How are mac addresses unique software#

If you use the first method you must stay inside VmwareВ’s allowed MAC addresses (00:50:56:00:00:00 В– 00:50:56:3F:FF:FF) or the VM will not start There are several methods for setting a static MAC address on a VM which are listed below. Just make sure the physical NIC and virtual NIC with the same MAC address are not active on the same physical network at the same time. HP/Compaq NICВ’s use 00:08:02) as the first 3 octets. If you are coming from a physical server you can use the previous NICВ’s range instead, (ie. You do not have to use the Vmware assigned range (00:50:56) for your NICВ’s. Each MAC address must be unique to avoid conflicts with other network devices. The last 3 octets are assigned to all of the NICВ’s for that vendor. The first 3 octets of the MAC address is a unique code assigned to each NIC vendor, this is also called the Organizationally Unique Identifier (OUI), VMwareВ’s OUI is в€°0:50:56В”. MAC addresses are hex values and consist of six groups of hex numbers.

During a cold migration the location of the VM does change so the MAC address of the VM will change.

During a hot migration (Vmotion) the location of the VM does not change, this is also true of a VM that changes hosts due to HA/DRS migration. A VMВ’s MAC address will change if the location of the VM changes, ie.

How are mac addresses unique software#

This is useful for software that is licensed by the MAC address of the server it is running on or if you migrate a physical server to virtual and want to keep the same MAC address. How can I set a static MAC address for my VM?