router id 192.0.2.2; define rs_as = 999; log "/var/log/bird.log" all; log syslog all; debug protocols { states, routes, filters, interfaces, events }; protocol device {}; table master sorted; filter from_client { bgp_ext_community.add((unknown 0x4300, 0, 1)); accept; } protocol bgp AS10 { description "AS10"; local as 999; neighbor 192.0.2.10 as 10; rs client; passive on; ttl security off; interpret communities off; secondary; import keep filtered on; import filter from_client; export all; } protocol bgp AS20 { description "AS20"; local as 999; neighbor 192.0.2.20 as 20; rs client; passive on; ttl security off; interpret communities off; secondary; import keep filtered on; import filter from_client; export all; }