Data link connection identifier
A data link connection identifier (DLCI) is a Frame Relay 10 bit wide link-local virtual circuit identifier used to assign frames to a specific PVC or SVC. Frame Relay networks use DLCIs to statistically multiplex frames. DLCIs are preloaded into each switch and act as road signs to the traveling frames.[1]
The standard allows the existence of 1024 DLCIs, however only numbers from 16 to 991 are available for end users' equipment. The rest are reserved for various management purposes.[2]
References
- ^ "DLCI's". Retrieved 22 March 2011.
- ^ "What is Frame Relay". Retrieved 2007-09-18.
FRAME RELAY IS A SPECIAL TYPE OF L2 SWITCHING TECHNOLOGY FOR CREATING MULTI ACCESS WAN LINK BETWEEN INTERNET ROUTER.
AS IT IS MULTI ACCESS LINK SO,EVERY ROUTER NEEDS A LAYER 2 ADDRESS TO CONNECT TO DIFFERENT ROUTERS IN THE NETWORK. THIS L2 ADDRESS IS CALLED DLCI{DATA LINK CONNECTION IDENTIFIER} WHEN A SERVICE PROVIDER PROVIDES FRAME RELAY CONNECTION TO ANY ROUTER IT ALLOCATES ONE OR MORE DLCI TO THAT ROUTER. SO DLCI IS LOCALY SIGNIFICANT TO ANY ROUTER.
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