In most network deployments, generated MAC addresses are a good approach. However, you might need to set a static MAC address for a virtual machine adapter with unique value.
The following cases show when you might set a static MAC address:
- Virtual machine adapters on different physical hosts share the same subnet and are assigned the same MAC address, causing a conflict.
- Ensure that a virtual machine adapter always has the same MAC address.
By default, VMware uses the Organizationally Unique Identifier (OUI)
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for manually generated addresses, but all unique manually generated addresses are supported. Mac Address Vmware Static
Note: Make sure that no other non-VMware devices use addresses assigned to VMware components. For example, you might have physical servers in the same subnet, which use
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as static MAC addresses. The physical servers do not belong to the vCenter Server inventory, and vCenter Server is not able to check for address collision. Maintaining and Changing the MAC Address of a Virtual Machine When a virtual machine is powered on, VMware Workstation automatically assigns each of its virtual network adapters an Ethernet MAC address. MAC stands for media access control. A MAC address is the unique address assigned to each Ethernet network device. MAC Address Format. The host generates MAC addresses that consists of the VMware OUI 00:0C:29 and the last three octets in hexadecimal format of the virtual machine UUID. The virtual machine UUID is based on a hash calculated by using the UUID of the ESXi physical machine and the path to the configuration file (.vmx) of the virtual machine. In VMware View 4.5 and later if a VM is assigned to a user their MAC address is retained after recompose operations. For non-persistent pools and for VMs that haven’t yet been assigned to a user, a recompose operation will be performed as delete-then-recreate resulting in MAC address change. According to the VMware OUI allocation scheme, the hypervisor generates MAC addresses that consists of the VMware OUI 00:0C:29 and the last three octets of the virtual machine UUID in hexadecimal format. The virtual machine UUID is based on a hash calculated by using the UUID of the ESXi physical machine and the path to the configuration file.
Mac Address For Vmware Workstation
VMware ESX' MAC addresses flaps with Cisco 4506 Hi. We have a Cisco 4506 with a Supervisor V, running cat4500-ENTSERVICES-M, version 12.2(46)SG. Several IBM x3850s running VMware ESX 4.0.0 332073 are connected to the 4506 with 4 traffic ports, 2 management ports and 1 RSA port each.