ILMI - Interim Local Management Interface

ILMI - The Interim Local Management Interface was developed by the
ATM Forum to allow UNI management information to be exchanged between
UNI Management Entities (UMEs) within UNI peers.  UNI peers, in this
context, are:

                           Private
                             UNI
            ATM End-System<---|--->Private ATM switch


                            Public
                             UNI
            ATM End-System<---|--->Public ATM Switch

                            Public
                             UNI
        Private ATM Switch<---|--->Public ATM Switch


ILMI information is exchanged over a direct encapsulation of SNMP
version 1 (RFC 1157) over AAL5 (required) and, optionally, over AAL
3/4 using a well-known VPI/VCI value (VPI=0, VCI=16).  Management
information related to the Physical Layer, ATM Layer, Virtual Path
Connections, Virtual Channel Connections, Address Registration, as
well as ATM Layer Statistics, is represented in a standard MIB
structure called the ATM UNI ILMI MIB.

As the name implies, the ATM Forum developed this capability as an
interim standard until the CCITT and ANSI standards for local
management procedures in the M-plane (Management Plane of the B-ISDN
Reference Model) are finalized.