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Unformatted text preview: Why do we need timers? To detect when a packet or ACK has been dropped Suppose the receiver sends NAKs when there is a checksum error, instead of doing nothing What is the advantage/improvement? Sender can immediately detect that a packet was received with a bit error and needs to be retransmitted (explicit notification) What is the disadvantage? Added complexity at the sender and receiver implementation (additional switch cases)...
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This note was uploaded on 05/09/2011 for the course ECSE 414 taught by Professor Rabbat during the Fall '10 term at McGill.
- Fall '10