A layer 2 transport network, and components thereof, supporting virtual network functionality among customer edge devices. Virtual private network configuration can be accomplished with merely local intervention by preprovisioning extra channel (or circuit) identifiers at each customer edge device and...http://www.google.fr/patents/US8009674?utm_source=gb-gplus-shareBrevet US8009674 - Transport networks supporting virtual private networks, and configuring such networks
Transport networks supporting virtual private networks, and configuring such ...
