Re: BGP prefix filter list

[Dan White <dwhite () olp net>]

We recently filtered out >=/24 prefixes since we're impacted by 768k day.
I'm attaching our lightly researched list of exceptions. I'm interested in
what others' operational experience is with filtering in this way.

Filtering /24s cut our table down to around 315K.

On 05/15/19 13:43 +0200, 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.
>
> Thanks,
>
> Baldur

--
Dan White
BTC Broadband
Network Admin Lead
Ph  918.366.0248 (direct)   main: (918)366-8000
Fax 918.366.6610            email: dwhite () mybtc com
http://www.btcbroadband.com

Attachment: punt-768k-day.txt
Description: