I am having problems getting Jumbo Frames working over my iSCSI connection.
Here is what I try.
- 4 1GbE connections on 4 different subnets on my NAS4Free array for iSCSI, MTU set at 9000
- 2 redunant switches with the MTU set at their maximum 12288(or something like that)
- 1 vSwitch MTU 9000
- 4 vNICs MTU 9000
If I turn the vNICs MTU from 1500 to 9000 everything stops working, I can't even turn on or off a VM on the associated datastore.