topotests: new BFD test for multi hop features

Add a new test to cover the new features for multi hop BFD peers:

- Test that we correctly receive TTL from protocol integration.
- Check minimum TTL usage and 'show' command.
- Check for passive mode.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2020-08-11 21:19:49 -03:00
parent 360d6ca513
commit 39bea45c19
20 changed files with 669 additions and 0 deletions

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[
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"local": "2001:db8:1::1",
"minimum-ttl": 253,
"multihop": true,
"passive-mode": true,
"peer": "2001:db8:3::1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r1-eth0",
"local": "2001:db8:1::1",
"multihop": false,
"passive-mode": true,
"peer": "2001:db8:1::2",
"receive-interval": 600,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 600,
"remote-transmit-interval": 600,
"status": "up",
"transmit-interval": 600,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"local": "192.168.1.1",
"minimum-ttl": 254,
"multihop": true,
"passive-mode": true,
"peer": "192.168.2.1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
}
]

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!
debug bfd network
debug bfd peer
debug bfd zebra
!
bfd
profile fast-tx
receive-interval 600
transmit-interval 600
passive-mode
!
profile slow-tx
receive-interval 2000
transmit-interval 2000
passive-mode
!
!

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router bgp 100
no bgp ebgp-requires-policy
neighbor 2001:db8:1::2 remote-as internal
neighbor 2001:db8:1::2 bfd profile fast-tx
neighbor 192.168.2.1 remote-as external
neighbor 192.168.2.1 ebgp-multihop 2
neighbor 192.168.2.1 bfd profile slow-tx
neighbor 2001:db8:3::1 remote-as external
neighbor 2001:db8:3::1 ebgp-multihop 3
neighbor 2001:db8:3::1 bfd profile slow-tx
address-family ipv4 unicast
redistribute connected
exit-address-family
address-family ipv6 unicast
redistribute connected
neighbor 2001:db8:1::2 activate
neighbor 192.168.2.1 activate
neighbor 2001:db8:3::1 activate
exit-address-family
!

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ip forwarding
ipv6 forwarding
!
interface lo
ip address 10.254.254.1/32
!
interface r1-eth0
ip address 192.168.1.1/24
ipv6 address 2001:db8:1::1/64
!

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[
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r2-eth0",
"local": "2001:db8:1::2",
"multihop": false,
"passive-mode": false,
"peer": "2001:db8:1::1",
"receive-interval": 600,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 600,
"remote-transmit-interval": 600,
"status": "up",
"transmit-interval": 600,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r2-eth1",
"local": "2001:db8:2::2",
"multihop": false,
"passive-mode": false,
"peer": "2001:db8:2::1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
}
]

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!
debug bfd network
debug bfd peer
debug bfd zebra
!
bfd
profile fast-tx
receive-interval 600
transmit-interval 600
!
profile slow-tx
receive-interval 2000
transmit-interval 2000
!
!

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router bgp 100
no bgp ebgp-requires-policy
neighbor 2001:db8:1::1 remote-as internal
neighbor 2001:db8:1::1 bfd profile fast-tx
neighbor 2001:db8:2::1 remote-as external
neighbor 2001:db8:2::1 bfd profile slow-tx
address-family ipv4 unicast
redistribute connected
exit-address-family
address-family ipv6 unicast
redistribute connected
neighbor 2001:db8:1::1 activate
neighbor 2001:db8:2::1 activate
exit-address-family
!

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ip forwarding
ipv6 forwarding
!
interface lo
ip address 10.254.254.2/32
!
interface r2-eth0
ip address 192.168.1.2/24
ipv6 address 2001:db8:1::2/64
!
interface r2-eth1
ip address 192.168.2.2/24
ipv6 address 2001:db8:2::2/64
!

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[
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r3-eth1",
"local": "2001:db8:3::2",
"multihop": false,
"passive-mode": false,
"peer": "2001:db8:3::1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r3-eth0",
"local": "2001:db8:2::1",
"multihop": false,
"passive-mode": false,
"peer": "2001:db8:2::2",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"local": "192.168.2.1",
"minimum-ttl": 254,
"multihop": true,
"passive-mode": false,
"peer": "192.168.1.1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
}
]

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!
debug bfd network
debug bfd peer
debug bfd zebra
!
bfd
profile slow-tx
receive-interval 2000
transmit-interval 2000
!
!

