diff options
Diffstat (limited to 'tests/topotests/bgp_lu_explicitnull')
5 files changed, 238 insertions, 0 deletions
diff --git a/tests/topotests/bgp_lu_explicitnull/r1/bgpd.conf b/tests/topotests/bgp_lu_explicitnull/r1/bgpd.conf new file mode 100644 index 0000000..a31439c --- /dev/null +++ b/tests/topotests/bgp_lu_explicitnull/r1/bgpd.conf @@ -0,0 +1,15 @@ +router bgp 65500 + bgp router-id 192.0.2.1 + no bgp ebgp-requires-policy + bgp labeled-unicast explicit-null + neighbor 192.0.2.2 remote-as 65501 +! + address-family ipv4 unicast + no neighbor 192.0.2.2 activate + network 192.168.2.1/32 + exit-address-family + ! + address-family ipv4 labeled-unicast + neighbor 192.0.2.2 activate + exit-address-family +! diff --git a/tests/topotests/bgp_lu_explicitnull/r1/zebra.conf b/tests/topotests/bgp_lu_explicitnull/r1/zebra.conf new file mode 100644 index 0000000..b845748 --- /dev/null +++ b/tests/topotests/bgp_lu_explicitnull/r1/zebra.conf @@ -0,0 +1,6 @@ +interface r1-eth0 + ip address 192.0.2.1/24 +! +interface r1-eth1 + ip address 192.168.2.1/32 +!
\ No newline at end of file diff --git a/tests/topotests/bgp_lu_explicitnull/r2/bgpd.conf b/tests/topotests/bgp_lu_explicitnull/r2/bgpd.conf new file mode 100644 index 0000000..41c2b9b --- /dev/null +++ b/tests/topotests/bgp_lu_explicitnull/r2/bgpd.conf @@ -0,0 +1,15 @@ +router bgp 65501 + bgp router-id 192.0.2.2 + no bgp ebgp-requires-policy + bgp labeled-unicast explicit-null + neighbor 192.0.2.1 remote-as 65500 +! + address-family ipv4 unicast + no neighbor 192.0.2.1 activate + network 192.168.2.2/32 + exit-address-family + ! + address-family ipv4 labeled-unicast + neighbor 192.0.2.1 activate + exit-address-family +! diff --git a/tests/topotests/bgp_lu_explicitnull/r2/zebra.conf b/tests/topotests/bgp_lu_explicitnull/r2/zebra.conf new file mode 100644 index 0000000..9a63961 --- /dev/null +++ b/tests/topotests/bgp_lu_explicitnull/r2/zebra.conf @@ -0,0 +1,6 @@ +interface r2-eth0 + ip address 192.0.2.2/24 +! +interface r2-eth1 + ip address 192.168.2.2/32 +! diff --git a/tests/topotests/bgp_lu_explicitnull/test_bgp_lu_explicitnull.py b/tests/topotests/bgp_lu_explicitnull/test_bgp_lu_explicitnull.py new file mode 100644 index 0000000..0656e1e --- /dev/null +++ b/tests/topotests/bgp_lu_explicitnull/test_bgp_lu_explicitnull.py @@ -0,0 +1,196 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC +# +# test_bgp_explicitnull.py +# +# Part of NetDEF Topology Tests +# +# Copyright 2023 by 6WIND S.A. +# + +""" +test_bgp_lu_explicitnull.py: Test BGP LU label allocation +""" + +import os +import sys +import json +import functools +import pytest + +# Save the Current Working Directory to find configuration files. +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) + +# pylint: disable=C0413 +# Import topogen and topotest helpers +from lib import topotest +from lib.topogen import Topogen, TopoRouter, get_topogen +from lib.topolog import logger + + +pytestmark = [pytest.mark.bgpd] + + +# Basic scenario for BGP-LU. Nodes are directly connected. +# The 192.168.2.2/32 prefix is advertised from r2 to r1 +# The explicit-null label should be used +# The 192.168.2.1/32 prefix is advertised from r1 to r2 +# The explicit-null label should be used +# Traffic from 192.168.2.1 to 192.168.2.2 should use explicit-null label +# +# AS65500 BGP-LU AS65501 +# +-----+ +-----+ +# | |.1 .2| | +# | 1 +----------------+ 2 + 192.168.0.2/32 +# | | 192.0.2.0/24 | | +# +-----+ +-----+ + + +def build_topo(tgen): + "Build function" + + # Create routers + tgen.add_router("r1") + tgen.add_router("r2") + + # r1-r2 + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + # r1 + switch = tgen.add_switch("s2") + switch.add_link(tgen.gears["r1"]) + + # r2 + switch = tgen.add_switch("s3") + switch.add_link(tgen.gears["r2"]) + + +def setup_module(mod): + "Sets up the pytest environment" + # This function initiates the topology build with Topogen... + tgen = Topogen(build_topo, mod.