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725 lines
23 KiB
Python
725 lines
23 KiB
Python
#!/usr/bin/python
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#
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# Copyright (c) 2020 by VMware, Inc. ("VMware")
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# Used Copyright (c) 2018 by Network Device Education Foundation, Inc.
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# ("NetDEF") in this file.
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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# OF THIS SOFTWARE.
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#
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"""OSPF Basic Functionality Automation."""
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import os
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import sys
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import time
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import pytest
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import json
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from copy import deepcopy
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import ipaddress
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# Save the Current Working Directory to find configuration files.
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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sys.path.append(os.path.join(CWD, "../lib/"))
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from mininet.topo import Topo
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from lib.topogen import Topogen, get_topogen
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# Import topoJson from lib, to create topology and initial configuration
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from lib.common_config import (
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start_topology,
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write_test_header,
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create_interfaces_cfg,
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write_test_footer,
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reset_config_on_routers,
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verify_rib,
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create_static_routes,
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check_address_types,
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step,
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create_route_maps,
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shutdown_bringup_interface,
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stop_router,
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start_router,
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topo_daemons,
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)
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from lib.bgp import verify_bgp_convergence, create_router_bgp
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from lib.topolog import logger
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from lib.topojson import build_topo_from_json, build_config_from_json
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from lib.ospf import (
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verify_ospf_neighbor,
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config_ospf_interface,
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clear_ospf,
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verify_ospf_rib,
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create_router_ospf,
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verify_ospf_interface,
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)
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from ipaddress import IPv4Address
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# Global variables
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topo = None
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# Reading the data from JSON File for topology creation
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jsonFile = "{}/ospf_lan.json".format(CWD)
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try:
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with open(jsonFile, "r") as topoJson:
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topo = json.load(topoJson)
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except IOError:
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assert False, "Could not read file {}".format(jsonFile)
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NETWORK = {
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"ipv4": [
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"11.0.20.1/32",
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"11.0.20.2/32",
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"11.0.20.3/32",
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"11.0.20.4/32",
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"11.0.20.5/32",
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]
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}
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"""
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Topology:
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Please view in a fixed-width font such as Courier.
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Topo : Broadcast Networks
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+---+ +---+ +---+ +---+
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|R0 + +R1 + +R2 + +R3 |
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+-+-+ +-+-+ +-+-+ +-+-+
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| | | |
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--+-----------+--------------+---------------+-----
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Ethernet Segment
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Testcases:
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1. OSPF Hello protocol - Verify DR BDR Elections
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2. OSPF IFSM -Verify state change events on DR / BDR / DR Other
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"""
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class CreateTopo(Topo):
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"""
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Test topology builder.
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* `Topo`: Topology object
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"""
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def build(self, *_args, **_opts):
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"""Build function."""
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tgen = get_topogen(self)
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# Building topology from json file
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build_topo_from_json(tgen, topo)
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def setup_module(mod):
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"""
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Sets up the pytest environment
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* `mod`: module name
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"""
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global topo
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testsuite_run_time = time.asctime(time.localtime(time.time()))
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logger.info("Testsuite start time: {}".format(testsuite_run_time))
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logger.info("=" * 40)
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logger.info("Running setup_module to create topology")
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# This function initiates the topology build with Topogen...
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tgen = Topogen(CreateTopo, mod.__name__)
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# ... and here it calls Mininet initialization functions.
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# get list of daemons needs to be started for this suite.
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daemons = topo_daemons(tgen, topo)
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# Starting topology, create tmp files which are loaded to routers
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# to start deamons and then start routers
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start_topology(tgen, daemons)
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# Creating configuration from JSON
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build_config_from_json(tgen, topo)
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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# Api call verify whether OSPF is converged
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ospf_covergence = verify_ospf_neighbor(tgen, topo, lan=True)
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assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
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ospf_covergence
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)
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logger.info("Running setup_module() done")
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def teardown_module():
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"""Teardown the pytest environment"""
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logger.info("Running teardown_module to delete topology")
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tgen = get_topogen()
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try:
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# Stop toplogy and Remove tmp files
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tgen.stop_topology
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except OSError:
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# OSError exception is raised when mininet tries to stop switch
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# though switch is stopped once but mininet tries to stop same
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# switch again, where it ended up with exception
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pass
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def red_static(dut, config=True):
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"""Local def for Redstribute static routes inside ospf."""
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global topo
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tgen = get_topogen()
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if config:
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ospf_red = {dut: {"ospf": {"redistribute": [{"redist_type": "static"}]}}}
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else:
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ospf_red = {
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dut: {
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"ospf": {
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"redistribute": [{"redist_type": "static", "del_action": True}]
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}
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}
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}
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result = create_router_ospf(tgen, topo, ospf_red)
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assert result is True, "Testcase : Failed \n Error: {}".format(result)
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def red_connected(dut, config=True):
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"""Local def for Redstribute connected routes inside ospf."""
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global topo
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tgen = get_topogen()
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if config:
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ospf_red = {dut: {"ospf": {"redistribute": [{"redist_type": "connected"}]}}}
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else:
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ospf_red = {
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dut: {
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"ospf": {
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"redistribute": [{"redist_type": "connected", "del_action": True}]
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}
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}
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}
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result = create_router_ospf(tgen, topo, ospf_red)
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assert result is True, "Testcase: Failed \n Error: {}".format(result)
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# ##################################
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# Test cases start here.
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# ##################################
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def test_ospf_lan_tc1_p0(request):
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"""
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OSPF Hello protocol - Verify DR BDR Elections
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"""
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tc_name = request.node.name
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write_test_header(tc_name)
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tgen = get_topogen()
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# Don't run this test if we have any failure.
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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global topo
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step("Bring up the base config as per the topology")
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reset_config_on_routers(tgen)
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step("Verify that DR BDR DRother are elected in the LAN.")
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "DR"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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dut = "r0"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step(
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"Verify that all the routers are in FULL state with DR and BDR "
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"in the topology"
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)
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input_dict = {
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"r1": {
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"ospf": {
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"neighbors": {
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"r0": {"state": "Full", "role": "Backup"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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dut = "r1"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step(
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"Configure DR pririty 100 on R0 and clear ospf neighbors " "on all the routers."
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)
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input_dict = {
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"r0": {
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"links": {
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"s1": {
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"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
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"ospf": {"priority": 100},
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}
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}
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}
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}
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result = create_interfaces_cfg(tgen, input_dict)
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assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result)
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step("Clear ospf neighbours in all routers")
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for rtr in ["r0", "r1", "r2", "r3"]:
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clear_ospf(tgen, rtr)
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step("Verify that DR election is triggered and R0 is elected as DR")
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "Backup"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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dut = "r0"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step(
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"Configure DR pririty 150 on R0 and clear ospf neighbors " "on all the routers."
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)
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input_dict = {
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"r0": {
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"links": {
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"s1": {
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"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
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"ospf": {"priority": 150},
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}
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}
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}
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}
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result = create_interfaces_cfg(tgen, input_dict)
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assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result)
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step("Clear ospf neighbours in all routers")
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for rtr in ["r0", "r1"]:
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clear_ospf(tgen, rtr)
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step("Verify that DR election is triggered and R0 is elected as DR")
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "Backup"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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dut = "r0"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Configure DR priority 0 on R0 & Clear ospf nbrs on all the routers")
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input_dict = {
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"r0": {
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"links": {
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"s1": {
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"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
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"ospf": {"priority": 0},
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}
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}
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}
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}
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result = create_interfaces_cfg(tgen, input_dict)
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assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result)
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step("Clear ospf neighbours in all routers")
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for rtr in ["r1"]:
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clear_ospf(tgen, rtr)
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step("Verify that DR election is triggered and R0 is elected as DRother")
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "DR"},
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"r2": {"state": "2-Way", "role": "DROther"},
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"r3": {"state": "2-Way", "role": "DROther"},
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}
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}
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}
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}
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dut = "r0"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step(
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"Configure DR priority to default on R0 and Clear ospf neighbors"
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" on all the routers"
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)
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input_dict = {
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"r0": {
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"links": {
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"s1": {
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"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
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"ospf": {"priority": 100},
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}
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}
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}
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}
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result = create_interfaces_cfg(tgen, input_dict)
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assert result is True, "Testcase {} :Failed \n Error: {}".format(tc_name, result)
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step("Clear ospf neighbours in all routers")
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for rtr in ["r0", "r1"]:
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clear_ospf(tgen, rtr)
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step("Verify that DR election is triggered and R0 is elected as DR")
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "Backup"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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dut = "r0"
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Shut interface on R0")
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dut = "r0"
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intf = topo["routers"]["r0"]["links"]["s1"]["interface"]
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shutdown_bringup_interface(tgen, dut, intf, False)
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result = verify_ospf_neighbor(tgen, topo, dut, lan=True, expected=False)
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assert result is not True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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step("No Shut interface on R0")
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dut = "r0"
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intf = topo["routers"]["r0"]["links"]["s1"]["interface"]
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shutdown_bringup_interface(tgen, dut, intf, True)
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input_dict = {
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"r0": {
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"ospf": {
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"neighbors": {
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"r1": {"state": "Full", "role": "DR"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
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}
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}
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}
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}
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step("Verify that after no shut ospf neighbours are full on R0.")
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Clear ospf on DR router in the topology.")
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clear_ospf(tgen, "r0")
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step("Verify that BDR is getting promoted to DR after clear.")
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step("Verify that all the nbrs are in FULL state with the elected DR.")
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Change the ip on LAN intf on R0 to other ip from the same subnet.")
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topo_modify_change_ip = deepcopy(topo)
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intf_ip = topo_modify_change_ip["routers"]["r0"]["links"]["s1"]["ipv4"]
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topo_modify_change_ip["routers"]["r0"]["links"]["s1"]["ipv4"] = str(
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IPv4Address(unicode(intf_ip.split("/")[0])) + 3
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) + "/{}".format(intf_ip.split("/")[1])
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build_config_from_json(tgen, topo_modify_change_ip, save_bkup=False)
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step(
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"Verify that OSPF is in FULL state with other routers with "
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"newly configured IP."
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)
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result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step("Change the ospf router id on the R0 and clear ip ospf interface.")
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change_rid = {"r0": {"ospf": {"router_id": "100.1.1.100"}}}
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result = create_router_ospf(tgen, topo, change_rid)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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topo["routers"]["r0"]["ospf"]["router_id"] = "100.1.1.100"
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step("Reload the FRR router")
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stop_router(tgen, "r0")
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start_router(tgen, "r0")
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step(
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"Verify that OSPF is in FULL state with other routers with"
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" newly configured router id."
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)
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input_dict = {
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"r1": {
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"ospf": {
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"neighbors": {
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"r0": {"state": "Full", "role": "Backup"},
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"r2": {"state": "Full", "role": "DROther"},
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"r3": {"state": "Full", "role": "DROther"},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
dut = "r1"
|
|
result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
|
|
|
|
step("Reconfigure the original router id and clear ip ospf interface.")
|
|
change_rid = {"r0": {"ospf": {"router_id": "100.1.1.0"}}}
|
|
result = create_router_ospf(tgen, topo, change_rid)
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
|
|
topo["routers"]["r0"]["ospf"]["router_id"] = "100.1.1.0"
|
|
step("Reload the FRR router")
|
|
# stop/start -> restart FRR router and verify
|
|
stop_router(tgen, "r0")
|
|
start_router(tgen, "r0")
|
|
|
|
step("Verify that OSPF is enabled with router id previously configured.")
|
|
input_dict = {
|
|
"r1": {
|
|
"ospf": {
|
|
"neighbors": {
|
|
"r0": {"state": "Full", "role": "Backup"},
|
|
"r2": {"state": "Full", "role": "DROther"},
|
|
"r3": {"state": "Full", "role": "DROther"},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
dut = "r1"
|
|
result = verify_ospf_neighbor(tgen, topo, dut, input_dict, lan=True)
|
|
assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
|
|
|
|
write_test_footer(tc_name)
|
|
|
|
|
|
def test_ospf_lan_tc2_p0(request):
|
|
"""
|
|
OSPF IFSM -Verify state change events on DR / BDR / DR Other
|
|
|
|
"""
|
|
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.")
|
|
dut = "r0"
|
|
input_dict = {
|
|
"r0": {
|
|
"links": {
|
|
"s1": {
|
|
"ospf": {
|
|
"priority": 98,
|
|
"timerDeadSecs": 4,
|
|
"area": "0.0.0.3",
|
|
"mcastMemberOspfDesignatedRouters": True,
|
|
"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"]["s1"]["ipv4"],
|
|
"interface": topo["routers"]["r0"]["links"]["s1"]["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"]["s1"]["ipv4"]
|
|
topo_modify_change_ip["routers"]["r0"]["links"]["s1"]["ipv4"] = str(
|
|
IPv4Address(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": {
|
|
"s1": {
|
|
"ospf": {
|
|
"ipAddress": topo_modify_change_ip["routers"]["r0"]["links"][
|
|
"s1"
|
|
]["ipv4"].split("/")[0],
|
|
"ipAddressPrefixlen": int(
|
|
topo_modify_change_ip["routers"]["r0"]["links"]["s1"][
|
|
"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"]["s1"]["ipv4"]
|
|
mask = topo_modify_change_ip["routers"]["r0"]["links"]["s1"]["ipv4"]
|
|
step("Delete the ip address")
|
|
topo1 = {
|
|
"r0": {
|
|
"links": {
|
|
"r3": {
|
|
"ipv4": ip_addr,
|
|
"interface": topo["routers"]["r0"]["links"]["s1"]["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"]["s1"]["ipv4"]
|
|
topo_modify_change_ip["routers"]["r0"]["links"]["s1"]["ipv4"] = str(
|
|
IPv4Address(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": {
|
|
"s1": {
|
|
"ospf": {
|
|
"ipAddress": topo_modify_change_ip["routers"]["r0"]["links"][
|
|
"s1"
|
|
]["ipv4"].split("/")[0],
|
|
"ipAddressPrefixlen": int(
|
|
topo_modify_change_ip["routers"]["r0"]["links"]["s1"][
|
|
"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("Change the area id on the interface")
|
|
input_dict = {
|
|
"r0": {
|
|
"links": {
|
|
"s1": {
|
|
"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
|
|
"ospf": {"area": "0.0.0.3"},
|
|
"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": {
|
|
"s1": {
|
|
"interface": topo["routers"]["r0"]["links"]["s1"]["interface"],
|
|
"ospf": {"area": "0.0.0.2"},
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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": {"s1": {"ospf": {"area": "0.0.0.2", "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)
|
|
|
|
write_test_footer(tc_name)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
args = ["-s"] + sys.argv[1:]
|
|
sys.exit(pytest.main(args))
|