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Reverted good faith edits by 212.12.37.98 (talk): IPX is network layer _and_ transport layer, SPX is transport layer only |
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Given a context pertaining to a specific OSI layer, ''PDU'' is sometimes used as a synonym for its representation at that layer.
===Internetwork packet exchange (IPX)===
* The [[Transport layer]] PDU is the [[Internetwork_Packet_Exchange|SPX packet]] for SPX on top of IPX.
* The [[Network layer]] PDU is the [[Internetwork_Packet_Exchange|IPX packet]] for IPX.
* The [[link layer]] PDU is the [[Frame (networking)|frame]].
===Internet protocol suite===
Protocol data units for the [[Internet protocol suite]] are:
*The [[transport layer]] PDU is the [[TCP segment]] for TCP, and the datagram for UDP
*The [[Internet layer]] PDU is the [[Network packet|packet]].
*The [[link layer]] PDU is the [[Frame (networking)|frame]].
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