[c-nsp] Catalyst TCAM Question

[Euan Galloway]

On Thu, May 05, 2011 at 07:20:43AM -0700, Bill Blackford wrote:
> Platform: 7600/SUP720-B
> 
> If a box that can only handle sub 200k IPV4 routes in TCAM receives
> two full feeds and as shown below is only 'using' 196305 of them, is
> the delta of that 350k dropped or is it then processed in software?
> Looking a 'sh route sum' it looks like a full table in the FIB. 'sh fm
> sum' shows nothing INACTIVE.

You'll want "show mls cef" to see the FIB on this platform, and you'll 
find it lacking a lot of prefixes.

http://www.gossamer-threads.com/lists/cisco/nsp/78380

Looking at the difference between "show ip cef" and "show mls cef" should 
show you what is being punted. 

You can tweak the 196k limit upto about 245k, but you are still going 
to have to filter at least 1/3 of the table out, so not sure you should 
bother.

-- 
Euan Galloway