On Wed, Apr 1, 2015 at 1:01 PM, Frederik Kriewitz <frede...@kriewitz.eu> wrote: > In > practice the biggest problem with [Cisco 6500s] is their poor BGP scalability > due to the CPU/memory limitations.
Hi Frederik: Are you sure about that? I would expect you to hit the wall on the TCAM long before CPU/RAM limitations. Check your log for errors along the lines of "FIB_EXCEPTION: FIB TCAM exception, Some entries will be software switched." This might be masked as a CPU problem since routing for destinations which fall out of the TCAM is forced up to the main CPU. If this is your problem and you're talking about sup-720-3bxl's with a 1M TCAM, you can change how much of the TCAM is allocated to which functions for now. Longer term, you either upgrade to something with a bigger TCAM or you reduce the number of routes you carry by introducing superset routes such as a default route and then filtering out the more-specifics your customers are least likely to use. Regards, Bill Herrin -- William Herrin ................ her...@dirtside.com b...@herrin.us Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
