| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2020, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| import logging |
| import unittest |
| from ipaddress import IPv6Network |
| |
| import config |
| import thread_cert |
| |
| # Test description: |
| # This test verifies that a single OMR and on-link prefix is chosen |
| # and advertised when there are multiple Border Routers in the same |
| # Thread and infrastructure network. |
| # |
| # Topology: |
| # ----------------(eth)------------------ |
| # | | | |
| # BR1 (Leader) ----- BR2 HOST |
| # | | |
| # ROUTER1 ROUTER2 |
| # |
| |
| BR1 = 1 |
| ROUTER1 = 2 |
| BR2 = 3 |
| ROUTER2 = 4 |
| HOST = 5 |
| |
| CHANNEL = 18 |
| |
| |
| class MultiBorderRouters(thread_cert.TestCase): |
| USE_MESSAGE_FACTORY = False |
| |
| TOPOLOGY = { |
| BR1: { |
| 'name': 'BR_1', |
| 'allowlist': [ROUTER1, BR2], |
| 'is_otbr': True, |
| 'version': '1.2', |
| 'channel': CHANNEL, |
| }, |
| ROUTER1: { |
| 'name': 'Router_1', |
| 'allowlist': [BR1], |
| 'version': '1.2', |
| 'channel': CHANNEL, |
| }, |
| BR2: { |
| 'name': 'BR_2', |
| 'allowlist': [BR1, ROUTER2], |
| 'is_otbr': True, |
| 'version': '1.2', |
| 'channel': CHANNEL, |
| }, |
| ROUTER2: { |
| 'name': 'Router_2', |
| 'allowlist': [BR2], |
| 'version': '1.2', |
| 'channel': CHANNEL, |
| }, |
| HOST: { |
| 'name': 'Host', |
| 'is_host': True |
| }, |
| } |
| |
| def test(self): |
| br1 = self.nodes[BR1] |
| router1 = self.nodes[ROUTER1] |
| br2 = self.nodes[BR2] |
| router2 = self.nodes[ROUTER2] |
| host = self.nodes[HOST] |
| |
| host.start(start_radvd=False) |
| self.simulator.go(5) |
| |
| br1.start() |
| self.simulator.go(5) |
| self.assertEqual('leader', br1.get_state()) |
| |
| router1.start() |
| self.simulator.go(5) |
| self.assertEqual('router', router1.get_state()) |
| |
| self.simulator.go(5) |
| |
| br2.start() |
| self.simulator.go(5) |
| self.assertEqual('router', br2.get_state()) |
| |
| router2.start() |
| self.simulator.go(5) |
| self.assertEqual('router', router2.get_state()) |
| |
| # |
| # Case 1. bi-directional connectivity when there are two BRs. |
| # |
| |
| self.simulator.go(10) |
| self.collect_ipaddrs() |
| |
| logging.info("BR1 addrs: %r", br1.get_addrs()) |
| logging.info("ROUTER1 addrs: %r", router1.get_addrs()) |
| logging.info("BR2 addrs: %r", br2.get_addrs()) |
| logging.info("ROUTER2 addrs: %r", router2.get_addrs()) |
| logging.info("HOST addrs: %r", host.get_addrs()) |
| |
| self.assertEqual(len(br1.get_prefixes()), 1) |
| self.assertEqual(len(router1.get_prefixes()), 1) |
| self.assertEqual(len(br2.get_prefixes()), 1) |
| self.assertEqual(len(router2.get_prefixes()), 1) |
| |
| br1_omr_prefix = br1.get_omr_prefix() |
| self.assertEqual(br1_omr_prefix, br1.get_prefixes()[0].split(' ')[0]) |
| |
| # Each BR should independently register an external route for the on-link prefix. |
| self.assertEqual(len(br1.get_routes()), 2) |
| self.assertEqual(len(router1.get_routes()), 2) |
| self.assertEqual(len(br2.get_routes()), 2) |
| self.assertEqual(len(router2.get_routes()), 2) |
| |
| br1_on_link_prefix = br1.get_on_link_prefix() |
| self.assertEqual(br1_on_link_prefix, br1.get_routes()[0].split(' ')[0]) |
| self.assertEqual(br1_on_link_prefix, br1.get_routes()[1].split(' ')[0]) |
| |
