Looking to enable jumbo frames on several of our ESXi 5.0.0 VM's which are doing iSCSI to an IBM Gen2 XIV.
The XIV supports jumbo frames -- but only at MTU 4500 rather than the more common 9000.
Our VM's are using vmxnet3 vNICs and these apparently only lets us choose between an MTU size of 1500 and 9000. Any way to adjust this to 4500? Would 9000 work and just auto-drop down to 4500 at the TCP/IP level thanks to MSS? Should we use the E1000 driver instead which appears to have more MTU size options?
Thanks!