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topotests: add an ebgp 6vpe test

Browse Source 
This test uses the connected ipv4 mapped ipv6 prefix
to resolve the received BGP routes.

Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Signed-off-by: François Dumontet <francois.dumontet@6wind.com>
(cherry picked from commit 4d7df91752)
This commit is contained in:
Philippe Guibert 2023-03-13 10:47:16 +01:00 committed by Mergify
parent 5761af9b07
commit bd030c14cb
15 changed files with 725 additions and 0 deletions
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0
tests/topotests/bgp_6vpe_ebgp_topo1/__init__.py Normal file
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4
tests/topotests/bgp_6vpe_ebgp_topo1/h1/zebra.conf Normal file
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ipv6 route fd00:200::/64 fd00:100::2
interface eth-pe1
ipv6 address fd00:100::1/64
!

8
tests/topotests/bgp_6vpe_ebgp_topo1/h2/zebra.conf Normal file
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ipv6 route fd00:100::/64 fd00:200::5
interface eth-pe2
ipv6 address fd00:200::6/64
ipv6 address fd00:201::6/64
ipv6 address fd00:300::6/64
ipv6 address fd00:400::6/64
ipv6 address fd01:200::6/64
!

13
tests/topotests/bgp_6vpe_ebgp_topo1/pe1/bgp_summary.json Normal file
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{
"ipv6Vpn": {
"routerId": "198.51.100.2",
"as": 65500,
"peers": {
"192.0.2.5": {
"remoteAs": 65501,
"state": "Established",
"peerState": "OK"
}
}
}
}

116
tests/topotests/bgp_6vpe_ebgp_topo1/pe1/bgp_vrf_ipv6.json Normal file
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{
"vrfName": "vrf1",
"routerId": "198.51.100.2",
"defaultLocPrf": 100,
"localAS": 65500,
"routes": {
"fd00:100::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:100::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:200::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:200::/64",
"metric": 0,
"weight": 0,
"path": "65501",
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:201::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:201::/64",
"metric": 0,
"weight": 0,
"path": "65501",
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:300::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:300::/64",
"metric": 0,
"weight": 0,
"path": "65501",
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:400::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:400::/64",
"metric": 0,
"weight": 0,
"path": "65501",
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd01:200::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd01:200::/64",
"metric": 0,
"weight": 0,
"path": "65501",
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
]
}
}

32
tests/topotests/bgp_6vpe_ebgp_topo1/pe1/bgpd.conf Normal file
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!
!debug bgp zebra
router bgp 65500
bgp router-id 198.51.100.2
no bgp ebgp-requires-policy
neighbor 192.0.2.5 remote-as 65501
neighbor 192.0.2.5 capability extended-nexthop
address-family ipv4 unicast
no neighbor 192.0.2.5 activate
exit-address-family
address-family ipv6 vpn
neighbor 192.0.2.5 activate
neighbor 192.0.2.5 route-map rmap in
exit-address-family
exit
router bgp 65500 vrf vrf1
bgp router-id 198.51.100.2
address-family ipv6 unicast
redistribute connected
label vpn export 101
rd vpn export 444:1
rt vpn both 52:100
export vpn
import vpn
exit-address-family
!
interface eth-pe2
mpls bgp forwarding
!
route-map rmap permit 1
set ipv6 next-hop prefer-global
!

142
tests/topotests/bgp_6vpe_ebgp_topo1/pe1/ipv6_routes_vrf.json Normal file
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{
"fd00:100::/64": [
{
"prefix": "fd00:100::/64",
"protocol": "connected",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 0,
"metric": 0,
"installed": true,
"nexthops": [
{
"fib": true,
"directlyConnected": true,
"interfaceName": "eth-h1",
"active": true
}
]
}
],
"fd00:200::/64": [
{
"prefix": "fd00:200::/64",
"protocol": "bgp",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 20,
"metric": 0,
"installed": true,
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"vrf": "default",
"active": true,
"labels": [
102
],
"weight": 1
}
]
}
],
"fd00:201::/64": [
{
"prefix": "fd00:201::/64",
"protocol": "bgp",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 20,
"metric": 0,
"installed": true,
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"vrf": "default",
"active": true,
"labels": [
102
],
"weight": 1
}
]
}
],
"fd00:300::/64": [
{
"prefix": "fd00:300::/64",
"protocol": "bgp",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 20,
"metric": 0,
"installed": true,
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"vrf": "default",
"active": true,
"labels": [
102
],
"weight": 1
}
]
}
],
"fd00:400::/64": [
{
"prefix": "fd00:400::/64",
"protocol": "bgp",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 20,
"metric": 0,
"installed": true,
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"vrf": "default",
"active": true,
"labels": [
102
],
"weight": 1
}
]
}
],
"fd01:200::/64": [
{
"prefix": "fd01:200::/64",
"protocol": "bgp",
"vrfName": "vrf1",
"selected": true,
"destSelected": true,
"distance": 20,
"metric": 0,
"installed": true,
"nexthops": [
{
"ip": "::ffff:c000:205",
"afi": "ipv6",
"vrf": "default",
"active": true,
"labels": [
102
],
"weight": 1
}
]
}
]
}

