Local Management Interface: Difference between revisions

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{{More citations needed|date=September 2008}}

{{cleanup-date|June 2005}}

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

*[[== Frame Relay]] ==

LMI is a signalingset standardof usedsignalling standards between [[routersRouter (computing)|router]]s and [[frameFrame relay]]Relay switches. Communication takes place between a router and the first frameFrame relayRelay switch to which it's is connected to. Information about [[keepalive]]s, global addressing, [[multicastingIP multicast]] and the status of [[virtual circuits]] is commonly exchanged using LMI.

There are three standards for LMI:

{{compu-network-stub}}

* Using [[Data link connection identifier|DLCI]] 0:<ref name ="Odom" />

LMI is a signaling standard used between routers and frame relay switches. Communication takes place between a router and the first frame relay switch it's connected to. Information about keepalives, global addressing, multicasting and the status of virtual circuits is commonly exchanged using LMI.

** ANSI's T1.617 Annex D standard, T1.617

** 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 |year=2008 |publisher=Cisco Press |___location=[[Indianapolis, Indiana|Indianapolis]] |isbn=978-1-58720-181-3 |url=https://archive.org/details/isbn_9781587201813/page/467 |page=[https://archive.org/details/isbn_9781587201813/page/467 467] |url-access=registration }}</ref>

== Carrier Ethernet ==

There are three standards for LMI:

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.

ANSI's Annex D standard, T1.617

ITU-T's Q.933 Annex A standard

The "Gang of Four", for the four companies that developed it: Cisco, DEC, StrataCom and NorTel (Northern Telecom).

==See alsoReferences ==

<references />

*[[Frame Relay]]

==External links==

[[Category:Network protocols]]

*[https://web.archive.org/web/20160401071013/http://communitystring.com/2009/10/frame-relay-lmi/ Additional information on Frame Relay LMI]

[[Category:Computer networking]]

[[Category:NetworkFrame protocolsRelay]]

{{compu-network-stub}}