324 lines
9.7 KiB
Python
324 lines
9.7 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_isis_te_topo1.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2021 by Orange
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# Author: Olivier Dugeon <olivier.dugeon@orange.com>
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#
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"""
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test_isis_te_topo1.py: Test the FRR IS-IS with Traffic Engineering.
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+------------+
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| R1 |
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| 10.0.225.1 |
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+------------+
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r1-eth0| |r1-eth1
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10.0.0.0/24| |10.0.1.0/24
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| |2001:db8:1:/64
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r2-eth0| |r2-eth1
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+------------+ +------------+
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| R2 |r2-eth2 r3-eth0| R3 |
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| 10.0.255.2 +------------------+ 10.0.255.3 |
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| | 10.0.3.0/24 | |
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+------------+ 2001:db8:3:/64 +------+-----+
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r2-eth3| r3-eth1|
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10.0.4.0/24| |
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r4-eth0| 2001:db8:5:/64|
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+------------+ |
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| R4 |r4-eth1 |
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| 10.0.255.4 +-------------------------+
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+------------+
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"""
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import os
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import sys
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import json
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from functools import partial
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# Save the Current Working Directory to find configuration files.
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.topolog import logger
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# and Finally pytest
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import pytest
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pytestmark = [pytest.mark.isisd]
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def build_topo(tgen):
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"Build function"
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# Create 4 routers
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for routern in range(1, 5):
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tgen.add_router("r{}".format(routern))
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# Interconect router 1 and 2 with 2 links
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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# Interconect router 3 and 2
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r2"])
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# Interconect router 4 and 2
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switch = tgen.add_switch("s4")
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switch.add_link(tgen.gears["r4"])
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switch.add_link(tgen.gears["r2"])
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# Interconnect router 3 and 4
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switch = tgen.add_switch("s5")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r4"])
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def setup_module(mod):
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"Sets up the pytest environment"
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logger.info("\n\n---- Starting IS-IS TE tests ----\n")
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for rname, router in router_list.items():
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_ISIS, os.path.join(CWD, "{}/isisd.conf".format(rname))
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)
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# Initialize all routers.
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tgen.start_router()
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def teardown_module():
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"Teardown the pytest environment"
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tgen = get_topogen()
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tgen.stop_topology()
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logger.info("\n\n---- IS-IS TE tests End ----\n")
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def compare_ted_json_output(tgen, rname, fileref):
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"Compare TED JSON output"
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logger.info('Comparing router "%s" TED output', rname)
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filename = "{}/reference/{}".format(CWD, fileref)
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expected = json.loads(open(filename).read())
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command = "show isis mpls-te database json"
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# Run test function until we get an result. Wait at most 60 seconds.
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test_func = partial(topotest.router_json_cmp, tgen.gears[rname], command, expected)
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_, diff = topotest.run_and_expect(test_func, None, count=60, wait=2)
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assertmsg = '"{}" TED JSON output mismatches the expected result'.format(rname)
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assert diff is None, assertmsg
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def setup_testcase(msg):
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"Setup test case"
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logger.info(msg)
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tgen = get_topogen()
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# Skip if previous fatal error condition is raised
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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return tgen
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# Note that all routers must discover the same Network Topology, so the same TED.
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def test_step1():
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"Step1: Check initial topology"
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tgen = setup_testcase("Step1: test initial IS-IS TE Data Base")
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step1.json")
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def test_step2():
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"Step2: Shutdown interface between r1 and r2 and verify that \
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corresponding Edges are removed from the TED on all routers "
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tgen = setup_testcase("Step2: Shutdown interface between r1 & r2")
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "interface r1-eth1" -c "shutdown"')
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tgen.net["r2"].cmd('vtysh -c "conf t" -c "interface r2-eth1" -c "shutdown"')
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step2.json")
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def test_step3():
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"Step3: Enable IPv6 address between r1 and r2 and verify that \
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corresponding Edges are added in the TED on all routers"
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tgen = setup_testcase("Step3: Add IPv6 on r1 and r2 interfaces")
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tgen.net["r1"].cmd(
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'vtysh -c "conf t" -c "interface r1-eth0" -c "ipv6 address 2001:db8:0::1/64"'
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)
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tgen.net["r1"].cmd(
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'vtysh -c "conf t" -c "interface r1-eth0" -c "ipv6 router isis TE"'
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)
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tgen.net["r2"].cmd(
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'vtysh -c "conf t" -c "interface r2-eth0" -c "ipv6 address 2001:db8:0::2/64"'
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)
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tgen.net["r2"].cmd(
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'vtysh -c "conf t" -c "interface r2-eth0" -c "ipv6 router isis TE"'
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)
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step3.json")
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def test_step4():
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"Step4: Modify Segment Routing Prefix SID advertisement on Router r4"
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tgen = setup_testcase("Step4: Modify Prefix SID on router r4")
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tgen.net["r4"].cmd(
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'vtysh -c "conf t" -c "router isis TE" -c "segment-routing prefix 10.0.255.4/32 index 40"'
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)
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tgen.net["r4"].cmd(
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'vtysh -c "conf t" -c "router isis TE" -c "segment-routing prefix 2001:db8:ffff::4/128 index 1040"'
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)
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step4.json")
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def test_step5():
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"Step5: Re-enable interface between r1 & r2 and verify that corresponding \
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Edges are added in the TED on all routers"
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tgen = setup_testcase("Step5: Re-enable interface between r1 & r2")
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "interface r1-eth1" -c "no shutdown"')
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tgen.net["r2"].cmd('vtysh -c "conf t" -c "interface r2-eth1" -c "no shutdown"')
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step5.json")
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def test_step6():
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"Step6: Set delay and jitter for interface r4-eth0 on r4, remove use-bw \
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for interface r2-eth3 on r2 and verify that corresponding Edges are \
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updated in the TED on all routers"
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tgen = setup_testcase("Step6: Modify link parameters on r2 & r4")
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tgen.net["r2"].cmd(
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'vtysh -c "conf t" -c "interface r2-eth3" -c "link-params" -c "no use-bw"'
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)
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tgen.net["r4"].cmd(
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'vtysh -c "conf t" -c "interface r4-eth0" -c "link-params" -c "delay 20000"'
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)
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tgen.net["r4"].cmd(
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'vtysh -c "conf t" -c "interface r4-eth0" -c "link-params" -c "delay-variation 10000"'
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)
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step6.json")
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def test_step7():
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"Step7: Set extended admin-group on r1-eth0"
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tgen = setup_testcase("Step7: Modify link parameters on r1")
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "affinity-map WHITE bit-position 0"')
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "affinity-map RED bit-position 31"')
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "affinity-map GREEN bit-position 32"')
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "affinity-map BLACK bit-position 128"')
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tgen.net["r1"].cmd(
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'vtysh -c "conf t" -c "interface r1-eth0" -c "link-params" -c "affinity RED WHITE BLACK GREEN"'
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)
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step7.json")
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def test_step8():
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"Step8: Change value of affinity-map GREEN"
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tgen = setup_testcase("Step8: Change value of affinity-map GREEN")
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "affinity-map GREEN bit-position 33"')
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step8.json")
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def test_step9():
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"Step9: Trying to remove affinity-map GREEN. \
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Must not succeed because in use"
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tgen = setup_testcase("Step9: Trying to remove affinity-map GREEN")
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tgen.net["r1"].cmd('vtysh -c "conf t" -c "no affinity-map GREEN"')
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step9.json")
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def test_step10():
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"Step10: Removing r1-eth0 affinity GREEN"
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tgen = setup_testcase("Step10: Removing r1-eth0 affinity GREEN")
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tgen.net["r1"].cmd(
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'vtysh -c "conf t" -c "interface r1-eth0" -c "link-params" -c "no affinity GREEN"'
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)
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for rname in ["r1", "r2", "r3", "r4"]:
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compare_ted_json_output(tgen, rname, "ted_step10.json")
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def test_memory_leak():
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"Run the memory leak test and report results."
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tgen = get_topogen()
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if not tgen.is_memleak_enabled():
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pytest.skip("Memory leak test/report is disabled")
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tgen.report_memory_leaks()
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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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