[c-nsp] 7600 RSP720 SRD4 bgp bounce triggers cpu exhaustion

[Mack McBride]

We have SRD1 as the code version the case is open under.
However it appears to effect a wider range of code.
Possibly up to current latest 15.1 releases.

Mack

-----Original Message-----
From: Steven Raymond [mailto:sraymond at bluehost.com] 
Sent: Monday, November 07, 2011 8:26 AM
To: Mack McBride
Cc: Cisco Network Service Providers
Subject: Re: [c-nsp] 7600 RSP720 SRD4 bgp bounce triggers cpu exhaustion

On Nov 2, 2011, at 1:56 PM, Mack McBride wrote:

> I am having the same problem and have a case open with Cisco.
> We use the 7600s as route reflectors to a number of neighbors (20+).
> BGP is a high priority process and the number of packets exchanged is huge (100K?).
> Of course they all have to get assembled in the input queue before they get processed.
> We are seeing the same types of issues and have done some packet captures and event logs.
> We have also seen this on the GSR platform running 12.0(33) code.
> We aren't seeing the Input process spike but we are seeing the BGP process eat the CPUs lunch.

AM definitely expecting BGP to consume a lot of cpu and make the CLI sluggish.  I do not however expect the IGP to drop, HSRP to flop, and the rest of the network become basically tipped over.  What IOS version do you have the case open on for the 7600s?

Thanks!