[c-nsp] 7200s and CEF (Was: No 12.4T for 7500s)

[Saku Ytti]

On (2005-10-04 10:06 -0500), Pete Templin wrote:
 
> (Circling back to this topic)  Doesn't the NPE handle the switching 
> decision on every packet (NSE w/ PXF excluded)?  CEF may be optimized 
> for high switching rates amidst large routing tables, but isn't the 
> lookup still done on the general-purpose CPU, and therefore still 
> susceptible to sharing the CPU with other tasks?

 Yes, anything in interrupt level will affect your transit traffic,
eg. 'dir' or 'write' will result increased latency to traffic
passing the router.

-- 
  ++ytti