To enable Jumbo packets on server core is not as straight forward as a “full fat” version of windows. It just needs a little powershell know how.
The first step is to ensure at the VMware level you are using a “VMXNET 3” adapter.
The next step is to ensure the machine is set to use jumbo packets at the virtual nic level using:
netsh interface ipv4 show interfaces
and also possibly the ipv6 version of the command if you have ipv6 configured
netsh interface ipv6 show interfaces
Once confirmed, set the MTU using:
netsh interface ipv4 set subinterface "15" mtu=9000 store=persistent netsh interface ipv6 set subinterface "15" mtu=9000 store=persistent
Once completed you will see the following info to replace the standard 1500 MTU size:
The final step is to ensure the adapter is set to accept jumbo frames on the interface:
Set-NetAdapterAdvancedProperty -Name "Ethernet 2" -DisplayName "Jumbo Packet" -RegistryValue "9014"
Easy when you know how.