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Vmnic used = HEX(VM virtual network adapter MAC Address) mod (Number of vmnics)
![vmware mac address range vmware mac address range](http://2.bp.blogspot.com/-E2Me14sBwuk/VPC57mop9II/AAAAAAAAJmU/8_B8tQlLD40/s1600/VMStep1.png)
You can also manually specify a MAC address for your VM despite I suggest you to let VMware decide which MAC address assign to your virtual network adapter to prevent MAC address duplications across VMs. SMBIOS UUID for the physical ESXi machine, and a hash based on the name of the entity that the MAC address is being generated for. The MAC address range observed by VMware is from 00:50:56:00:00:00 to 00:50:56:3F:FF:FF and MAC Address generation algorithm guarantees unique addresses within a VM and attempts to provide unique MAC addresses across VMs.Īs referred by MAC Address Generation article last MAC 24 bits (3 octets) are assigned in this way: They represents MAC OUI (Organizationally Unique Identifiers) and are common for all VMware's created virtual network adapters. This is assigned by default by VMware during virtual network adapter creation and this process has a regular pattern. This setting provides an even distribution of traffic if the number of virtual Ethernet adapters is greater than the number of physical adapters.Įvery VM's virtual network adapter has a MAC address assigned to it. When you use this setting, traffic from a given virtual Ethernet adapter is consistently sent to the same physical adapter unless there is a failover to another adapter in the NIC team.Replies are received on the same physical adapter as the physical switch learns the port association. Route based on source MAC hash choose an uplink based on a hash of the source Ethernet MAC address.
![vmware mac address range vmware mac address range](https://i2.wp.com/wahlnetwork.com/wp-content/uploads/2013/04/vm-mac-address.png)
Quoting VMware Virtual Networking Concepts guide: