Hello. We are using bird with several upstream providers, all of them with a share of traffic. We are in the process of shutting down one of them but we are unsure how to proceed to minimize loss of traffic. We have been reading and looking for general recommendations but it is not clear (besides using graceful shutdown which is not supported by the upstream we want to shutdown). We have been looking at mailing list but we haven't found anything treating this matter. So far, solutions we have come up are: 1) Use AS-path prepend to increase metric on the uptstream to be shutted down and once nearly no traffic comes in through that link, shutdown BGP and unplug. Something like: export filter { if source = RTS_STATIC then { # Export only static routes # Assign our community bgp_community.add((65000,64501)); # Artificially increase path length # by advertising local AS number twice if bgp_path ~ [= 65000 =] then bgp_path.prepend(65000); bgp_path.prepend(65000); accept; } reject; }; 2) Another solution is to just shutdown BGP session but leave upstream connected and configured (so outdated routers we still reach us...). 3) And the obvious, just shutdown BGP session and unplug the cable. It would be great to know your opinion and what's the recommended way to proceed. What do you think? Many thanks Best Regards. -- Francis Brosnan Blázquez <francis.brosnan@aspl.es> ASPL -- Advanced Software Production Line, S.L.