If you are changing from range- or prefixed-based allocation to the VMware OUI allocation, you must set the allocation type in the vpxd.cfd file and restart the vCenter Server.

Decide on an allocation type before changing the vpxd.cfg. For information on allocation types, see MAC Address Generation

1

On the host machine for your vCenter Server, navigate to …\VMware\VMware VirtualCenter.

2

Open the vpxd.cfg file.

3

Decide on an allocation type to use and enter the corresponding XML code in the file to configure the allocation type.

The following are examples of XML code to use.

Note

Use only one allocation type.

VMware OUI allocation

<vpxd>
   <macAllocScheme>
      <VMwareOUI>true</VMwareOUI>
   </macAllocScheme>
</vpxd>

Prefix-based allocation

 <vpxd>
    <macAllocScheme>
      <prefixScheme>
         <prefix>005026</prefix>
         <prefixLength>23</prefixLength>
      </prefixScheme>
   </macAllocScheme>
</vpxd>

Range-based allocation

<vpxd>
   <macAllocScheme>
       <rangeScheme>
          <range id="0">
             <begin>005067000001</begin>
             <end>005067ffffff</end>
          </range>
       </rangeScheme>
   </macAllocScheme>
</vpxd>
4

Save the vpxd.cfg.

5

Restart the vCenter Server host.