NLB ov trunk link

Unanswered Question
Mar 6th, 2009


We have NLB runnning on our Exchange email servers on 2 load balanced Cisco 3750's.

We are getting issues on our LAN were some users name ping the NLB virtual IP and some can't. I don't understand how NLB works to well, but I have read you need to add static arp entries to the switches, anyone tried this or experienced a similar situation?

Both servers have 2 nics, one is for the LAN which works fine the other is for the NLB and doesnt have a gateway (uses the LAN Nic), the NLB software then has a virtual IP created.

I have this problem too.
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Anonymous (not verified) Thu, 03/12/2009 - 07:26

Use this below commands to verify your MAC address.

show mac-address-table

show ip arp


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