Nutanix: vmnic down warnings after vSphere 6.0 upgrade

After we upgraded our Nutanix clusters some days back from vSphere 5.5 to vSphere 6.0 we got a massive amount of ongoing warnings, which claimed that two vmnics on each node were down (“Link on NIC vmnicX of host xx.xx.xx.xx is down”). 2_list

In general that was correct because the vmnics were down…….but they have been down all the time and have never even been cabled. We didn´t had any recurring warnings when running vSphere 5.5, so it seemed quite fast to be related to the vSphere 6.0 upgrade (and also the fact that multiple cluster showed the same behavior).

The solution to fix it was quite easy at the end. It was an issues between NCC 2.1.0 and vSphere 6.0. So if you are running vSphere 6.0 make sure you update to NCC 2.1.1, which was released last week.

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