RE: Where to Put Ethernet MAC Addresses?

-----Message d'origine-----
De : owner-linuxppc-embedded@lists.linuxppc.org
[mailto:owner-linuxppc-embedded@lists.linuxppc.org]De la part
de Howard,
Marc
Envoyé : mercredi 1 octobre 2003 22:44
À : 'Dan Malek'; Kent Borg
Cc : linuxppc-embedded@lists.linuxppc.org
Objet : RE: Where to Put Ethernet MAC Addresses?



I personally favor the "roll your own MAC address from the
serial number" approach but it does have the drawback that
you must have unique serial #'s on the boards.  If the serial
numbers are entered (or not entered) by lazy humans you could
potentially have two devices with the same MAC address on a
network.  I also select as the first 3 bytes of the MAC
address the address assigned to a defunct company and the lower
3 bytes derived from the serial number.

There is a range of MAC adresses for local use (inside an appliance
or even inside a vehicle would be the case). That's what I use for
in-lab development on custom MPC855T boards.

See for instance <http://www.centsoft.com/mac.htm>.

If you don't mass-produce, using the current time for a seed might
work. :)

HTH
--
Albert.

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