Virtual Circuit Identifier
- Virtual Circuit Identifier
A Virtual Circuit Identifier (VCI) is a unique identifier which indicates a particular virtual circuit on a network. It is a 16-bit field in the header of an ATM cell. The VCI, together with the VPI (Virtual Path Identifier) is used to identify the next destination of a cell as it passes through a series of ATM switches on its way to its destination.
ATM switches use the VPI/VCI fields to identify the virtual channel link {VCL} of the next network that a cell needs to transit on its way to its final destination. The function of the VCI is similar to that of the data-link connection identifier DLCI in Frame Relay.
References
Cisco Systems "Multiband Switch and Service Configuration"
ee also
VPI
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2010.
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Virtual Circuit Identifier — (VCI) est un identifiant de 16 bits dans l entête des cellules Asynchronous Transfer Mode (ATM). Le VCI, avec le Virtual Path Identifier (VPI) est utilisé pour identifier le circuit et la destination suivante de la cellule à travers les switches… … Wikipédia en Français
Virtual Path Identifier — (VPI) est un identifiant de 8 bits (interface UNI) ou 12 bits (interface NNI) dans l entête des cellules Asynchronous Transfer Mode (ATM). Le VPI, avec le Virtual channel identifier (VCI) est utilisé pour identifier le circuit et la destination… … Wikipédia en Français
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