nanog mailing list archives
Re: BGP Path Filtering
From: Sean Donelan <sean () donelan com>
Date: Fri, 16 May 2003 20:10:22 -0400 (EDT)
On Fri, 16 May 2003, Leo Bicknell wrote:
In a message written on Fri, May 16, 2003 at 08:00:00PM -0400, Sean Donelan wrote:Large ISPS (more than 500 eBGP neighbors and 5000 prefixes) are going toMFN / AboveNet qualifies as a "large ISP" by your definition, yet:sufficient). ANS was the only major commercial provider I knew which explicitly configured BGP announcement filters for every network prefix from every source. According to studies, about 70% of large ISPsWe prefix-list filter all of our customers. We have from time to time made an exception due to route limits, or people limits, but we still exceed 99% of our customers are fully prefix-list filtered on all inbound announcements. It's not that hard.
I said *EVERY* network prefix from *EVERY* source. I didn't limit it to just customers. ANS also filtered peers.
Current thread:
- Re: Communities BCP [was: RE: BGP Path Filtering], (continued)
- Re: Communities BCP [was: RE: BGP Path Filtering] Guy Tal (May 16)
- Re: Communities BCP [was: RE: BGP Path Filtering] Leo Bicknell (May 16)
- Re: Communities BCP [was: RE: BGP Path Filtering] Danny McPherson (May 16)
- Re: Communities BCP [was: RE: BGP Path Filtering] Danny McPherson (May 16)
- Re: Communities BCP [was: RE: BGP Path Filtering] Stephen J. Wilcox (May 16)
- Re: Communities BCP [was: RE: BGP Path Filtering] Guy Tal (May 16)
- Re: BGP Path Filtering Leo Bicknell (May 16)
- Re: BGP Path Filtering Sean Donelan (May 16)
- Re: BGP Path Filtering Leo Bicknell (May 16)
- Re: BGP Path Filtering Sean Donelan (May 16)
- Re: BGP Path Filtering Joe Abley (May 17)
- Re: BGP Path Filtering Iljitsch van Beijnum (May 17)
- Re: BGP Path Filtering Sean Donelan (May 17)
- Re: BGP Path Filtering Mark Radabaugh (May 16)