6.7

Table Of Contents
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.
u
VMware OUI allocation
<vpxd>
<macAllocScheme>
<VMwareOUI>true</VMwareOUI>
</macAllocScheme>
</vpxd>
u
Prefix-based allocation
<vpxd>
<macAllocScheme>
<prefixScheme>
<prefix>005026</prefix>
<prefixLength>23</prefixLength>
</prefixScheme>
</macAllocScheme>
</vpxd>
u
Range-based allocation
<vpxd>
<macAllocScheme>
<rangeScheme>
<range id="0">
<begin>005067000001</begin>
<end>005067000001</end>
</range>
</rangeScheme>
</macAllocScheme>
</vpxd>
4 Save the vpxd.cfg.
5 Restart the vCenter Server host.
MAC Address Generation on ESXi Hosts
An ESXi host generates the MAC address for a virtual machine adapter when the host is not connected to
vCenter Server. Such addresses have a separate VMware OUI to avoid conflicts.
The ESXi host generates the MAC address for a virtual machine adapter in one of the following cases:
n
The host is not connected to vCenter Server.
vSphere Networking
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