[nsp] High CPU & NAT

[rpcbind at speakeasy.net]

> FastEthernet2/0 is up, line protocol is up
>   IP route-cache flags are Fast
>   Policy routing is enabled, using route map InternalNAT
> FastEthernet3/0 is up, line protocol is up
>   IP route-cache flags are Fast

Enable cef globally 'router(config)#ip cef'. This should improve things 
significantly. I'd also take a look at that policy route and if its necessary, 
consider adding route-cache flow to fas2/0 and ip flow feature-accel.

>From the sounds of it, almost all none of your traffic should have to be 
process-switched, so watch for 'IP Input' to drop to near-0 values..