This object is used by a device (with a Token Ring interface) to set a Locally Administered Address (LAA) for it's MAC hardware address. When set, this LAA will override the default Universally Administered Address or burned in address of the interface.

For devices that do not support LAA:

- a read will return all zeros.

- any write attempt will return BADVALUE.

For devices that support LAA:

- valid values are 4000 0000 0000 to 4000 7fff ffff, and 0000 0000 0000 (a value of all zeros, causes interface to use the burned in address).

- a set (write) with an invalid value, returns BADVALUE.

- after a write, new values will only become active after the Token Ring interface has been closed and then opened again.

- a read of ctIfLAA will always return same value as ifPhysAddress, except in the case where;

o ctIfLAA has been set, but interface has not yet been closed and reopened, in this case the last set value is returned.

Note that a read of ifPhysAddress will always return the physical address currently being used by the interface.