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test_protocols_isis.py
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#!/usr/bin/env python3
#
# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.utils.process import process_named_running
from vyos.frrender import isis_daemon
base_path = ['protocols', 'isis']
domain = 'VyOS'
net = '49.0001.1921.6800.1002.00'
class TestProtocolsISIS(VyOSUnitTestSHIM.TestCase):
@classmethod
def setUpClass(cls):
cls._interfaces = Section.interfaces('ethernet')
# call base-classes classmethod
super(TestProtocolsISIS, cls).setUpClass()
# Retrieve FRR daemon PID - it is not allowed to crash, thus PID must remain the same
cls.daemon_pid = process_named_running(isis_daemon)
# ensure we can also run this test on a live system - so lets clean
# out the current configuration :)
cls.cli_delete(cls, base_path)
cls.cli_delete(cls, ['vrf'])
def tearDown(self):
# cleanup any possible VRF mess
self.cli_delete(['vrf'])
# always destrox the entire isisd configuration to make the processes
# life as hard as possible
self.cli_delete(base_path)
self.cli_commit()
# check process health and continuity
self.assertEqual(self.daemon_pid, process_named_running(isis_daemon))
def test_isis_01_redistribute(self):
prefix_list = 'EXPORT-ISIS'
route_map = 'EXPORT-ISIS'
rule = '10'
metric_style = 'transition'
redistribute = ['babel', 'bgp', 'connected', 'kernel', 'nhrp', 'ospf', 'rip', 'static']
self.cli_set(['policy', 'prefix-list', prefix_list, 'rule', rule, 'action', 'permit'])
self.cli_set(['policy', 'prefix-list', prefix_list, 'rule', rule, 'prefix', '203.0.113.0/24'])
self.cli_set(['policy', 'route-map', route_map, 'rule', rule, 'action', 'permit'])
self.cli_set(['policy', 'route-map', route_map, 'rule', rule, 'match', 'ip', 'address', 'prefix-list', prefix_list])
self.cli_set(base_path)
# verify() - net id and interface are mandatory
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['net', net])
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['redistribute', 'ipv4', 'connected'])
# verify() - Redistribute level-1 or level-2 should be specified
with self.assertRaises(ConfigSessionError):
self.cli_commit()
for proto in redistribute:
self.cli_set(base_path + ['redistribute', 'ipv4', proto, 'level-2', 'route-map', route_map])
self.cli_set(base_path + ['metric-style', metric_style])
self.cli_set(base_path + ['log-adjacency-changes'])
# Commit all changes
self.cli_commit()
# Verify all changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' metric-style {metric_style}', tmp)
self.assertIn(f' log-adjacency-changes', tmp)
for proto in redistribute:
self.assertIn(f' redistribute ipv4 {proto} level-2 route-map {route_map}', tmp)
for interface in self._interfaces:
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f' ip router isis {domain}', tmp)
self.assertIn(f' ipv6 router isis {domain}', tmp)
self.cli_delete(['policy', 'route-map', route_map])
self.cli_delete(['policy', 'prefix-list', prefix_list])
def test_isis_02_vrfs(self):
vrfs = ['red', 'green', 'blue']
# It is safe to assume that when the basic VRF test works, all other
# IS-IS related features work, as we entirely inherit the CLI templates
# and Jinja2 FRR template.
table = '1000'
vrf = 'red'
vrf_base = ['vrf', 'name', vrf]
vrf_iface = 'eth1'
self.cli_set(vrf_base + ['table', table])
self.cli_set(vrf_base + ['protocols', 'isis', 'net', net])
self.cli_set(vrf_base + ['protocols', 'isis', 'interface', vrf_iface])
self.cli_set(vrf_base + ['protocols', 'isis', 'advertise-high-metrics'])
self.cli_set(vrf_base + ['protocols', 'isis', 'advertise-passive-only'])
self.cli_set(['interfaces', 'ethernet', vrf_iface, 'vrf', vrf])
# Also set a default VRF IS-IS config
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', 'eth0'])
self.cli_commit()
# Verify FRR isisd configuration
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f'router isis {domain}', tmp)
self.assertIn(f' net {net}', tmp)
tmp = self.getFRRconfig(f'router isis {domain} vrf {vrf}', stop_section='^exit')
self.assertIn(f'router isis {domain} vrf {vrf}', tmp)
self.assertIn(f' net {net}', tmp)
self.assertIn(f' advertise-high-metrics', tmp)
self.assertIn(f' advertise-passive-only', tmp)
self.cli_delete(['vrf', 'name', vrf])
self.cli_delete(['interfaces', 'ethernet', vrf_iface, 'vrf'])
def test_isis_04_default_information(self):
metric = '50'
route_map = 'default-foo-'
self.cli_set(base_path + ['net', net])
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface])
for afi in ['ipv4', 'ipv6']:
for level in ['level-1', 'level-2']:
self.cli_set(base_path + ['default-information', 'originate', afi, level, 'always'])
self.cli_set(base_path + ['default-information', 'originate', afi, level, 'metric', metric])
self.cli_set(base_path + ['default-information', 'originate', afi, level, 'route-map', route_map + level + afi])
# Commit all changes
self.cli_commit()
# Verify all changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
for afi in ['ipv4', 'ipv6']:
for level in ['level-1', 'level-2']:
route_map_name = route_map + level + afi
self.assertIn(f' default-information originate {afi} {level} always route-map {route_map_name} metric {metric}', tmp)
def test_isis_05_password(self):
password = 'foo'
self.cli_set(base_path + ['net', net])
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface, 'password', 'plaintext-password', f'{password}-{interface}'])
self.cli_set(base_path + ['area-password', 'plaintext-password', password])
self.cli_set(base_path + ['area-password', 'md5', password])
self.cli_set(base_path + ['domain-password', 'plaintext-password', password])
self.cli_set(base_path + ['domain-password', 'md5', password])
# verify() - can not use both md5 and plaintext-password for area-password
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(base_path + ['area-password', 'md5', password])
# verify() - can not use both md5 and plaintext-password for domain-password
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_delete(base_path + ['domain-password', 'md5', password])
# Commit all changes
self.cli_commit()
# Verify all changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' domain-password clear {password}', tmp)
self.assertIn(f' area-password clear {password}', tmp)
for interface in self._interfaces:
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f' isis password clear {password}-{interface}', tmp)
def test_isis_06_spf_delay_bfd(self):
network = 'point-to-point'
holddown = '10'
init_delay = '50'
long_delay = '200'
short_delay = '100'
time_to_learn = '75'
bfd_profile = 'isis-bfd'
self.cli_set(base_path + ['net', net])
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface, 'network', network])
self.cli_set(base_path + ['interface', interface, 'bfd', 'profile', bfd_profile])
self.cli_set(base_path + ['spf-delay-ietf', 'holddown', holddown])
# verify() - All types of spf-delay must be configured
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['spf-delay-ietf', 'init-delay', init_delay])
# verify() - All types of spf-delay must be configured
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['spf-delay-ietf', 'long-delay', long_delay])
# verify() - All types of spf-delay must be configured
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['spf-delay-ietf', 'short-delay', short_delay])
# verify() - All types of spf-delay must be configured
with self.assertRaises(ConfigSessionError):
self.cli_commit()
self.cli_set(base_path + ['spf-delay-ietf', 'time-to-learn', time_to_learn])
# Commit all changes
self.cli_commit()
