Interfaces communicating application application transport transport datagram hetwork cpu memory network link link linkhdatagram link datagram link physical physical physica sending side: receiving side: encapsulates datagram in frame looks for errors,reliable data adds error checking bits,reliable data transfer,flow control,etc. transfer,flow control,etc. extracts datagram,passes to upper layer at receiving side LinkLayer:6-9controller physical memory CPU Interfaces communicating controller physical cpu memory application transport network link link physical application transport network link link physical sending side: ▪ encapsulates datagram in frame ▪ adds error checking bits, reliable data transfer, flow control, etc. receiving side: ▪ looks for errors, reliable data transfer, flow control, etc. ▪ extracts datagram, passes to upper layer at receiving side linkh link datagram datagram datagram Link Layer: 6-9