Ethereal-users: Re: [Ethereal-users] CRC bytes

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Sun, 11 Sep 2005 17:38:18 -0700
Ulf Lamping wrote:
There are CRC's in the Ethernet protocol (which isn't displayed, as it is not handled over by the network card driver),
...except when it is, e.g. in the current Ethernet adapter in PowerMacs and the Panther and Tiger (and perhaps earlier) OS X drivers for that adapter. This might happen on other OSes, too. 


IP has a CRC checksum which is displayed,
TCP has a CRC checksum which is displayed, ...
The Internet protocol suite defines a checksum, used in a number of protocols (IP, TCP, UDP, etc.), but it's not a Cyclic Redundancy Check: 

	http://en.wikipedia.org/wiki/Cyclic_redundancy_check