#!/usr/bin/env python3 # # Copyright (C) 2021 VyOS maintainers and contributors # # 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 . import os import unittest from vyos.configsession import ConfigSession from vyos.configsession import ConfigSessionError from vyos.util import cmd from vyos.util import process_named_running PROCESS_NAME = 'bgpd' ASN = '64512' base_path = ['protocols', 'bgp', ASN] route_map_in = 'foo-map-in' route_map_out = 'foo-map-out' prefix_list_in = 'pfx-foo-in' prefix_list_out = 'pfx-foo-out' neighbor_config = { '192.0.2.1' : { 'cap_dynamic' : '', 'cap_ext_next' : '', 'remote_as' : '100', 'adv_interv' : '400', 'passive' : '', 'password' : 'VyOS-Secure123', 'shutdown' : '', 'cap_over' : '', 'ttl_security' : '5', 'local_as' : '300', 'route_map_in' : route_map_in, 'route_map_out': route_map_out, }, '192.0.2.2' : { 'remote_as' : '200', 'shutdown' : '', 'no_cap_nego' : '', 'port' : '667', 'cap_strict' : '', 'pfx_list_in' : prefix_list_in, 'pfx_list_out' : prefix_list_out, }, '192.0.2.3' : { 'description' : 'foo bar baz', 'remote_as' : '200', 'passive' : '', 'multi_hop' : '5', 'update_src' : 'lo', }, } peer_group_config = { 'foo' : { 'remote_as' : '100', 'passive' : '', 'password' : 'VyOS-Secure123', 'shutdown' : '', 'cap_over' : '', # XXX: not available in current Perl backend # 'ttl_security': '5', }, 'bar' : { 'description' : 'foo peer bar group', 'remote_as' : '200', 'shutdown' : '', 'no_cap_nego' : '', 'local_as' : '300', 'pfx_list_in' : prefix_list_in, 'pfx_list_out' : prefix_list_out, }, 'baz' : { 'cap_dynamic' : '', 'cap_ext_next' : '', 'remote_as' : '200', 'passive' : '', 'multi_hop' : '5', 'update_src' : 'lo', 'route_map_in' : route_map_in, 'route_map_out': route_map_out, }, } def getFRRBGPconfig(): return cmd(f'vtysh -c "show run" | sed -n "/router bgp {ASN}/,/^!/p"') def getFRRRPKIconfig(): return cmd(f'vtysh -c "show run" | sed -n "/rpki/,/^!/p"') class TestProtocolsBGP(unittest.TestCase): def setUp(self): self.session = ConfigSession(os.getpid()) self.session.set(['policy', 'route-map', route_map_in, 'rule', '10', 'action', 'permit']) self.session.set(['policy', 'route-map', route_map_out, 'rule', '10', 'action', 'permit']) self.session.set(['policy', 'prefix-list', prefix_list_in, 'rule', '10', 'action', 'permit']) self.session.set(['policy', 'prefix-list', prefix_list_in, 'rule', '10', 'prefix', '192.0.2.0/25']) self.session.set(['policy', 'prefix-list', prefix_list_out, 'rule', '10', 'action', 'permit']) self.session.set(['policy', 'prefix-list', prefix_list_out, 'rule', '10', 'prefix', '192.0.2.128/25']) def tearDown(self): self.session.delete(['policy', 'route-map', route_map_in]) self.session.delete(['policy', 'route-map', route_map_out]) self.session.delete(['policy', 'prefix-list', prefix_list_in]) self.session.delete(['policy', 'prefix-list', prefix_list_out]) self.session.delete(base_path) self.session.commit() del self.session # Check for running process self.assertTrue(process_named_running(PROCESS_NAME)) def verify_frr_config(self, peer, peer_config, frrconfig): # recurring patterns to verify for both a simple neighbor and a peer-group if 'cap_dynamic' in peer_config: self.assertIn(f' neighbor {peer} capability dynamic', frrconfig) if 'cap_ext_next' in peer_config: self.assertIn(f' neighbor {peer} capability extended-nexthop', frrconfig) if 'description' in peer_config: self.assertIn(f' neighbor {peer} description {peer_config["description"]}', frrconfig) if 'no_cap_nego' in peer_config: self.assertIn(f' neighbor {peer} dont-capability-negotiate', frrconfig) if 'multi_hop' in peer_config: self.assertIn(f' neighbor {peer} ebgp-multihop {peer_config["multi_hop"]}', frrconfig) if 'local_as' in peer_config: self.assertIn(f' neighbor {peer} local-as {peer_config["local_as"]}', frrconfig) if 'cap_over' in peer_config: self.assertIn(f' neighbor {peer} override-capability', frrconfig) if 'passive' in peer_config: self.assertIn(f' neighbor {peer} passive', frrconfig) if 'password' in peer_config: self.assertIn(f' neighbor {peer} password {peer_config["password"]}', frrconfig) if 'remote_as' in peer_config: self.assertIn(f' neighbor {peer} remote-as {peer_config["remote_as"]}', frrconfig) if 'shutdown' in peer_config: self.assertIn(f' neighbor {peer} shutdown', frrconfig) if 'ttl_security' in peer_config: self.assertIn(f' neighbor {peer} ttl-security hops {peer_config["ttl_security"]}', frrconfig) if 'update_src' in peer_config: self.assertIn(f' neighbor {peer} update-source {peer_config["update_src"]}', frrconfig) if 'route_map_in' in peer_config: self.assertIn(f' neighbor {peer} route-map {peer_config["route_map_in"]} in', frrconfig) if 'route_map_out' in peer_config: self.assertIn(f' neighbor {peer} route-map {peer_config["route_map_out"]} out', frrconfig) if 'pfx_list_in' in peer_config: self.assertIn(f' neighbor {peer} prefix-list {peer_config["pfx_list_in"]} in', frrconfig) if 'pfx_list_out' in peer_config: self.assertIn(f' neighbor {peer} prefix-list {peer_config["pfx_list_out"]} out', frrconfig) def test_bgp_01_simple(self): router_id = '127.0.0.1' local_pref = '500' self.session.set(base_path + ['parameters', 'router-id', router_id]) self.session.set(base_path + ['parameters', 'log-neighbor-changes']) # Default local preference (higher=more preferred) self.session.set(base_path + ['parameters', 'default', 'local-pref', local_pref]) # Deactivate IPv4 unicast for a peer by default self.session.set(base_path + ['parameters', 'default', 'no-ipv4-unicast']) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) self.assertIn(f' bgp router-id {router_id}', frrconfig) self.assertIn(f' bgp log-neighbor-changes', frrconfig) self.assertIn(f' bgp default local-preference {local_pref}', frrconfig) self.assertIn(f' no bgp default ipv4-unicast', frrconfig) def test_bgp_02_neighbors(self): # Test out individual neighbor configuration items, not all of them are # also available to a peer-group! for neighbor, config in neighbor_config.items(): if 'adv_interv' in config: self.session.set(base_path + ['neighbor', neighbor, 'advertisement-interval', config["adv_interv"]]) if 'cap_dynamic' in config: self.session.set(base_path + ['neighbor', neighbor, 'capability', 'dynamic']) if 'cap_ext_next' in config: self.session.set(base_path + ['neighbor', neighbor, 'capability', 'extended-nexthop']) if 'description' in config: self.session.set(base_path + ['neighbor', neighbor, 'description', config["description"]]) if 'no_cap_nego' in config: self.session.set(base_path + ['neighbor', neighbor, 'disable-capability-negotiation']) if 'multi_hop' in config: self.session.set(base_path + ['neighbor', neighbor, 'ebgp-multihop', config["multi_hop"]]) if 'local_as' in config: self.session.set(base_path + ['neighbor', neighbor, 'local-as', config["local_as"]]) if 'cap_over' in config: self.session.set(base_path + ['neighbor', neighbor, 'override-capability']) if 'passive' in config: self.session.set(base_path + ['neighbor', neighbor, 'passive']) if 'password' in config: self.session.set(base_path + ['neighbor', neighbor, 'password', config["password"]]) if 'port' in config: self.session.set(base_path + ['neighbor', neighbor, 'port', config["port"]]) if 'remote_as' in config: self.session.set(base_path + ['neighbor', neighbor, 'remote-as', config["remote_as"]]) if 'cap_strict' in config: self.session.set(base_path + ['neighbor', neighbor, 'strict-capability-match']) if 'shutdown' in config: self.session.set(base_path + ['neighbor', neighbor, 'shutdown']) if 