Route selecting device and route selecting method of multi-service restoration

Abstract

The invention discloses route selecting device and method of multi-service restoration. The device comprises a route computing unit and a service route merging unit, wherein the route computing unit transmits a received uniform route computation notification message including multi-service failure connection information to the service route merging unit and transmits a route query request sent bya first node of a failure service to the service route merging unit; the service route merging unit sorts the service failure connection information according to the service merging and route query statistic algorithm and uniformly obtains and records restoration route information from the route computing unit; and when receiving the route query request transmitted by the route computing unit, theservice route merging unit is used for searching the record according to the route query request and returning the searched corresponding restoration route information to the first node required to restored through the route computing unit. By adopting the merging and uniform route query method, the invention reduces the resource consumption of the route computing unit and improves the link failure restoration efficiency.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a routing device and a routing method for multi-service recovery. Background technique [0002] ASON (Automatic switched optical network) refers to a new generation of optical network that completes the automatic switching function under the control of routing and signaling. It has been a research hotspot in the field of optical network in recent years. The introduction of ASON technology can enhance the rapid configuration capability of network services, improve service survivability, effectively resist network multi-point failures, and flexibly provide different service levels to meet the needs of the rapidly developing differentiated services. [0003] The PCE (Path Computation Element, Path Computation Element) in ASON makes the path computation function independent from the network equipment, that is, by deploying an independent Path Computation Element in the network...

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a multi-service recovery routing device and routing method to solve the problem in the prior art that the path calculation unit is too busy to respond to the request in time and cause delays in service recovery

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