Ive been having issues with high cpu usage on 2620 routers. my highest user of cpu is the IP input process according to: sh proc cpu | exclude 0.00%__0.00%__0.00%. However, at the time when the cpu spikes over 80% the packets per second drop down to the lowest they ever are. this router is doing nat/dhcp. 2 vlan subints off the faste, and some basic Voip QoS. I can post the running if need be... but before i do, any ideas?