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You can have you network guy look into the ARP table of the switch. He should be able to tell you on which port the duplicate card is connected. With that info, you should be able to find the guilty party.

Denis Robitaille
Directeur Service technique TI
CASCADES INC.
412 Marie Victorin
Kingsey falls(QuÃbec) Canada J0A 1B0
T : 819 363-6130
F : 819 363-6155


"Harman, Roger" <Roger.Harman@xxxxxxxxxx> 9/9/2010 10:36 >>>
This morning, after installing PTF's, on the last IPL (not starting to a restricted state) I had an IP address conflict that gave me a whale of a scare. We've not changed anything but the system is reporting another MAC address using that same IP. Only the last two digits are different. D0 vs C0. On the Ethernet line description, I find that my system is the D0. Not a clue what the other is buit it is not one of our other two boxes.

I've removed the offending interface on the 520 but I can still see the info from a PC command line via arp -a 10.100.40.11 [the dupe ip address]. Interesting that it shows the address as being dynamic but our DHCP server has no lease issued. We've always used the 10.100.40.xx static for the IBM boxes.

Does the 520 (8203-E4A) have two distinct NIC's and/or MAC's? I know there is a different interface for the LAN console but I can't find any evidence of another MAC address.

Tracert does not show multiple hops that would help me find it or narrow the scope.

Any other suggestions?


Roger Harman
I.T. Manager
Knott's Berry Farm
8039 Beach Blvd.
Buena Park, CA 90620
v: 714-220-5359
f: 714-220-5471
Roger.Harman@xxxxxxxxxx<mailto:Roger.Harman@xxxxxxxxxx>



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