# Verify all changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' spf-delay-ietf init-delay {init_delay} short-delay {short_delay} long-delay {long_delay} holddown {holddown} time-to-learn {time_to_learn}', tmp)
for interface in self._interfaces:
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f' ip router isis {domain}', tmp)
self.assertIn(f' ipv6 router isis {domain}', tmp)
self.assertIn(f' isis network {network}', tmp)
self.assertIn(f' isis bfd', tmp)
self.assertIn(f' isis bfd profile {bfd_profile}', tmp)
def test_isis_07_segment_routing_configuration(self):
global_block_low = "300"
global_block_high = "399"
local_block_low = "400"
local_block_high = "499"
maximum_stack_size = '5'
prefix_one = '192.168.0.1/32'
prefix_two = '192.168.0.2/32'
prefix_three = '192.168.0.3/32'
prefix_four = '192.168.0.4/32'
prefix_one_value = '1'
prefix_two_value = '2'
prefix_three_value = '60000'
prefix_four_value = '65000'
self.cli_set(base_path + ['net', net])
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['segment-routing', 'maximum-label-depth', maximum_stack_size])
self.cli_set(base_path + ['segment-routing', 'global-block', 'low-label-value', global_block_low])
self.cli_set(base_path + ['segment-routing', 'global-block', 'high-label-value', global_block_high])
self.cli_set(base_path + ['segment-routing', 'local-block', 'low-label-value', local_block_low])
self.cli_set(base_path + ['segment-routing', 'local-block', 'high-label-value', local_block_high])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_one, 'index', 'value', prefix_one_value])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_one, 'index', 'explicit-null'])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_two, 'index', 'value', prefix_two_value])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_two, 'index', 'no-php-flag'])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_three, 'absolute', 'value', prefix_three_value])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_three, 'absolute', 'explicit-null'])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_four, 'absolute', 'value', prefix_four_value])
self.cli_set(base_path + ['segment-routing', 'prefix', prefix_four, 'absolute', 'no-php-flag'])
# Commit all changes
self.cli_commit()
# Verify all changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' segment-routing on', tmp)
self.assertIn(f' segment-routing global-block {global_block_low} {global_block_high} local-block {local_block_low} {local_block_high}', tmp)
self.assertIn(f' segment-routing node-msd {maximum_stack_size}', tmp)
self.assertIn(f' segment-routing prefix {prefix_one} index {prefix_one_value} explicit-null', tmp)
self.assertIn(f' segment-routing prefix {prefix_two} index {prefix_two_value} no-php-flag', tmp)
self.assertIn(f' segment-routing prefix {prefix_three} absolute {prefix_three_value} explicit-null', tmp)
self.assertIn(f' segment-routing prefix {prefix_four} absolute {prefix_four_value} no-php-flag', tmp)
def test_isis_08_ldp_sync(self):
holddown = "500"
interface = 'lo'
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['ldp-sync', 'holddown', holddown])
# Commit main ISIS changes
self.cli_commit()
# Verify main ISIS changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' mpls ldp-sync', tmp)
self.assertIn(f' mpls ldp-sync holddown {holddown}', tmp)
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface, 'ldp-sync', 'holddown', holddown])
# Commit interface changes for holddown
self.cli_commit()
for interface in self._interfaces:
# Verify interface changes for holddown
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f'interface {interface}', tmp)
self.assertIn(f' ip router isis {domain}', tmp)
self.assertIn(f' ipv6 router isis {domain}', tmp)
self.assertIn(f' isis mpls ldp-sync holddown {holddown}', tmp)
for interface in self._interfaces:
self.cli_set(base_path + ['interface', interface, 'ldp-sync', 'disable'])
# Commit interface changes for disable
self.cli_commit()
for interface in self._interfaces:
# Verify interface changes for disable
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f'interface {interface}', tmp)
self.assertIn(f' ip router isis {domain}', tmp)
self.assertIn(f' ipv6 router isis {domain}', tmp)
self.assertIn(f' no isis mpls ldp-sync', tmp)
def test_isis_09_lfa(self):
prefix_list = 'lfa-prefix-list-test-1'
prefix_list_address = '192.168.255.255/32'
interface = 'lo'
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
self.cli_set(['policy', 'prefix-list', prefix_list, 'rule', '1', 'action', 'permit'])
