North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: BGP Path Filtering
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 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. I said *EVERY* network prefix from *EVERY* source. I didn't limit it to just customers. ANS also filtered peers.
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