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Diffstat (limited to 'tests/topotests/ospf_basic_functionality/test_ospf_single_area.py')
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1 files changed, 1015 insertions, 0 deletions
diff --git a/tests/topotests/ospf_basic_functionality/test_ospf_single_area.py b/tests/topotests/ospf_basic_functionality/test_ospf_single_area.py new file mode 100644 index 0000000..21a7d83 --- /dev/null +++ b/tests/topotests/ospf_basic_functionality/test_ospf_single_area.py @@ -0,0 +1,1015 @@ +#!/usr/bin/python + +# +# Copyright (c) 2020 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. +# + + +"""OSPF Basic Functionality Automation.""" +import os +import sys +import time +import pytest +from copy import deepcopy +from ipaddress import IPv4Address +from lib.topotest import frr_unicode + +# Save the Current Working Directory to find configuration files. +CWD = os.path.dirname(os.path.realpath(__file__)) +sys.path.append(os.path.join(CWD, "../")) +sys.path.append(os.path.join(CWD, "../lib/")) + +# pylint: disable=C0413 +# Import topogen and topotest helpers +from lib.topogen import Topogen, get_topogen +import ipaddress + +# Import topoJson from lib, to create topology and initial configuration +from lib.common_config import ( + start_topology, + write_test_header, + write_test_footer, + reset_config_on_routers, + step, + create_interfaces_cfg, + topo_daemons, +) +from lib.topolog import logger +from lib.topojson import build_config_from_json + +from lib.ospf import ( + verify_ospf_neighbor, + config_ospf_interface, + clear_ospf, + verify_ospf_rib, + verify_ospf_interface, +) + +pytestmark = [pytest.mark.ospfd, pytest.mark.staticd] +# Global variables +topo = None + + +""" +TOPOOLOGY = + Please view in a fixed-width font such as Courier. + +---+ A1 +---+ + +R1 +------------+R2 | + +-+-+- +--++ + | -- -- | + | -- A0 -- | + A0| ---- | + | ---- | A2 + | -- -- | + | -- -- | + +-+-+- +-+-+ + +R0 +-------------+R3 | + +---+ A3 +---+ + +TESTCASES = +1. OSPF IFSM -Verify state change events on p2p network. +2. OSPF Timers - Verify OSPF interface timer hello interval functionality +3. OSPF Timers - Verify OSPF interface timer dead interval functionality +4. Verify ospf show commands with json output. +5. Verify NFSM events when ospf nbr changes with different MTU values. + """ + + +def setup_module(mod): + """ + Sets up the pytest environment + + * `mod`: module name + """ + 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... + json_file = "{}/ospf_single_area.json".format(CWD) + tgen = Topogen(json_file, mod.__name__) + global topo + topo = tgen.json_topo + # ... and here it calls Mininet initialization functions. + + # get list of daemons needs to be started for this suite. + daemons = topo_daemons(tgen, topo) + + # Starting topology, create tmp files which are loaded to routers + # to start daemons and then start routers + start_topology(tgen, daemons) + + # Creating configuration from JSON + build_config_from_json(tgen, topo) + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + ospf_covergence = verify_ospf_neighbor(tgen, topo) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + 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) + + +# ################################## +# Test cases start here. +# ################################## + + +def test_ospf_p2p_tc3_p0(request): + """OSPF IFSM -Verify state change events on p2p network.""" + tc_name = request.node.name + write_test_header(tc_name) + tgen = get_topogen() + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + global topo + step("Bring up the base config as per the topology") + reset_config_on_routers(tgen) + step( + "Verify that OSPF is subscribed to multi cast services " + "(All SPF, all DR Routers)." + ) + step("Verify that interface is enabled in ospf.") + step("Verify that config is successful.") + dut = "r0" + input_dict = { + "r0": { + "links": { + "r3": {"ospf": {"mcastMemberOspfAllRouters": True, "ospfEnabled": True}} + } + } + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("Delete the ip address") + topo1 = { + "r0": { + "links": { + "r3": { + "ipv4": topo["routers"]["r0"]["links"]["r3"]["ipv4"], + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("Change the ip on the R0 interface") + + topo_modify_change_ip = deepcopy(topo) + intf_ip = topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] + topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] = str( + IPv4Address(frr_unicode(intf_ip.split("/")[0])) + 3 + ) + "/{}".format(intf_ip.split("/")[1]) + + build_config_from_json(tgen, topo_modify_change_ip, save_bkup=False) + step("Verify that interface is enabled in ospf.") + dut = "r0" + input_dict = { + "r0": { + "links": { + "r3": { + "ospf": { + "ipAddress": topo_modify_change_ip["routers"]["r0"]["links"][ + "r3" + ]["ipv4"].split("/")[0], + "ipAddressPrefixlen": int( + topo_modify_change_ip["routers"]["r0"]["links"]["r3"][ + "ipv4" + ].split("/")[1] + ), + } + } + } + } + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("Modify the mask on the R0 interface") + ip_addr = topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] + mask = topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] + step("Delete the ip address") + topo1 = { + "r0": { + "links": { + "r3": { + "ipv4": ip_addr, + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("Change the ip on the R0 interface") + + topo_modify_change_ip = deepcopy(topo) + intf_ip = topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] + topo_modify_change_ip["routers"]["r0"]["links"]["r3"]["ipv4"] = str( + IPv4Address(frr_unicode(intf_ip.split("/")[0])) + 3 + ) + "/{}".format(int(intf_ip.split("/")[1]) + 1) + + build_config_from_json(tgen, topo_modify_change_ip, save_bkup=False) + step("Verify that interface is enabled in ospf.") + dut = "r0" + input_dict = { + "r0": { + "links": { + "r3": { + "ospf": { + "ipAddress": topo_modify_change_ip["routers"]["r0"]["links"][ + "r3" + ]["ipv4"].split("/")[0], + "ipAddressPrefixlen": int( + topo_modify_change_ip["routers"]["r0"]["links"]["r3"][ + "ipv4" + ].split("/")[1] + ), + } + } + } + } + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r0": { + "links": { + "r3": { + "ipv4": topo_modify_change_ip["routers"]["r0"]["links"]["r3"][ + "ipv4" + ], + "interface": topo_modify_change_ip["routers"]["r0"]["links"]["r3"][ + "interface" + ], + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + build_config_from_json(tgen, topo, save_bkup=False) + + step("Change the area id on the interface") + input_dict = { + "r0": { + "links": { + "r3": { + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "ospf": {"area": "0.0.0.0"}, + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, input_dict) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + input_dict = { + "r0": { + "links": { + "r3": { + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "ospf": {"area": "0.0.0.1"}, + } + } + } + } + + result = create_interfaces_cfg(tgen, input_dict) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + step("Verify that interface is enabled in ospf.") + dut = "r0" + input_dict = { + "r0": {"links": {"r3": {"ospf": {"area": "0.0.0.1", "ospfEnabled": True}}}} + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + input_dict = { + "r0": { + "links": { + "r3": { + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "ospf": {"area": "0.0.0.1"}, + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, input_dict) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + input_dict = { + "r0": { + "links": { + "r3": { + "interface": topo["routers"]["r0"]["links"]["r3"]["interface"], + "ospf": {"area": "0.0.0.0"}, + } + } + } + } + + result = create_interfaces_cfg(tgen, input_dict) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + # Api call verify whether BGP is converged + ospf_covergence = verify_ospf_neighbor(tgen, topo) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + write_test_footer(tc_name) + + +def test_ospf_hello_tc10_p0(request): + """ + OSPF timers. + + Verify OSPF interface timer hello interval functionality + """ + tc_name = request.node.name + write_test_header(tc_name) + tgen = get_topogen() + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + global topo + step("Bring up the base config as per the topology") + reset_config_on_routers(tgen) + + step("modify hello timer from default value to some other value on r1") + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"hello_interval": 11, "dead_interval": 12}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "verify that new timer value is configured and applied using " + "the show ip ospf interface command." + ) + dut = "r1" + input_dict = { + "r1": { + "links": {"r0": {"ospf": {"timerMsecs": 11 * 1000, "timerDeadSecs": 12}}} + } + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("modify hello timer from default value to r1 hello timer on r2") + + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"hello_interval": 11, "dead_interval": 12}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = { + "r0": { + "links": {"r1": {"ospf": {"timerMsecs": 11 * 1000, "timerDeadSecs": 12}}} + } + } + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step("reconfigure the default hello timer value to default on r1 and r2") + + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"hello_interval": 10, "dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"hello_interval": 10, "dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = { + "r0": { + "links": {"r1": {"ospf": {"timerMsecs": 10 * 1000, "timerDeadSecs": 40}}} + } + } + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step("reconfigure the default hello timer value to default on r1 and r2") + + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"hello_interval": 