True, but in most situations, more information allows for better control. You could use the table (combined with flows) to see that you have a problem with upstream A and carrier B. You could then use a BGP community to tell upstream A not to announce your routes to carrier B. You could then filter routes from carrier B via Upstream A. Upstream A may then send your traffic to carrier C or you may determine that a better path is via upstream D. Can't do that without full tables.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com ----- Original Message ----- From: "Ken Hohhof" <[email protected]> To: [email protected] Sent: Friday, January 22, 2016 8:49:09 AM Subject: Re: [AFMUG] Single homed to multi, full partial or default route ? If you just use the shortest AS path, not sure that is really taking control. I’m thinking of a scenario where you have one cheap upstream and one high quality upstream that monitors for interconnection problems like packet loss and latency and tweaks their routing table. I don’t think BGP will automate those decisions for you. But if the cheap upstream has direct peering or colocated servers from a bunch of CDNs, might as well send that outbound traffic to them. From: Paul Stewart Sent: Friday, January 22, 2016 5:34 AM To: [email protected] Subject: Re: [AFMUG] Single homed to multi, full partial or default route ? Would suggest full routes everytime if possible .. depends on how much control you want over your paths though .. From: Af [mailto:[email protected]] On Behalf Of Cassidy B. Larson Sent: Thursday, January 21, 2016 9:24 PM To: [email protected] Subject: Re: [AFMUG] Single homed to multi, full partial or default route ? I’d just request local + customer routes + peer routes and a default from your upstreams. If it’s more than 3 AS hops away it’s probably a toss up which way is better to go out. On Jan 21, 2016, at 7:14 PM, TJ Trout < [email protected] > wrote: I'm a complete idiot and I just turned up 2 upstreams, butch Evans will be setting up the bgp, he said I can take full routes, partial router /20 and larger or default routes, anyone able to tell me the best choice and the pros and cons of each ? Thanks a million
