February 5, 2012

Port Channels, ESXi 4.1 and the Management Network

Now that I have a few of our ESX hosts upgraded from ESX 4 to ESXi 4.1 I’ve noticed something about the Load Balancing policy on vSwitch0.  Like a lot of people we have multiple GbE connections that go into vSwitch0 (at least on these specific hosts), as usual when you first install ESXi it will set the Load Balancing policy to be based on the Virtual Port ID.

Next I configured the other two adapters that are on this system into vSwitch0
Now I can see in the properties of the vSwitch that vmnic0, vmnic1 and vmnic2 are all listed as active adapters.
But when I go to Management Network it only shows two of the adapters as active and the third adapter is listed as unused.
In ESX I would set the vSwitch to use a Load Balancing policy of IP Hash to work with our port channel we have configured on our switches and it would also change the Load Balancing policy on the included portgroups.
In ESXi it changes the Load Balancing policy for the Virtual Machine network to IP Hash but it does not change the Load Balancing policy for the Management Network, this stays configured as based on Virtual Port ID.
VM Network shows as IP Hash and has all 3 adapters configured as active same as the vSwitch configuration
However the Management Network still shows Virtual Port ID with 2 NICs active and 1 unused

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About mike
I am currently a Consulting Architect working for Nexus Information Systems in the Twin Cities, MN area. My professional summary is available via my LinkedIn page. I can be contacted by the Contact Me link at the top of the site. I also spend (too much) time on Twitter so feel free to follow or send me a tweet.

  • Kgb

    Thanks for this, we were banging our head against a wall until we found your post.

  • Kgb

    Thanks for this, we were banging our head against a wall until we found your post.

  • Kgb

    Thanks for this, we were banging our head against a wall until we found your post.