Duplication of ip address and MAC

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May 7th, 2008
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We are experianceing a duplication of ip address problem the duplication occurs with gateway address cause all the WAN fail we check on the NMS and find duplication of ip address

1d19h: %IP-4-DUPADDR: Duplicate address on Vlan1, sourced by 0009.6bca.7499 we have gone through IBM document highlighted this problem and resolution by changing the virtual MAC-address of HSRP link for your reference


What steps shall we take to permenantely remove this problem please advise

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Collin Clark Thu, 05/08/2008 - 08:41
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Are you 'teaming' NICs on the server?

Collin Clark Fri, 05/09/2008 - 05:05
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I bet your in load balance mode and not failover mode. Since the NIC's are load balancing and using a virtual MAC, it's hopping back and forth. It's "normal" for the NICs to do this and that why we always run ours in failover.

Hope that helps.


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