10, "dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"hello_interval": 10, "dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = { + "r0": { + "links": {"r1": {"ospf": {"timerMsecs": 10 * 1000, "timerDeadSecs": 40}}} + } + } + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step("configure hello timer = 1 on r1 and r2") + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"hello_interval": 1, "dead_interval": 4}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"hello_interval": 1, "dead_interval": 4}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = { + "r0": {"links": {"r1": {"ospf": {"timerMsecs": 1 * 1000, "timerDeadSecs": 4}}}} + } + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + write_test_footer(tc_name) + + +def test_ospf_show_p1(request): + """Verify ospf show commands with json output.""" + tc_name = request.node.name + write_test_header(tc_name) + tgen = get_topogen() + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + global topo + step(" Bring up the base config as per the topology") + reset_config_on_routers(tgen) + + ospf_covergence = verify_ospf_neighbor(tgen, topo) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + dut = "r1" + input_dict = { + "r1": { + "links": { + "r0": { + "ospf": { + "ifUp": True, + "ifFlags": "<UP,BROADCAST,RUNNING,MULTICAST>", + "ospfEnabled": True, + "ipAddressPrefixlen": 24, + "ospfIfType": "Broadcast", + "area": "0.0.0.0", + "networkType": "BROADCAST", + "cost": 10, + "transmitDelaySecs": 1, + "state": "DR", + "priority": 1, + "mcastMemberOspfAllRouters": True, + "timerMsecs": 1000, + "timerDeadSecs": 4, + "timerWaitSecs": 4, + "timerRetransmitSecs": 5, + "nbrCount": 1, + "nbrAdjacentCount": 1, + } + } + } + } + } + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + # show ip ospf route + ip = topo["routers"]["r0"]["links"]["r3"]["ipv4"] + ip_net = str(ipaddress.ip_interface(u"{}".format(ip)).network) + nh = topo["routers"]["r0"]["links"]["r1"]["ipv4"].split("/")[0] + input_dict = { + "r1": {"static_routes": [{"network": ip_net, "no_of_ip": 1, "routeType": "N"}]} + } + + dut = "r1" + result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + write_test_footer(tc_name) + + +def test_ospf_dead_tc11_p0(request): + """ + OSPF timers. + + Verify OSPF interface timer dead interval functionality + """ + tc_name = request.node.name + write_test_header(tc_name) + tgen = get_topogen() + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + global topo + step("Bring up the base config as per the topology") + reset_config_on_routers(tgen) + + step("modify dead interval from default value to some other value on r1") + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"hello_interval": 12, "dead_interval": 48}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "verify that new timer value is configured and applied using " + "the show ip ospf interface command." + ) + dut = "r1" + input_dict = {"r1": {"links": {"r0": {"ospf": {"timerDeadSecs": 48}}}}} + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("modify dead interval from default value to r1" "dead interval timer on r2") + + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"dead_interval": 48, "hello_interval": 12}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = {"r0": {"links": {"r1": {"ospf": {"timerDeadSecs": 48}}}}} + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step("reconfigure the default dead interval timer value to " "default on r1 and r2") + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"dead_interval": 40}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = {"r0": {"links": {"r1": {"ospf": {"timerDeadSecs": 40}}}}} + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step(" Configure dead timer = 65535 on r1 and r2") + + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"dead_interval": 65535}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"dead_interval": 65535}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that new timer value is configured.") + input_dict = {"r0": {"links": {"r1": {"ospf": {"timerDeadSecs": 65535}}}}} + dut = "r0" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("verify that ospf neighbours are full") + ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut) + assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( + ospf_covergence + ) + + step(" Try configuring timer values outside range for example 65536") + topo1 = { + "r0": { + "links": { + "r1": { + "interface": topo["routers"]["r0"]["links"]["r1"]["interface"], + "ospf": {"dead_interval": 65536}, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is not True, "Testcase {} : Failed \n Error: {}".format( + tc_name, result + ) + + step("Unconfigure the dead timer from the interface from r1 and r2.") + + topo1 = { + "r1": { + "links": { + "r0": { + "interface": topo["routers"]["r1"]["links"]["r0"]["interface"], + "ospf": {"dead_interval": 65535}, + "delete": True, + } + } + } + } + + result = create_interfaces_cfg(tgen, topo1) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Verify that timer value is deleted from intf & " "set to default value 40 sec." + ) + input_dict = {"r1": {"links": {"r0": {"ospf": {"timerDeadSecs": 40}}}}} + dut = "r1" + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + write_test_footer(tc_name) + + +def test_ospf_tc4_mtu_ignore_p0(request): + """ + OSPF NFSM - MTU change + + Verify NFSM events when ospf nbr changes with different MTU values + """ + tc_name = request.node.name + write_test_header(tc_name) + tgen = get_topogen() + + # Don't run this test if we have any failure. + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + global topo + step(" Bring up the base config as per the topology") + step("Configure OSPF on all the routers of the topology.") + step("Verify that OSPF neighbors are FULL.") + reset_config_on_routers(tgen) + result = verify_ospf_neighbor(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Modify the MTU to non default Value on R0 to R1 interface. " + "Reset ospf neighbors on R0." + ) + + rtr0 = tgen.routers()["r0"] + rtr1 = tgen.routers()["r1"] + + r0_r1_intf = topo["routers"]["r0"]["links"]["r1"]["interface"] + r1_r0_intf = topo["routers"]["r1"]["links"]["r0"]["interface"] + + rtr0.run("ip link set {} mtu 1200".format(r0_r1_intf)) + + clear_ospf(tgen, "r0") + + step( + "Verify that OSPF neighborship between R0 and R1 is stuck in Exstart" " State." + ) + result = verify_ospf_neighbor(tgen, topo, expected=False) + assert result is not True, ( + "Testcase {} : Failed \n OSPF nbrs are Full " + "instead of Exstart. Error: {}".format(tc_name, result) + ) + + step( + "Verify that configured MTU value is updated in the show ip " "ospf interface." + ) + + dut = "r0" + input_dict = {"r0": {"links": {"r1": {"ospf": {"mtuBytes": 1200}}}}} + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Modify the MTU to non default Value on R0 to R1 interface. " + "Reset ospf neighbors on R0." + ) + rtr0.run("ip link set {} mtu 1500".format(r0_r1_intf)) + + clear_ospf(tgen, "r0") + + step("Verify that OSPF neighborship between R0 and R1 becomes full.") + result = verify_ospf_neighbor(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Configure mtu ignore and change the value of the mtu to non default" + " on R0 to R1 interface. Reset ospf neighbors on R0." + ) + r0_ospf_mtu = {"r0": {"links": {"r1": {"ospf": {"mtu_ignore": True}}}}} + result = config_ospf_interface(tgen, topo, r0_ospf_mtu) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + dut = "r0" + input_dict = {"r0": {"links": {"r1": {"ospf": {"mtuMismatchDetect": True}}}}} + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + r1_ospf_mtu = {"r1": {"links": {"r0": {"ospf": {"mtu_ignore": True}}}}} + result = config_ospf_interface(tgen, topo, r1_ospf_mtu) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + rtr0.run("ip link set {} mtu 1200".format(r0_r1_intf)) + + clear_ospf(tgen, "r0") + + step("Verify that OSPF neighborship between R0 and R1 becomes full.") + result = verify_ospf_neighbor(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Unconfigure mtu-ignore command from the interface. " + "Reset ospf neighbors on R0." + ) + + r1_ospf_mtu = { + "r1": {"links": {"r0": {"ospf": {"mtu_ignore": True, "del_action": True}}}} + } + result = config_ospf_interface(tgen, topo, r1_ospf_mtu) + assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result) + + clear_ospf(tgen, "r0") + + step( + "Verify that OSPF neighborship between R0 and R1 is stuck in Exstart" " State." + ) + result = verify_ospf_neighbor(tgen, topo, expected=False) + assert result is not True, ( + "Testcase {} : Failed \n OSPF nbrs are Full " + "instead of Exstart. Error: {}".format(tc_name, result) + ) + + step("Modify the MTU to again default valaue on R0 to R1 interface.") + + rtr0.run("ip link set {} mtu 1500".format(r0_r1_intf)) + + clear_ospf(tgen, "r0") + + step("Verify that OSPF neighborship between R0 and R1 becomes full.") + result = verify_ospf_neighbor(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step( + "Configure ospf interface with jumbo MTU (9216)." "Reset ospf neighbors on R0." + ) + + rtr0.run("ip link set {} mtu 9216".format(r0_r1_intf)) + rtr1.run("ip link set {} mtu 9216".format(r1_r0_intf)) + + clear_ospf(tgen, "r0") + clear_ospf(tgen, "r1") + + step("Verify that OSPF neighborship between R0 and R1 becomes full.") + result = verify_ospf_neighbor(tgen, topo) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + step("Verify that jumbo MTU is updated in the show ip ospf interface.") + dut = "r0" + input_dict = {"r0": {"links": {"r1": {"ospf": {"mtuBytes": 9216}}}}} + result = verify_ospf_interface(tgen, topo, dut=dut, input_dict=input_dict) + assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) + + write_test_footer(tc_name) + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |