LAN IOA addresses

In a Systems Network Architecture (SNA) environment, you can determine the address for each input/output adapter (IOA).

You can use one of two addresses:

• The manufacturer-assigned address that is otherwise known as the burned-in address, preset address, or universally-administered address.
• The locally administered address.

You define the locally administered address, and the system associates it with the adapter. Using a locally administered address minimizes the reconfiguration work when you replace the adapter.

For example, if you use the burned-in address of the adapter, you must configure this address into every device that communicates with the adapter. When you replace the adapter, you must go back to each device and reconfigure them with the burned-in address of the new adapter. You cannot assign the burned-in address of the replaced adapter to the new adapter.

You can avoid the reconfiguration work by associating a locally administered address with the adapter and using this address in all devices that communicate with the adapter. When you replace the adapter, associate the locally administered address with the new adapter. Because the devices already have the locally administered address, you do not need to re-configure them.