as 65001 + neighbor 192.168.255.1 timers connect 10 + address-family ipv4 unicast + network 11.1.1.1/32 + exit-address-family +! diff --git a/tests/topotests/bgp_gshut/r1/zebra.conf b/tests/topotests/bgp_gshut/r1/zebra.conf new file mode 100644 index 0000000..9904bb4 --- /dev/null +++ b/tests/topotests/bgp_gshut/r1/zebra.conf @@ -0,0 +1,9 @@ +! exit1 +interface lo + ip address 172.16.255.254/32 +! +interface r1-eth0 + ip address 192.168.255.2/30 +! +ip forwarding +! diff --git a/tests/topotests/bgp_gshut/r2/bgp_sum_1.json b/tests/topotests/bgp_gshut/r2/bgp_sum_1.json new file mode 100644 index 0000000..9d8948a --- /dev/null +++ b/tests/topotests/bgp_gshut/r2/bgp_sum_1.json @@ -0,0 +1,15 @@ +{ +"ipv4Unicast":{ + "peers":{ + "192.168.254.2":{ + "remoteAs":65003, + "state":"Established" + }, + "192.168.255.2":{ + "remoteAs":65001, + "state":"Established" + } + }, + "totalPeers":2 +} +} diff --git a/tests/topotests/bgp_gshut/r2/bgp_sum_2.json b/tests/topotests/bgp_gshut/r2/bgp_sum_2.json new file mode 100644 index 0000000..7183db6 --- /dev/null +++ b/tests/topotests/bgp_gshut/r2/bgp_sum_2.json @@ -0,0 +1,15 @@ +{ +"ipv4Unicast":{ + "peers":{ + "192.168.252.2":{ + "remoteAs":65005, + "state":"Established" + }, + "192.168.253.2":{ + "remoteAs":65004, + "state":"Established" + } + }, + "totalPeers":2 +} +} diff --git a/tests/topotests/bgp_gshut/r2/bgpd.conf b/tests/topotests/bgp_gshut/r2/bgpd.conf new file mode 100644 index 0000000..b0ca4e6 --- /dev/null +++ b/tests/topotests/bgp_gshut/r2/bgpd.conf @@ -0,0 +1,20 @@ +! +router bgp 65001 + no bgp ebgp-requires-policy + timers bgp 3 9 + neighbor 192.168.255.2 remote-as 65001 + neighbor 192.168.254.2 remote-as 65003 + neighbor 192.168.255.2 timers connect 10 + neighbor 192.168.254.2 timers connect 10 + address-family ipv4 unicast + redistribute connected + exit-address-family +! +router bgp 65001 vrf vrf1 + no bgp ebgp-requires-policy + timers bgp 3 9 + neighbor 192.168.253.2 remote-as 65004 + neighbor 192.168.253.2 timers connect 10 + neighbor 192.168.252.2 remote-as 65005 + neighbor 192.168.252.2 timers connect 10 +! diff --git a/tests/topotests/bgp_gshut/r2/zebra.conf b/tests/topotests/bgp_gshut/r2/zebra.conf new file mode 100644 index 0000000..0da0501 --- /dev/null +++ b/tests/topotests/bgp_gshut/r2/zebra.conf @@ -0,0 +1,13 @@ +! spine +interface r2-eth0 + ip address 192.168.255.1/30 +! +interface r2-eth1 + ip address 192.168.254.1/30 +! +interface r2-eth2 vrf vrf1 + ip address 192.168.253.1/30 +! +interface r2-eth3 vrf vrf1 + ip address 192.168.252.1/30 +! diff --git a/tests/topotests/bgp_gshut/r3/bgp_route_1.json b/tests/topotests/bgp_gshut/r3/bgp_route_1.json new file mode 100644 index 0000000..94de01a --- /dev/null +++ b/tests/topotests/bgp_gshut/r3/bgp_route_1.json @@ -0,0 +1,9 @@ +{ + "prefix":"11.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "valid":true + } + ] +} diff --git a/tests/topotests/bgp_gshut/r3/bgp_route_2.json b/tests/topotests/bgp_gshut/r3/bgp_route_2.json new file mode 100644 index 0000000..f918265 --- /dev/null +++ b/tests/topotests/bgp_gshut/r3/bgp_route_2.json @@ -0,0 +1,16 @@ +{ + "prefix":"11.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "locPrf":0, + "valid":true, + "community":{ + "string":"graceful-shutdown", + "list":[ + "gracefulShutdown" + ] + } + } + ] +} diff --git a/tests/topotests/bgp_gshut/r3/bgpd.conf b/tests/topotests/bgp_gshut/r3/bgpd.conf new file mode 100644 index 0000000..5d7c0cd --- /dev/null +++ b/tests/topotests/bgp_gshut/r3/bgpd.conf @@ -0,0 +1,11 @@ +! +router bgp 65003 + no bgp ebgp-requires-policy + no bgp network import-check + timers bgp 3 9 + neighbor 192.168.254.1 remote-as 65001 + neighbor 192.168.254.1 timers connect 10 + address-family ipv4 unicast + network 13.1.1.1/32 + exit-address-family +! diff --git a/tests/topotests/bgp_gshut/r3/zebra.conf b/tests/topotests/bgp_gshut/r3/zebra.conf new file mode 100644 index 0000000..f490d97 --- /dev/null +++ b/tests/topotests/bgp_gshut/r3/zebra.conf @@ -0,0 +1,9 @@ +! exit2 +interface lo + ip