632 lines
21 KiB
Python
632 lines
21 KiB
Python
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#!/usr/bin/python
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# SPDX-License-Identifier: ISC
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#
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# Copyright (c) 2020 by VMware, Inc. ("VMware")
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# Used Copyright (c) 2018 by Network Device Education Foundation,
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# Inc. ("NetDEF") in this file.
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#
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"""
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Following tests are covered to test bgp community functionality:
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- Verify routes are not advertised when NO-ADVERTISE Community is applied
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"""
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import os
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import sys
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import time
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import pytest
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# Save the Current Working Directory to find configuration files.
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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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# Import topogen and topotest helpers
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from lib.topogen import Topogen, get_topogen
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# Import topoJson from lib, to create topology and initial configuration
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from lib.common_config import (
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start_topology,
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write_test_header,
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write_test_footer,
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reset_config_on_routers,
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verify_rib,
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create_static_routes,
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check_address_types,
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step,
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create_route_maps,
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create_prefix_lists,
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create_route_maps,
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required_linux_kernel_version,
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)
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from lib.topolog import logger
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from lib.bgp import (
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verify_bgp_convergence,
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create_router_bgp,
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verify_bgp_rib,
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)
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from lib.topojson import build_config_from_json
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from copy import deepcopy
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pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
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# Global variables
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BGP_CONVERGENCE = False
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ADDR_TYPES = check_address_types()
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NETWORK = {"ipv4": "2.2.2.2/32", "ipv6": "22:22::2/128"}
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NEXT_HOP_IP = {}
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def setup_module(mod):
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"""
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Sets up the pytest environment
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* `mod`: module name
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"""
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# Required linux kernel version for this suite to run.
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result = required_linux_kernel_version("4.15")
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if result is not True:
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pytest.skip("Kernel requirements are not met, kernel version should be >= 4.15")
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testsuite_run_time = time.asctime(time.localtime(time.time()))
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logger.info("Testsuite start time: {}".format(testsuite_run_time))
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logger.info("=" * 40)
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logger.info("Running setup_module to create topology")
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# This function initiates the topology build with Topogen...
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json_file = "{}/bgp_communities.json".format(CWD)
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tgen = Topogen(json_file, mod.__name__)
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global topo
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topo = tgen.json_topo
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# ... and here it calls Mininet initialization functions.
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# Starting topology, create tmp files which are loaded to routers
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# to start daemons and then start routers
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start_topology(tgen)
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# Creating configuration from JSON
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build_config_from_json(tgen, topo)
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# Checking BGP convergence
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global BGP_CONVERGENCE
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global ADDR_TYPES
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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# Api call verify whether BGP is converged
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BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
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assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
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BGP_CONVERGENCE
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)
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logger.info("Running setup_module() done")
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def teardown_module(mod):
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"""
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Teardown the pytest environment
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* `mod`: module name
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"""
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logger.info("Running teardown_module to delete topology")
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tgen = get_topogen()
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# Stop toplogy and Remove tmp files
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tgen.stop_topology()
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logger.info(
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"Testsuite end time: {}".format(time.asctime(time.localtime(time.time())))
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)
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logger.info("=" * 40)
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#####################################################
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#
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# Tests starting
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#
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#####################################################
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def test_bgp_no_advertise_community_p0(request):
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"""
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Verify routes are not advertised when NO-ADVERTISE Community is applied
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"""
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tc_name = request.node.name
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write_test_header(tc_name)
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tgen = get_topogen()
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reset_config_on_routers(tgen)
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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NEXT_HOP_IP = {
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"ipv4": topo["routers"]["r0"]["links"]["r1"]["ipv4"].split("/")[0],
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"ipv6": topo["routers"]["r0"]["links"]["r1"]["ipv6"].split("/")[0],
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}
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# configure static routes
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dut = "r3"
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protocol = "bgp"
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for addr_type in ADDR_TYPES:
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# Enable static routes
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input_dict = {
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"r1": {
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"static_routes": [
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{"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]}
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]
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}
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}
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logger.info("Configure static routes")
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result = create_static_routes(tgen, input_dict)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step("configure redistribute static and connected in Router BGP " "in R1")
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input_dict_2 = {
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"r1": {
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"bgp": {
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"address_family": {
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addr_type: {
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"unicast": {
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"redistribute": [
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{"redist_type": "static"},
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{"redist_type": "connected"},
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]
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}
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}
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}
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}
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}
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}
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result = create_router_bgp(tgen, topo, input_dict_2)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step(
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"BGP neighbors are up, static and connected route advertised from"
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" R1 are present on R2 BGP table and RIB using show ip bgp and "
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" show ip route"
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)
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step(
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"Static and connected route advertised from R1 are present on R3"
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" BGP table and RIB using show ip bgp and show ip route"
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)
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dut = "r3"
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protocol = "bgp"
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result = verify_bgp_rib(tgen, addr_type, dut, input_dict)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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result = verify_rib(tgen, addr_type, dut, input_dict, protocol=protocol)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step("Configure prefix list P1 on R2 to permit route coming from R1")
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# Create ip prefix list
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input_dict_2 = {
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"r2": {
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"prefix_lists": {
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addr_type: {
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"pf_list_1_{}".format(addr_type): [
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{"seqid": 10, "network": "any", "action": "permit"}
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]
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}
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}
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}
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}
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result = create_prefix_lists(tgen, input_dict_2)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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# Create route map
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input_dict_3 = {
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"r2": {
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"route_maps": {
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"rmap_match_pf_1_{}".format(addr_type): [
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{
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"action": "permit",
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"seq_id": "5",
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"match": {
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addr_type: {"prefix_lists": "pf_list_1_" + addr_type}
