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| Definition | : | Virtual Path Identifier |
| Category | : | Computing » Networking |
| Country/ Region |
: | Worldwide
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| Popularity | : |
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Virtual Path Identifier (VPI) refers to an 8-bit (user-to-network cells) or 12-bit (network-network cells) field within the header of an Asynchronous Transfer Mode (ATM) cell. The VPI, together with the Virtual Channel Identifier (VCI) is used to identify the next destination of a cell as iteries of ATM switches on its way to its destination.
The full form of VPI is Virtual Path Identifier