[90026] in North American Network Operators' Group
RE: Determine difference between 2 BGP feeds
daemon@ATHENA.MIT.EDU (Alex Rubenstein)
Tue Apr 18 20:38:22 2006
Date: Tue, 18 Apr 2006 20:37:56 -0400 (Eastern Daylight Time)
From: Alex Rubenstein <alex@nac.net>
To: Mike Walter <mwalter@3z.net>
Cc: "Scott \\Tuc\\ Ellentuch at T-B-O-H" <ml@t-b-o-h.net>,
nanog@merit.edu
In-Reply-To: <BB4C6E31FB19824ABFE69BDAD0F4EB50354738@zionexch01.ZION.local>
Errors-To: owner-nanog@merit.edu
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
