Configure MAC addresses for Hyper-v

Each physical network adapter has a Media Access Control (MAC) address (sometimes called a hardware address), that is unique identifier of the device on the network. The same is true of virtual network adapters.

Hyper-v has a pool of address and assign them as you create virtual network adapter.

To view or modify the MAC address pool for the Hyper-v server, open Virtual Switch Manager and select MAC Address Range under Global Network Settings.

The Hyper-v MAC address has the following sections:

Byte 1 to 3: OO-15-5D，which is an OUI registered by Microsoft.

Byte 4 and 5: Consists of the last two bytes of the IP address assigned to the server’s physical network adapter, converted to hexadecimal notation.

Byte 6: from 00 to FF, which provides 256 possible addresses

The default pool of 256 addresses is expected to be sufficient of most cases, if you need enlarge the address pool, you can modifying the second to last bytes as well increases the pool from 256 to 4,096 or more, as in the following range:

256 address pool: 00-15-5D-FE-FA-00 to 00-15-5D-FE-FA-FF

4096 address pool: 00-15-5D-FE-F0-00 to 00-15-5D-FE-FF-FF

65536 address pool: 00-15-5D-FE-00-00 to 00-15-5D-FE-FF-FF

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You can use Get-Host cmdlet on Windows PowerShell to view Mac address range.

You can use Set-Host cmdlet on Windows PowerShell to change Mac address range.

Virtual network adapters use dynamically assigned MAC addresses by default, but you can configure the virtual network adapters to use static MAC addresses.

Expand a network adapter in the Settings dialog box of a VM, access to the Advanced Feature page. On this page，you can configure MAC address of the Virtual Network Adapter：

You can use Set-VMNetworkAdapter cmdlet on Windows PowerShell to change MAC address of virtual network adapter.

VMName: Virtual machine name

StaticMACAddress: To use static MAC address