Configure unique MAC addresses on multiple interfaces

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The same ethernet hardware (MAC) address is used by default on Sun systems with multiple ethernet interfaces. This works fine for failover load balancing or failover groups. It presents a problem when the two interfaces are connected to the same subnet.

To enable uniqe MAC addresses on multiple Sun ethernet interfaces, the BootPROM variable local-mac-address? needs to be set to true. This can be done from the ok prompt or by issuing the following command from the Solaris shell as superuser:

eeprom "local-mac-address?"=true

The quotes escape the question mark which would otherwise be interpreted as a wildcard by the shell.


About Quinn McHenry

Quinn was one of the original co-founders of Tech-Recipes. He is currently crafting iOS applications as a senior developer at Small Planet Digital in Brooklyn, New York.
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