address 172.16.254.254/32 +! +interface r3-eth0 + ip address 192.168.254.2/30 +! +ip forwarding +! diff --git a/tests/topotests/bgp_gshut/r4/bgpd.conf b/tests/topotests/bgp_gshut/r4/bgpd.conf new file mode 100644 index 0000000..375f383 --- /dev/null +++ b/tests/topotests/bgp_gshut/r4/bgpd.conf @@ -0,0 +1,11 @@ +! +router bgp 65004 + no bgp ebgp-requires-policy + no bgp network import-check + timers bgp 3 9 + neighbor 192.168.253.1 remote-as 65001 + neighbor 192.168.253.1 timers connect 10 + address-family ipv4 unicast + network 14.1.1.1/32 + exit-address-family +! diff --git a/tests/topotests/bgp_gshut/r4/zebra.conf b/tests/topotests/bgp_gshut/r4/zebra.conf new file mode 100644 index 0000000..baba04c --- /dev/null +++ b/tests/topotests/bgp_gshut/r4/zebra.conf @@ -0,0 +1,9 @@ +! exit2 +interface lo + ip address 172.16.253.254/32 +! +interface r4-eth0 + ip address 192.168.253.2/30 +! +ip forwarding +! diff --git a/tests/topotests/bgp_gshut/r5/bgp_route_1.json b/tests/topotests/bgp_gshut/r5/bgp_route_1.json new file mode 100644 index 0000000..4e6fd79 --- /dev/null +++ b/tests/topotests/bgp_gshut/r5/bgp_route_1.json @@ -0,0 +1,9 @@ +{ + "prefix":"14.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "valid":true + } + ] +} diff --git a/tests/topotests/bgp_gshut/r5/bgp_route_2.json b/tests/topotests/bgp_gshut/r5/bgp_route_2.json new file mode 100644 index 0000000..980d8de --- /dev/null +++ b/tests/topotests/bgp_gshut/r5/bgp_route_2.json @@ -0,0 +1,16 @@ +{ + "prefix":"14.1.1.1\/32", + "paths":[ + { + "origin":"IGP", + "locPrf":0, + "valid":true, + "community":{ + "string":"graceful-shutdown", + "list":[ + "gracefulShutdown" + ] + } + } + ] +} diff --git a/tests/topotests/bgp_gshut/r5/bgpd.conf b/tests/topotests/bgp_gshut/r5/bgpd.conf new file mode 100644 index 0000000..15b49f5 --- /dev/null +++ b/tests/topotests/bgp_gshut/r5/bgpd.conf @@ -0,0 +1,7 @@ +! +router bgp 65005 + no bgp ebgp-requires-policy + timers bgp 3 9 + neighbor 192.168.252.1 remote-as 65001 + neighbor 192.168.252.1 timers connect 10 +! diff --git a/tests/topotests/bgp_gshut/r5/zebra.conf b/tests/topotests/bgp_gshut/r5/zebra.conf new file mode 100644 index 0000000..c4cbd52 --- /dev/null +++ b/tests/topotests/bgp_gshut/r5/zebra.conf @@ -0,0 +1,9 @@ +! exit1 +interface lo + ip address 172.16.252.254/32 +! +interface r5-eth0 + ip address 192.168.252.2/30 +! +ip forwarding +! diff --git a/tests/topotests/bgp_gshut/test_bgp_gshut.py b/tests/topotests/bgp_gshut/test_bgp_gshut.py new file mode 100644 index 0000000..61a0fe6 --- /dev/null +++ b/tests/topotests/bgp_gshut/test_bgp_gshut.py @@ -0,0 +1,343 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# +# test_bgp_gshut.py +# Part of NetDEF Topology Tests +# +# Copyright (c) 2020 by +# Vivek Venkatraman <vivek@nvidia.com> +# + +""" +Test the ability to initiate and stop BGP graceful shutdown. +Test both the vrf-specific and global configuration and operation. + +r1 +| +r2----r3 +| \ +| \ +r4 r5 + + +r2 is UUT and peers with r1 and r3 in default bgp instance and +with r4 and r5 in vrf vrf1. +r1-r2 peering is iBGP and the other peerings are eBGP. + +Check r2 initial convergence in default table +Define update-delay with max-delay in the default bgp instance on r2 +Shutdown peering on r1 toward r2 so that delay timers can be exercised +Clear bgp neighbors on r2 and then check for the 'in progress' indicator +Check that r2 only installs route learned from r4 after the max-delay timer expires +Define update-delay with max-delay and estabish-wait and check json output showing set +Clear neighbors on r2 and check that r3 installs route from r4 after establish-wait time +Remove update-delay timer on r2 to verify that it goes back to normal behavior +Clear neighbors on r2 and check that route install time on r2 does not delay +Define global bgp update-delay with max-delay and establish-wait on r2 +Check that r2 default instance and vrf1 have the max-delay and establish set +Clear neighbors on r2 and check route-install time is after the establish-wait timer + +Note that the keepalive/hold times were changed to 3/9 and the connect retry timer +to 10 to improve the odds the convergence timing in this test case is useful in the +event of packet loss. +""" + +import os +import re +import sys +import json +import pytest +import platform +from functools import partial + +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) + +# pylint: disable=C0413 +from lib import topotest +from lib.topogen import Topogen, TopoRouter, get_topogen +from lib.topolog import logger + +pytestmark = [pytest.mark.bgpd] + + +def build_topo(tgen): + for routern in range(1, 6): + tgen.add_router("r{}".format(routern)) + + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + switch = tgen.add_switch("s2") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r3"]) + + switch = tgen.add_switch("s3") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r4"]) + + switch = tgen.add_switch("s4") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r5"]) + + +def _run_cmd_and_check(router, cmd, results_file, retries=100, intvl=0.5): + json_file = "{}/{}".format(CWD, results_file) + expected = json.loads(open(json_file).read()) + test_func = partial(topotest.router_json_cmp, router, cmd, expected) + return topotest.run_and_expect(test_func, None, retries, intvl) + + +def setup_module(mod): + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + krel = platform.release() + if topotest.version_cmp(krel, "4.5") < 0: + tgen.errors = "Linux kernel version of at least 4.5 needed for bgp-gshut tests" + pytest.skip(tgen.errors) + + # Configure vrf and its slaves in the kernel on r2 + r2 = tgen.gears["r2"] + r2.run("ip link add vrf1 type vrf table 1000") + r2.run("ip link set vrf1 up") + r2.run("ip link set r2-eth2 master vrf1") + r2.run("ip link set r2-eth3 master vrf1") + + # Load FRR config and initialize all routers + for i, (rname, router) in enumerate(router_list.items(), 1): + router.load_config( + TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)) + ) + router.load_config( + TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname)) + ) + + tgen.start_router() + + # Basic peering test to see if things are ok + _, result = _run_cmd_and_check(r2, "show ip bgp summary json", "r2/bgp_sum_1.json") + assertmsg = "R2: Basic sanity test after init failed -- global peerings not up" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r2, "show ip bgp vrf vrf1 summary json", "r2/bgp_sum_2.json" + ) + assertmsg = "R2: Basic sanity test after init failed -- VRF peerings not up" + assert result is None, assertmsg + + +def teardown_module(mod): + tgen = get_topogen() + tgen.stop_topology() + + +def test_bgp_gshut(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + r3 = tgen.gears["r3"] + r4 = tgen.gears["r4"] + r5 = tgen.gears["r5"] + + # Verify initial route states + logger.info("\nVerify initial route states") + + _, result = _run_cmd_and_check( + r1, "show ip bgp 13.1.1.1/32 json", "r1/bgp_route_1.json" + ) + assertmsg = "R1: Route 13.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r3, "show ip bgp 11.1.1.1/32 json", "r3/bgp_route_1.json" + ) + assertmsg = "R3: Route 11.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r5, "show ip bgp 14.1.1.1/32 json", "r5/bgp_route_1.json" + ) + assertmsg = "R5: Route 14.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + logger.info("\nInitial route states are as expected") + + # "Test #1: Enable BGP-wide graceful-shutdown on R2 and check routes on peers" + logger.info( + "\nTest #1: Enable BGP-wide graceful-shutdown on R2 and check routes on peers" + ) + + r2.vtysh_cmd( + """ + configure terminal + bgp graceful-shutdown + """ + ) + + # R1, R3 and R5 should see routes from R2 with GSHUT. In addition, + # R1 should see LOCAL_PREF of 0 + _, result = _run_cmd_and_check( + r1, "show ip bgp 13.1.1.1/32 json", "r1/bgp_route_2.json" + ) + assertmsg = "R1: Route 13.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r3, "show ip bgp 11.1.1.1/32 json", "r3/bgp_route_2.json" + ) + assertmsg = "R3: Route 11.