DLCI
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A data link connection identifier (DLCI) is a channel number which is attached to frame relay data frames to tell the network how to route the data. A 13-bit field that defines the destination address of a packet. The address is local on a link-by-link basis.
Frame relay is statistically multiplexed, which means that only one frame can be transmitted at a time but many logical connections can co-exist on a single physical line. The DLCI allows the data to be logically tied to one of the connections, so that once it gets to the network it knows where to send it.
The standard allow existence of 1023 DLCIs. DLCI 0 - 15 and 1,008 - 1023 are used for management and control purpose and 16 - 1007 are reserved/used for data transportation.
Moreover, is used by PVC and SVC.
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