PACKET TRANSFER DEVICE, PACKET TRANSFER CONTROL METHOD, AND SETTING METHOD FOR PACKET TRANSFER DEVICE

摘要

PPROBLEM TO BE SOLVED: To mutually connect a plurality of VLAN networks geographically far from each other by using an MPLS network, while maintaining isolation of each VLAN network. PSOLUTION: In a device for interworking the VLAN network and the MPLS network, a VLAN ID and an MPLS label are associated with each other. In a device for interworking from the VLAN network to the MPLS network, an output MPLS label is determined from a pair of the VLAN ID and the information in the layer 3 or layer 4 header of a packet. The output MPLS label is assigned with an independent value for each VLAN. In a device for interworking from the MPLS network to the VLAN network, the input MPLS label is associated with the VLAN ID. PCOPYRIGHT: (C)2008,JPO&INPIT