'ttl_security' in config: self.session.set(base_path + ['neighbor', neighbor, 'ttl-security', 'hops', config["ttl_security"]]) if 'update_src' in config: self.session.set(base_path + ['neighbor', neighbor, 'update-source', config["update_src"]]) if 'route_map_in' in config: self.session.set(base_path + ['neighbor', neighbor, 'address-family', 'ipv4-unicast', 'route-map', 'import', config["route_map_in"]]) if 'route_map_out' in config: self.session.set(base_path + ['neighbor', neighbor, 'address-family', 'ipv4-unicast', 'route-map', 'export', config["route_map_out"]]) if 'pfx_list_in' in config: self.session.set(base_path + ['neighbor', neighbor, 'address-family', 'ipv4-unicast', 'prefix-list', 'import', config["pfx_list_in"]]) if 'pfx_list_out' in config: self.session.set(base_path + ['neighbor', neighbor, 'address-family', 'ipv4-unicast', 'prefix-list', 'export', config["pfx_list_out"]]) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) for peer, peer_config in neighbor_config.items(): if 'adv_interv' in config: self.assertIn(f' neighbor {peer} advertisement-interval {peer_config["adv_interv"]}', frrconfig) if 'port' in config: self.assertIn(f' neighbor {peer} port {peer_config["port"]}', frrconfig) if 'cap_strict' in config: self.assertIn(f' neighbor {peer} strict-capability-match', frrconfig) self.verify_frr_config(peer, peer_config, frrconfig) def test_bgp_03_peer_groups(self): # Test out individual peer-group configuration items for peer_group, config in peer_group_config.items(): if 'cap_dynamic' in config: self.session.set(base_path + ['peer-group', peer_group, 'capability', 'dynamic']) if 'cap_ext_next' in config: self.session.set(base_path + ['peer-group', peer_group, 'capability', 'extended-nexthop']) if 'description' in config: self.session.set(base_path + ['peer-group', peer_group, 'description', config["description"]]) if 'no_cap_nego' in config: self.session.set(base_path + ['peer-group', peer_group, 'disable-capability-negotiation']) if 'multi_hop' in config: self.session.set(base_path + ['peer-group', peer_group, 'ebgp-multihop', config["multi_hop"]]) if 'local_as' in config: self.session.set(base_path + ['peer-group', peer_group, 'local-as', config["local_as"]]) if 'cap_over' in config: self.session.set(base_path + ['peer-group', peer_group, 'override-capability']) if 'passive' in config: self.session.set(base_path + ['peer-group', peer_group, 'passive']) if 'password' in config: self.session.set(base_path + ['peer-group', peer_group, 'password', config["password"]]) if 'remote_as' in config: self.session.set(base_path + ['peer-group', peer_group, 'remote-as', config["remote_as"]]) if 'shutdown' in config: self.session.set(base_path + ['peer-group', peer_group, 'shutdown']) if 'ttl_security' in config: self.session.set(base_path + ['peer-group', peer_group, 'ttl-security', 'hops', config["ttl_security"]]) if 'update_src' in config: self.session.set(base_path + ['peer-group', peer_group, 'update-source', config["update_src"]]) if 'route_map_in' in config: self.session.set(base_path + ['peer-group', peer_group, 'address-family', 'ipv4-unicast', 'route-map', 'import', config["route_map_in"]]) if 'route_map_out' in config: self.session.set(base_path + ['peer-group', peer_group, 'address-family', 'ipv4-unicast', 'route-map', 'export', config["route_map_out"]]) if 'pfx_list_in' in config: self.session.set(base_path + ['peer-group', peer_group, 'address-family', 'ipv4-unicast', 'prefix-list', 'import', config["pfx_list_in"]]) if 'pfx_list_out' in config: self.session.set(base_path + ['peer-group', peer_group, 'address-family', 'ipv4-unicast', 'prefix-list', 'export', config["pfx_list_out"]]) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) for peer, peer_config in