The TCP/IP Game - Current Issues in IT Education - page 124

Figure 7. Operation summary: receive

Layer Receive Simulation

Physical envelope & wire

NAL IF for me continue =

ELSE discard

Calculate error code notional

IF correct send to IP

ELSE request retrans

IP Read IP address =

IF for me keep =

ELSE store and forward

(GO TO SEND)

Pass to TCP =

TCP Calculate error code notional

Assemble segments =

IF correct Send ACK notional

Evaluate Destination Port# =

Pass to Appl =

Appl Read message =