Since 6500 is hardware based device it is hard to say that is the "recommended" cpu load. It depends variably on you traffic load and functions that device performs. CPU usage on such hardware platform is mostly control plane functions effect. In other case it is loaded with traffic, destined to device itself, so it will be point to investigate.
Here is listed another causes of the high cpu usage:
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...