The ATM End System Address (AESA) of this interface
can be configured by entering the full 20 octet AESA,
or the 6 octet ESI and 1 octet Selector Byte.
If the ESI and Selector Byte are entered, the full AESA
will be formed using a 13 octet prefix from ILMI.
The full AESA can be read using ciscoAtmIfDerivedAESA.
A length of zero indicates that no AESA is configured.
For the switch, the AESA address can only
exist on the cpu port.