Hi elgreco81
Thanks for your reply.
I have seen these link before But my question is about vMotion and NOT storage. I do understand that ISCSI storage need MTU 9000 and also vMotion need that as well as i worked before with ESX and ISCSI storage where i had enabled mtu 9000 to vMotion and storage.
But this discussion was about vMotion and ESXi 4.x.
The vmkping -d would have been the correct test but my ESX4.0 the -d option does not exist. See below link
As a result i cannot test it. and if i use just vmkping -s 9000 that seems to work fine although the mtu is not set on vds and uplink which makes me wonder how it is possible
Regards,
Eagle11