| 摘要 |
PROBLEM TO BE SOLVED: To achieve interconnection between a full synchronous type network of prior art and frame communication network of a next-generation type, that is needed for transition to a next-generation packet network and wide-area connection services. SOLUTION: A network, which is composed of two or more information relaying apparatuses each of which has one or more line interfaces, uses data packets to execute communication between the information relaying apparatuses, and has a means for controlling a path through which the packets pass between the optional edge points in the case of communication between two optional points in the network. The communication path control means adopts a hierarchical logic path control method including: a first communication path management function terminated at the end points of a communication interval and carrying out communication management of a connection level; and a second communication path management function terminated by each communication interval between optional information relaying apparatuses adjacent to each other included in the communication interval, and carrying out communication management by each interval of a physical line or logical line. COPYRIGHT: (C)2011,JPO&INPIT
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