Enabling jumbo frame on Hyper-V 2012 R2 Core NIC using powershell

Enabling jumbo frame on a NIC using powershell is shown below :

Enabling jumbo frames using powershell

To list advanced properties of NIC3 : Get-NetAdapterAdvancedProperty -Name "NIC3"

To change jumbo mtu to 9000 : Get-NetAdapterAdvancedProperty -Name "NIC3" -RegistryKeyword "*jumbopacket" | Set-NetAdapterAdvancedProperty -RegistryValue 9000

Jumbo frames

Jumbo frames are Ethernet frames with more than 1500 bytes of payload. Generally, jumbo frames can carry up to 9000 bytes, but variations do exist. Enabling jumbo frames in specific cases (say, in your Storage Area Network) can improve performance and network throughput. But, if you are enabling it, all devices connecting it including the source, destination and other devices in between like switches etc must support jumbo frames and should be enabled.

Enabling jumbo frames on a VMware virtual network adapter (vmxnet3) is shown below :

Jumbo Packet on vmxnet3 adapter

Steps to enable jumbo frames on a VMware vSphere 4.1 vSwitch is shown below :

List vSwitch

 By default it is 1500 MTU. Say, you want to change vSwitch1 to 9000 MTU. It can be done as follows :

Enabling jumbo frame with MTU 9000 on vSwitch1

You can verify connectivity after enabling jumbo frames by specifying packet size using ping command as given below :

Verifying jumbo frames

Creating VHD/ VHDX templates

Templates can save you lot of time, instead of building a server from scratch. Following are the steps to create a VHD/ VHDX template that can be used on Hyper-V servers.

1.Create a virtual machine (say Windows Server 2008 R2 with 80 GB hard drive)

2.Make sure you create fixed disk

3.Install OS

4.Install Windows updates

5.Install Hyper-V integration services

6.Install any applications as per your requirement

Once you are done with all the above steps, now its time to sysprep your machine. This is shown below :

sysprep

Make sure you check Generalize and shutdown options. Once the system completes sysprep operation, it will automatically shutdown. You can now take a copy of this VHD disk, rename it as you wish and save it to a location where you keep your templates. Also, make sure to make this file as read-only, so that you can avoid booting it up accidentally.

Note : You can create VHD templates for OS earlier than Windows Server 2012 and VHDX templates for Windows Server 2012 and later.

VMware virtual switches

Virtual Standard Switch (VSS)

VSS

Virtual Distributed Switch (VDS)

VDS

Reference : mylearn.vmware.com