[comp.dcom.lans] Duplicate Internet address on same network

lodin@plains.UUCP (Joe Schmo) (06/08/90)

I have two machines on my network using the same Internet address, and without
network analysis tools, I am having trouble identifying the culprit.  Could
somebody please tell me which manufacturer uses the Ethernet address
AA:0:4:X:X:X.


Thanks alot...

Reply to:
Steve Lodin
lodin%koiasvr01.uucp@ee.ecn.purdue.edu or lodin@koess.gm.hac.com

robinson@durham.med.unc.edu (Gerard A. Robinson) (06/10/90)

In article <4988@plains.UUCP> lodin@plains.UUCP (Steve Lodin) writes:
>
>I have two machines on my network using the same Internet address, and without
>network analysis tools, I am having trouble identifying the culprit.  Could
>somebody please tell me which manufacturer uses the Ethernet address
>AA:0:4:X:X:X.

That's the format of a DEC ethernet address after DECnet is done with it.
The X:X:X is typically a 0 followed by the 16-bit combination of the area
and node number 6bits of area and 10bits of node, little-endian.  DECnet
overrides the default ethernet address on the board with this result.  An
example for host 42.8 is AA:0:4:0:8:A8.

Gerard Robinson