Information transmission method, optical cross site and information transmission system

Abstract

The embodiment of the present invention provides an information transmission method, an optical cross station and an information transmission system. The method includes: the optical cross station obtains management information; the optical cross station determines the service flow corresponding to the management information; when the service flow needs to be processed by the optical cross, the optical cross station determines the The management information logical channel of the management information, and the management information is sent through the management information logical channel, wherein the direction of the management information logical channel to transmit information is consistent with the service flow of the service flow. The information transmission method, optical crossover site and information transmission system of the embodiments of the present invention can avoid manual configuration of channel paths and avoid information flooding between sites.

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 site or some sites on the path where the service is located. For example, when performing end-to-end optical power control, it is necessary to , Optical Signal-to-Noise Ratio (OSNR for short) and other information are sent to each station 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 ne...

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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