Method and device for fault handing of optical channel bandwidth

Abstract

The invention discloses a method and a device for fault handing of an optical channel bandwidth and belongs to the field of photo-communication. The method for fault handing of the optical channel bandwidth comprises that whether high order time slot adjustment is completed in a link which is out of order in an optical channel data optical data unit (ODU) flex path is judged, when a condition that the high order time slot adjustment is completed in the link is taken as a judge result, in the ODU flex path, all the bandwidths of the links are triggered to be adjusted to a state after all the links are adjusted on condition that the links are not out of order, and the flex means a random bit rate. Adaptive handing ability for faults by the ODU flex lossless adjustment is expanded, the phenomenon that bandwidths of all the sections are disaccorded with states before the adjustment or after the adjustment in the ODU flex path when a fault is caused is eliminated, the effect that when the fault is caused, the ODU flex path can still normally be adjusted to finish or recover the state before the adjustment is ensured, and the adapting ability is strong.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a fault processing method and device for optical channel bandwidth. Background technique [0002] OTN (Optical transport network, optical transport network), as the core technology of the next-generation transport network, includes the technical specifications of the electrical layer and the optical layer, and has rich OAM (Operation Administration and Maintenance, network management), powerful TCM (Tandem Connection Monitoring, Serial connection monitoring) capability and out-of-band FEC (Forward Error Correction) capability, which can realize flexible scheduling and management of large-capacity services, have increasingly become the mainstream technology of the backbone transport network. In the electrical processing layer, the powerful "digital encapsulation" structure defined by OTN technology can realize the management and monitoring of customer signals. [0003] For OT...

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Problems solved by technology

[0014] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: the prior art only realizes the lossless adjustment of the ODUflex channel bandwidth in a non-failure scenario, but a link failure occurs during the ODUflex bandwidth adjustment process In the case of , the existing technology will be abnormally interrupted, resulting in inconsistent bandwidth status of each segment in the ODUflex path

Phenomenon 1: Some LCs have completed the TS adjustment and some LCs have not completed the TS adjustment coexistence phenomenon, resulting in an inconsistent state with the bandwidth allocation before the adjustment; Phenomenon 2: If the fault triggers the path protection switching, the ODUflex path changes, and the introduction of a new LC, resulting in the adjustment Inconsistent state of previous bandwidth allocation

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