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-rw-r--r--test/scenario_test/bgp_zebra_nht_test.py292
1 files changed, 292 insertions, 0 deletions
diff --git a/test/scenario_test/bgp_zebra_nht_test.py b/test/scenario_test/bgp_zebra_nht_test.py
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+++ b/test/scenario_test/bgp_zebra_nht_test.py
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+# Copyright (C) 2017 Nippon Telegraph and Telephone Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+import time
+import unittest
+
+from fabric.api import local
+from fabric.state import env
+import nose
+
+from lib.noseplugin import OptionParser, parser_option
+
+from lib import base
+from lib.base import (
+ Bridge,
+ BGP_FSM_ESTABLISHED,
+)
+from lib.gobgp import GoBGPContainer
+from lib.quagga import QuaggaOSPFContainer
+
+
+def try_local(command, f=local, ok_ret_codes=None, **kwargs):
+ ok_ret_codes = ok_ret_codes or []
+ orig_ok_ret_codes = list(env.ok_ret_codes)
+ try:
+ env.ok_ret_codes.extend(ok_ret_codes)
+ return f(command, **kwargs)
+ finally:
+ env.ok_ret_codes = orig_ok_ret_codes
+
+
+def wait_for(f, timeout=120):
+ interval = 1
+ count = 0
+ while True:
+ if f():
+ return
+
+ time.sleep(interval)
+ count += interval
+ if count >= timeout:
+ raise Exception('timeout')
+
+
+def get_ifname_with_prefix(prefix, f=local):
+ command = (
+ "ip addr show to %s"
+ " | head -n1 | cut -d'@' -f1 | cut -d' ' -f2") % prefix
+
+ return f(command, capture=True)
+
+
+class ZebraNHTTest(unittest.TestCase):
+ """
+ Test case for Next-Hop Tracking with Zebra integration.
+ """
+ # R1: GoBGP
+ # R2: GoBGP + Zebra + OSPFd
+ # R3: Zebra + OSPFd
+ # R4: Zebra + OSPFd
+ #
+ # +----+
+ # | R3 |... has loopback 10.3.1.1/32
+ # +----+
+ # / |
+ # / |
+ # / +----+
+ # / | R4 |
+ # / +----+
+ # +----+ |
+ # | R2 |------+
+ # +----+
+ # | 192.168.0.2/24
+ # |
+ # | 192.168.0.0/24
+ # |
+ # | 192.168.0.1/24
+ # +----+
+ # | R1 |
+ # +----+
+
+ @classmethod
+ def setUpClass(cls):
+ gobgp_ctn_image_name = parser_option.gobgp_image
+ base.TEST_PREFIX = parser_option.test_prefix
+
+ local("echo 'start %s'" % cls.__name__, capture=True)
+
+ cls.r1 = GoBGPContainer(
+ name='r1', asn=65000, router_id='192.168.0.1',
+ ctn_image_name=gobgp_ctn_image_name,
+ log_level=parser_option.gobgp_log_level,
+ zebra=False)
+
+ cls.r2 = GoBGPContainer(
+ name='r2', asn=65000, router_id='192.168.0.2',
+ ctn_image_name=gobgp_ctn_image_name,
+ log_level=parser_option.gobgp_log_level,
+ zebra=True,
+ zapi_version=3,
+ ospfd_config={
+ 'networks': {
+ '192.168.23.0/24': '0.0.0.0',
+ '192.168.24.0/24': '0.0.0.0',
+ },
+ })
+
+ cls.r3 = QuaggaOSPFContainer(
+ name='r3',
+ zebra_config={
+ 'interfaces': {
+ 'lo': [
+ 'ip address 10.3.1.1/32',
+ ],
+ },
+ },
+ ospfd_config={
+ 'networks': {
+ '10.3.1.1/32': '0.0.0.0',
+ '192.168.23.0/24': '0.0.0.0',
+ '192.168.34.0/24': '0.0.0.0',
+ },
+ })
+
+ cls.r4 = QuaggaOSPFContainer(
+ name='r4',
+ ospfd_config={
+ 'networks': {
+ '192.168.34.0/24': '0.0.0.0',
+ '192.168.24.0/24': '0.0.0.0',
+ },
+ })
+
+ wait_time = max(ctn.run() for ctn in [cls.r1, cls.r2, cls.r3, cls.r4])
+ time.sleep(wait_time)
+
+ cls.br_r1_r2 = Bridge(name='br_r1_r2', subnet='192.168.12.0/24')
+ [cls.br_r1_r2.addif(ctn) for ctn in (cls.r1, cls.r2)]
+
+ cls.br_r2_r3 = Bridge(name='br_r2_r3', subnet='192.168.23.0/24')
+ [cls.br_r2_r3.addif(ctn) for ctn in (cls.r2, cls.r3)]
+
+ cls.br_r2_r4 = Bridge(name='br_r2_r4', subnet='192.168.24.0/24')
+ [cls.br_r2_r4.addif(ctn) for ctn in (cls.r2, cls.r4)]
+
+ cls.br_r3_r4 = Bridge(name='br_r3_r4', subnet='192.168.34.0/24')
+ [cls.br_r3_r4.addif(ctn) for ctn in (cls.r3, cls.r4)]
+
+ def test_01_BGP_neighbor_established(self):
+ """
+ Test to start BGP connection up between r1-r2.
+ """
+
+ self.r1.add_peer(self.r2, bridge=self.br_r1_r2.name)
+ self.r2.add_peer(self.r1, bridge=self.br_r1_r2.name)
+
+ self.r1.wait_for(expected_state=BGP_FSM_ESTABLISHED, peer=self.r2)
+
+ def test_02_OSPF_established(self):
+ """
+ Test to start OSPF connection up between r2-r3 and receive the route
+ to r3's loopback '10.3.1.1'.
+ """
+ def _f():
+ return try_local(
+ "vtysh -c 'show ip ospf route'"
+ " | grep '10.3.1.1/32'",
+ f=self.r2.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ wait_for(f=_f)
+
+ def test_03_add_ipv4_route(self):
+ """
+ Test to add IPv4 route to '10.3.1.0/24' whose nexthop is r3's
+ loopback '10.3.1.1'.
+
+ Also, test to receive the initial MED/Metric.
+ """
+ # MED/Metric = 10(r2 to r3) + 10(r3-ethX to r3-lo)
+ med = 20
+
+ def _f_r2():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r2.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ def _f_r1():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r1.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ self.r2.local(
+ 'gobgp global rib add -a ipv4 10.3.1.0/24 nexthop 10.3.1.1')
+
+ wait_for(f=_f_r2)
+ wait_for(f=_f_r1)
+
+ def test_04_link_r2_r3_down(self):
+ """
+ Test to update MED to the nexthop if the Metric to that nexthop is
+ changed by the link down.
+
+ If the link r2-r3 goes down, MED/Metric should be increased.
+ """
+ # MED/Metric = 10(r2 to r4) + 10(r4 to r3) + 10(r3-ethX to r3-lo)
+ med = 30
+
+ def _f_r2():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r2.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ def _f_r1():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r1.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ ifname = get_ifname_with_prefix('192.168.23.3/24', f=self.r3.local)
+ self.r3.local('ip link set %s down' % ifname)
+
+ wait_for(f=_f_r2)
+ wait_for(f=_f_r1)
+
+ def test_05_link_r2_r3_restore(self):
+ """
+ Test to update MED to the nexthop if the Metric to that nexthop is
+ changed by the link up again.
+
+ If the link r2-r3 goes up again, MED/Metric should be update with
+ the initial value.
+ """
+ # MED/Metric = 10(r2 to r3) + 10(r3-ethX to r3-lo)
+ med = 20
+
+ def _f_r2():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r2.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ def _f_r1():
+ return try_local(
+ "gobgp global rib -a ipv4 10.3.1.0/24"
+ " | grep 'Med: %d'" % med,
+ f=self.r1.local,
+ ok_ret_codes=[1], # for the empty case with "grep" command
+ capture=True)
+
+ ifname = get_ifname_with_prefix('192.168.23.3/24', f=self.r3.local)
+ self.r3.local('ip link set %s up' % ifname)
+
+ wait_for(f=_f_r2)
+ wait_for(f=_f_r1)
+
+
+if __name__ == '__main__':
+ output = local("which docker 2>&1 > /dev/null ; echo $?", capture=True)
+ if int(output) is not 0:
+ print "docker not found"
+ sys.exit(1)
+
+ nose.main(argv=sys.argv, addplugins=[OptionParser()],
+ defaultTest=sys.argv[0])
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 17:20:24 +0000