Wikipedia

Protocol data unit

This is an old revision of this page, as edited by 129.42.208.182 (talk) at 13:50, 16 August 2005 (For example: Bridge PDU or iSCSI PDU). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

In telecommunications, the term protocol data unit (PDU) has the following meanings:

  1. Information that is delivered as a unit among peer entities of a network and that may contain control information, address information, or data.
  2. In layered systems, a unit of data that is specified in a protocol of a given layer and that consists of protocol-control information of the given layer and possibly user data of that layer. For example: Bridge PDU or iSCSI PDU

Source: from Federal Standard 1037C

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