Node management method and control plane

Abstract

The invention discloses a node management method and a control plane, relates to the technical field of an optical network and can solve the problem the existing optical network can not simultaneously carry out span switch and automatic creation of new protecting paths. The node management method provided by the embodiment of the invention comprises the following steps: creating two-way cross between working paths of two spans connected at a span node after receiving a creation request of the working paths; and modifying the two-way cross to subnet connection protection between the paths of the two spans connected at the span node after receiving the creation request of the protecting paths, wherein the paths of the two spans comprise the working paths and the protecting paths of the two spans. The embodiment of the invention can calculate the new standby protecting paths by the control plane according to the corresponding algorithm, thereby ensuring that the exiting protecting paths can bear services through the standby protecting paths after faults exist in the existing protecting paths, and ensuring the normal operation of the services.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a node management method, a control plane, and an optical network switching management method and system in an optical communication network. Background technique [0002] The Optical Transport Network (OTN, Optical Transport Network) is a brand-new optical transport technology system, including the optical layer and the electrical layer, and has corresponding management and monitoring mechanisms and network survivability mechanisms for each layer of the network. In optical transport network applications, end-to-end services need to pass through a long fiber path with a high failure rate, so the optical transport network needs to have a service protection function. Generally speaking, the ASON (Automatically Switched Optical Network, Automatically Switched Optical Network) technology can be used to dynamically manage the working and protection paths of services. AS...

AI Technical Summary

Problems solved by technology

[0005] However, since the working path and the protection path in ASON create two pairs of two-way crossovers at the intermediate node B, the same service must use the working path or the protection path in the two paths at the same time, and section switching cannot be performed, for example: only If the optical fiber between node A and node B is interrupted, then node A and node B are switched to the protection path, and between node B and node C must also be switched to the protection path, not only between node A and node B sector switching

This may cause the following situation: the working path between node A and node B is interrupted, and the protection path between node B and node C is interrupted. If there are no other resources in the network for the business between node A and node C, node A Service interruption with node C

[0006] In the process of analyzing the existing optical transport network, the inventor found at least the following problems in the prior art: although the above solution can automatically create a new protection path, it cannot perform section switching

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