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test_bgp_disable_addpath_rx.py
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test_bgp_disable_addpath_rx.py
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# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2022 Nathan Mangar
"""
Test if AddPath RX direction is not negotiated via AddPath capability.
"""
__topotests_file__ = "bgp_disable_addpath_rx/test_disable_addpath_rx.py"
__topotests_gitrev__ = "e82b531df94b9fd7bc456df8a1b7c58f2770eff9"
# pylint: disable=invalid-name, missing-class-docstring, missing-function-docstring, line-too-long, consider-using-f-string, wildcard-import, unused-wildcard-import, f-string-without-interpolation, too-few-public-methods
from topotato import *
@topology_fixture()
def topology(topo):
"""
[ r1 ]
|
{ s1 } [ r3 ]
| |
[ r2 ]--{ s2 }
|
[ r4 ]
"""
topo.router("r3").lo_ip4.append("172.16.16.254/32")
topo.router("r4").lo_ip4.append("172.16.16.254/32")
topo.router("r1").iface_to("s1").ip4.append("192.168.1.1/24")
topo.router("r2").iface_to("s1").ip4.append("192.168.1.2/24")
topo.router("r2").iface_to("s2").ip4.append("192.168.2.2/24")
topo.router("r3").iface_to("s2").ip4.append("192.168.2.3/24")
topo.router("r4").iface_to("s2").ip4.append("192.168.2.4/24")
class Configs(FRRConfigs):
routers = ["r1", "r2", "r3", "r4"]
zebra = """
#% extends "boilerplate.conf"
#% block main
#% if router.name == 'r3'
interface lo
ip address {{ routers.r3.lo_ip4[0] }}
!
#% elif router.name == 'r4'
interface lo
ip address {{ routers.r4.lo_ip4[0] }}
!
#% endif
#% for iface in router.ifaces
interface {{ iface.ifname }}
ip address {{ iface.ip4[0] }}
!
#% endfor
ip forwarding
!
#% endblock
"""
bgpd = """
#% block main
#% if router.name == 'r1'
router bgp 65001
timers bgp 3 10
no bgp ebgp-requires-policy
neighbor {{ routers.r2.iface_to('s1').ip4[0].ip }} remote-as external
neighbor {{ routers.r2.iface_to('s1').ip4[0].ip }} timers connect 5
address-family ipv4 unicast
neighbor {{ routers.r2.iface_to('s1').ip4[0].ip }} disable-addpath-rx
!
#% elif router.name == 'r2'
router bgp 65002
timers bgp 3 10
no bgp ebgp-requires-policy
neighbor {{ routers.r1.iface_to('s1').ip4[0].ip }} remote-as external
neighbor {{ routers.r1.iface_to('s1').ip4[0].ip }} timers connect 5
neighbor {{ routers.r3.iface_to('s2').ip4[0].ip }} remote-as external
neighbor {{ routers.r3.iface_to('s2').ip4[0].ip }} timers connect 5
neighbor {{ routers.r4.iface_to('s2').ip4[0].ip }} remote-as external
neighbor {{ routers.r4.iface_to('s2').ip4[0].ip }} timers connect 5
address-family ipv4 unicast
neighbor {{ routers.r1.iface_to('s1').ip4[0].ip }} addpath-tx-all-paths
!
#% elif router.name == 'r3'
router bgp 65003
timers bgp 3 10
no bgp ebgp-requires-policy
neighbor {{ routers.r2.iface_to('s2').ip4[0].ip }} remote-as external
neighbor {{ routers.r2.iface_to('s2').ip4[0].ip }} timers connect 5
address-family ipv4 unicast
redistribute connected
!
#% elif router.name == 'r4'
router bgp 65004
timers bgp 3 10
no bgp ebgp-requires-policy
neighbor {{ routers.r2.iface_to('s2').ip4[0].ip }} remote-as external
neighbor {{ routers.r2.iface_to('s2').ip4[0].ip }} timers connect 5
address-family ipv4 unicast
redistribute connected
!
#% endif
#% endblock
"""
class BGPDisableAddpathRx(TestBase, AutoFixture, topo=topology, configs=Configs):
@topotatofunc
def check_bgp_advertised_routes(self, _, r1, r2):
expected = {
"advertisedRoutes": {
"172.16.16.254/32": {
"addrPrefix": "172.16.16.254",
"prefixLen": 32,
},
"192.168.2.0/24": {
"addrPrefix": "192.168.2.0",
"prefixLen": 24,
},
},
"totalPrefixCounter": 2,
}
yield from AssertVtysh.make(
r2,
"bgpd",
f"show bgp ipv4 unicast neighbor {r1.iface_to('s1').ip4[0].ip} advertised-routes json",
maxwait=2.0,
compare=expected,
)
@topotatofunc
def check_bgp_disabled_addpath_rx(self, _, r1, r2):
expected = {
str(r2.iface_to("s1").ip4[0].ip): {
"bgpState": "Established",
"neighborCapabilities": {
"addPath": {
"ipv4Unicast": {"txReceived": True, "rxReceived": True}
},
},
"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
}
}
yield from AssertVtysh.make(
r1,
"bgpd",
f"show bgp neighbor {r2.iface_to('s1').ip4[0].ip} json",
maxwait=2.0,
compare=expected,
)