I was setting up intervlan routing between my 3640 and my 2924. Everything on the 1924 is setup correctly. Port is set to trunk and i set encapsulation as well as portfast. But when i go into the 3640's fa subinterface and i do a ? the encapsulation command is not listed. The current ios on my 3640 is c3640-i-mz. I read something that ios has to include IP plus which is c3640-is-mz. can anyone confirm this?