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03/05/2004 at 07:49AM PST, ID: 20908402
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7.0

Wrong MAC Address Appearing in Windows ARP Cache

Asked by jbailey01 in Windows 2003 Server

Tags: arp, cluster

I am running a 2 node Windows 2000 cluster with 3 instances of SQL 2000. One of the instances, SQLSERVER01, is used exclusively by a front end Windows Server 2003 WebServer. Problem I am having is, when the SQLSERVER01 instance resides on a specific node of the cluster, the web server can communicate with it just fine. When the instance is moved to the other node in the cluster, the web server receives the updated MAC from the clusters ARP broadcast, but after two minutes or so it reverts back to the MAC of the original cluster node, and service is disrupted. I can do an 'arp -d' to clear the web servers ARP cache and everything is alright for another two minutes, when all of a sudden the wrong MAC shows up again in the web servers ARP table. I have checked other client machines on the VLAN and they all have the correct MAC address, seems to be only effecting the web server that is constantly communicating with the cluster. I have checked the switch, a Cisco 3548XL, and its ARP cache shows the correct MAC address.

Any ideas? If any clarification is needed just let me know.

Thanks,
JBailey
 
Keywords: Wrong MAC Address Appearing in Win…
 
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[+][-]03/05/04 08:00 AM, ID: 10523834

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About this solution

Zone: Windows 2003 Server
Tags: arp, cluster
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Solution Provided By: Cypher188
Participating Experts: 2
Solution Grade: A
 
 
[+][-]03/10/04 09:16 AM, ID: 10562648

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[+][-]03/10/04 11:41 AM, ID: 10564186

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[+][-]03/10/04 11:44 AM, ID: 10564219

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