Why Fragmentation is Done at IP why not for TCP/UDP.

Posted by mahesh on Stack Overflow See other posts from Stack Overflow or by mahesh
Published on 2009-06-24T08:50:33Z Indexed on 2010/05/01 21:37 UTC
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c++

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networking

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tcpip

I am looking for the reason Why Fragmentation is Done at IP level but why not for TCP/UDP.

Suppose say my frame looks like this |MAC|IP|TCP|Payload|FCS. the whole size if say for eg: 1600. PathMTU happens here, why fragmentation is implemented @ IP level is my question and why not implemented @ TCP/UDP level/code.

Thank in advance.

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