Enable jumbo frames for the entire traffic that passes through a vSphere Distributed Switch.
When you change the MTU size of a vSphere Distributed Switch, the physical NICs that are assigned as uplinks are brought down and up again. This causes a short network outage of between 5 to 10 milliseconds for virtual machines or services that are using the uplinks.
- In the vSphere Web Client, navigate to the distributed switch.
- On the Manage tab, click Settings and select Properties.
- Click Edit.
- Click Advanced and set the MTU property to a value greater than 1500 bytes.
You cannot set the MTU size to a value greater than 9000 bytes.
- Click OK.