How many bytes should a CRC-32 protect?

From: Dr G Fairhurst (gorry@erg.abdn.ac.uk)
Date: Mon May 06 2002 - 11:07:26 EDT

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    I was asked by someone how big a frame size can a CRC-32 reasonably protect?

    One of my students came across:

    http://sd.wareonearth.com/~phil/jumbo.html

    which seems to suggest that the CRC-32 is good for 10-12KB or so of
    data, and that
    this could be one reason why we don't see many subnetworks supporting
    MTUs > 12KB.

    Is there more wisdom out there on the use of CRCs over large subnetwork PDUs?
    - perhaps the ATM or gigEthernet people have thought this one through?

    Gorry Fairhurst.

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