Skip to content
Permalink
Browse files

bfd-topo1: add convergence tests

Test if BFD peers have found each other and if the BGP neighors have
connected.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
  • Loading branch information...
rzalamena committed Feb 28, 2018
1 parent 3f5896b commit 7bf96ff424f0350d58ff47ed6ea521c1dfb00021
No changes.
@@ -0,0 +1,6 @@
bfd
peer 192.168.0.2
echo-mode
no shutdown
!
!
@@ -0,0 +1,11 @@
{
"ipv4Unicast": {
"as": 101,
"peers": {
"192.168.0.2": {
"remoteAs": 102,
"state": "Established"
}
}
}
}
@@ -0,0 +1,4 @@
router bgp 101
neighbor 192.168.0.2 remote-as 102
neighbor 192.168.0.2 bfd
!
@@ -0,0 +1,8 @@
[
{
"remote-receive-interval": 1000,
"remote-transmit-interval": 500,
"peer": "192.168.0.2",
"status": "up"
}
]
@@ -0,0 +1,3 @@
interface r1-eth0
ip address 192.168.0.1/24
!
@@ -0,0 +1,12 @@
bfd
peer 192.168.0.1
receive-interval 1000
transmit-interval 500
echo-mode
no shutdown
!
peer 192.168.1.1
echo-mode
no shutdown
!
!
@@ -0,0 +1,19 @@
{
"ipv4Unicast": {
"as": 102,
"peers": {
"192.168.0.1": {
"remoteAs": 101,
"state": "Established"
},
"192.168.1.1": {
"remoteAs": 103,
"state": "Established"
},
"192.168.2.1": {
"remoteAs": 104,
"state": "Established"
}
}
}
}
@@ -0,0 +1,8 @@
router bgp 102
neighbor 192.168.0.1 remote-as 101
neighbor 192.168.0.1 bfd
neighbor 192.168.1.1 remote-as 103
neighbor 192.168.1.1 bfd
neighbor 192.168.2.1 remote-as 104
neighbor 192.168.2.1 bfd
!
@@ -0,0 +1,17 @@
[
{
"peer": "192.168.0.1",
"status": "up"
},
{
"remote-echo-interval": 100,
"peer": "192.168.1.1",
"status": "up"
},
{
"remote-transmit-interval": 2000,
"remote-receive-interval": 2000,
"peer": "192.168.2.1",
"status": "up"
}
]
@@ -0,0 +1,9 @@
interface r2-eth0
ip address 192.168.0.2/24
!
interface r2-eth1
ip address 192.168.1.2/24
!
interface r2-eth2
ip address 192.168.2.2/24
!
@@ -0,0 +1,7 @@
bfd
peer 192.168.1.2
echo-interval 100
echo-mode
no shutdown
!
!
@@ -0,0 +1,11 @@
{
"ipv4Unicast": {
"as": 103,
"peers": {
"192.168.1.2": {
"remoteAs": 102,
"state": "Established"
}
}
}
}
@@ -0,0 +1,4 @@
router bgp 103
neighbor 192.168.1.2 remote-as 102
neighbor 192.168.1.2 bfd
!
@@ -0,0 +1,6 @@
[
{
"peer": "192.168.1.2",
"status": "up"
}
]
@@ -0,0 +1,3 @@
interface r3-eth0
ip address 192.168.1.1/24
!
@@ -0,0 +1,7 @@
bfd
peer 192.168.2.2
transmit-interval 2000
receive-interval 2000
no shutdown
!
!
@@ -0,0 +1,11 @@
{
"ipv4Unicast": {
"as": 104,
"peers": {
"192.168.2.2": {
"remoteAs": 102,
"state": "Established"
}
}
}
}
@@ -0,0 +1,4 @@
router bgp 104
neighbor 192.168.2.2 remote-as 102
neighbor 192.168.2.2 bfd
!
@@ -0,0 +1,6 @@
[
{
"peer": "192.168.2.2",
"status": "up"
}
]
@@ -0,0 +1,3 @@
interface r4-eth0
ip address 192.168.2.1/24
!
@@ -0,0 +1,157 @@
#!/usr/bin/env python

#
# test_bfd_topo1.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2018 by
# Network Device Education Foundation, Inc. ("NetDEF")
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#

"""
test_bfd_topo1.py: Test the FRR/Quagga BFD daemon.
"""

import os
import sys
import json
from functools import partial
import pytest

# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, '../'))

# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger

# Required to instantiate the topology builder class.
from mininet.topo import Topo

class BFDTopo(Topo):
"Test topology builder"
def build(self, *_args, **_opts):
"Build function"
tgen = get_topogen(self)

# Create 4 routers
for routern in range(1, 5):
tgen.add_router('r{}'.format(routern))

switch = tgen.add_switch('s1')
switch.add_link(tgen.gears['r1'])
switch.add_link(tgen.gears['r2'])

switch = tgen.add_switch('s2')
switch.add_link(tgen.gears['r2'])
switch.add_link(tgen.gears['r3'])

switch = tgen.add_switch('s3')
switch.add_link(tgen.gears['r2'])
switch.add_link(tgen.gears['r4'])


def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(BFDTopo, mod.__name__)
tgen.start_topology()

router_list = tgen.routers()
for rname, router in router_list.iteritems():
router.load_config(
TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_BFD,
os.path.join(CWD, '{}/bfdd.conf'.format(rname))
)
router.load_config(
TopoRouter.RD_BGP,
os.path.join(CWD, '{}/bgpd.conf'.format(rname))
)

# Initialize all routers.
tgen.start_router()

# Verify that we are using the proper version and that the BFD
# daemon exists.
for router in router_list.values():
# Check for Version
if router.has_version('<', '5.1'):
tgen.set_error('Unsupported FRR version')
break


def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()


def test_bfd_connection():
"Assert that the BFD peers can find themselves."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)

logger.info('waiting for bfd peers to go up')

for router in tgen.routers().values():
json_file = '{}/{}/peers.json'.format(CWD, router.name)
expected = json.loads(open(json_file).read())

test_func = partial(topotest.router_json_cmp,
router, 'show bfd peers json', expected)
_, result = topotest.run_and_expect(test_func, None, count=8, wait=0.5)
assertmsg = '"{}" JSON output mismatches'.format(router.name)
assert result is None, assertmsg


def test_bgp_convergence():
"Assert that BGP is converging."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)

logger.info('waiting for bgp peers to go up')

for router in tgen.routers().values():
ref_file = '{}/{}/bgp_summary.json'.format(CWD, router.name)
expected = json.loads(open(ref_file).read())
test_func = partial(topotest.router_json_cmp,
router, 'show ip bgp summary json', expected)
_, res = topotest.run_and_expect(test_func, None, count=20, wait=0.5)
assertmsg = '{}: bgp did not converge'.format(router.name)
assert res is None, assertmsg


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))

0 comments on commit 7bf96ff

Please sign in to comment.
You can’t perform that action at this time.