Difference between revisions of "Retransmission"
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| − | In | + | In a [[packet switch]]ing [[communication network]], '''retransmission''' is the process of re-sending data or [[packet]]s which were damaged or lost by the basic network, and for which therefore no [[acknowledgement]] was received before a [[timeout]] after it was originally sent. |
If a given data item/packet is retransmitted a number of times, and no acknowledgement for it is ever received, that generally means that either the [[host]] on the other end has [[crash]]ed, or there is a fault in the network which means packets cannot be exchanged between the two ends, and the [[connection]] is usually aborted. | If a given data item/packet is retransmitted a number of times, and no acknowledgement for it is ever received, that generally means that either the [[host]] on the other end has [[crash]]ed, or there is a fault in the network which means packets cannot be exchanged between the two ends, and the [[connection]] is usually aborted. | ||
Revision as of 13:35, 21 October 2018
In a packet switching communication network, retransmission is the process of re-sending data or packets which were damaged or lost by the basic network, and for which therefore no acknowledgement was received before a timeout after it was originally sent.
If a given data item/packet is retransmitted a number of times, and no acknowledgement for it is ever received, that generally means that either the host on the other end has crashed, or there is a fault in the network which means packets cannot be exchanged between the two ends, and the connection is usually aborted.