self.cli_set(['policy', 'prefix-list', prefix_list, 'rule', '1', 'prefix', prefix_list_address])
# Commit main ISIS changes
self.cli_commit()
# Add remote portion of LFA with prefix list with validation
for level in ['level-1', 'level-2']:
self.cli_set(base_path + ['fast-reroute', 'lfa', 'remote', 'prefix-list', prefix_list, level])
self.cli_commit()
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' fast-reroute remote-lfa prefix-list {prefix_list} {level}', tmp)
self.cli_delete(base_path + ['fast-reroute'])
self.cli_commit()
# Add local portion of LFA load-sharing portion with validation
for level in ['level-1', 'level-2']:
self.cli_set(base_path + ['fast-reroute', 'lfa', 'local', 'load-sharing', 'disable', level])
self.cli_commit()
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' fast-reroute load-sharing disable {level}', tmp)
self.cli_delete(base_path + ['fast-reroute'])
self.cli_commit()
# Add local portion of LFA priority-limit portion with validation
for priority in ['critical', 'high', 'medium']:
for level in ['level-1', 'level-2']:
self.cli_set(base_path + ['fast-reroute', 'lfa', 'local', 'priority-limit', priority, level])
self.cli_commit()
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' fast-reroute priority-limit {priority} {level}', tmp)
self.cli_delete(base_path + ['fast-reroute'])
self.cli_commit()
# Add local portion of LFA tiebreaker portion with validation
index = '100'
for tiebreaker in ['downstream','lowest-backup-metric','node-protecting']:
for level in ['level-1', 'level-2']:
self.cli_set(base_path + ['fast-reroute', 'lfa', 'local', 'tiebreaker', tiebreaker, 'index', index, level])
self.cli_commit()
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' fast-reroute lfa tiebreaker {tiebreaker} index {index} {level}', tmp)
self.cli_delete(base_path + ['fast-reroute'])
self.cli_commit()
# Clean up and remove prefix list
self.cli_delete(['policy', 'prefix-list', prefix_list])
self.cli_commit()
def test_isis_10_topology(self):
topologies = ['ipv4-multicast', 'ipv4-mgmt', 'ipv6-unicast', 'ipv6-multicast', 'ipv6-mgmt']
interface = 'lo'
# Set a basic IS-IS config
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
for topology in topologies:
self.cli_set(base_path + ['topology', topology])
self.cli_commit()
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' topology {topology}', tmp)
def test_isis_11_srv6(self):
locator = "TEST"
interface = 'lo'
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
self.cli_set(base_path + ['segment-routing', 'srv6', 'locator', locator])
# Commit main ISIS changes
self.cli_commit()
# Verify main ISIS changes
tmp = self.getFRRconfig(f'router isis {domain}', stop_section='^exit')
self.assertIn(f' net {net}', tmp)
self.assertIn(f' segment-routing srv6', tmp)
self.assertIn(f' locator {locator}', tmp)
# Commit for isis
self.cli_commit()
def test_isis_12_frr_interface_lfa_remotelfa(self):
interface = 'eth0'
rla_metric = '10'
frr_interface_base_path = base_path + ['interface', interface, 'fast-reroute']
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
self.cli_set(frr_interface_base_path + ['lfa', 'level-1', 'enable'])
self.cli_set(frr_interface_base_path + ['lfa', 'level-1', 'exclude',
'interface', interface])
self.cli_set(frr_interface_base_path + ['remote-lfa', 'level-1',
'maximum-metric', rla_metric])
self.cli_set(frr_interface_base_path + ['remote-lfa', 'level-1',
'tunnel', 'mpls-ldp'])
# Commit main ISIS changes
self.cli_commit()
# Verify interface ISIS changes
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f' isis fast-reroute lfa level-1', tmp)
self.assertIn(f' isis fast-reroute lfa level-1 exclude interface {interface}', tmp)
self.assertIn(f' isis fast-reroute remote-lfa maximum-metric {rla_metric} level-1', tmp)
self.assertIn(f' isis fast-reroute remote-lfa tunnel mpls-ldp level-1', tmp)
def test_isis_13_frr_interface_tilfa(self):
interface = 'eth0'
frr_interface_base_path = base_path + ['interface', interface, 'fast-reroute']
self.cli_set(base_path + ['net', net])
self.cli_set(base_path + ['interface', interface])
self.cli_set(frr_interface_base_path + ['ti-lfa', 'level-1', 'node-protection',
'link-fallback'])
# Commit main ISIS changes
self.cli_commit()
# Verify interface ISIS changes
tmp = self.getFRRconfig(f'interface {interface}', stop_section='^exit')
self.assertIn(f' isis fast-reroute ti-lfa level-1 node-protection link-fallback', tmp)
if __name__ == '__main__':
unittest.main(verbosity=2, failfast=VyOSUnitTestSHIM.TestCase.debug_on())

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