Optical network service restoration method and system based on resource convergence graph

Abstract

The invention discloses an optical network service restoration method and system based on a resource convergence graph. The method includes the steps that failure nodes in an optical network are regularly detected, and the failure nodes are distinguished as intermediate nodes or convergence nodes; if the failure nodes are the convergence nodes, the convergence nodes are reselected, and synergetic first topological information of the optical network and a packet-based network is acquired; weight values of multiple paths are calculated through weight values of multiple network links in the first topological information, and the path with the minimal weight value is selected as the finally-selected path. According to the method, in order to solve the problem that service restoration is difficult after failure occurs in the packet-based network borne by the optical network, the path with the minimal weight value from a source node to a host node calculated through the resource convergence graph is used for service restoration, network services can be quickly restored after network nodes fail, overall cost is reduced, and the utilization rate of network resources is increased.

Description

technical field [0001] The invention relates to the field of network optimization, in particular to a method and system for restoring optical network services based on a resource aggregation graph. Background technique [0002] Due to the rapid development of large-bandwidth services such as video-on-demand and cloud computing, data center services have attracted the attention of service providers and network operators. In order to provide data center services, the flexible optical network bearer packet network has become one of the important technologies for data center interconnection. This network can offload IP traffic to the flexible optical network at a more flexible granularity by bypassing routers with high energy consumption. At the same time, a large number of delay-sensitive data center services require high-level end-to-end service quality assurance. If a node failure occurs in the data center interconnection based on the flexible optical network bearer packet ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects in the prior art, the present invention provides an optical network service recovery method and system based on a resource aggregation graph, which solves the problem of difficult service recovery after a failure occurs in the optical network bearer packet network

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