[c-nsp] 7200 vs. 7600

[Dale W. Carder]

On Oct 5, 2004, at 5:00 PM, F. David Sinn wrote:
> Netflow can be an issue if you have too many flows, in that you can 
> blow out the Netflow TCAM cache.  I haven't tested the real to 
> advertised flow cache ability of a 3BXL, but have seen issues with the 
> PFC2 which has half as many entries.

What is the operational impact of overflowing the netflow table?  I 
thought that netflow (on the sup2 and 720, which both use CEF) was only 
used for netflow export, and IIRC, nat.

However, purging/expiring too many netflow entries does raise the cpu 
load of the switch processor (this was the L3Aging process on CatOS, 
don't recall what it is on IOS).

Dale