Path control method adapted to autonomous system routing protocol for communication network

摘要

A path control method includes a procedure for developing a path control message including regional information in transmission on the network. The regional information designates a path and/or a path length for transmitting the path control message. The path control message includes a regional property for instructing each node as to how to process the regional information either in a strict manner or in a flexible manner. With reference to the regional information and/or the regional property, each node is capable of selecting a destination node to which the path control message is to be transmitted, stopping the further transmission of the path control message, or discarding the path control message.

主权项

1. A path control method for autonomous routing within a communication network, said path control method comprising:
developing, by a router, a path control message including regional information designating a specific region of transmission to which the path control message is destined via an explicit path, the path control message further including an explicit path length specifying a number of hops to limit transfer of the path control message; instructing, by the router, a node receiving the path control message, among a plurality of nodes within the communication network, to transmit the path control message based on the regional information and to determine a best path, where a reverse direction of the explicit path has priority in determination of the best path; and in response to receiving the path control message, transmitting, by the node, data along best path.