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

1

In the vSphere Web Client, navigate to the host.

2

Under Manage, select Networking and then select VMkernel adapters.

3

Select a VMkernel adapter from the adapter table.

The properties of the adapter appear.

4

Click the name of the VMkernel adapter.

5

Click Edit.

6

Select NIC settings and set the MTU property to a value greater than 1500.

You can increase the MTU size up to 9000 bytes.

7

Click OK.