MAC address confusion

Saku Ytti saku+nanog at
Sat Feb 28 16:50:22 UTC 2009

Whic one of these, is locally assigned unicast MAC address, when talking about
output format CSCO uses?

4000.0000.0000 (Local IXPs choice)
0200.0000.0000 (My money is here)
02-07-01   (hex)		RACAL-DATACOM
A0-6A-00   (hex)		Verilink Corporation

In either case two of the lowest or highest bits of 1st octet seems to be
happily used to assign addresses. What am I missing here?


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