BGP questions

Sat Nov 15 22:35:56 UTC 2003

If it's anything like what some of my downstreams have encountered, you'll want to explore the options to set communities on your outbound announcements to 6939 and/or 3356.  Most likely, as 3356 announces your routes to its peers, those peers are assigning a peer-level local preference.  Meanwhile, as 6939 announces your routes to their upstreams, those networks are using a default or "paid customer" local preference.  Since local preference comes before AS path length, you have to remotely twiddle local preference to get results.

HTH,

Pete Templin
Senior Staff Engineer
TexLink Communications
(210) 892-4183
pete.templin at texlink.com

-----Original Message-----
From: Charles Sprickman [mailto:spork at inch.com]
Sent: Saturday, November 15, 2003 3:02 PM
To: nanog at merit.edu
Subject: OT: BGP questions

Hi,

Where's the best place these days to ask some "simple" BGP questions?  I
don't want to bother *-nsp at puck, but inet-access scares me.  Any
suggestions?  I'm good with the basics, but I've got a perplexing issue
(just look at AS8059, which is still sucking down most traffic via 6939
rather than 3356, even with all that silly prepending)...

Thanks,

Charles

--
Charles Sprickman
spork at inch.com