23
tests/topotests/bgp_6vpe_ebgp_topo1/pe1/isisd.conf Normal file
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!
interface lo
ip router isis 1
isis hello-interval 1
isis hello-multiplier 3
!
interface eth-pe2
ip router isis 1
isis hello-interval 1
isis hello-multiplier 3
!
router isis 1
net 49.0000.0007.e901.2222.00
is-type level-1
lsp-gen-interval 1
mpls-te on
mpls-te router-address 198.51.100.2
segment-routing on
segment-routing node-msd 8
segment-routing global-block 1000 10000 local-block 30000 30999
segment-routing prefix 198.51.100.2/32 index 22
!

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tests/topotests/bgp_6vpe_ebgp_topo1/pe1/zebra.conf Normal file
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!
interface eth-h1
ipv6 address fd00:100::2/64
!
interface eth-pe2
ip address 192.0.2.2/24
ipv6 address ::ffff:192.0.2.2/120
!
interface lo
ip address 198.51.100.2/32
!

13
tests/topotests/bgp_6vpe_ebgp_topo1/pe2/bgp_summary.json Normal file
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{
"ipv6Vpn": {
"routerId": "198.51.100.5",
"as": 65501,
"peers": {
"192.0.2.2": {
"remoteAs": 65500,
"state": "Established",
"peerState": "OK"
}
}
}
}

116
tests/topotests/bgp_6vpe_ebgp_topo1/pe2/bgp_vrf_ipv6.json Normal file
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{
"vrfName": "vrf1",
"routerId": "198.51.100.5",
"defaultLocPrf": 100,
"localAS": 65501,
"routes": {
"fd00:100::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:100::/64",
"metric": 0,
"weight": 0,
"path": "65500",
"nexthops": [
{
"ip": "::ffff:c000:202",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:200::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:200::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:201::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:201::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:300::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:300::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd00:400::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd00:400::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
],
"fd01:200::/64": [
{
"valid": true,
"bestpath": true,
"network": "fd01:200::/64",
"metric": 0,
"weight": 32768,
"path": "",
"nexthops": [
{
"ip": "::",
"afi": "ipv6",
"scope": "global",
"used": true
}
]
}
]
}
}

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tests/topotests/bgp_6vpe_ebgp_topo1/pe2/bgpd.conf Normal file
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!
router bgp 65501
bgp router-id 198.51.100.5
no bgp ebgp-requires-policy
neighbor 192.0.2.2 remote-as 65500
neighbor 192.0.2.2 capability extended-nexthop
address-family ipv4 unicast
no neighbor 192.0.2.2 activate
exit-address-family
address-family ipv6 vpn
neighbor 192.0.2.2 activate
neighbor 192.0.2.2 route-map rmap in
exit-address-family
exit
router bgp 65501 vrf vrf1
bgp router-id 198.51.100.5
address-family ipv6 unicast
redistribute connected
label vpn export 102
rd vpn export 444:2
rt vpn both 52:100
export vpn
import vpn
exit-address-family
!
interface eth-pe1
mpls bgp forwarding
!
route-map rmap permit 1
set ipv6 next-hop prefer-global
!

22
tests/topotests/bgp_6vpe_ebgp_topo1/pe2/isisd.conf Normal file
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!
interface lo
ip router isis 1
isis hello-interval 1
isis hello-multiplier 3
!
interface eth-pe1
ip router isis 1
isis hello-interval 1
isis hello-multiplier 3
!
router isis 1
net 49.0000.0007.e901.5555.00
is-type level-1
lsp-gen-interval 1
mpls-te on
mpls-te router-address 198.51.100.5
segment-routing on
segment-routing node-msd 8
segment-routing global-block 1000 10000 local-block 33000 33999
segment-routing prefix 198.51.100.5/32 index 55
!

