To resolve this issue, verify that the MTU size is set to 9000 on end-to-end (virtual switch and physical switch). If not, you have to change the MTU size to 1500 in the vmkernel port group.
To change the MTU size on the vSphere standard switch:
- Click the Hosts configuration tab.
- Click Networking.
- Click Properties for the vSphere standard switch associated with the VMkernel to be modified.
- Click the VMkernel interface, and click Edit.
- Set the MTU to 1500.
- Click OK.
To change the MTU size for the vNetwork Distributed Switch:
- Select the Networking inventory view.
- Select the vNetwork Distributed Switch.
- Right-click the Distributed Virtual Switch, and click Edit Settings.
- Click the Properties tab.
- Click Advance.
- Set MTU to 1500.
- Click OK.