RE: Determine difference between 2 BGP feeds

[Alex Rubenstein <alex () nac net>]

More than likely, one provider is feeding too many routes -- some that I 
have run across tend to feed more specific internal routes (read: 
redistributing IGP into BGP) to customer BGP sessions.

The two I've run across, after I yelled, they fixed.



On Tue, 18 Apr 2006, Mike Walter wrote:

> Sounds to me like one of your providers is not feeding you the full
> internet routing table.  Have you checked with them to see if they are
> providing you that?
>
> Mike Walter
> Systems Administrator
>
>
> -----Original Message-----
> From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
> Scott "Tuc" Ellentuch at T-B-O-H
> Sent: Tuesday, April 18, 2006 4:13 PM
> To: nanog () merit edu
> Subject: Determine difference between 2 BGP feeds
>
>
> Hi,
>
>         We receive a BGP feed from different providers on two
> different routers. While one seems to be a reasonable amount
> of feeds after reviewing the CIDR report, the other is anywhere
> from 3K to 10K more routes.
>
>         Is there a utility that I can use that will pull the
> routes off each router (Foundry preferred), and then compare
> them as best it can to see why there is such a difference?
> I can understand a handful of routes over what CIDR says,
> but a minimum of 3K more?
>
>                 Thanks, Tuc/TBOH

--
Alex Rubenstein, AR97, K2AHR, alex () nac net, latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net