3Com 7600 manual Interim Local, Interface Ilmi

12-4CHAPTER 12: ATM, LAN EMULATION, AND VIRTUAL LANS

	Q Point-to-point and point-to-multipoint connections
Switched Virtual	SVC connections are defined dynamically as they are needed and released
Channels	when not needed, using signalling as per ATM Forum UNI standards. By
	using SVC, ATM devices can exchange connection characteristics when
	establishing connections. These connections remain active for as long as
	the application demands. Both point-to-point and point-to-multipoint
	connections can be established. SVC eliminates the need for an external
	management station for setting up virtual channels.
	The characteristics of the SVC connection include:
	Q Connections initiated by the user/application
	Q Connections established and released dynamically
	Q Connections established via the signalling protocol
	Q Varied connection duration
Interim Local	The Interim Local Management Interface (ILMI) communication protocol
Management	is an open management protocol that supports the bi-directional
Interface (ILMI)	exchange of management information between all end-stations and the
	switches to which they are connected.
	The ILMI functions for a UNI provide status, configuration, statistics, and
	control information about link and physical layer parameters at the UNI.
	In addition, it provides for address registration across the UNI. ILMI
	communications use SNMP directly over the AAL5.
	For any ATM device, there is a connecting device associated with each
	UNI that supports the ILMI functions for that UNI.
ILMI Management	Managed objects are accessed via a virtual information store, termed the
Information Base	Management Information Base or MIB. Each object defined in the MIB
(MIB)	has a name, a syntax, and an encoding. The UNI ILMI attributes are
	organized in a standard MIB structure; there is one UNI ILMI MIB structure
	instance for each side of the UNI.
	The IILMI MIB provides the management application with the capability to
	control and monitor the ATM link and physical layer. The following types
	of management information are available in the ILMI ATM UNI MIB: