VPN operation method for common data packet distribution network

摘要

The method involves separating logically layer three of virtual private networks from each other by allocating disjoint partial address locations of a predetermined homogenous total address area to the layers. Each layer has an associated identification which serves to identify the disjoint partial address location and which is part of the address of each individual subscriber to the layer. An identification characterising a layer begins at a fixed bit position in an individual subscriber address and has variable or fixed length. The layer separation is realised by filtering data packets and routing information in routers of the distribution network with the identification.