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},
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"set": {"community": {"num": "no-advertise"}},
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}
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]
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}
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}
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}
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result = create_route_maps(tgen, input_dict_3)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step(
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"Apply route-map RM1 on R2, R2 to R3 BGP neighbor with no"
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" advertise community"
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)
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# Configure neighbor for route map
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input_dict_4 = {
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"r2": {
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"bgp": {
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"address_family": {
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addr_type: {
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"unicast": {
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"neighbor": {
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"r1": {
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"dest_link": {
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"r2": {
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"route_maps": [
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{
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"name": "rmap_match_pf_1_"
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+ addr_type,
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"direction": "in",
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}
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]
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}
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}
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}
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}
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}
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}
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}
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}
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}
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}
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result = create_router_bgp(tgen, topo, input_dict_4)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step(
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"After advertising no advertise community to BGP neighbor "
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"static and connected router got removed from R3 verify using "
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"show ip bgp & show ip route"
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)
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result = verify_bgp_rib(tgen, addr_type, dut, input_dict, expected=False)
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assert result is not True, (
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"Testcase {} : Failed \n Expected: "
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"Routes still present in {} router. Found: {}".format(tc_name, dut, result)
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)
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result = verify_rib(
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tgen, addr_type, dut, input_dict, protocol=protocol, expected=False
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)
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assert (
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result is not True
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), "Testcase {} : Failed \n Expected: Routes still present in {} router. Found: {}".format(
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tc_name, dut, result
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)
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step("Remove and Add no advertise community")
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# Configure neighbor for route map
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input_dict_4 = {
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"r2": {
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"bgp": {
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"address_family": {
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addr_type: {
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"unicast": {
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"neighbor": {
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"r1": {
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"dest_link": {
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"r2": {
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"route_maps": [
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{
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"name": "rmap_match_pf_1_"
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+ addr_type,
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"direction": "in",
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"delete": True,
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}
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]
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}
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}
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}
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}
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}
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}
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}
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}
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}
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}
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result = create_router_bgp(tgen, topo, input_dict_4)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step(
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"After removing no advertise community from BGP neighbor "
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"static and connected router got advertised to R3 and "
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"removing route-map, verify route using show ip bgp"
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" and show ip route"
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)
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result = verify_bgp_rib(tgen, addr_type, dut, input_dict)
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assert (
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result is True
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), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
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tc_name, result
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)
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result = verify_rib(tgen, addr_type, dut, input_dict, protocol=protocol)
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assert (
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result is True
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), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
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tc_name, result
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)
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step("Repeat above steps when IBGP nbr configured between R1, R2 & R2, R3")
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topo1 = deepcopy(topo)
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topo1["routers"]["r1"]["bgp"]["local_as"] = "100"
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topo1["routers"]["r2"]["bgp"]["local_as"] = "100"
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topo1["routers"]["r3"]["bgp"]["local_as"] = "100"
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for rtr in ["r1", "r2", "r3"]:
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if "bgp" in topo1["routers"][rtr].keys():
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delete_bgp = {rtr: {"bgp": {"delete": True}}}
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result = create_router_bgp(tgen, topo1, delete_bgp)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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config_bgp = {
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rtr: {"bgp": {"local_as": topo1["routers"][rtr]["bgp"]["local_as"]}}
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}
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result = create_router_bgp(tgen, topo1, config_bgp)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
build_config_from_json(tgen, topo1, save_bkup=False)
|
||
|
|
|
||
|
|
step("verify bgp convergence before starting test case")
|
||
|
|
|
||
|
|
bgp_convergence = verify_bgp_convergence(tgen, topo1)
|
||
|
|
assert bgp_convergence is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, bgp_convergence
|
||
|
|
)
|
||
|
|
|
||
|
|
# configure static routes
|
||
|
|
dut = "r3"
|
||
|
|
protocol = "bgp"
|
||
|
|
|
||
|
|
for addr_type in ADDR_TYPES:
|
||
|
|
# Enable static routes
|
||
|
|
input_dict = {
|
||
|
|
"r1": {
|
||
|
|
"static_routes": [
|
||
|
|
{"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]}
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
logger.info("Configure static routes")
|
||
|
|
result = create_static_routes(tgen, input_dict)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step("configure redistribute static and connected in Router " "BGP in R1")
|
||
|
|
|
||
|
|
input_dict_2 = {
|
||
|
|
"r1": {
|
||
|
|
"bgp": {
|
||
|
|
"address_family": {
|
||
|
|
addr_type: {
|
||
|
|
"unicast": {
|
||
|
|
"redistribute": [
|
||
|
|
{"redist_type": "static"},
|
||
|
|
{"redist_type": "connected"},
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
result = create_router_bgp(tgen, topo, input_dict_2)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step(
|
||
|
|
"BGP neighbors are up, static and connected route advertised from"
|
||
|
|
" R1 are present on R2 BGP table and RIB using show ip bgp and "
|
||
|
|
" show ip route"
|
||
|
|
)
|
||
|
|
step(
|
||
|
|
"Static and connected route advertised from R1 are present on R3"
|
||
|
|
" BGP table and RIB using show ip bgp and show ip route"
|
||
|
|
)
|
||
|
|
|
||
|
|
dut = "r2"
|
||
|
|
protocol = "bgp"
|
||
|
|
result = verify_bgp_rib(tgen, addr_type, dut, input_dict)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
result = verify_rib(tgen, addr_type, dut, input_dict, protocol=protocol)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step("Configure prefix list P1 on R2 to permit route coming from R1")
|
||
|
|
# Create ip prefix list
|
||
|
|
input_dict_2 = {
|
||
|
|
"r2": {
|
||
|
|
"prefix_lists": {
|
||
|
|
addr_type: {
|
||
|
|
"pf_list_1_{}".format(addr_type): [
|
||
|
|
{"seqid": 10, "network": "any", "action": "permit"}
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
result = create_prefix_lists(tgen, input_dict_2)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
# Create route map
|
||
|
|
input_dict_3 = {
|
||
|
|
"r2": {
|
||
|
|
"route_maps": {
|
||
|
|
"rmap_match_pf_1_{}".format(addr_type): [
|
||
|
|
{
|
||
|
|
"action": "permit",
|
||
|
|
"seq_id": "5",
|
||
|
|
"match": {
|
||
|
|
addr_type: {"prefix_lists": "pf_list_1_" + addr_type}
|
||
|
|
},
|
||
|
|
"set": {"community": {"num": "no-advertise"}},
|
||
|
|
}
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
result = create_route_maps(tgen, input_dict_3)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
step(
|
||
|
|
"Apply route-map RM1 on R2, R2 to R3 BGP neighbor with no"
|
||
|
|
" advertise community"
|
||
|
|
)
|
||
|
|
|
||
|
|
# Configure neighbor for route map
|
||
|
|
input_dict_4 = {
|
||
|
|
"r2": {
|
||
|
|
"bgp": {
|
||
|
|
"address_family": {
|
||
|
|
addr_type: {
|
||
|
|
"unicast": {
|
||
|
|
"neighbor": {
|
||
|
|
"r1": {
|
||
|
|
"dest_link": {
|
||
|
|
"r2": {
|
||
|
|
"route_maps": [
|
||
|
|
{
|
||
|
|
"name": "rmap_match_pf_1_"
|
||
|
|
+ addr_type,
|
||
|
|
"direction": "in",
|
||
|
|
}
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
result = create_router_bgp(tgen, topo, input_dict_4)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step(
|
||
|
|
"After advertising no advertise community to BGP neighbor "
|
||
|
|
"static and connected router got removed from R3 verify using "
|
||
|
|
"show ip bgp & show ip route"
|
||
|
|
)
|
||
|
|
|
||
|
|
result = verify_bgp_rib(tgen, addr_type, dut, input_dict)
|
||
|
|
assert (
|
||
|
|
result is True
|
||
|
|
), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
result = verify_rib(tgen, addr_type, dut, input_dict, protocol=protocol)
|
||
|
|
assert (
|
||
|
|
result is True
|
||
|
|
), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step("Remove and Add no advertise community")
|
||
|
|
# Configure neighbor for route map
|
||
|
|
input_dict_4 = {
|
||
|
|
"r2": {
|
||
|
|
"bgp": {
|
||
|
|
"address_family": {
|
||
|
|
addr_type: {
|
||
|
|
"unicast": {
|
||
|
|
"neighbor": {
|
||
|
|
"r1": {
|
||
|
|
"dest_link": {
|
||
|
|
"r2": {
|
||
|
|
"route_maps": [
|
||
|
|
{
|
||
|
|
"name": "rmap_match_pf_1_"
|
||
|
|
+ addr_type,
|
||
|
|
"direction": "in",
|
||
|
|
"delete": True,
|
||
|
|
}
|
||
|
|
]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
result = create_router_bgp(tgen, topo, input_dict_4)
|
||
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
step(
|
||
|
|
"After removing no advertise community from BGP neighbor "
|
||
|
|
"static and connected router got advertised to R3 and "
|
||
|
|
"removing route verify using show ip bgp and "
|
||
|
|
" show ip route"
|
||
|
|
)
|
||
|
|
|
||
|
|
result = verify_bgp_rib(tgen, addr_type, dut, input_dict)
|
||
|
|
assert (
|
||
|
|
result is True
|
||
|
|
), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
result = verify_rib(tgen, addr_type, dut, input_dict, protocol=protocol)
|
||
|
|
assert (
|
||
|
|
result is True
|
||
|
|
), "Testcase {} : Failed \n Routes still present in R3 router. Error: {}".format(
|
||
|
|
tc_name, result
|
||
|
|
)
|
||
|
|
|
||
|
|
write_test_footer(tc_name)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
args = ["-s"] + sys.argv[1:]
|
||
|
|
sys.exit(pytest.main(args))
|