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PDU is short for "Protocol Data Unit". This basically means an amount of information delivered through a network layer.

Colloquial term is "packet" :-) But that is not the same as PDUs from higher network layers may contain more data than a PDU from a lower layer may carry. In this case, the higher layer PDU is split into several PDUs from the lower layer. Furthermore, a PDU from a lower layer might contain multiple PDUs from higher network layers.

See also

PDU (last edited 2008-04-12 17:50:17 by localhost)