384 lines
10 KiB
Python
384 lines
10 KiB
Python
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#!/usr/bin/python
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# SPDX-License-Identifier: ISC
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#
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# Copyright (c) 2021 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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"""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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from ipaddress import IPv4Address
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from lib.topotest import frr_unicode
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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 lib.topogen import Topogen, get_topogen
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# Import topoJson from lib, to create topology and initial configuration
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from lib.common_config import (
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start_topology,
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write_test_header,
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write_test_footer,
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reset_config_on_routers,
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verify_rib,
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create_static_routes,
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step,
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create_route_maps,
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shutdown_bringup_interface,
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create_interfaces_cfg,
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get_frr_ipv6_linklocal,
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)
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from lib.topolog import logger
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from lib.topojson import build_config_from_json
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from lib.ospf import (
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verify_ospf6_neighbor,
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config_ospf_interface,
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clear_ospf,
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verify_ospf6_rib,
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create_router_ospf,
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verify_ospf6_interface,
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verify_ospf6_database,
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config_ospf6_interface,
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)
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from ipaddress import IPv6Address
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pytestmark = [pytest.mark.ospfd, pytest.mark.staticd]
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# Global variables
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topo = None
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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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"ipv6": ["2::1/128", "2::2/128", "2::3/128", "2::4/128", "2::5/128"],
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}
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MASK = {"ipv6": "32", "ipv6": "128"}
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"""
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TOPOOLOGY =
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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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Ethernet Segment
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TESTCASES =
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1. Verify OSPF ECMP with max path configured as 8
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(Edge having 1 uplink port as broadcast network,
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connect to 8 TORs - LAN case)
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"""
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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, switch_name
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testsuite_run_time = time.asctime(time.localtime(time.time()))
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logger.info("Testsuite start time: {}".format(testsuite_run_time))
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logger.info("=" * 40)
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logger.info("Running setup_module to create topology")
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# This function initiates the topology build with Topogen...
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json_file = "{}/ospfv3_ecmp_lan.json".format(CWD)
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tgen = Topogen(json_file, mod.__name__)
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global topo
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topo = tgen.json_topo
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# ... and here it calls Mininet initialization functions.
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# Starting topology, create tmp files which are loaded to routers
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# to start daemons and then start routers
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start_topology(tgen)
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# Creating configuration from JSON
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build_config_from_json(tgen, topo)
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# 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_ospf6_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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switch_name = [k for k in topo["switches"].keys()][0]
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logger.info("Running setup_module() done")
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def teardown_module(mod):
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"""
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Teardown the pytest environment.
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* `mod`: module name
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"""
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logger.info("Running teardown_module to delete topology")
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tgen = get_topogen()
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# Stop toplogy and Remove tmp files
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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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logger.info(
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"Testsuite end time: {}".format(time.asctime(time.localtime(time.time())))
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)
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logger.info("=" * 40)
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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: {"ospf6": {"redistribute": [{"redist_type": "static"}]}}}
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else:
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ospf_red = {
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dut: {
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"ospf6": {"redistribute": [{"redist_type": "static", "delete": True}]}
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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: {"ospf6": {"redistribute": [{"redist_type": "connected"}]}}}
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else:
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ospf_red = {
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dut: {
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"ospf6": {
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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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def get_llip(onrouter, intf):
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"""
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API to get the link local ipv6 address of a particular interface
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Parameters
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----------
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* `fromnode`: Source node
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* `tonode` : interface for which link local ip needs to be returned.
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Usage
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-----
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result = get_llip('r1', 'r2-link0')
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Returns
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-------
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1) link local ipv6 address from the interface.
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2) errormsg - when link local ip not found.
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"""
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tgen = get_topogen()
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intf = topo["routers"][onrouter]["links"][intf]["interface"]
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llip = get_frr_ipv6_linklocal(tgen, onrouter, intf)
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if llip:
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logger.info("llip ipv6 address to be set as NH is %s", llip)
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return llip
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return None
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def get_glipv6(onrouter, intf):
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"""
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API to get the global ipv6 address of a particular interface
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Parameters
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----------
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* `onrouter`: Source node
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* `intf` : interface for which link local ip needs to be returned.
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Usage
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-----
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result = get_glipv6('r1', 'r2-link0')
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Returns
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-------
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1) global ipv6 address from the interface.
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2) errormsg - when link local ip not found.
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"""
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glipv6 = (topo["routers"][onrouter]["links"][intf]["ipv6"]).split("/")[0]
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if glipv6:
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logger.info("Global ipv6 address to be set as NH is %s", glipv6)
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return glipv6
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return None
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# ##################################
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# Test cases start here.
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# ##################################
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def test_ospfv3_lan_ecmp_tc18_p0(request):
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"""
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OSPF ECMP.
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Verify OSPF ECMP with max path configured as 8
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(Edge having 1 uplink port as broadcast network,
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connect to 8 TORs - LAN case)
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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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step(". Configure ospf in all the routers on LAN interface.")
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reset_config_on_routers(tgen)
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step("Verify that OSPF is up with 8 neighborship sessions.")
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ospf_covergence = verify_ospf6_neighbor(tgen, topo, lan=True)
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assert ospf_covergence is True, "Testcase Failed \n Error: {}".format(
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ospf_covergence
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)
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step(
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"Configure a static route in all the routes and "
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"redistribute static/connected in OSPF."
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)
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for rtr in topo["routers"]:
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input_dict = {
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rtr: {
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"static_routes": [
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{"network": NETWORK["ipv6"][0], "no_of_ip": 5, "next_hop": "Null0"}
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]
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}
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}
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result = create_static_routes(tgen, input_dict)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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dut = rtr
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red_static(dut)
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step(
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"Verify that route in R0 in stalled with 8 hops. "
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"Verify ospf route table and ip route table."
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)
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nh = []
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for rtr in topo["routers"]:
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llip = get_llip(rtr, switch_name)
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assert llip is not None, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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nh.append(llip)
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llip = get_llip("r1", switch_name)
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assert llip is not None, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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nh.remove(llip)
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dut = "r1"
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result = verify_ospf6_rib(tgen, dut, input_dict)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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protocol = "ospf6"
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result = verify_rib(tgen, "ipv6", dut, input_dict, protocol=protocol)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
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step(" clear ip ospf interface on DUT(r0)")
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clear_ospf(tgen, "r0", ospf="ospf6")
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step(
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"Verify that after clearing the ospf interface all the "
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"neighbours are up and routes are installed with 8 next hop "
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"in ospf and ip route tables on R0"
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)
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dut = "r0"
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ospf_covergence = verify_ospf6_neighbor(tgen, topo, dut=dut, lan=True)
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assert ospf_covergence is True, "Testcase Failed \n Error: {}".format(
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ospf_covergence
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)
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step(" clear ip ospf interface on R2")
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clear_ospf(tgen, "r2")
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dut = "r2"
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ospf_covergence = verify_ospf6_neighbor(tgen, topo, dut=dut, lan=True)
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assert ospf_covergence is True, "Testcase Failed \n Error: {}".format(
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ospf_covergence
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)
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step("Delete static/connected cmd in ospf in all the routes one by one.")
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for rtr in topo["routers"]:
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input_dict = {
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rtr: {
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"static_routes": [
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{
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"network": NETWORK["ipv6"][0],
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"no_of_ip": 5,
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"next_hop": "Null0",
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"delete": True,
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}
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]
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}
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}
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result = create_static_routes(tgen, input_dict)
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assert result is True, "Testcase {} : Failed \n Error: {}".format(
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tc_name, result
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)
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write_test_footer(tc_name)
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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