Local Management Interface: Difference between revisions

Revision as of 14:19, 12 September 2008

Revision as of 19:44, 21 September 2008

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'''Local Management Interface (LMI)''' is a signaling standard used between [[router]]s and [[frame relay]] switches. Communication takes place between a router and the first frame relay switch it's connected to. 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: ANSI's T1.617 Annex D standard, T1.617; ITU-T's Q.933 Annex A standard; and the "Gang of Four" standard, named for the four companies that developed it: Cisco, DEC, StrataCom and NorTel (Northern Telecom).

The "Gang of Four" LMI standard uses DLCI 1023<ref name="Odom">{{cite book |title=CCNA ICND2 |last=Odom |first=Wendell |authorlink= |coauthors= |year=2008 |publisher=Cisco Press |___location=[[Indianapolis, Indiana|Indianopolis]] |isbn=1-58720-181-X |pages=467 |url= }}</ref>. The T1.617 Annex D and Q.933 Annex A standards use DLCI 0<ref name ="Odom" />.

The "Gang of Four" LMI standard uses DLCI 1023, the ANSI Annex D standard uses DLCI 0.

== References ==

<references />

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