Question About Load Balancing A Windows Server Across Two Switches

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Good morning all,

We currently use NIC teaming software to allow our servers to connect to our two (2) server farm cores that run in active/passive mode.

We have had problems with the teaming software for years, and just recently lost of a core found several servers that the teaming software failed.

Does anyone work with their server teams that connect server NIC's to two (2) cores in a load reduancy mode? Is this possible? Our server team cannot seem to find anything.

Thanks in advance for your assistance,

Dave Holder

I have this problem too.
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Giuseppe Larosa Fri, 01/23/2009 - 09:36

Hello Dave,

to use the so called load redundancy mode you need to build an etherchannel in Cisco terminology but this means also that the two NICs need to be terminated on the same switch otherwise you will see the two switches complaining of seeing the same MAC address flapping or moving on the two ports of the two switches.

We have implemented some bundles using LACP with some success but this requires this change in design.

Hope to help

Giuseppe

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