Local Management Interface: Difference between revisions

Revision as of 13:48, 28 March 2017

Revision as of 13:11, 1 January 2019

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{{Refimprove|date=September 2008}}

'''Local Management Interface (LMI)''' is a term for some signaling standards used in networks, namely [[frame relay]] and [[Carrier Ethernet]].

== Frame Relayrelay ==

LMI is a set of signalling standards between [[Router (computing)|router]]s and frame relay switches. Communication takes place between a router and the first frame relay switch to which it's connectedis toconnected. Information about [[keepalive]]s, global addressing, [[IP Multicast]] and the status of [[virtual circuits]] is commonly exchanged using LMI.

There are three standards for LMI:

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** ITU-T's Q.933 Annex A standard

* Using DLCI 1023:

** The "Gang of Four" standard, developed by [[Cisco]], [[Digital Equipment Corporation|DEC]], [[StrataCom]] and [[Nortel]] <ref name="Odom">{{cite book |title=CCNA ICND2 |last=Odom |first=Wendell |authorlink= |coauthors= |year=2008 |publisher=Cisco Press |___location=[[Indianapolis, Indiana|Indianapolis]] |isbn=1-58720-181-X |url= |page=467 }}</ref>

== Carrier Ethernet ==

Ethernet Local Management Interface (E-LMI) is an Ethernet layer operation, administration, and management (OAM) protocol defined by the [[Metro Ethernet Forum]] (MEF) for Carrier Ethernet networks. It provides information that enables auto configuration of customer edge (CE) devices.