__name__) + + # Skip if no mpls support + if not tgen.hasmpls: + logger.info("MPLS is not available, skipping test") + pytest.skip("MPLS is not available, skipping") + return + + # ... and here it calls Mininet initialization functions. + tgen.start_topology() + + # This is a sample of configuration loading. + router_list = tgen.routers() + + # Enable mpls input for routers, so we can ping + sval = "net.mpls.conf.{}.input" + topotest.sysctl_assure(router_list["r2"], sval.format("r2-eth0"), 1) + topotest.sysctl_assure(router_list["r1"], sval.format("r1-eth0"), 1) + + # For all registred routers, load the zebra configuration file + for rname, router in router_list.items(): + 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)) + ) + + # After loading the configurations, this function loads configured daemons. + tgen.start_router() + + +def teardown_module(mod): + "Teardown the pytest environment" + tgen = get_topogen() + + # This function tears down the whole topology. + tgen.stop_topology() + + +def check_show_ip_label_prefix_found(router, ipversion, prefix, label): + output = json.loads( + router.vtysh_cmd("show {} route {} json".format(ipversion, prefix)) + ) + expected = { + prefix: [ + {"prefix": prefix, "nexthops": [{"fib": True, "labels": [int(label)]}]} + ] + } + return topotest.json_cmp(output, expected) + + +def test_converge_bgplu(): + "Wait for protocol convergence" + + tgen = get_topogen() + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # tgen.mininet_cli(); + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + # Check r1 gets prefix 192.168.2.2/32 + test_func = functools.partial( + check_show_ip_label_prefix_found, + tgen.gears["r1"], + "ip", + "192.168.2.2/32", + "0", + ) + success, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5) + assert success, "r1, prefix 192.168.2.2/32 from r2 not present" + + # Check r2 gets prefix 192.168.2.1/32 + test_func = functools.partial( + check_show_ip_label_prefix_found, + tgen.gears["r2"], + "ip", + "192.168.2.1/32", + "0", + ) + success, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5) + assert success, "r2, prefix 192.168.2.1/32 from r1 not present" + + +def test_traffic_connectivity(): + "Wait for protocol convergence" + + tgen = get_topogen() + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + def _check_ping(name, dest_addr, src_addr): + tgen = get_topogen() + output = tgen.gears[name].run( + "ping {} -c 1 -w 1 -I {}".format(dest_addr, src_addr) + ) + logger.info(output) + if " 0% packet loss" not in output: + return True + + logger.info("r1, check ping 192.168.2.2 from 192.168.2.1 is OK") + tgen = get_topogen() + func = functools.partial(_check_ping, "r1", "192.168.2.2", "192.168.2.1") + # tgen.mininet_cli() + success, result = topotest.run_and_expect(func, None, count=10, wait=0.5) + assert result is None, "r1, ping to 192.168.2.2 from 192.168.2.1 fails" + + +def test_memory_leak(): + "Run the memory leak test and report results." + tgen = get_topogen() + if not tgen.is_memleak_enabled(): + pytest.skip("Memory leak test/report is disabled") + + tgen.report_memory_leaks() + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |