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topotest: add test for confederation

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add a test dedicated to confederation. it also take into
account the support of AS memberwith same id  that the
confederation id.

Signed-off-by: Francois Dumontet <francois.dumontet@6wind.com>
This commit is contained in:
Francois Dumontet 2022-11-23 15:35:14 +01:00
parent b0a8f709a5
commit bb31900439
22 changed files with 580 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

0
tests/topotests/bgp_confed1/__init__.py Normal file
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63
tests/topotests/bgp_confed1/r1/bgp_ipv4_unicast.json Normal file
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@ -0,0 +1,63 @@
{
"vrfId":0,
"vrfName":"default",
"routerId":"203.0.113.1",
"defaultLocPrf":100,
"localAS":100,
"routes":{"203.0.113.0/28":[
{
"network":"203.0.113.0\/28",
"peerId":"(unspec)",
"path":"",
"origin":"IGP",
"nexthops":[
{
"ip":"0.0.0.0",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.16/28":[
{
"network":"203.0.113.16\/28",
"peerId":"192.0.2.2",
"path":"300",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.2",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.32/28":[
{
"network":"203.0.113.32\/28",
"peerId":"192.0.2.2",
"path":"300",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.2",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.48/28":[
{
"network":"203.0.113.48\/28",
"peerId":"192.0.2.2",
"path":"300 400",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.2",
"afi":"ipv4",
"used":true
}
]
}
] } }

13
tests/topotests/bgp_confed1/r1/bgp_summary.json Normal file
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{
"ipv4Unicast":{
"routerId":"203.0.113.1",
"as":100,
"peers":{
"192.0.2.2":{
"remoteAs": 300,
"state": "Established",
"peerState":"OK"
}
}
}
}

13
tests/topotests/bgp_confed1/r1/bgpd.conf Normal file
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debug bgp neighbor-events
debug bgp nht
debug bgp updates in
debug bgp updates out
!
router bgp 100
no bgp ebgp-requires-policy
!
neighbor 192.0.2.2 remote-as 300
address-family ipv4 unicast
network 203.0.113.0/28
exit-address-family
!

0
tests/topotests/bgp_confed1/r1/isisd.conf Normal file
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6
tests/topotests/bgp_confed1/r1/zebra.conf Normal file
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interface r1-eth0
ip address 192.0.2.1/28
!
interface lo
ip address 203.0.113.1/28
!

63
tests/topotests/bgp_confed1/r2/bgp_ipv4_unicast.json Normal file
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{
"vrfId":0,
"vrfName":"default",
"routerId":"203.0.113.17",
"defaultLocPrf":100,
"localAS":200,
"routes":{"203.0.113.0/28": [
{
"network":"203.0.113.0\/28",
"peerId":"192.0.2.1",
"path":"100",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.1",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.16/28":[
{
"network":"203.0.113.16\/28",
"peerId":"(unspec)",
"path":"",
"origin":"IGP",
"nexthops":[
{
"ip":"0.0.0.0",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.32/28":[
{
"network":"203.0.113.32\/28",
"peerId":"192.0.2.18",
"path":"(300)",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.18",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.48/28":[
{
"network":"203.0.113.48\/28",
"peerId":"192.0.2.18",
"path":"(300) 400",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.50",
"afi":"ipv4",
"used":true
}
]
}
] } }

18
tests/topotests/bgp_confed1/r2/bgp_summary.json Normal file
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{
"ipv4Unicast":{
"routerId":"203.0.113.17",
"as":200,
"peers":{
"192.0.2.1":{
"remoteAs":100,
"state":"Established",
"peerState":"OK"
},
"192.0.2.18":{
"remoteAs":300,
"state":"Established",
"peerState":"OK"
}
}
}
}

18
tests/topotests/bgp_confed1/r2/bgpd.conf Normal file
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@ -0,0 +1,18 @@
debug bgp neighbor-events
debug bgp nht
debug bgp updates in
debug bgp updates out
!
router bgp 200
no bgp ebgp-requires-policy
bgp confederation identifier 300
bgp confederation peers 300
neighbor 192.0.2.1 remote-as 100
neighbor 192.0.2.18 remote-as 300
!
address-family ipv4 unicast
network 203.0.113.16/28
neighbor 192.0.2.18 default-originate
exit-address-family
!

8
tests/topotests/bgp_confed1/r2/isisd.conf Normal file
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interface r2-eth1
ip router isis 1
isis circuit-type level-2-only
router isis 1
is-type level-2-only
net 49.0001.0002.0002.0002.00
redistribute ipv4 connected level-2

9
tests/topotests/bgp_confed1/r2/zebra.conf Normal file
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interface r2-eth0
ip address 192.0.2.2/28
!
interface r2-eth1
ip address 192.0.2.17/28
!
interface lo
ip address 203.0.113.17/28
!

77
tests/topotests/bgp_confed1/r3/bgp_ipv4_unicast.json Normal file
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{
"vrfId":0,
"vrfName":"default",
"routerId":"203.0.113.33",
"defaultLocPrf":100,
"localAS":300,
"routes":{"0.0.0.0/0":[
{
"network":"0.0.0.0\/0",
"peerId":"192.0.2.17",
"path":"(200)",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.17",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.0/28":[
{
"network":"203.0.113.0\/28",
"peerId":"192.0.2.17",
"path":"(200) 100",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.1",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.16/28":[
{
"network":"203.0.113.16\/28",
"peerId":"192.0.2.17",
"path":"(200)",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.17",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.32/28":[
{
"network":"203.0.113.32\/28",
"peerId":"(unspec)",
"path":"",
"origin":"IGP",
"nexthops":[
{
"ip":"0.0.0.0",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.48/28":[
{
"network":"203.0.113.48\/28",
"peerId":"192.0.2.50",
"path":"400",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.50",
"afi":"ipv4",
"used":true
}
]
}
] } }

18
tests/topotests/bgp_confed1/r3/bgp_summary.json Normal file
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@ -0,0 +1,18 @@
{
"ipv4Unicast":{
"routerId":"203.0.113.33",
"as":300,
"peers":{
"192.0.2.17":{
"remoteAs":200,
"state":"Established",
"peerState":"OK"
},
"192.0.2.50":{
"remoteAs":400,
"state":"Established",
"peerState":"OK"
}
}
}
}

17
tests/topotests/bgp_confed1/r3/bgpd.conf Normal file
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@ -0,0 +1,17 @@
debug bgp neighbor-events
debug bgp nht
debug bgp updates in
debug bgp updates out
!
router bgp 300
no bgp ebgp-requires-policy
bgp confederation identifier 300
bgp confederation peers 200
neighbor 192.0.2.17 remote-as 200
neighbor 192.0.2.50 remote-as 400
!
address-family ipv4 unicast
network 203.0.113.32/28
exit-address-family
!

8
tests/topotests/bgp_confed1/r3/isisd.conf Normal file
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interface r3-eth1
ip router isis 1
isis circuit-type level-2-only
router isis 1
is-type level-2-only
net 49.0001.0003.0003.0003.00
redistribute ipv4 connected level-2

10
tests/topotests/bgp_confed1/r3/zebra.conf Normal file
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@ -0,0 +1,10 @@
!
interface r3-eth0
ip address 192.0.2.49/28
!
interface r3-eth1
ip address 192.0.2.18/28
!
interface lo
ip address 203.0.113.33/28
!

77
tests/topotests/bgp_confed1/r4/bgp_ipv4_unicast.json Normal file
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{
"vrfId":0,
"vrfName":"default",
"routerId":"203.0.113.49",
"defaultLocPrf":100,
"localAS":400,
"routes":{"0.0.0.0/0":[
{
"network":"0.0.0.0\/0",
"peerId":"192.0.2.49",
"path":"300",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.49",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.0/28":[
{
"network":"203.0.113.0\/28",
"peerId":"192.0.2.49",
"path":"300 100",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.49",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.16/28":[
{
"network":"203.0.113.16\/28",
"peerId":"192.0.2.49",
"path":"300",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.49",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.32/28":[
{
"network":"203.0.113.32\/28",
"peerId":"192.0.2.49",
"path":"300",
"origin":"IGP",
"nexthops":[
{
"ip":"192.0.2.49",
"afi":"ipv4",
"used":true
}
]
}
],"203.0.113.48/28":[
{
"network":"203.0.113.48\/28",
"peerId":"(unspec)",
"path":"",
"origin":"IGP",
"nexthops":[
{
"ip":"0.0.0.0",
"afi":"ipv4",
"used":true
}
]
}
] } }

13
tests/topotests/bgp_confed1/r4/bgp_summary.json Normal file
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{
"ipv4Unicast":{
"routerId":"203.0.113.49",
"as":400,
"peers":{
"192.0.2.49":{
"remoteAs":300,
"state":"Established",
"peerState":"OK"
}
}
}
}

14
tests/topotests/bgp_confed1/r4/bgpd.conf Normal file
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@ -0,0 +1,14 @@
debug bgp neighbor-events
debug bgp nht
debug bgp updates in
debug bgp updates out
!
router bgp 400
no bgp ebgp-requires-policy
bgp disable-ebgp-connected-route-check
!
neighbor 192.0.2.49 remote-as 300
address-family ipv4 unicast
network 203.0.113.48/28
exit-address-family
!

0
tests/topotests/bgp_confed1/r4/isisd.conf Normal file
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6
tests/topotests/bgp_confed1/r4/zebra.conf Normal file
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interface r4-eth0
ip address 192.0.2.50/28
!
interface lo
ip address 203.0.113.49/28
!

129
tests/topotests/bgp_confed1/test_bgp_confed1.py Normal file
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#!/usr/bin/env python
#
# test_bgp_confed1.py
#
# Copyright 2022 6WIND S.A.
#
# 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 6WIND DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL 6WIND 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_bgp_confed1.py: Test the FRR BGP confederations with AS member
same as confederation Id, verify BGP prefixes and path distribution
"""
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
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
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("s3")
switch.add_link(tgen.gears["r3"])
switch.add_link(tgen.gears["r4"])
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["r2"])
switch.add_link(tgen.gears["r3"])
def setup_module(mod):
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.items():
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_ISIS, os.path.join(CWD, "{}/isisd.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
# Initialize all routers.
tgen.start_router()
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
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=125, wait=2.0)
assertmsg = "{}: bgp did not converge".format(router.name)
assert res is None, assertmsg
def test_bgp_confed_ipv4_unicast():
"Assert that BGP is exchanging BGP route."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("waiting for bgp peers exchanging UPDATES")
for router in tgen.routers().values():
ref_file = "{}/{}/bgp_ipv4_unicast.json".format(CWD, router.name)
expected = json.loads(open(ref_file).read())
test_func = partial(
topotest.router_json_cmp, router, "show bgp ipv4 unicast json", expected
)
_, res = topotest.run_and_expect(test_func, None, count=40, wait=2.5)
assertmsg = "{}: BGP UPDATE exchange failure".format(router.name)
assert res is None, assertmsg
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))