From 51582ed8c5c8aeec8056b030d2f2ab8c4f70f182 Mon Sep 17 00:00:00 2001 From: Kuldeep Kashyap Date: Tue, 14 Apr 2020 07:13:43 +0000 Subject: [PATCH] tests: Adding test suite bgp_gr_functionality_topo2 1. Test suite has 17 test cases to verify BGP-graceful-restart functionality 2. Execution time is ~20 Mins Signed-off-by: Kuldeep Kashyap --- .../bgp_gr_topojson_topo2.json | 334 ++ .../test_bgp_gr_functionality_topo2.py | 3085 +++++++++++++++++ 2 files changed, 3419 insertions(+) create mode 100644 tests/topotests/bgp_gr_functionality_topo2/bgp_gr_topojson_topo2.json create mode 100755 tests/topotests/bgp_gr_functionality_topo2/test_bgp_gr_functionality_topo2.py diff --git a/tests/topotests/bgp_gr_functionality_topo2/bgp_gr_topojson_topo2.json b/tests/topotests/bgp_gr_functionality_topo2/bgp_gr_topojson_topo2.json new file mode 100644 index 0000000000..75f192d3b6 --- /dev/null +++ b/tests/topotests/bgp_gr_functionality_topo2/bgp_gr_topojson_topo2.json @@ -0,0 +1,334 @@ +{ + "ipv4base":"192.168.0.0", + "ipv4mask":24, + "ipv6base":"fd00::", + "ipv6mask":64, + "link_ip_start":{"ipv4":"192.168.0.0", "v4mask":24, "ipv6":"fd00::", "v6mask":64}, + "lo_prefix":{"ipv4":"1.0.", "v4mask":32, "ipv6":"2001:DB8:F::", "v6mask":128}, + "routers":{ + "r1":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r2": {"ipv4":"auto", "ipv6":"auto"}, + "r3": {"ipv4":"auto", "ipv6":"auto"}, + "r5": {"ipv4":"auto", "ipv6":"auto"}, + "r6": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp": { + "local_as": "100", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "101.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r2": { + "dest_link": { + "r1": {} + } + }, + "r3": { + "dest_link": { + "r1": {} + } + }, + "r5": { + "dest_link": { + "r1": {} + } + }, + "r6": { + "dest_link": { + "r1": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "1::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r2": { + "dest_link": { + "r1": { + } + } + }, + "r3": { + "dest_link": { + "r1": { + } + } + }, + "r5": { + "dest_link": { + "r1": { + } + } + }, + "r6": { + "dest_link": { + "r1": { + } + } + } + } + } + } + } + } + }, + "r2":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r1": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp":{ + "local_as": "200", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "102.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r2": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "2::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r2": { + } + } + } + } + } + } + } + } + }, + "r3":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r1": {"ipv4":"auto", "ipv6":"auto"}, + "r4": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp":{ + "local_as": "100", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "103.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r3": {} + } + }, + "r4": { + "dest_link": { + "r3": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "3::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r3": { + } + } + }, + "r4": { + "dest_link": { + "r3": { + } + } + } + } + } + } + } + } + }, + "r4":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r3": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp":{ + "local_as": "100", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "104.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r3": { + "dest_link": { + "r4": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "4::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r3": { + "dest_link": { + "r4": { + } + } + } + } + } + } + } + } + }, + "r5":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r1": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp":{ + "local_as": "500", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "105.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r5": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "5::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r5": { + } + } + } + } + } + } + } + } + }, + "r6":{ + "links":{ + "lo": {"ipv4": "auto", "ipv6": "auto", "type": "loopback"}, + "r1": {"ipv4":"auto", "ipv6":"auto"} + }, + "bgp":{ + "local_as": "600", + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + { + "network": "106.0.20.1/32", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r6": {} + } + } + } + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + { + "network": "6::1/128", + "no_of_network": 5 + } + ], + "neighbor": { + "r1": { + "dest_link": { + "r6": { + } + } + } + } + } + } + } + } + } + } +} diff --git a/tests/topotests/bgp_gr_functionality_topo2/test_bgp_gr_functionality_topo2.py b/tests/topotests/bgp_gr_functionality_topo2/test_bgp_gr_functionality_topo2.py new file mode 100755 index 0000000000..83a04f491f --- /dev/null +++ b/tests/topotests/bgp_gr_functionality_topo2/test_bgp_gr_functionality_topo2.py @@ -0,0 +1,3085 @@ +#!/usr/bin/env python +# +# Copyright (c) 2019 by VMware, Inc. ("VMware") +# Used Copyright (c) 2018 by Network Device Education Foundation, Inc. ("NetDEF") +# in this file. +# +# Permission to use, copy, modify, and/or distribute this software +# for any purpose with or without fee is hereby granted, provided +# that the above copyright notice and this permission notice appear +# in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY +# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS +# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +# OF THIS SOFTWARE. +# + +""" +Following tests are covered to test BGP Graceful Restart functionality. +Basic Common Test steps for all the test case below : +- Create topology (setup module) + Creating 7 routers topology +- Bring up topology +- Verify for bgp to converge +- Configure BGP Graceful Restart on both the routers. + +TC_1_2: + Verify that EOR message is sent out only after initial convergence + Verify whether EOR message is received from all the peers after restart +TC_3: + Verify the selection deferral timer functionality when EOR is not sent + by the helper router +TC_11: + Verify that selection-deferral timer sets the maximum time to + avoid deadlock during which the best-path +TC_10: + Test Objective : Test GR scenarios on helper router by enabling + Graceful Restart for multiple address families. +TC_15: + Test Objective : Test GR scenarios by enabling Graceful Restart + for multiple address families.. +TC_16: + Test Objective : Verify BGP-GR feature when restarting node + is a transit router for it's iBGP peers. +TC_18: + Test Objective : Verify that GR helper router deletes stale routes + received from restarting node, if GR capability is not present in +TC_19: + Test Objective : Verify that GR routers keeps all the routes + received from restarting node if both the routers are +TC_26: + Test Objective : Test GR scenarios on helper router by enabling + Graceful Restart for multiple address families. +TC_28: + Test Objective : Verify if helper node goes down before restarting + node comes up online, helper node sets the R-bit to avoid dead-lock +TC_29: + Test Objective : Change timers on the fly, and + verify if it takes immediate effect. +TC_33: + Test Objective : Helper router receives same prefixes from two + different routers (GR-restarting and GR-disabled). Keeps the +TC_34_1: + Test Objective : Restarting node doesn't preserve forwarding + state, helper router should not keep the stale entries. +TC_34_2: + Test Objective : Restarting node doesn't preserve the forwarding + state verify the behaviour on helper node, if it still keeps the +TC_32: + Test Objective : Restarting node is connected to multiple helper + nodes, one of them doesn't send EOR to restarting router. Verify +TC_37: + Test Objective : Verify if helper node restarts before sending the + EOR message, restarting node doesn't wait until stale path timer +TC_30: + Test Objective : Restarting node removes stale routes from Zebra + after receiving an EOR from helper router. + +""" + +import os +import sys +import json +import time +import pytest +from time import sleep +from copy import deepcopy + +# Save the Current Working Directory to find configuration files. +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join("../")) +sys.path.append(os.path.join("../lib/")) + +# 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 + +# Required to instantiate the topology builder class. +from mininet.topo import Topo + +# Import topoJson from lib, to create topology and initial configuration +from lib.topojson import build_topo_from_json, build_config_from_json +from lib.bgp import ( + clear_bgp, + verify_bgp_rib, + verify_graceful_restart, + create_router_bgp, + verify_r_bit, + verify_eor, + verify_f_bit, + verify_bgp_convergence, + verify_gr_address_family, + modify_bgp_config_when_bgpd_down, + verify_graceful_restart_timers, +) + +from lib.common_config import ( + write_test_header, + reset_config_on_routers, + start_topology, + kill_router_daemons, + start_router_daemons, + verify_rib, + check_address_types, + write_test_footer, + check_router_status, + shutdown_bringup_interface, + step, + kill_mininet_routers_process, + get_frr_ipv6_linklocal, + create_route_maps, +) + +# Reading the data from JSON File for topology and configuration creation +jsonFile = "{}/bgp_gr_topojson_topo2.json".format(CWD) +try: + with open(jsonFile, "r") as topoJson: + topo = json.load(topoJson) +except IOError: + logger.info("Could not read file:", jsonFile) + +# Global variables +BGP_CONVERGENCE = False +GR_RESTART_TIMER = 5 +GR_SELECT_DEFER_TIMER = 5 +PREFERRED_NEXT_HOP = "link_local" +NEXT_HOP_4 = ["192.168.1.1", "192.168.4.2"] +NEXT_HOP_6 = ["fd00:0:0:1::1", "fd00:0:0:4::2"] + + +class GenerateTopo(Topo): + """ + Test topology builder + + * `Topo`: Topology object + """ + + def build(self, *_args, **_opts): + "Build function" + tgen = get_topogen(self) + + # This function only purpose is to create topology + # as defined in input json file. + # + # Create topology (setup module) + # Creating 2 routers topology, r1, r2in IBGP + # Bring up topology + + # Building topology from json file + build_topo_from_json(tgen, topo) + + +def setup_module(mod): + """ + Sets up the pytest environment + + * `mod`: module name + """ + + global ADDR_TYPES + + testsuite_run_time = time.asctime(time.localtime(time.time())) + logger.info("Testsuite start time: {}".format(testsuite_run_time)) + logger.info("=" * 40) + + logger.info("Running setup_module to create topology") + + # This function initiates the topology build with Topogen... + tgen = Topogen(GenerateTopo, mod.