BGP prefix filter list

Seth Mattinen sethm at
Mon May 20 23:09:02 UTC 2019

On 5/20/19 3:05 PM, William Herrin wrote:
> The technique you describe was one variant of FIB Compression. It got 
> some attention around 8 years ago on the IRTF Routing Research Group and 
> some more attention about 5 years ago when several researchers fleshed 
> out the possible algorithms and projected gains. As I recall they found 
> a 30% to 60% reduction in FIB use depending on which algorithm was 
> chosen, how many peers you had, etc.

A good start would be killing any /24 announcement where a covering 
aggregate exists.

More information about the NANOG mailing list