vmotion fails. msg.vmk.status.VMK_IS_DISCONNECTED (195887150).

Morning All,

I was hoping someone could point me in the right direction, as I have now ran out of idea with this very strange vMotion issue.

Within one of my datacentres, I have two esxi servers, esx01 and esx02, which are connected to two 10Gb switches.

Each esx server has two 10Gb adapters (vmnic06 and vmnic07) which are configured in a distrbuted switch. We then have a number of

port groups.

I have a vmkernel (vmk3) configured on both nodes that sit within a dedicated portgroup (none routeable vlan) which is configured for vmotion. Vmotion is not set anywhere else.

So, when I do a vmotion while the VM is online from esx01 to esx02, it works without issue. However, when I try to vmotion from esx02 back to esx01, it fails at 14% with the following error:

Migration to host <IP> failed with error msg.vmk.status.VMK_ECONNRESET (195887179).

The migration transfer failed during the receive operation to socket 71509975775520: received 0/72 bytes: Connection reset by peer

And

msg.vmk.status.VMK_IS_DISCONNECTED (195887150).

If the VM is shutdown, it migrates without issue.

Now, if I remove vmnic7 from the DVS on esx01, it works without issue.

VMKPing, pings etc all work from the cli.

All vlans are configured on the ports.

Any ideas?

Thanks

Paul