| self.assertEqual(len(br1.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(router1.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(br2.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(router2.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(host.get_matched_ula_addresses(br1_on_link_prefix)), 1) |
| |
| # Router1 and Router2 can ping each other inside the Thread network. |
| self.assertTrue(router1.ping(router2.get_ip6_address(config.ADDRESS_TYPE.OMR)[0])) |
| self.assertTrue(router2.ping(router1.get_ip6_address(config.ADDRESS_TYPE.OMR)[0])) |
| |
| # Both Router1 and Router2 can ping to/from the Host on infra link. |
| self.assertTrue(router1.ping(host.get_matched_ula_addresses(br1_on_link_prefix)[0])) |
| self.assertTrue(host.ping(router1.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True)) |
| self.assertTrue(router2.ping(host.get_matched_ula_addresses(br1_on_link_prefix)[0])) |
| self.assertTrue(host.ping(router2.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True)) |
| |
| # |
| # Case 2. Another BR continues providing Border Routing when current one is disabled. |
| # |
| |
| br1.disable_br() |
| |
| self.simulator.go(15) |
| self.collect_ipaddrs() |
| |
| logging.info("BR1 addrs: %r", br1.get_addrs()) |
| logging.info("ROUTER1 addrs: %r", router1.get_addrs()) |
| logging.info("BR2 addrs: %r", br2.get_addrs()) |
| logging.info("ROUTER2 addrs: %r", router2.get_addrs()) |
| logging.info("HOST addrs: %r", host.get_addrs()) |
| |
| self.assertGreaterEqual(len(host.get_addrs()), 3) |
| |
| self.assertEqual(len(br1.get_prefixes()), 1) |
| self.assertEqual(len(router1.get_prefixes()), 1) |
| self.assertEqual(len(br2.get_prefixes()), 1) |
| self.assertEqual(len(router2.get_prefixes()), 1) |
| |
| br2_omr_prefix = br2.get_omr_prefix() |
| self.assertEqual(br2_omr_prefix, br2.get_prefixes()[0].split(' ')[0]) |
| |
| # Only BR2 will keep the route for BR1's on-link prefix |
| # and add route for on-link prefix of its own. |
| self.assertEqual(len(br1.get_routes()), 2) |
| self.assertEqual(len(router1.get_routes()), 2) |
| self.assertEqual(len(br2.get_routes()), 2) |
| self.assertEqual(len(router2.get_routes()), 2) |
| |
| br2_external_routes = [route.split(' ')[0] for route in br2.get_routes()] |
| |
| br2_on_link_prefix = br2.get_on_link_prefix() |
| self.assertEqual(set(map(IPv6Network, br2_external_routes)), |
| set(map(IPv6Network, [br1_on_link_prefix, br2_on_link_prefix]))) |
| |
| self.assertEqual(len(br1.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(router1.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(br2.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| self.assertEqual(len(router2.get_ip6_address(config.ADDRESS_TYPE.OMR)), 1) |
| |
| self.assertEqual(len(host.get_matched_ula_addresses(br2_on_link_prefix)), 1) |
| |
| # Router1 and Router2 can ping each other inside the Thread network. |
| self.assertTrue(router1.ping(router2.get_ip6_address(config.ADDRESS_TYPE.OMR)[0])) |
| self.assertTrue(router2.ping(router1.get_ip6_address(config.ADDRESS_TYPE.OMR)[0])) |
| |
| # Both Router1 and Router2 can ping to/from the Host on infra link. |
| for router in [router1, router2]: |
| self.assertTrue(router.ping(host.get_matched_ula_addresses(br2_on_link_prefix)[0])) |
| self.assertTrue(host.ping(router.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True)) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |
