nanog mailing list archives
Re: BGP multihoming with two address spaces
From: William Herrin <bill () herrin us>
Date: Wed, 29 Jan 2014 13:44:53 -0500
On Wed, Jan 29, 2014 at 6:32 AM, Joseph Jenkins <joe () breathe-underwater com> wrote:
I am seeking some feedback/help with my BGP configuration. I am peering with two providers level3 and tw. Unfortunately all of my address spaces are preferring the route over tw rather than level3.
Hi Joe, I had a situation like this a couple months ago but my two providers were: Centurylink and Centurylink. No matter how many prepends I added, the traffic preferred the slow link in one state to the fast link in another. It turned out that Centurylink (Embarq) gets to the Internet via Centurylink (Qwest). Unless modified by communities, Qwest has a local pref that delivers traffic to direct customers in preference to other ASes. And the folks in Embarq's support had no idea what Qwest was doing. This sort of local-pref default seems to be a common practice with backbones. It's very annoying. I wish they'd stop. Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- BGP multihoming with two address spaces Joseph Jenkins (Jan 29)
- Re: BGP multihoming with two address spaces Sasa Ristic (Jan 29)
- Re: BGP multihoming with two address spaces Joseph Jenkins (Jan 29)
- RE: BGP multihoming with two address spaces Adam Greene (Jan 29)
- Re: BGP multihoming with two address spaces Faisal Imtiaz (Jan 29)
- Re: BGP multihoming with two address spaces Joseph Jenkins (Jan 29)
- Re: BGP multihoming with two address spaces Sasa Ristic (Jan 29)
- Re: BGP multihoming with two address spaces Curtis Doty (Jan 29)
- Re: BGP multihoming with two address spaces William Herrin (Jan 29)
- Re: BGP multihoming with two address spaces Owen DeLong (Jan 29)
- Re: BGP multihoming with two address spaces Michael Hallgren (Jan 29)
- Re: BGP multihoming with two address spaces Owen DeLong (Jan 29)
- <Possible follow-ups>
- Re: BGP multihoming with two address spaces Jakob Heitz (Jan 29)