Caravan Analogy l Cars propagate at 100 km/hr l Toll booth takes 12 sec to service a car transmission time) l car bit caravan packet Q How long until caravan is lined up before 2nd tollbooth lTime to push ” entire caravan through tollbooth onto highway = 12*10 = 120 sec l Time for last car to propagate from st to 2nd toll both 100km/(100km/hr)= 1 hr A 62 minutes Transmission vs Propogation Delay - Java Applet This simple applet illustrates one of the most fundamental concepts in computer networking transmission delay versus propagation delay. Although this concept is discussed in detail in Lesson 1, an "interactive animation speaks a thousand words. You set the length of the link, the packet size, and the transmission speed the applet shows the packet being sent from sender to receiver. Transmission versus Propagation Delay - Click hereto view applet GOTO TOP Queuing Delay l R = Link bandwidth (bps) l L = packet lenght (bits) la = average packet arrival rate
