But thats just a warning your link is slow?
No, VM's was not moving to another host after putting host into maintenance mode.
In many cases the switchport or ESXi pNIC configuration is not correct. Check the switch port configuration (speed: 1000 Mbit, auto-negotiate: enabled). And please check the pNIC settings on your ESXi server that they match the switch port settings.
With the following command you can check the link speed and duplex mode of the pNICs on the ESXi servers:
Sometimes the switch port, the SFP module, the cable or the network card of the server is broken, so that only 100 Mbit are negotiated with enabled auto negotiate. You can also try a different cable or switch port as a test.
Check the vmkernel interface used for vMotion on source and destination hosts. Gb is a requirement for vMotion.
Check for speed mismatches among:
- vMotion vmkernel.
- vmnic used by this vmkernel.
- physical switch port speed.
They should be all set to 1000 or set to auto negotiate 1000.
That's exactly what I wrote...
The concept of where everything is located might be solid in our minds, but sometimes it's important to say that following the logical path is crucial.
Thinking as a packet from the inside to the outside until the issue is isolated.
> vmkernel uses a vmnic > vmnic is physically connected to a physical switch port.
I felt like I needed to put it differently. Hope we helped our colleague there, because that's why we're here after all isn't