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 to
MFN / 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 ISPs
We 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. -- Leo Bicknell - bicknell@ufp.org - CCIE 3440 PGP keys at http://www.ufp.org/~bicknell/ Read TMBG List - tmbg-list-request@tmbg.org, www.tmbg.org