HSRP Arp issue with Microsoft NLB

Unanswered Question
Mar 11th, 2010

I have two 4506 switches running HSRP for a server vlan. On the server vlan my server guy has deployed two servers running microsoft NLB in vmware. I had to put a static arp entry in my 2 cores but HSRP doesn't seem to be acting rght. After the static arp entry we were able to ping the microsoft NLB'd virtual server. We simulated a failure on the server vlan and the secondary HSRP 4506 didn't take over as the active gateway. Any ideas?

I have this problem too.
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John Blakley Fri, 03/19/2010 - 11:16

What is the configuration of your interfaces that are using HSRP? Can you post that?



cowetacoit Mon, 03/22/2010 - 05:37

this issue has been resolved. i created a test server SVI w/HSRP and trunked it to the bladecenter. Server guy created a test MS NLB cluster and i shut down the active SVI and the other SVI on the 4500 took over. i didn't have a solid way of testing without affecting production traffic. the static arp entries were the key to making this work.

cweindel Tue, 10/05/2010 - 14:02

Where did you put your static arp entries?  where they for the HSRP interfaces, or the NLB?



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