Method for obtaining intelligent light network restraining route

Abstract

This invention discloses a method for obtaining intelligent optical network restriction routes including: a route control module gets a request of enquiring connection route connecting the control module to merge links to the topology of links in the route database if said request asks for enquiring multiple connection routes at the same time, which are independent of nodes or links among the routes then the weight values of the links on the simplified topology are assumed to be equal, then the shortest path is selected, the simplified topology is processed independent of nodes or links according to the selected route then to select a shortest route again on said topology in terms of the condition of equal weight value and repeats it many times till enough routes are selected or no more routes can be selected, finally, the route control module feeds back several routes with the smallest weight value in the selected ones to the connection control module.

Description

technical field [0001] The invention relates to a method for obtaining constrained routing in an intelligent optical network (ASON Automatically Switched Optical Network), in particular to the establishment of a dynamic connection route in an optical network. Background technique [0002] In recent years, communication services such as voice, data, and video have further developed toward integration, and the total amount of Internet services is growing explosively at a rate of doubling every year, becoming the main force swallowing up the bandwidth of the backbone network. According to statistics, the annual growth rate of voice traffic in the world is only 10%, while the annual growth rate of data business reaches 40%. In my country, the annual growth rate of data business exceeds 400%, which is a very rapid development. The continuous growth of business volume, coupled with the characteristics of burstiness, self-similarity and imbalance of Internet business itself, means ...

AI Technical Summary

Problems solved by technology

Most of the services in the actual networking are protected services. In order to avoid node or link failures affecting both the working connection and the protection connection, usually the working connection and the protection connection must meet the node-independent or link-independent requirements. According to the current CSPF processing method, First select an SPF route, and then select other connection routes according to the node or link irrelevant, which will cause the route that meets the requirements cannot be found in some cases, that is, "missed detection" may occur, resulting in a low success rate of route selection, and In fact, there is a route that meets the requirements

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