In Figure 11.11, show what happens in each of the following cases:

Figure 11.11

a. The receiver is in the ready state and a packet comes from the network layer.
b. The receiver is in the ready state and a corrupted frame arrives.
c. The receiver is in the ready state and an acknowledgment arrives.

Transcribed Image Text:

Sending node Packet came from network layer. Make a frame, save a copy, and send the frame. Start the timer. Time-out. Resend the saved frame. Restart the timer. Blocking Ready Corrupted ACK arrived. Start Error-free ACK arrived. Stop the timer. Discard the ACK. Discard the saved frame. Receiving node Corrupted frame arrived. Error-free frame arrived. Extract and deliver the packet to network layer. Send ACK. Discard the frame. Ready Start