Enabling jumbo frame support on a virtual machine requires an enhanced VMXNET adapter for that virtual machine.
- Locate the virtual machine in the vSphere Client.
- Select a data center, folder, cluster, resource pool, or host and click the VMs tab.
- Click Virtual Machines and click the virtual machine from the list.
- From the Actions menu, select Edit Settings.
- Select the Virtual Hardware tab in the dialog box displaying the settings.
- Expand the Network adapter section. Record the network settings and MAC address that the network adapter is using.
- Click the times-circle button to remove the network adapter from the virtual machine.
- From the Add new device drop-down menu, select Network Adapter.
The New Network section is added to the list in the Virtual Hardware tab.
- Expand the New Network section.
- From the Adapter Type drop-down menu, select VMXNET 2 (Enhanced) or VMXNET 3.
- Set the network settings to the ones recorded for the old network adapter.
- Set the MAC Address to Manual, and type the MAC address that the old network adapter was using.
- Click OK.
What to do next
- Check that the enhanced VMXNET adapter is connected to a standard switch or to a distributed switch with jumbo frames enabled.
- Inside the guest operating system, configure the network adapter to allow jumbo frames. See the documentation of your guest operating system.
- Configure all physical switches and any physical or virtual machines to which this virtual machine connects to support jumbo frames.