Congestion and Transmission Rate TO CONTROL PACKET LOSS, ONE MUST CONTROL THE RATE AT WHICH PACKETS ARE SENT. OUR ON-CAMPUS NETWORK CAN TRANSMIT 10 MILLION BITS PER SECOND. THE LINK FROM WILLIAMS TO THE REST OF THE WORLD CAN ONLY SENT 1 MILLION BITS PER SECOND. IF ONE MACHINE SENDS DATA AS FAST AS THE CAMPUS NETWORK ALLOWS, THE ROUTER WILL BE OVERWHELMED. BOTTLENECKS = THE TRANSMISSION RATE OF PACKETS MUST MATCH THE SLOWEST LINK IN THE PATH THEY WILL FOLLOW.

The Web: Technologies and Techniques Links to other course pages: CS 105 Home Page CS 105 Lecture Schedule CS 105 On-line Discussion Group: All discussions Discussion relating to this lecture topic Williams College Department of Computer Science

This page is part of a section of lecture slides related to " Network Congestion " within the topic "Data Delivery Obstacles". Other slides within this section and other sections of slides for the topic "Data Delivery Obstacles" can be accessed using the links below. Retransmission Techniques Acknowledgements and Retransmission Retransmissions and Timeouts Sequence Numbers Sequence Numbers (cont.) Message Reordering Reliability and Connections A Reliable Delivery Problem Cautious Generals Solving the General's Problem Solving the General's Problem (cont.) Connections Establishing Connections Persistent HTTP Connections Network Congestion Packet Loss and Congestion Congestion and Transmission Rate Congestion and TCP Connections Finding the Bottleneck Rate TCP Transmission Rate Adjustment Error Detecting Codes Damagaged Data Symbols and Meaning Interpreting Binary Symbols Evaluating Codes Error Detecting Codes Parity Codes for Error Detection Multiple Bit Errors Interleaved Transmission Error Correcting Codes Any Guesses? Digital Recording on Compact Discs Two-dimensional Parity Bits Spatial Interleaving