peer_group_config.items(): self.assertIn(f' neighbor {peer_group} peer-group', frrconfig) self.verify_frr_config(peer, peer_config, frrconfig) def test_bgp_04_afi_ipv4(self): networks = { '10.0.0.0/8' : { 'as_set' : '', }, '100.64.0.0/10' : { 'as_set' : '', }, '192.168.0.0/16' : { 'summary_only' : '', }, } # We want to redistribute ... redistributes = ['connected', 'kernel', 'ospf', 'rip', 'static'] for redistribute in redistributes: self.session.set(base_path + ['address-family', 'ipv4-unicast', 'redistribute', redistribute]) for network, network_config in networks.items(): self.session.set(base_path + ['address-family', 'ipv4-unicast', 'network', network]) if 'as_set' in network_config: self.session.set(base_path + ['address-family', 'ipv4-unicast', 'aggregate-address', network, 'as-set']) if 'summary_only' in network_config: self.session.set(base_path + ['address-family', 'ipv4-unicast', 'aggregate-address', network, 'summary-only']) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) self.assertIn(f' address-family ipv4 unicast', frrconfig) for redistribute in redistributes: self.assertIn(f' redistribute {redistribute}', frrconfig) for network, network_config in networks.items(): self.assertIn(f' network {network}', frrconfig) if 'as_set' in network_config: self.assertIn(f' aggregate-address {network} as-set', frrconfig) if 'summary_only' in network_config: self.assertIn(f' aggregate-address {network} summary-only', frrconfig) def test_bgp_05_afi_ipv6(self): networks = { '2001:db8:100::/48' : { }, '2001:db8:200::/48' : { }, '2001:db8:300::/48' : { 'summary_only' : '', }, } # We want to redistribute ... redistributes = ['connected', 'kernel', 'ospfv3', 'ripng', 'static'] for redistribute in redistributes: self.session.set(base_path + ['address-family', 'ipv6-unicast', 'redistribute', redistribute]) for network, network_config in networks.items(): self.session.set(base_path + ['address-family', 'ipv6-unicast', 'network', network]) if 'summary_only' in network_config: self.session.set(base_path + ['address-family', 'ipv6-unicast', 'aggregate-address', network, 'summary-only']) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) self.assertIn(f' address-family ipv6 unicast', frrconfig) for redistribute in redistributes: # FRR calls this OSPF6 if redistribute == 'ospfv3': redistribute = 'ospf6' self.assertIn(f' redistribute {redistribute}', frrconfig) for network, network_config in networks.items(): self.assertIn(f' network {network}', frrconfig) if 'as_set' in network_config: self.assertIn(f' aggregate-address {network} summary-only', frrconfig) def test_bgp_06_listen_range(self): # Implemented via T1875 limit = '64' listen_ranges = ['192.0.2.0/25', '192.0.2.128/25'] peer_group = 'listenfoobar' self.session.set(base_path + ['listen', 'limit', limit]) for prefix in listen_ranges: self.session.set(base_path + ['listen', 'range', prefix]) # check validate() - peer-group must be defined for range/prefix with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(base_path + ['listen', 'range', prefix, 'peer-group', peer_group]) # check validate() - peer-group does yet not exist! with self.assertRaises(ConfigSessionError): self.session.commit() self.session.set(base_path + ['peer-group', peer_group, 'remote-as', ASN]) # commit changes self.session.commit() # Verify FRR bgpd configuration frrconfig = getFRRBGPconfig() self.assertIn(f'router bgp {ASN}', frrconfig) self.assertIn(f' neighbor {peer_group} peer-group', frrconfig) self.assertIn(f' neighbor {peer_group} remote-as {ASN}', frrconfig) self.assertIn(f' bgp listen limit {limit}', frrconfig) for prefix in listen_ranges: self.assertIn(f' bgp listen range {prefix} peer-group {peer_group}', frrconfig) if __name__ == '__main__': unittest.main(verbosity=2)