High CPU with "autocommand telnet..."

[jwood]

I used the "autocommand telnet..." function to allow two async devices to communicate via a pair of 3640 routers. The routers have 32-port async modules installed for this solution. I have found that once a single connection establishes between the routers, the source router CPU jumps by about 17% while the destination router CPU jumps about 22%. Does anyone know if this is normal or if there is a way to reduce the jump in CPU?

[#2]

The best option to fix the issue is to enable CEF.Using CEF will allow the router to process traffic in the most efficient way possible.