[c-nsp] TCAM at Cat4500 Sup6E

[Dmitry Kiselev]

Hello!

On Wed, Mar 18, 2009 at 06:08:54PM +0200, Dmitry Kiselev wrote:


I complete several TCAM management tests by myself and clearly
see that current 12.2(50)SG1 software do all TCAM rearrangements
pretty well.

Nice work, Cisco! A lot of thanks!


> Could anybody clear me with TCAM on Cat4500 Sup6E?
> Or Cat4900M as it is Sup6E based.
> 
> There are 64 TCAM blocks. Each of them can be DYNAMICALY
> configured as 80 or 160-bit with 4096 and 2048 entries
> accordingly.  IPv4 and IPv6 FIBs are builded DYNAMICALY
> using one or more TCAM blocks. Additional TCAM blocks
> are configured to apropriate bit-size and used if new FIB
> entry is learned and all previously allocated TCAM already
> used.  There are no stuff like "mls cef maximum-routes" or
> "sdm template" to preconfigure TCAM allocations.
> 
> Am I right?
> 
> How about optimizing TCAM blocks usage while freeing FIB
> entries?   Any other TCAM related caveats?

-- 
Dmitry Kiselev