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tests/topotests/bgp_6vpe_ebgp_topo1/pe2/zebra.conf Normal file
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!
interface eth-h2
ipv6 address fd00:200::5/64
ipv6 address fd00:201::5/64
ipv6 address fd00:300::5/64
ipv6 address fd00:400::5/64
ipv6 address fd01:200::5/64
!
interface eth-pe1
ip address 192.0.2.5/24
ipv6 address ::ffff:192.0.2.5/120
!
interface lo
ip address 198.51.100.5/32
!

179
tests/topotests/bgp_6vpe_ebgp_topo1/test_bgp_6vpe_ebgp_topo1.py Normal file
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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2023 by 6WIND
#
"""
Test the FRR BGP 6VPE functionality
"""
import os
import sys
import json
import functools
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
from lib.checkping import check_ping
pytestmark = [pytest.mark.bgpd, pytest.mark.isisd]
def build_topo(tgen):
"""
+---+ +---+ +---+ +---+
| h1|----|pe1|----|pe2|----| h2|
+---+ +---+ +---+ +---+
"""
def connect_routers(tgen, left, right):
pe = None
host = None
for rname in [left, right]:
if rname not in tgen.routers().keys():
tgen.add_router(rname)
if "pe" in rname:
pe = tgen.gears[rname]
if "h" in rname:
host = tgen.gears[rname]
switch = tgen.add_switch("s-{}-{}".format(left, right))
switch.add_link(tgen.gears[left], nodeif="eth-{}".format(right))
switch.add_link(tgen.gears[right], nodeif="eth-{}".format(left))
if pe and host:
pe.cmd("ip link add vrf1 type vrf table 10")
pe.cmd("ip link set vrf1 up")
pe.cmd("ip link set dev eth-{} master vrf1".format(host.name))
if "p" in left and "p" in right:
# PE <-> P or P <-> P
tgen.gears[left].run("sysctl -w net.mpls.conf.eth-{}.input=1".format(right))
tgen.gears[right].run("sysctl -w net.mpls.conf.eth-{}.input=1".format(left))
connect_routers(tgen, "h1", "pe1")
connect_routers(tgen, "pe1", "pe2")
connect_routers(tgen, "pe2", "h2")
def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
logger.info("setup_module")
for rname, router in tgen.routers().items():
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
if "h" in rname:
# hosts
continue
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")
router_list = ["pe1", "pe2"]
for name in router_list:
router = tgen.gears[name]
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 bgp summary json", expected
)
_, res = topotest.run_and_expect(test_func, None, count=90, wait=1)
assertmsg = "{}: bgp did not converge".format(router.name)
assert res is None, assertmsg
def test_bgp_ipv6_vpn():
"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")
router_list = ["pe1", "pe2"]
for name in router_list:
router = tgen.gears[name]
ref_file = "{}/{}/bgp_vrf_ipv6.json".format(CWD, router.name)
expected = json.loads(open(ref_file).read())
test_func = partial(
topotest.router_json_cmp,
router,
"show bgp vrf vrf1 ipv6 unicast json",
expected,
)
_, res = topotest.run_and_expect(test_func, None, count=30, wait=1)
assertmsg = "{}: BGP UPDATE exchange failure".format(router.name)
assert res is None, assertmsg
def test_zebra_ipv6_installed():
"Assert that routes are installed."
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
pe1 = tgen.gears["pe1"]
logger.info("check ipv6 routes installed on pe1")
ref_file = "{}/{}/ipv6_routes_vrf.json".format(CWD, pe1.name)
expected = json.loads(open(ref_file).read())
test_func = partial(
topotest.router_json_cmp, pe1, "show ipv6 route vrf vrf1 json", expected
)
_, res = topotest.run_and_expect(test_func, None, count=30, wait=1)
assertmsg = "{}: Zebra Installation failure on vrf vrf1".format(pe1.name)
assert res is None, assertmsg
def test_bgp_ping6_ok():
"Check that h1 pings h2"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
check_ping("h1", "fd00:200::6", True, 5, 1)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))