virtual circuit identifier การใช้

• Rather than a DLCI, however, interfaces have forwarding tables that specify the outgoing interface, virtual path identifier, and virtual circuit identifier.
• Routing equipment must translate NSAP addresses to SNPAs ( SubNetwork Point of Attachment ) to route OSI packets; VCI ( Virtual Circuit Identifier ) numbers are an example of a datalink layer SNPAs in ATM; when OSI packets are sent encapsulated in IP packets the IP address is considered an SNPA.