I configured jumbo frame on my 5,5 U3 to connect with a DotHill NAS. I set the same MTU on my NAS and network switches too.
Just I have a doubt.
I read this document:
It says that one has to change the MTU of the virtual switch, but it says nothing about the associated VMkernel port.
So now I have the vswitch with the Jumbo MTU (9000), but the ISCSI vmkernel port has a normal 1500 MTU.
Is it correct?
Any suggestion, link, doc etc.etc. will be very appreciated.
Have a nice day
You'll have to configure the MTU size from end-to-end, i.e. including the VMkernel port group.
You can test whether Jumbo frames work, using the vmkping command. Make sure you provide the required flags (like don't fragment) in the command. A good example for how to test, and troubleshoot Jumbo frames can be found at Troubleshooting ESXi Jumbo Frames – Rickard Nobel