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tests: Check if we can override IPv6 next-hop for VPN networks in route-map

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Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2022-11-18 15:40:45 +02:00
parent b7de3fe8a9
commit 9a84cb612e
14 changed files with 307 additions and 0 deletions
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0
tests/topotests/bgp_vpn_5549_route_map/__init__.py Normal file
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tests/topotests/bgp_vpn_5549_route_map/cpe1/bgpd.conf Normal file
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router bgp 65000
no bgp ebgp-requires-policy
neighbor 192.168.1.2 remote-as external
neighbor 192.168.1.2 timers 1 3
neighbor 192.168.1.2 timers connect 1
address-family ipv4 unicast
redistribute connected
exit-address-family
!

9
tests/topotests/bgp_vpn_5549_route_map/cpe1/zebra.conf Normal file
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!
interface lo
ip address 172.16.255.1/32
!
interface cpe1-eth0
ip address 192.168.1.1/24
!
ip forwarding
!

6
tests/topotests/bgp_vpn_5549_route_map/cpe2/bgpd.conf Normal file
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router bgp 65000
no bgp ebgp-requires-policy
neighbor 192.168.2.2 remote-as external
neighbor 192.168.2.2 timers 1 3
neighbor 192.168.2.2 timers connect 1
!

6
tests/topotests/bgp_vpn_5549_route_map/cpe2/zebra.conf Normal file
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!
interface cpe2-eth0
ip address 192.168.2.1/24
!
ip forwarding
!

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tests/topotests/bgp_vpn_5549_route_map/pe1/bgpd.conf Normal file
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router bgp 65001
bgp router-id 10.10.10.10
no bgp ebgp-requires-policy
no bgp default ipv4-unicast
neighbor 2001:db8:1::2 remote-as internal
neighbor 2001:db8:1::2 update-source 2001:db8:1::1
neighbor 2001:db8:1::2 timers 1 3
neighbor 2001:db8:1::2 timers connect 1
neighbor 2001:db8:1::2 capability extended-nexthop
address-family ipv4 vpn
neighbor 2001:db8:1::2 activate
neighbor 2001:db8:1::2 route-map pe2 out
exit-address-family
!
router bgp 65001 vrf RED
bgp router-id 192.168.1.2
no bgp ebgp-requires-policy
neighbor 192.168.1.1 remote-as external
neighbor 192.168.1.1 timers 1 3
neighbor 192.168.1.1 timers connect 1
address-family ipv4 unicast
label vpn export 1111
rd vpn export 192.168.1.2:2
rt vpn import 192.168.2.2:2 192.168.1.2:2
rt vpn export 192.168.1.2:2
export vpn
import vpn
exit-address-family
!
ip prefix-list cpe1 seq 5 permit 172.16.255.1/32
!
route-map pe2 permit 10
match ip address prefix-list cpe1
set ipv6 vpn next-hop 2001:db8::1
!
route-map pe2 permit 20
exit
!

10
tests/topotests/bgp_vpn_5549_route_map/pe1/ldpd.conf Normal file
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mpls ldp
router-id 10.10.10.10
!
address-family ipv4
discovery transport-address 10.10.10.10
!
interface pe1-eth1
!
!
!

12
tests/topotests/bgp_vpn_5549_route_map/pe1/ospf6d.conf Normal file
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!
interface lo
ipv6 ospf6 area 0
!
interface pe1-eth1
ipv6 ospf6 area 0
ipv6 ospf6 hello-interval 1
ipv6 ospf6 dead-interval 3
!
router ospf6
ospf6 router-id 10.10.10.10
!

14
tests/topotests/bgp_vpn_5549_route_map/pe1/zebra.conf Normal file
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!
interface lo
ip address 10.10.10.10/32
ipv6 address 2001:db8:1::1/128
!
interface pe1-eth0 vrf RED
ip address 192.168.1.2/24
!
interface pe1-eth1
ip address 10.0.1.1/24
ipv6 address 2001:db8::1/64
!
ip forwarding
!