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router bgp 300
no bgp ebgp-requires-policy
neighbor 192.168.1.1 remote-as external
neighbor 192.168.1.1 ebgp-multihop 2
neighbor 192.168.1.1 bfd profile slow-tx
neighbor 2001:db8:2::2 remote-as external
neighbor 2001:db8:2::2 bfd profile slow-tx
neighbor 2001:db8:3::1 remote-as external
neighbor 2001:db8:3::1 bfd profile slow-tx
address-family ipv4 unicast
redistribute connected
exit-address-family
address-family ipv6 unicast
redistribute connected
neighbor 192.168.1.1 activate
neighbor 2001:db8:2::2 activate
neighbor 2001:db8:3::1 activate
exit-address-family
!

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ip forwarding
ipv6 forwarding
!
interface lo
ip address 10.254.254.3/32
!
interface r3-eth0
ip address 192.168.2.1/24
ipv6 address 2001:db8:2::1/64
!
interface r3-eth1
ip address 192.168.3.2/24
ipv6 address 2001:db8:3::2/64
!

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[
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"local": "2001:db8:3::1",
"minimum-ttl": 253,
"multihop": true,
"passive-mode": false,
"peer": "2001:db8:1::1",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
},
{
"detect-multiplier": 3,
"diagnostic": "ok",
"echo-interval": 0,
"id": "*",
"interface": "r4-eth0",
"local": "2001:db8:3::1",
"multihop": false,
"passive-mode": false,
"peer": "2001:db8:3::2",
"receive-interval": 2000,
"remote-detect-multiplier": 3,
"remote-diagnostic": "ok",
"remote-echo-interval": 50,
"remote-id": "*",
"remote-receive-interval": 2000,
"remote-transmit-interval": 2000,
"status": "up",
"transmit-interval": 2000,
"uptime": "*",
"vrf": "default"
}
]

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!
debug bfd network
debug bfd peer
debug bfd zebra
!
bfd
profile slow-tx
receive-interval 2000
transmit-interval 2000
!
profile slow-tx-mh
receive-interval 2000
transmit-interval 2000
minimum-ttl 250
!
!

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router bgp 400
no bgp ebgp-requires-policy
neighbor 2001:db8:3::2 remote-as external
neighbor 2001:db8:3::2 bfd profile slow-tx
neighbor 2001:db8:1::1 remote-as external
neighbor 2001:db8:1::1 ebgp-multihop 3
neighbor 2001:db8:1::1 bfd profile slow-tx-mh
address-family ipv4 unicast
redistribute connected
exit-address-family
address-family ipv6 unicast
redistribute connected
neighbor 2001:db8:1::1 activate
neighbor 2001:db8:3::2 activate
exit-address-family
!

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ip forwarding
ipv6 forwarding
!
interface lo
ip address 10.254.254.4/32
!
interface r4-eth0
ip address 192.168.3.1/24
ipv6 address 2001:db8:3::1/64
!

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## Color coding:
#########################
## Main FRR: #f08080 red
## Switches: #d0e0d0 gray
## RIP: #19e3d9 Cyan
## RIPng: #fcb314 dark yellow
## OSPFv2: #32b835 Green
## OSPFv3: #19e3d9 Cyan
## ISIS IPv4 #fcb314 dark yellow
## ISIS IPv6 #9a81ec purple
## BGP IPv4 #eee3d3 beige
## BGP IPv6 #fdff00 yellow
##### Colors (see http://www.color-hex.com/)
graph template {
label="bfd-topo3";
# Routers
r1 [
shape=doubleoctagon,
label="r1",
fillcolor="#f08080",
style=filled,
];
r2 [
shape=doubleoctagon
label="r2",
fillcolor="#f08080",
style=filled,
];
r3 [
shape=doubleoctagon
label="r3",
fillcolor="#f08080",
style=filled,
];
r4 [
shape=doubleoctagon
label="r4",
fillcolor="#f08080",
style=filled,
];
# Switches
sw1 [
shape=oval,
label="sw1\n192.168.1.0/24\n2001:db8:1::/64",
fillcolor="#d0e0d0",
style=filled,
];
sw2 [
shape=oval,
label="sw2\n192.168.2.0/24\n2001:db8:2::/64",
fillcolor="#d0e0d0",
style=filled,
];
sw3 [
shape=oval,
label="sw3\n192.168.3.0/24\n2001:db8:3::/64",
fillcolor="#d0e0d0",
style=filled,
];
# Connections
r1 -- sw1 [label="eth0\n.1"];
r2 -- sw1 [label="eth0\n.2"];
r3 -- sw2 [label="eth0\n.1"];
r2 -- sw2 [label="eth1\n.2"];
r4 -- sw3 [label="eth0\n.1"];
r3 -- sw3 [label="eth2\n.2"];
}

