Jumbo frames reduce the CPU load caused by transferring data. Enable jumbo frames on a VMkernel network interface by changing the maximum transmission units (MTU) of the VMkernel interface.

1

Log in to the vSphere Client and select the Hosts and Clusters inventory view.

2

On the host Configuration tab, click Networking.

3

Click Properties for the vSphere standard switch associated with the VMkernel to modify.

4

On the Ports tab, select the VMkernel interface and click Edit.

5

Set the MTU to 9000, and click OK.