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r5, "show ip bgp 14.1.1.1/32 json", "r5/bgp_route_2.json" + ) + assertmsg = "R5: Route 14.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + logger.info( + "\nTest #1: Successful, routes have GSHUT and/or LPREF of 0 as expected" + ) + + # "Test #2: Turn off BGP-wide graceful-shutdown on R2 and check routes on peers" + logger.info( + "\nTest #2: Turn off BGP-wide graceful-shutdown on R2 and check routes on peers" + ) + + r2.vtysh_cmd( + """ + configure terminal + no bgp graceful-shutdown + """ + ) + + # R1, R3 and R5 should see routes from R2 with their original attributes + _, result = _run_cmd_and_check( + r1, "show ip bgp 13.1.1.1/32 json", "r1/bgp_route_1.json" + ) + assertmsg = "R1: Route 13.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r3, "show ip bgp 11.1.1.1/32 json", "r3/bgp_route_1.json" + ) + assertmsg = "R3: Route 11.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r5, "show ip bgp 14.1.1.1/32 json", "r5/bgp_route_1.json" + ) + assertmsg = "R5: Route 14.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + logger.info( + "\nTest #2: Successful, routes have their original attributes with default LPREF and without GSHUT" + ) + + # "Test #3: Enable graceful-shutdown on R2 only in VRF1 and check routes on peers" + logger.info( + "\nTest #3: Enable graceful-shutdown on R2 only in VRF1 and check routes on peers" + ) + + r2.vtysh_cmd( + """ + configure terminal + router bgp 65001 vrf vrf1 + bgp graceful-shutdown + """ + ) + + # R1 and R3 should see no change to their routes + _, result = _run_cmd_and_check( + r1, "show ip bgp 13.1.1.1/32 json", "r1/bgp_route_1.json" + ) + assertmsg = "R1: Route 13.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r3, "show ip bgp 11.1.1.1/32 json", "r3/bgp_route_1.json" + ) + assertmsg = "R3: Route 11.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + # R5 should see routes from R2 with GSHUT. + _, result = _run_cmd_and_check( + r5, "show ip bgp 14.1.1.1/32 json", "r5/bgp_route_2.json" + ) + assertmsg = "R5: Route 14.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + logger.info("\nTest #3: Successful, only VRF peers like R5 see routes with GSHUT") + + # "Test #4: Try to enable BGP-wide graceful-shutdown on R2 while it is configured in VRF1" + logger.info( + "\nTest #4: Try to enable BGP-wide graceful-shutdown on R2 while it is configured in VRF1" + ) + + ret = r2.vtysh_cmd( + """ + configure terminal + bgp graceful-shutdown + """ + ) + + # This should fail + assertmsg = "R2: BGP-wide graceful-shutdown config not rejected even though it is enabled in VRF1" + assert ( + re.search("global graceful-shutdown not permitted", ret) is not None + ), assertmsg + + logger.info( + "\nTest #4: Successful, BGP-wide graceful-shutdown rejected as it is enabled in VRF" + ) + + # "Test #5: Turn off graceful-shutdown on R2 in VRF1 and check routes on peers" + logger.info( + "\nTest #5: Turn off graceful-shutdown on R2 in VRF1 and check routes on peers" + ) + + r2.vtysh_cmd( + """ + configure terminal + router bgp 65001 vrf vrf1 + no bgp graceful-shutdown + """ + ) + + # R1 and R3 should see no change to their routes + _, result = _run_cmd_and_check( + r1, "show ip bgp 13.1.1.1/32 json", "r1/bgp_route_1.json" + ) + assertmsg = "R1: Route 13.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + _, result = _run_cmd_and_check( + r3, "show ip bgp 11.1.1.1/32 json", "r3/bgp_route_1.json" + ) + assertmsg = "R3: Route 11.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + # R5 should see routes from R2 with original attributes. + _, result = _run_cmd_and_check( + r5, "show ip bgp 14.1.1.1/32 json", "r5/bgp_route_1.json" + ) + assertmsg = "R5: Route 14.1.1.1/32 not present or has unexpected params" + assert result is None, assertmsg + + logger.info( + "\nTest #5: Successful, routes have their original attributes with default LPREF and without GSHUT" + ) + + # tgen.mininet_cli() + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |