DECnet and TCP/IP between Ultrices

[Martyn Johnson]

In article <9085 at batcomputer.tn.cornell.edu> hurf at tcgould.tn.cornell.edu
(Hurf Sheldon) writes:

> -more like 'aa:0:4:0:4:dc' instead of '8:0:2b:7:64:de'. The 'aa' is a
> tipoff as all DEC systems start with 8:0:2b

Not absolutely true.  I have a batch of early DEQNAs with hardware
addresses beginning aa:0:03.  This is easily confused with the
DECnet prefix of aa:0:04.

It means that you have to look at all three bytes to be sure.

Martyn Johnson
University of Cambridge Computer Lab
Cambridge UK.