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Changing short description from "Unit of information transmitted between peer entities (at the same layer) of a computer network" to "Unit of information transmitted over a computer network" (Shortdesc helper) |
GKNishimoto (talk | contribs) Tags: Mobile edit Mobile web edit Advanced mobile edit |
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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.
When the PDU of one layer (''n''), sent as SDU to the layer one lower than it (''n-1''), plus any metadata ([[Header (computing)|headers]]/[[Trailer (computing)|trailers]]) that layer ''n-1'' adds to the SDU would exceed the largest size that layer ''n-1''<nowiki/>'s PDU can be, IP fragmentation is invoked to break it up into multiple payloads that fit in the layer-''n-1'' PDU's.
===Internet protocol suite===
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