What are VPIs (Virtual Path Identifiers)?

Career: Vpi

A Virtual Path Identifier, or VPI, is a component used in Asynchronous Transfer Mode (ATM) networking to identify virtual paths within a network. The VPI is part of the ATM cell header and works alongside the Virtual Channel Identifier (VCI) to route data cells through an ATM network to their destination. VPIs help in managing and grouping multiple virtual channels together, simplifying network management and increasing efficiency. They are crucial for traffic engineering and quality of service in ATM-based communication systems.