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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.〔(【引用サイトリンク】url=http://www.infocellar.com/networks/frame-relay/dlci.htm )〕 The standard allows the existence of 1024 DLCIs. DLCI 0 reserved for ANSI/q993a LMI standard - only numbers 16 to 976 are usable for end-user equipment. DLCI 1023 is reserved for Cisco LMI - however, the numbers usable are from 16 to 1007.〔(【引用サイトリンク】title=Frame Relay LMI )〕 In summary, only numbers from 16 to 1007 are available for end users' equipment (If using Cisco LMI). The rest are reserved for various management purposes.〔(【引用サイトリンク】title=What is Frame Relay )〕 DLCI are Layer 2 Addresses that are locally significant. No two devices have the same DLCI mapped to its interface in one frame relay cloud. ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Data link connection identifier」の詳細全文を読む スポンサード リンク
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