__name__) + # ... and here it calls Mininet initialization functions. + + # Starting topology, create tmp files which are loaded to routers + # to start deamons and then start routers + start_topology(tgen) + + # Creating configuration from JSON + build_config_from_json(tgen, topo) + + # Api call verify whether BGP is converged + ADDR_TYPES = check_address_types() + + for addr_type in ADDR_TYPES: + BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) + assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error:" " {}".format( + BGP_CONVERGENCE + ) + + logger.info("Running setup_module() done") + + +def teardown_module(mod): + """ + Teardown the pytest environment + + * `mod`: module name + """ + + logger.info("Running teardown_module to delete topology") + + tgen = get_topogen() + + # Stop toplogy and Remove tmp files + tgen.stop_topology() + + logger.info( + "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) + ) + logger.info("=" * 40) + + +def configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut, peer): + """ + This function groups the repetitive function calls into one function. + """ + + result = create_router_bgp(tgen, topo, input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + for addr_type in ADDR_TYPES: + clear_bgp(tgen, addr_type, dut) + + return True + + +def next_hop_per_address_family(tgen, dut, peer, addr_type, next_hop_dict): + """ + This function returns link_local or global next_hop per address-family + """ + + intferface = topo["routers"][peer]["links"]["{}-link1".format(dut)]["interface"] + if addr_type == "ipv6" and "link_local" in PREFERRED_NEXT_HOP: + next_hop = get_frr_ipv6_linklocal(tgen, peer, intf=intferface) + else: + next_hop = next_hop_dict[addr_type] + + return next_hop + + +def test_BGP_GR_TC_1_2_p0(request): + """ + Verify that EOR message is sent out only after initial convergence + Verify whether EOR message is received from all the peers after restart + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "Verify EOR Sent and Received : BGP_GR_TC_1_2 >> " + "BGP GR [Helper Mode]R3-----R1[Restart Mode] " + ) + + # Configure graceful-restart + input_dict = { + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + "r1": { + "bgp": { + "graceful-restart": { + "graceful-restart": True, + "preserve-fw-state": True, + }, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes received from router R3 + dut = "r1" + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("R1 goes for reload") + kill_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying RIB routes + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("Starting bgpd process") + start_router_daemons(tgen, "r1", ["bgpd"]) + logger.info("R1 is UP Now") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes received from router R3 + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying EOR on restarting router + result = verify_eor(tgen, topo, addr_type, input_dict, dut="r3", peer="r1") + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_TC_3_p0(request): + """ + Verify the selection deferral timer functionality when EOR is not sent + by the helper router + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Verify route download to RIB: BGP_GR_TC_3 >> " + "BGP GR [Helper Mode]R1-----R2[Restart Mode] " + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "graceful-restart": {"disable-eor": True,}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r2": { + "dest_link": { + "r1": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r2": { + "dest_link": { + "r1": {"graceful-restart-helper": True} + } + } + } + } + }, + }, + } + }, + "r2": { + "bgp": { + "graceful-restart": { + "graceful-restart": True, + "preserve-fw-state": True, + "timer": {"select-defer-time": GR_SELECT_DEFER_TIMER}, + }, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": {"dest_link": {"r2": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": {"dest_link": {"r2": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r2" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes received from router R1 + dut = "r2" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("R2 goes for reload ") + kill_router_daemons(tgen, "r2", ["bgpd"]) + + logger.info("R2 is about to come up now") + start_router_daemons(tgen, "r2", ["bgpd"]) + logger.info("R2 is UP Now") + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes received from router R1 + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verify EOR on restarting router + result = verify_eor( + tgen, topo, addr_type, input_dict, dut="r2", peer="r1", expected=False + ) + assert result is not True, ( + "Testcase " + tc_name + " : Failed \n Error: {}".format(result) + ) + + logger.info( + "Waiting for selection deferral timer({} sec)..".format(GR_SELECT_DEFER_TIMER) + ) + sleep(GR_SELECT_DEFER_TIMER) + + for addr_type in ADDR_TYPES: + # Verifying RIB routes + result = verify_rib(tgen, addr_type, "r2", input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_TC_11_p0(request): + """ + Verify that selection-deferral timer sets the maximum time to + avoid deadlock during which the best-path + selection process is deferred, after a peer session was restarted + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info("Verify EOR Sent after deferral timeout : BGP_GR_TC_11") + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "graceful-restart": { + "graceful-restart": True, + "select-defer-time": GR_SELECT_DEFER_TIMER, + }, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}}, + "r3": {"dest_link": {"r1": {"graceful-restart": True}}}, + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}}, + "r3": {"dest_link": {"r1": {"graceful-restart": True}}}, + } + } + }, + }, + } + }, + "r3": { + "bgp": { + "graceful-restart": {"disable-eor": True}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + }, + } + }, + } + + result = create_router_bgp(tgen, topo, input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + for addr_type in ADDR_TYPES: + clear_bgp(tgen, addr_type, "r1") + clear_bgp(tgen, addr_type, "r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes received from router R1 + dut = "r1" + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("R1 goes for reload") + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("Starting bgpd process") + start_router_daemons(tgen, "r1", ["bgpd"]) + logger.info("R1 is UP Now") + + for addr_type in ADDR_TYPES: + # Verify EOR on restarting router + result = verify_eor( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3", expected=False + ) + assert result is not True, ( + "Testcase " + tc_name + " : Failed \n Error: {}".format(result) + ) + + logger.info( + "Waiting for selection deferral timer({} sec).. ".format( + GR_SELECT_DEFER_TIMER + 2 + ) + ) + sleep(GR_SELECT_DEFER_TIMER + 2) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes received from router R1 + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying EOR on restarting router + result = verify_eor( + tgen, topo, addr_type, input_dict, dut="r3", peer="r1", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_10_p2(request): + """ + Test Objective : Test GR scenarios on helper router by enabling + Graceful Restart for multiple address families. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] initialized" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "next_hop_self": True, + "graceful-restart": True, + "activate": "ipv6", + } + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "next_hop_self": True, + "graceful-restart": True, + "activate": "ipv4", + } + } + } + } + } + }, + } + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": { + "graceful-restart-helper": True, + "activate": "ipv6", + } + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": { + "graceful-restart-helper": True, + "activate": "ipv4", + } + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + dut = "r3" + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv4Unicast", dut="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv6Unicast", dut="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv4Unicast", dut="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv6Unicast", dut="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_16_p2(request): + """ + Test Objective : Verify BGP-GR feature when restarting node + is a transit router for it's iBGP peers. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] initialized" + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "graceful-restart": True, + "next_hop_self": True, + } + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "graceful-restart": True, + "next_hop_self": True, + } + } + } + } + } + }, + } + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info( + "[Step 2] : Test Setup " + "[Helper Mode]R3-----R1[Restart Mode]" + "--------R6[Helper Mode] initialized" + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r2": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r2": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r2": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r2" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + dut = "r3" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + result = verify_bgp_convergence(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_18_p1(request): + """ + Test Objective : Verify that GR helper router deletes stale routes + received from restarting node, if GR capability is not present in + restarting node's OPEN message. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "[Step 1] : Test Setup " "[Helper Mode]R6-----R1[Restart Mode] initialized" + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r6": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r6": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r6": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r6": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r6": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r6") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r6" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info( + "[Step 2] : Test Setup " + "[Helper Mode]R6-----R1[Restart Mode]" + "--------R2[Helper Mode] initialized" + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r2": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r2": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r2": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r2": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r2" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + