Difference between revisions of "Timeout"
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| − | In | + | In a [[packet switch]]ing [[communication network]], a '''timeout''' occurs when no [[acknowledgement]] for data or a [[packet]] sent by an entity to another is received from the other before a given time after it was originally sent - presumably because it was damaged or lost by the network. After the timeout happens, the data/packet will be [[retransmission|retransmitted]]. |
Since the delay is a real-time delay (since the entity at the other end is independent), such systems are a variety of [[real-time system]]. In a [[wide-area network]], calculating what the appropriate delay should be is a non-trivial problem, and it took well over a decade of work before the timers in the [[TCP/IP]] [[protocol suite]] worked well. | Since the delay is a real-time delay (since the entity at the other end is independent), such systems are a variety of [[real-time system]]. In a [[wide-area network]], calculating what the appropriate delay should be is a non-trivial problem, and it took well over a decade of work before the timers in the [[TCP/IP]] [[protocol suite]] worked well. | ||
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[[Category: Networking]] | [[Category: Networking]] | ||
Revision as of 13:41, 21 October 2018
In a packet switching communication network, a timeout occurs when no acknowledgement for data or a packet sent by an entity to another is received from the other before a given time after it was originally sent - presumably because it was damaged or lost by the network. After the timeout happens, the data/packet will be retransmitted.
Since the delay is a real-time delay (since the entity at the other end is independent), such systems are a variety of real-time system. In a wide-area network, calculating what the appropriate delay should be is a non-trivial problem, and it took well over a decade of work before the timers in the TCP/IP protocol suite worked well.
