Information transmission method, optical crossover site and information transmission system

Abstract

The embodiment of the invention provides an information transmission method, an optical crossover site and an information transmission system. The method includes: the optical crossover site acquiring management information and then determining a service flow corresponding to the management information; and when the service flow needs to be put into an optical crossover processing, the optical crossover site determining a management information logical channel used for sending of the management information according to the direction of the service flow, and then the management information being sent through the management information logical channel, wherein the direction in which the management information logical channel transmits the information is identical with the direction of the service flow. The information transmission method, the optical crossover site and the information transmission system enable manual configuration of channel paths and inter-site information flood to be prevented.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to an information transmission method, an optical cross-site and an information transmission system. Background technique [0002] In a wavelength division multiplexing (WDM for short) system, there is a need to send management information to each station or some stations on the service path. For example, when performing end-to-end optical power control, it is necessary to send Fiber power, Optical Signal Noise Ratio (OSNR for short) and other information are sent to each site on the path where the service is located. [0003] In the prior art, it is possible to manually specify the source, destination, and intermediate site information of the route, as well as the communication channel or time slot in the channel occupied by it to send management information; however, the workload of configuration is heavy and error-prone. When a change occurs, it is also necessa...

AI Technical Summary

Problems solved by technology

However, after the service is interrupted or adjusted, it is necessary to update the network information by flooding again and generate new routing information. Therefore, there is a delay, and the cost of flooding is high, which limits the scale of the network that can be operated.

If the network scale is large, the flooding information traffic after the network change is very large, so that normal management information cannot be transmitted quickly, affecting network functions

If the bandwidth of the normal management information transmission channel is guaranteed by limiting the flooding bandwidth, after the network changes, the flooding time for identifying network status changes will be significantly longer, which will also reduce network availability

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