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#!/usr/bin/env python
#
# test_bfd_topo3.py
# Part of NetDEF Topology Tests
#
# Copyright (c) 2020 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_topo3.py: Test the FRR BFD daemon multi hop.
"""
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["r3"])
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():
daemon_file = "{}/{}/bfdd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BFD, daemon_file)
daemon_file = "{}/{}/zebra.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_ZEBRA, daemon_file)
daemon_file = "{}/{}/bgpd.conf".format(CWD, rname)
if os.path.isfile(daemon_file):
router.load_config(TopoRouter.RD_BGP, daemon_file)
# Initialize all routers.
tgen.start_router()
def test_wait_bgp_convergence():
"Wait for BGP to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("waiting for protocols to converge")
def expect_loopback_route(router, iptype, route, proto):
"Wait until route is present on RIB for protocol."
logger.info('waiting route {} in {}'.format(route, router))
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
'show {} route json'.format(iptype),
{ route: [{ 'protocol': proto }] }
)
_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
assertmsg = '"{}" OSPF convergence failure'.format(router)
assert result is None, assertmsg
# Wait for R1 <-> R2 convergence.
expect_loopback_route('r1', 'ip', '10.254.254.2/32', 'bgp')
# Wait for R1 <-> R3 convergence.
expect_loopback_route('r1', 'ip', '10.254.254.3/32', 'bgp')
# Wait for R1 <-> R4 convergence.
expect_loopback_route('r1', 'ip', '10.254.254.4/32', 'bgp')
# Wait for R2 <-> R1 convergence.
expect_loopback_route('r2', 'ip', '10.254.254.1/32', 'bgp')
# Wait for R2 <-> R3 convergence.
expect_loopback_route('r2', 'ip', '10.254.254.3/32', 'bgp')
# Wait for R2 <-> R4 convergence.
expect_loopback_route('r2', 'ip', '10.254.254.4/32', 'bgp')
# Wait for R3 <-> R1 convergence.
expect_loopback_route('r3', 'ip', '10.254.254.1/32', 'bgp')
# Wait for R3 <-> R2 convergence.
expect_loopback_route('r3', 'ip', '10.254.254.2/32', 'bgp')
# Wait for R3 <-> R4 convergence.
expect_loopback_route('r3', 'ip', '10.254.254.4/32', 'bgp')
# Wait for R4 <-> R1 convergence.
expect_loopback_route('r4', 'ip', '10.254.254.1/32', 'bgp')
# Wait for R4 <-> R2 convergence.
expect_loopback_route('r4', 'ip', '10.254.254.2/32', 'bgp')
# Wait for R4 <-> R3 convergence.
expect_loopback_route('r4', 'ip', '10.254.254.3/32', 'bgp')
def test_wait_bfd_convergence():
"Wait for BFD to converge"
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
logger.info("test BFD configurations")
def expect_bfd_configuration(router):
"Load JSON file and compare with 'show bfd peer json'"
logger.info('waiting BFD configuration on router {}'.format(router))
bfd_config = json.loads(open('{}/{}/bfd-peers.json'.format(CWD, router)).read())
test_func = partial(
topotest.router_json_cmp,
tgen.gears[router],
'show bfd peers json',
bfd_config
)
_, result = topotest.run_and_expect(test_func, None, count=130, wait=1)
assertmsg = '"{}" BFD configuration failure'.format(router)
assert result is None, assertmsg
expect_bfd_configuration('r1')
expect_bfd_configuration('r2')
expect_bfd_configuration('r3')
expect_bfd_configuration('r4')
def teardown_module(_mod):
"Teardown the pytest environment"
tgen = get_topogen()
tgen.stop_topology()
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))