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tests/topotests/bgp_vpn_5549_route_map/pe2/bgpd.conf Normal file
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router bgp 65001
bgp router-id 10.10.10.20
no bgp ebgp-requires-policy
no bgp default ipv4-unicast
neighbor 2001:db8:1::1 remote-as internal
neighbor 2001:db8:1::1 update-source 2001:db8:1::2
neighbor 2001:db8:1::1 timers 1 3
neighbor 2001:db8:1::1 timers connect 1
neighbor 2001:db8:1::1 capability extended-nexthop
address-family ipv4 vpn
neighbor 2001:db8:1::1 activate
exit-address-family
!
router bgp 65001 vrf RED
bgp router-id 192.168.2.2
no bgp ebgp-requires-policy
neighbor 192.168.2.1 remote-as external
neighbor 192.168.2.1 timers 1 3
neighbor 192.168.2.1 timers connect 1
address-family ipv4 unicast
label vpn export 2222
rd vpn export 192.168.2.2:2
rt vpn import 192.168.2.2:2 192.168.1.2:2
rt vpn export 192.168.2.2:2
export vpn
import vpn
exit-address-family
!

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tests/topotests/bgp_vpn_5549_route_map/pe2/ldpd.conf Normal file
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mpls ldp
router-id 10.10.10.20
!
address-family ipv4
discovery transport-address 10.10.10.20
!
interface pe2-eth0
!
!
!

12
tests/topotests/bgp_vpn_5549_route_map/pe2/ospf6d.conf Normal file
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!
interface lo
ipv6 ospf6 area 0
!
interface pe2-eth0
ipv6 ospf6 area 0
ipv6 ospf6 hello-interval 1
ipv6 ospf6 dead-interval 3
!
router ospf6
ospf6 router-id 10.10.10.20
!

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tests/topotests/bgp_vpn_5549_route_map/pe2/zebra.conf Normal file
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!
interface lo
ip address 10.10.10.20/32
ipv6 address 2001:db8:1::2/128
!
interface pe2-eth1 vrf RED
ip address 192.168.2.2/24
!
interface pe2-eth0
ip address 10.0.1.2/24
ipv6 address 2001:db8::2/64
!
ip forwarding
!

138
tests/topotests/bgp_vpn_5549_route_map/test_bgp_vpn_5549_route_map.py Normal file
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#!/usr/bin/env python
#
# Copyright (c) 2022 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
# 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.
#
"""
Check if we can override VPN underlay next-hop from PE1 to PE2.
"""
import os
import sys
import json
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.common_config import step
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
tgen.add_router("cpe1")
tgen.add_router("cpe2")
tgen.add_router("pe1")
tgen.add_router("pe2")
switch = tgen.add_switch("s1")
switch.add_link(tgen.gears["cpe1"])
switch.add_link(tgen.gears["pe1"])
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["pe1"])
switch.add_link(tgen.gears["pe2"])
switch = tgen.add_switch("s3")
switch.add_link(tgen.gears["pe2"])
switch.add_link(tgen.gears["cpe2"])
def setup_module(mod):
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
pe1 = tgen.gears["pe1"]
pe2 = tgen.gears["pe2"]
pe1.run("ip link add RED type vrf table 1001")
pe1.run("ip link set up dev RED")
pe2.run("ip link add RED type vrf table 1001")
pe2.run("ip link set up dev RED")
pe1.run("ip link set pe1-eth0 master RED")
pe2.run("ip link set pe2-eth1 master RED")
pe1.run("sysctl -w net.ipv4.ip_forward=1")
pe2.run("sysctl -w net.ipv4.ip_forward=1")
pe1.run("sysctl -w net.mpls.conf.pe1-eth0.input=1")
pe2.run("sysctl -w net.mpls.conf.pe2-eth1.input=1")
router_list = tgen.routers()
for i, (rname, router) in enumerate(router_list.items(), 1):
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
router.load_config(
TopoRouter.RD_OSPF6, os.path.join(CWD, "{}/ospf6d.conf".format(rname))
)
router.load_config(
TopoRouter.RD_LDP, os.path.join(CWD, "{}/ldpd.conf".format(rname))
)
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_bgp_vpn_5549():
tgen = get_topogen()
pe2 = tgen.gears["pe2"]
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_vpn_nexthop_changed():
output = json.loads(pe2.vtysh_cmd("show bgp ipv4 vpn json"))
expected = {
"routes": {
"routeDistinguishers": {
"192.168.1.2:2": {
"172.16.255.1/32": [
{"valid": True, "nexthops": [{"ip": "2001:db8::1"}]}
],
"192.168.1.0/24": [
{"valid": True, "nexthops": [{"ip": "2001:db8:1::1"}]}
],
}
}
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_vpn_nexthop_changed)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed overriding IPv6 next-hop for VPN underlay"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))