Re: BGP prefix filter list

[Jon Lewis <jlewis () lewis org>]

On Wed, 15 May 2019, Baldur Norddahl wrote:

> Hello
>
> This morning we apparently had a problem with our routers not handling the 
> full table. So I am looking into culling the least useful prefixes from our 
> tables. I can hardly be the first one to take on that kind of project, and I 
> am wondering if there is a ready made prefix list or similar?
>
> Or maybe we have a list of worst offenders? I am looking for ASN that 
> announces a lot of unnecessary /24 prefixes and which happens to be far away 
> from us? I would filter those to something like /20 and then just have a 
> default route to catch all.

This may be too old to be terribly useful other than as a starting point, 
but we went through essentially the same thing a little more than 10 years 
ago:

http://jonsblog.lewis.org/2008/01/19#bgp

----------------------------------------------------------------------
 Jon Lewis, MCP :)           |  I route
                             |  therefore you are
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