[e2e] UDP checksum field?

Cannara cannara at attglobal.net
Sun Apr 3 20:06:09 PDT 2005

Faisal, yes indeed, the checksum lets the receiver discard garbage, just as
the CRC at the frame level does.  UDP can be asked to not use the checksum,
for devil-may-care applications. :]


Faisal Aslam wrote:
> Hi,
> Why we have checksum field is in UDP header, as UDP does not provide data retransmission etc?
> I think it is used only to silently discarding a packet with wrong checksum (thats it?). Is there any other application of checksum field?
> Sorry if the question is too naive.
> Thanks
> Faisal

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