Virtual Path Identifier


Virtual Path Identifier

Virtual Path Identifier refers to an 8-bit (user to network packets) or 12-bit (network-network packets) field within the header of an Asynchronous Transfer Mode packet. The VPI, together with the VCI (Virtual Channel 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. VPI is useful to reduce the switching table for some Virtual Circuits which have common path.

ee also

Virtual Channel Identifier (VCI)


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  • 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

  • Virtual Path Identifier — Asynchronous Transfer Mode (ATM) ist eine Technik der Datenübertragung, bei der der Datenverkehr in kleine Pakete – Zellen oder Slots genannt – mit fester Länge (53 Byte, davon 48 Byte Daten, 5 Byte Zellkopf) codiert und über asynchrones… …   Deutsch Wikipedia

  • Virtual Path Identifier — VPI (англ. Virtual Path Identifier) идентификатор виртуального пути в технологии . Идентификатор VPI используется для указания, какому виртуальному маршруту принадлежит виртуальный канал. 8 ми (для пакетов пользователь сеть) или 12 ти битное (для …   Википедия

  • Virtual Path Identifier —    Abbreviated VPI. In an Asynchronous Transfer Mode (ATM) cell header, an 8 bit field used to identify virtual paths between users or between users and networks.    See also Asynchronous Transfer Mode …   Dictionary of networking

  • 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 Channel Identifier — A Virtual Channel 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… …   Wikipedia

  • 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… …   Wikipedia

  • Virtual circuit — In telecommunications and computer networks, a virtual circuit (VC), synonymous to virtual connection and virtual channel, is a connection oriented communication service that is delivered by means of packet mode communication. After a connection… …   Wikipedia

  • Payload Type Identifier —    Abbreviated PTI. In an Asynchronous Transfer Mode (ATM) cell, a field contained in the 5 byte cell header that defines the type of information in the payload area, including user, network, and management information.    See also Cell Loss… …   Dictionary of networking

  • Identificador de Ruta Virtual — VPI (sigla de Virtual Path Identifier, Identificador de Ruta Virtual) hace referencia a un campo de 8 bits en el encabezado de una celda ATM. El VPI, junto con el VCI, se utiliza para identificar el próximo destino de una celda a medida que… …   Wikipedia Español


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