Patent ID: 9614758
Date: 2017-04-04
CPC Classifications: H04L

Claim:
1. A communication system, comprising: a first switch that exchanges information with a neighboring switch by a preset routing protocol to form a forwarding table and that references the forwarding table to forward a packet; a second switch that forwards the packet in accordance with an instruction from a preset controller; the preset controller that gives the instruction to the second switch; and an integrated controller that instructs the preset controller to forward the packet along a path specified for the second switch and to generate a virtual network constituted by a virtualized switch as the first switch, the integrated controller causing information exchange to be performed between the second switch mapped to the virtual network and the first switch by the preset routing protocol to cause the packet to be forwarded along a pre-calculated path, wherein the first switch is a switch that decides on a path using an IS-IS (Intermediate System to Intermediate System), and wherein the integrated controller causes the preset controller to output an IS-IS packet destined from the second switch to the first switch so as to allow the information to be exchanged between the first and second switches using the IS-IS.