dut = "r6" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + dut = "r2" + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 3] : Configure R1 to prevent sending EOR") + + # Modify graceful-restart config to prevent sending EOR + input_dict_3 = {"r1": {"bgp": {"graceful-restart": {"disable-eor": True}}}} + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) + + # Modify configuration to delete routes + network = {"ipv4": "101.0.20.1/32", "ipv6": "1::1/128"} + for addr_type in ADDR_TYPES: + input_dict_3 = { + "r1": { + "bgp": { + "address_family": { + addr_type: { + "unicast": { + "advertise_networks": [ + { + "network": network[addr_type], + "no_of_network": 5, + "delete": True, + } + ] + } + } + } + } + } + } + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Modify graceful-restart config + input_dict_3 = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r2": { + "dest_link": { + "r1": {"graceful-restart-disable": True} + } + }, + "r6": { + "dest_link": { + "r1": {"graceful-restart-disable": True} + } + }, + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r2": { + "dest_link": { + "r1": {"graceful-restart-disable": True} + } + }, + "r6": { + "dest_link": { + "r1": {"graceful-restart-disable": True} + } + }, + } + } + }, + } + } + } + } + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) + assert result is True, "Testcase {} : Failed \n Error {}".format(tc_name, result) + + logger.info("[Step 4] : Bring up the BGPd daemon on R1 for 30" " seconds..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + dut = "r6" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying BGP RIB routes + dut = "r2" + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + write_test_footer(tc_name) + + +def test_BGP_GR_26_p2(request): + """ + Test Objective : Test GR scenarios on helper router by enabling + Graceful Restart for multiple address families. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] initialized" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "graceful-restart": True, + "next_hop_self": True, + "activate": "ipv6", + } + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r1": { + "graceful-restart": True, + "next_hop_self": True, + "activate": "ipv4", + } + } + } + } + } + }, + } + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": { + "graceful-restart-helper": True, + "activate": "ipv6", + } + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": { + "graceful-restart-helper": True, + "activate": "ipv4", + } + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r3", peer="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes + dut = "r3" + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_topo = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_topo) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv4Unicast", dut="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv6Unicast", dut="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv4Unicast", dut="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # verify multi address family + result = verify_gr_address_family( + tgen, topo, addr_type, "ipv6Unicast", dut="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_28_p1(request): + """ + Test Objective : Verify if helper node goes down before restarting + node comes up online, helper node sets the R-bit to avoid dead-lock + till SDT expiry. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + "Test Case: test_BGP_GR_chaos_28 :" + "[Helper Mode]R3-----R1[Restart Mode] initialized" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 1] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 2] : Kill BGPd daemon on R3..") + + # Kill BGPd daemon on R3 + kill_router_daemons(tgen, "r3", ["bgpd"]) + + logger.info("[Step 3] : Start BGPd daemon on R1..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 4] : Start BGPd daemon on R3..") + + # Start BGPd daemon on R3 + start_router_daemons(tgen, "r3", ["bgpd"]) + + # Verify r_bit + for addr_type in ADDR_TYPES: + result = verify_r_bit(tgen, topo, addr_type, input_dict, dut="r3", peer="r1") + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_29_p1(request): + """ + Test Objective : Change timers on the fly, and + verify if it takes immediate effect. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : BGP_GR_UTP_29" + " BGP GR [Helper Mode]R3-----R1[Restart Mode]" + " and [restart-time 150]R1 initialized" + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER}}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verify graceful-restart timers + input_dict_2 = { + "r1": { + "bgp": { + "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER + 5}} + } + } + } + + result = create_router_bgp(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + for addr_type in ADDR_TYPES: + input_dict_2 = { + "r1": { + "bgp": { + "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER}} + } + } + } + + result = verify_graceful_restart_timers( + tgen, topo, addr_type, input_dict_2, dut="r3", peer="r1" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes before shutting down BGPd daemon + dut = "r3" + input_dict = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 2] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + # Waiting for 120 sec + logger.info("[Step 3] : Wait for {} seconds..".format(GR_RESTART_TIMER)) + + # Waiting for 120 sec + sleep(GR_RESTART_TIMER) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes before shutting down BGPd daemon + input_dict = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + logger.info("[Step 4] : Start BGPd daemon on R1..