BGP prefix filter list

Dan White dwhite at
Wed May 15 14:25:46 UTC 2019

On 05/15/19 13:58 +0000, Phil Lavin wrote:
>> We're an eyeball network. We accept default routes from our transit
>> providers so in theory there should be no impact on reachability.
>> I'm pretty concerned about things that I don't know due to inefficient
>> routing, e.g. customers hitting a public anycast DNS server in the wrong
>> location resulting in Geolocation issues.
>Ah! Understood. The default route(s) was the bit I missed. Makes a lot of
>sense if you can't justify buying new routers.
>Have you seen issues with Anycast routing thus far? One would assume that
>routing would still be fairly efficient unless you're picking up transit
>from non-local providers over extended L2 links.

We've had no issues so far but this was a recent change. There was no
noticeable change to outbound traffic levels. 

Dan White
BTC Broadband
Network Admin Lead
Ph  918.366.0248 (direct)   main: (918)366-8000
Fax 918.366.6610            email: dwhite at

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