Duplicate MAC Addresses

[#1]

Anyone have a good solution for managing two computers with the same MAC
Address?
--
Brad Rellinger
Technology Specialist
Anthony Wayne Local Schools K-12
aw_aca_bre at nwoca.org

[Bukira]

Yes, you should never have two computers with the sane MAC address, so 1, why do you have 2 computers with the same MAC address,

[talkingmoose]

Date: Wed, 10 Jun 2009 10:37:02 -0400

That's highly unusual but certainly not impossible. We actually received
multiple printers in an order with the same MAC address.

I wouldn't even try to manage these machines as they are since so much
(Casper identification and network routing) relies on a valid MAC address.
Have you contacted Apple about "repairing" one of them?

--

bill

William M. Smith, Technical Analyst
MCS IT
Merrill Communications, LLC
(651) 632-1492

[#4]

The problem with contacting Apple is that they are both iBook's with
replacement Logic Boards from Apple, that "happen" to have the same MAC
address....
--
Brad Rellinger
Technology Specialist
Anthony Wayne Local Schools K-12
aw_aca_bre at nwoca.org

[#5]

As a repair technician I've never seen this before! How interesting. Are the ibook's in warranty to get another MLB repair?

---

Kathie Iorizzo
Lower School Technician
The Latin School of Chicago
kiorizzo at latinschool.org
312.582.6136

[winkelhe]

Never seen this either. Are you sure it's the same serial number?? If the repair tech doesnt run the reserializer the logic boards will have the same serial. The MAC address though is branded to every network interface so in an ibook theres at least 2, one for ethernet and 1 for airport. I wonder if theres a way to tell casper to recognize the machine by the airport address and not the built in ethernet.

eric winkelhake
mundocomww
office 312 220 1669
cell 312 504 5155

[Bukira]

There no fix no matter what Casper can do as duplicat mac address can cause havoc with switchs
Only answer is for a replacement or repair as mac addresses must be unique

[#8]

Apple should be able to repair this. This will cause problems with network
packet routing and should be fixed.

Xerox once sent us printers that had the same MAC address. If you would
print to one you had a 50 50 shot as to where the job would be printed.
Xerox sent us a utility and I was able to flash the network card and change
the MAC.

[#9]

Unique serials numbers, same MAC addresses. Attach is screenshots for the
curious.
I sent in a GSX help ticket -- we'll see if they will do anything about it.

The most interesting part is that they were both repaired around the same
time:

iBook G3 - UV325187PET
Bought 06/07/03
Mail-In 04/07/08 (logic board replacement)

iBook G3 -UV32517QPET
Bought 06/27/03
Mail-In 04/21/08 (logic board replacement)
--
Brad Rellinger
Technology Specialist
Anthony Wayne Local Schools K-12
aw_aca_bre at nwoca.org

[#10]

In case anyone is curious -- Apple replaced one of the Logic Boards free of
charge.
--
Brad Rellinger
Technology Specialist
Anthony Wayne Local Schools K-12
aw_aca_bre at nwoca.org