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