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_33_p1(request): + """ + Test Objective : Helper router receives same prefixes from two + different routers (GR-restarting and GR-disabled). Keeps the + stale entry only for GR-restarting node(next-hop is correct). + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_33 " + "BGP GR " + "[Restart Mode]R1--R3[Helper Mode]--R4[Disabled Mode]" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + "r4": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r4": {"graceful-restart-disable": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": { + "dest_link": { + "r4": {"graceful-restart-disable": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 2] : Advertise same networks from R1 and R4..") + + # Api call to delete advertised networks + input_dict_2 = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + {"network": "200.0.20.1/32", "no_of_network": 2,} + ] + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + {"network": "2001::1/128", "no_of_network": 2} + ] + } + }, + } + } + }, + "r4": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "advertise_networks": [ + {"network": "200.0.20.1/32", "no_of_network": 2} + ] + } + }, + "ipv6": { + "unicast": { + "advertise_networks": [ + {"network": "2001::1/128", "no_of_network": 2} + ] + } + }, + } + } + }, + } + + result = create_router_bgp(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + for addr_type in ADDR_TYPES: + # Verifying RIB routes + dut = "r3" + peer1 = "r1" + peer2 = "r4" + intf1 = topo["routers"][peer1]["links"][dut]["interface"] + intf2 = topo["routers"][peer2]["links"][dut]["interface"] + + if addr_type == "ipv4": + next_hop_4 = NEXT_HOP_4 + result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_4) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + if addr_type == "ipv6": + if "link_local" in PREFERRED_NEXT_HOP: + next_hop1 = get_frr_ipv6_linklocal(tgen, peer1, intf=intf1) + next_hop2 = get_frr_ipv6_linklocal(tgen, peer2, intf=intf2) + + next_hop_6 = [next_hop1, next_hop2] + else: + next_hop_6 = NEXT_HOP_6 + + result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_6) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 3] : Kill BGPd daemon on R1 and R4..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + # Kill BGPd daemon on R4 + kill_router_daemons(tgen, "r4", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying RIB routes + next_hop_6 = ["fd00:0:0:1::1"] + if addr_type == "ipv4": + next_hop_4 = NEXT_HOP_4[0] + + result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_4) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + if addr_type == "ipv6": + if "link_local" in PREFERRED_NEXT_HOP: + next_hop_6 = get_frr_ipv6_linklocal(tgen, peer1, intf=intf1) + else: + next_hop_6 = NEXT_HOP_6[0] + + result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_6) + + # Verifying RIB routes + if addr_type == "ipv4": + next_hop_4 = NEXT_HOP_4[1] + result = verify_rib( + tgen, addr_type, dut, input_dict_2, next_hop_4, expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + if addr_type == "ipv6": + if "link_local" in PREFERRED_NEXT_HOP: + next_hop_6 = get_frr_ipv6_linklocal(tgen, peer2, intf=intf2) + else: + next_hop_6 = NEXT_HOP_6[1] + + result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_6) + + logger.info("[Step 4] : Start BGPd daemon on R1 and R4..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + # Start BGPd daemon on R4 + start_router_daemons(tgen, "r4", ["bgpd"]) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_34_2_p1(request): + """ + Test Objective : Restarting node doesn't preserve the forwarding + state verify the behaviour on helper node, if it still keeps the + stale routes. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_34 " + "BGP GR " + "[Restart Mode]R1---R3[Helper Mode]" + ) + + logger.info("[Step 1] : Configure restarting" " router R1 to prevent ") + logger.info("[Step 2] : Reset the session" " between R1 and R3..") + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "graceful-restart": {"preserve-fw-state": True, "disable-eor": True}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verify f-bit before killing BGPd daemon + result = verify_f_bit(tgen, topo, addr_type, input_dict, "r3", "r1") + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes after starting BGPd daemon + dut = "r3" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 3] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 4] : Withdraw/delete the prefixes " "originated from R1..") + + # Api call to delete advertised networks + network = {"ipv4": "101.0.20.1/32", "ipv6": "1::1/128"} + for addr_type in ADDR_TYPES: + input_dict_2 = { + "r1": { + "bgp": { + "address_family": { + addr_type: { + "unicast": { + "advertise_networks": [ + { + "network": network[addr_type], + "no_of_network": 5, + "delete": True, + } + ] + } + } + } + } + } + } + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 5] : Remove the CLI from R1's config to " "set the F-bit..") + + # Modify graceful-restart config not to set f-bit + # and write to /etc/frr + input_dict_2 = {"r1": {"bgp": {"graceful-restart": {"preserve-fw-state": False}}}} + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format(tc_name, result) + + logger.info("[Step 6] : Bring up the BGPd daemon on R1 again..