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tests: Add test to cover advertise-high-metrics functionality
Add tests that configure and disable advertise-high-metrics with wide, narrow, and transition metric styles. Also test ip route behavior. Signed-off-by: Isabella de Leon <ideleon@microsoft.com>
This commit is contained in:
Isabella de Leon
parent
7c47551763
commit
96d2e071e5
19
tests/topotests/isis_advertise_high_metrics/r1/isisd.conf
Normal file
19
tests/topotests/isis_advertise_high_metrics/r1/isisd.conf
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@ -0,0 +1,19 @@
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hostname r1
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! debug isis adj-packets
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! debug isis events
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! debug isis update-packets
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interface eth-r2
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ip router isis 1
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isis circuit-type level-2-only
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isis network point-to-point
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!
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interface eth-r3
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ip router isis 1
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isis circuit-type level-2-only
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isis metric 20
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isis network point-to-point
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!
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router isis 1
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is-type level-2-only
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net 10.0000.0000.0000.0000.0000.0000.0000.0000.0000.00
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!
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@ -0,0 +1,5 @@
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interface eth-r2
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ip address 192.168.1.0/31
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interface eth-r3
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ip address 192.168.1.2/31
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18
tests/topotests/isis_advertise_high_metrics/r2/isisd.conf
Normal file
18
tests/topotests/isis_advertise_high_metrics/r2/isisd.conf
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@ -0,0 +1,18 @@
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hostname r2
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! debug isis adj-packets
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! debug isis events
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! debug isis update-packets
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interface eth-r1
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ip router isis 1
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isis circuit-type level-2-only
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isis network point-to-point
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!
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interface eth-r4
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ip router isis 1
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isis circuit-type level-2-only
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isis network point-to-point
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!
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router isis 1
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is-type level-2-only
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net 10.0000.0000.0000.0000.0000.0000.0000.0000.0001.00
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!
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@ -0,0 +1,5 @@
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interface eth-r1
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ip address 192.168.1.1/31
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interface eth-r4
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ip address 192.168.1.7/31
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20
tests/topotests/isis_advertise_high_metrics/r3/isisd.conf
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20
tests/topotests/isis_advertise_high_metrics/r3/isisd.conf
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@ -0,0 +1,20 @@
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hostname r3
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! debug isis adj-packets
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! debug isis events
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! debug isis update-packets
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interface eth-r1
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ip router isis 1
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isis circuit-type level-2-only
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isis metric 20
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isis network point-to-point
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!
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interface eth-r4
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ip router isis 1
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isis circuit-type level-2-only
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isis metric 20
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isis network point-to-point
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!
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router isis 1
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is-type level-2-only
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net 10.0000.0000.0000.0000.0000.0000.0000.0000.0002.00
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!
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@ -0,0 +1,5 @@
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interface eth-r1
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ip address 192.168.1.3/31
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interface eth-r4
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ip address 192.168.1.4/31
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19
tests/topotests/isis_advertise_high_metrics/r4/isisd.conf
Normal file
19
tests/topotests/isis_advertise_high_metrics/r4/isisd.conf
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@ -0,0 +1,19 @@
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hostname r4
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! debug isis adj-packets
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! debug isis events
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! debug isis update-packets
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interface eth-r2
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ip router isis 1
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isis circuit-type level-2-only
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isis network point-to-point
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!
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interface eth-r3
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ip router isis 1
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isis circuit-type level-2-only
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isis metric 20
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isis network point-to-point
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!
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router isis 1
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is-type level-2-only
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net 10.0000.0000.0000.0000.0000.0000.0000.0000.0003.00
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!
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@ -0,0 +1,5 @@
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interface eth-r2
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ip address 192.168.1.6/31
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interface eth-r3
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ip address 192.168.1.5/31
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@ -0,0 +1,485 @@
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#!/usr/bin/env python
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#
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# test_isis_advertise_high_metrics.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2020 by Volta Networks
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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 NETDEF 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 NETDEF 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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r"""
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test_isis_advertise_high_metrics.py: Advertise High Metrics FRR ISIS Test
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"""
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import os
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import re
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import sys
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import pytest
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import json
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from time import sleep
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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.common_config import (
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retry,
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stop_router,
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start_router,
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)
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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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# Required to instantiate the topology builder class.
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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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# Add ISIS routers:
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# r2
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# / \
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# r1 r4
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# \ /
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# r3
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#
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# Define FRR Routers
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#
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for router in ["r1", "r2", "r3", "r4"]:
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tgen.add_router(router)
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#
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# Define connections
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#
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switch = tgen.add_switch("s0")
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switch.add_link(tgen.gears["r1"], nodeif="eth-r2")
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switch.add_link(tgen.gears["r2"], nodeif="eth-r1")
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"], nodeif="eth-r3")
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switch.add_link(tgen.gears["r3"], nodeif="eth-r1")
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r2"], nodeif="eth-r4")
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switch.add_link(tgen.gears["r4"], nodeif="eth-r2")
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["r3"], nodeif="eth-r4")
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switch.add_link(tgen.gears["r4"], nodeif="eth-r3")
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def setup_module(mod):
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"Sets up the pytest environment"
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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# For all registered routers, load the zebra configuration file
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for rname, router in tgen.routers().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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# After loading the configurations, this function loads configured daemons.
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tgen.start_router()
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def teardown_module(mod):
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"Teardown the pytest environment"
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tgen = get_topogen()
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# This function tears down the whole topology.
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tgen.stop_topology()
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@retry(retry_timeout=60)
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def _check_interface_metrics(router, expected_metrics):
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"Verfiy metrics on router's isis interfaces"
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tgen = get_topogen()
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router = tgen.gears[router]
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logger.info(f"check_interface_metrics {router}")
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isis_interface_output = router.vtysh_cmd(
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"show isis interface detail json"
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)
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intf_json = json.loads(isis_interface_output)
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for i in range(len(expected_metrics)):
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metric = intf_json["areas"][0]["circuits"][i]["interface"]["levels"][0]["metric"]
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if (metric != expected_metrics[i]):
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intf_name = intf_json["areas"][0]["circuits"][i]["interface"]["name"]
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return "{} with expected metric {} on {} got {}".format(
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router.name, expected_metrics[i], intf_name, metric
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)
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return True
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def check_interface_metrics(router, expected_metrics):
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"Verfiy metrics on router's isis interfaces"
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assertmsg = _check_interface_metrics(
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router, expected_metrics
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)
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assert assertmsg is True, assertmsg
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@retry(retry_timeout=60)
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def _check_lsp_metrics(router, lsp, expected_metrics):
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"Verfiy metrics on router's lsp"
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tgen = get_topogen()
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router = tgen.gears[router]
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logger.info(f"check_lsp_metrics {router}")
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isis_lsp_output = router.vtysh_cmd(
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"show isis database detail {}".format(lsp)
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)
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metrics_list = [int(i) for i in re.findall(r"Metric: (\d+)", isis_lsp_output)]
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if len(metrics_list) == 0:
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return False
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for metric in metrics_list:
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if metric not in expected_metrics:
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return "{} with expected metrics {} got {}".format(
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router.name, expected_metrics, metrics_list
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)
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return True
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def check_lsp_metrics(router, lsp, expected_metrics):
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"Verfiy metrics on router's lsp"
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assertmsg = _check_lsp_metrics(
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router, lsp, expected_metrics
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)
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assert assertmsg is True, assertmsg
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@retry(retry_timeout=60)
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def _check_ip_route(router, destination, expected_interface):
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"Verfiy IS-IS route"
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tgen = get_topogen()
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router = tgen.gears[router]
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logger.info(f"check_ip_route {router}")
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route_output = router.vtysh_cmd(
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"show ip route {} json".format(destination)
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)
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route_json = json.loads(route_output)
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interface = route_json[destination][0]["nexthops"][0]["interfaceName"]
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if (interface != expected_interface):
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return "{} with expected route to {} got {} expected {}".format(
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router.name, destination, interface, expected_interface
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)
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return True
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def check_ip_route(router, destination, expected_interface):
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"Verfiy IS-IS route"
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assertmsg = _check_ip_route(
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router, destination, expected_interface
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)
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assert assertmsg is True, assertmsg
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def test_isis_daemon_up():
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"Check isis daemon up before starting test"
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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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for router in ["r1", "r2", "r3", "r4"]:
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r = tgen.gears[router]
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daemons = r.vtysh_cmd(
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"show daemons"
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)
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assert "isisd" in daemons
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# Verify initial metric values.
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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check_lsp_metrics("r2", "r2.00-00", [10, 10])
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check_lsp_metrics("r3", "r3.00-00", [20, 20])
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check_lsp_metrics("r4", "r4.00-00", [10, 20])
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def test_isis_advertise_high_metrics():
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"Check that advertise high metrics behaves as expected"
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tgen = get_topogen()
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net = get_topogen().net
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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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logger.info("Testing advertise high metrics basic behavior")
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# Confirm low metrics values on each isis interface on r1
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r1 = tgen.gears["r1"]
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check_interface_metrics("r1", [10, 20])
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# Confirm low metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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# Configure advertise high metrics
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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advertise-high-metrics
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"""
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)
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# Confirm high wide metrics values on each isis interface on r1
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check_interface_metrics("r1", [16777215])
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# Confirm high wide metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [16777215])
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# Remove advertise high metrics
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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no advertise-high-metrics
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"""
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)
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# Confirm low metrics values on each isis interface on r1
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check_interface_metrics("r1", [10, 20])
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# Confirm low metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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def test_isis_advertise_high_metrics_narrow():
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"Check that advertise high metrics behaves as expected with narrow metrics"
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tgen = get_topogen()
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net = get_topogen().net
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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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logger.info("Testing advertise high metrics with narrow metric style")
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r1 = tgen.gears["r1"]
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# Configure narrow metric-style
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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metric-style narrow
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"""
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)
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# Confirm low metrics values on each isis interface on r1
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check_interface_metrics("r1", [10, 20])
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# Confirm low metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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# Configure advertise high metrics
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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advertise-high-metrics
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"""
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)
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# Confirm high narrow metrics values on each isis interface on r1
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check_interface_metrics("r1", [63])
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# Confirm high narrow metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [63])
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# Remove advertise high metrics
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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no advertise-high-metrics
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"""
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)
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# Confirm low metrics values on each isis interface on r1
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check_interface_metrics("r1", [10, 20])
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# Confirm low metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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# Remove narrow metric-style
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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no metric-style narrow
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"""
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)
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def test_isis_advertise_high_metrics_transition():
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"Check that advertise high metrics behaves as expected with transition metrics"
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tgen = get_topogen()
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net = get_topogen().net
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|
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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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logger.info("Testing advertise high metrics with transition metric style")
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r1 = tgen.gears["r1"]
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# Configure transition metric-style
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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metric-style transition
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"""
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)
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# Confirm low metrics values on each isis interface on r1
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check_interface_metrics("r1", [10, 20])
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# Confirm low metrics values within isis database on r1
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check_lsp_metrics("r1", "r1.00-00", [10, 20])
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# Configure advertise high metrics
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r1.vtysh_cmd(
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f"""
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configure
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router isis 1
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advertise-high-metrics
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"""
|
||||
)
|
||||
|
||||
# Confirm high transition metrics values on each isis interface on r1
|
||||
check_interface_metrics("r1", [62])
|
||||
|
||||
# Confirm high transition metrics values within isis database on r1
|
||||
check_lsp_metrics("r1", "r1.00-00", [62])
|
||||
|
||||
# Remove advertise high metrics
|
||||
r1.vtysh_cmd(
|
||||
f"""
|
||||
configure
|
||||
router isis 1
|
||||
no advertise-high-metrics
|
||||
"""
|
||||
)
|
||||
|
||||
# Confirm low metrics values on each isis interface on r1
|
||||
check_interface_metrics("r1", [10, 20])
|
||||
|
||||
# Confirm low metrics values within isis database on r1
|
||||
check_lsp_metrics("r1", "r1.00-00", [10, 20])
|
||||
|
||||
# Remove narrow metric-style
|
||||
r1.vtysh_cmd(
|
||||
f"""
|
||||
configure
|
||||
router isis 1
|
||||
no metric-style transition
|
||||
"""
|
||||
)
|
||||
|
||||
|
||||
def test_isis_advertise_high_metrics_route():
|
||||
"""
|
||||
Topology:
|
||||
|
||||
r2
|
||||
/ \
|
||||
r1 r4
|
||||
\ /
|
||||
r3
|
||||
|
||||
Devices are configured with preferred route between r1 and r4:
|
||||
r1 -> r2 -> r4
|
||||
Configure "advertise-high-metrics" on r2 and check that preferred route is:
|
||||
r1 -> r3 -> r4.
|
||||
Shut r3 and check that preferred route is:
|
||||
r1 -> r2 -> r4.
|
||||
"""
|
||||
tgen = get_topogen()
|
||||
net = get_topogen().net
|
||||
|
||||
# Don't run this test if we have any failure.
|
||||
if tgen.routers_have_failure():
|
||||
pytest.skip(tgen.errors)
|
||||
|
||||
logger.info("Testing advertise high metrics route behavior")
|
||||
|
||||
r1 = tgen.gears["r1"]
|
||||
r2 = tgen.gears["r2"]
|
||||
|
||||
# Verify the preferred path from r1 to r4 (192.168.1.6) is currently via 192.168.1.1, eth-r2
|
||||
check_ip_route("r1", "192.168.1.6/31", "eth-r2")
|
||||
|
||||
# Configure advertise high metrics on r2
|
||||
r2.vtysh_cmd(
|
||||
f"""
|
||||
configure
|
||||
router isis 1
|
||||
advertise-high-metrics
|
||||
"""
|
||||
)
|
||||
|
||||
# Verify the preferred path from r1 to r4 (192.168.1.6) is now via 192.168.1.3, eth-r3
|
||||
check_ip_route("r1", "192.168.1.6/31", "eth-r3")
|
||||
|
||||
# Shutdown r3
|
||||
logger.info("Stop router r3")
|
||||
stop_router(tgen, "r3")
|
||||
|
||||
# Verify the preferred path from r1 to r4 (192.168.1.6) is now via 192.168.1.1, eth-r2
|
||||
check_ip_route("r1", "192.168.1.6/31", "eth-r2")
|
||||
|
||||
# Start r3
|
||||
logger.info("Start router r3")
|
||||
start_router(tgen, "r3")
|
||||
|
||||
|
||||
def test_memory_leak():
|
||||
"Run the memory leak test and report results."
|
||||
tgen = get_topogen()
|
||||
if not tgen.is_memleak_enabled():
|
||||
pytest.skip("Memory leak test/report is disabled")
|
||||
|
||||
tgen.report_memory_leaks()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
args = ["-s"] + sys.argv[1:]
|
||||
sys.exit(pytest.main(args))
|
||||
Loading…
Reference in New Issue
Block a user