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verify f-bit after starting BGPd daemon + result = verify_f_bit( + tgen, topo, addr_type, input_dict, "r3", "r1", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying BGP RIB routes after starting BGPd daemon + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_34_1_p1(request): + """ + Test Objective : Restarting node doesn't preserve forwarding + state, helper router should not keep the stale entries. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_31 " + "BGP GR " + "[Restart Mode]R1---R3[Helper Mode]" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "graceful-restart": { + "preserve-fw-state": True, + "timer": {"restart-time": GR_RESTART_TIMER}, + }, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes after starting BGPd daemon + dut = "r3" + input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info( + "[Step 1] : Remove the preserve-fw-state command" + " from restarting node R1's config" + ) + + # Configure graceful-restart to set f-bit as False + input_dict_2 = {"r1": {"bgp": {"graceful-restart": {"preserve-fw-state": False}}}} + + result = create_router_bgp(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + logger.info("[Step 2] : Reset the session between R1 and R3..") + + # Reset sessions + for addr_type in ADDR_TYPES: + clear_bgp(tgen, addr_type, "r1") + + for addr_type in ADDR_TYPES: + # Verify f-bit after starting BGPd daemon + result = verify_f_bit( + tgen, topo, addr_type, input_dict_2, "r3", "r1", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + logger.info("[Step 3] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + # Waiting for 120 sec + logger.info("Waiting for {} sec..".format(GR_RESTART_TIMER)) + sleep(GR_RESTART_TIMER) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes + input_dict = {key: topo["routers"][key] for key in ["r1"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_32_p1(request): + """ + Test Objective : Restarting node is connected to multiple helper + nodes, one of them doesn't send EOR to restarting router. Verify + that only after SDT restarting node send EOR to all helper peers + excluding the prefixes originated by faulty router. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_32 " + "BGP GR " + "[Restart Mode]R1---R3&R5[Helper Mode]" + ) + + logger.info( + "[Step 1] : Change the mode on R1 be a restarting" " node on global level" + ) + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "graceful-restart": {"graceful-restart": True}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"next_hop_self": True}}}, + "r5": {"dest_link": {"r1": {"graceful-restart": True}}}, + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"next_hop_self": True}}}, + "r5": {"dest_link": {"r1": {"graceful-restart": True}}}, + } + } + }, + }, + } + }, + "r5": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r5": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r5": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r5") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r5" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying BGP RIB routes after starting BGPd daemon + dut = "r3" + input_dict_1 = {key: topo["routers"][key] for key in ["r5"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 2] : Kill BGPd daemon on R1..") + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 3] : Withdraw all the advertised prefixes from R5") + + # Api call to delete advertised networks + network = {"ipv4": "105.0.20.1/32", "ipv6": "5::1/128"} + for addr_type in ADDR_TYPES: + input_dict_2 = { + "r5": { + "bgp": { + "address_family": { + addr_type: { + "unicast": { + "advertise_networks": [ + { + "network": network[addr_type], + "no_of_network": 5, + "delete": True, + } + ] + } + } + } + } + } + } + + result = create_router_bgp(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error: {}".format( + tc_name, result + ) + + logger.info( + "[Step 4] : Stop the helper router R5 from sending EOR" " message using CLI" + ) + + # Modify graceful-restart config to prevent sending EOR + input_dict_3 = {"r5": {"bgp": {"graceful-restart": {"disable-eor": True}}}} + + result = create_router_bgp(tgen, topo, input_dict_3) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + logger.info("[Step 5] : Bring up the BGPd daemon on R1..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verify EOR is disabled + result = verify_eor( + tgen, topo, addr_type, input_dict_3, dut="r5", peer="r1", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying BGP RIB routes after starting BGPd daemon + input_dict_1 = {key: topo["routers"][key] for key in ["r5"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_37_p1(request): + """ + Test Objective : Verify if helper node restarts before sending the + EOR message, restarting node doesn't wait until stale path timer + expiry to do the best path selection and sends an EOR + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_37 " + "BGP GR " + "[Restart Mode]R1---R3[Helper Mode]" + ) + + logger.info( + "[Step 1] : Configure restarting router R3 to prevent " "sending an EOR.." + ) + + logger.info("[Step 2] : Reset the session between R3 and R1..") + + # Configure graceful-restart + input_dict = { + "r1": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + } + } + }, + "r3": { + "bgp": { + "graceful-restart": {"disable-eor": True}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + }, + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verify EOR is disabled + result = verify_eor( + tgen, topo, addr_type, input_dict, dut="r3", peer="r1", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying BGP RIB routes after starting BGPd daemon + dut = "r1" + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 3] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 4] : Start BGPd daemon on R1..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 5] : Kill BGPd daemon on R3..") + + # Kill BGPd daemon on R3 + kill_router_daemons(tgen, "r3", ["bgpd"]) + + # Modify graceful-restart config to prevent sending EOR + input_dict_2 = {"r3": {"bgp": {"graceful-restart": {"disable-eor": True}}}} + + result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_2) + assert result is True, "Testcase {} : Failed \n Error {}".format(tc_name, result) + + logger.info("[Step 6] : Start BGPd daemon on R3..") + + # Start BGPd daemon on R3 + start_router_daemons(tgen, "r3", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verify r_bit + result = verify_r_bit(tgen, topo, addr_type, input_dict, dut="r1", peer="r3") + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes + input_dict_1 = {key: topo["routers"][key] for key in ["r3"]} + result = verify_rib(tgen, addr_type, dut, input_dict_1) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verify EOR is send from R1 to R3 + input_dict_3 = {"r1": {"bgp": {"graceful-restart": {"disable-eor": True}}}} + + result = verify_eor( + tgen, topo, addr_type, input_dict_3, dut="r1", peer="r3", expected=False + ) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + write_test_footer(tc_name) + + +def test_BGP_GR_chaos_30_p1(request): + """ + Test Objective : Restarting node removes stale routes from Zebra + after receiving an EOR from helper router. + """ + + tgen = get_topogen() + tc_name = request.node.name + write_test_header(tc_name) + + # Check router status + check_router_status(tgen) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + # Creating configuration from JSON + reset_config_on_routers(tgen) + + logger.info( + " Test Case : test_BGP_GR_chaos_30 " + "BGP GR [Helper Mode]R3-----R1[Restart Mode] " + ) + + # Configure graceful-restart and timers + input_dict = { + "r1": { + "bgp": { + "graceful-restart": {"preserve-fw-state": True}, + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r3": {"dest_link": {"r1": {"graceful-restart": True}}} + } + } + }, + }, + } + }, + "r3": { + "bgp": { + "address_family": { + "ipv4": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + "ipv6": { + "unicast": { + "neighbor": { + "r1": { + "dest_link": { + "r3": {"graceful-restart-helper": True} + } + } + } + } + }, + } + } + }, + } + + configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") + + for addr_type in ADDR_TYPES: + result = verify_graceful_restart( + tgen, topo, addr_type, input_dict, dut="r1", peer="r3" + ) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes before shutting down BGPd daemon + dut = "r1" + input_dict = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict) + assert result is True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + + logger.info("[Step 2] : Kill BGPd daemon on R1..") + + # Kill BGPd daemon on R1 + kill_router_daemons(tgen, "r1", ["bgpd"]) + + logger.info("[Step 3] : Withdraw advertised prefixes from R3...") + + # Api call to delete advertised networks + network = {"ipv4": "103.0.20.1/32", "ipv6": "3::1/128"} + for addr_type in ADDR_TYPES: + input_dict = { + "r3": { + "bgp": { + "address_family": { + addr_type: { + "unicast": { + "advertise_networks": [ + { + "network": network[addr_type], + "no_of_network": 5, + "delete": True, + } + ] + } + } + } + } + } + } + + result = create_router_bgp(tgen, topo, input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format( + tc_name, result + ) + + logger.info("[Step 4] : Start BGPd daemon on R1..") + + # Start BGPd daemon on R1 + start_router_daemons(tgen, "r1", ["bgpd"]) + + for addr_type in ADDR_TYPES: + # Verifying BGP RIB routes before shutting down BGPd daemon + input_dict = {key: topo["routers"][key] for key in ["r3"]} + result = verify_bgp_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + # Verifying RIB routes before shutting down BGPd daemon + result = verify_rib(tgen, addr_type, dut, input_dict, expected=False) + assert result is not True, "Testcase {} : Failed \n Error {}".format( + tc_name, result + ) + logger.info(" Expected behavior: {}".format(result)) + + write_test_footer(tc_name) + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) -- 2.39.5