Method and device for dynamically adjusting SRLG

Abstract

The present invention discloses a method and device for dynamically adjusting a shared risk link group (SRLG). The method comprises the steps that a monitoring unit judges that a network node is failed, analyzes the failure reason of the network node, and reports the analyzed failure reason to an analysis unit; the analysis unit calculates the failure rate corresponding to the failure reason of the network node in each preset period of a first preset time according to the reported failure reason; and when the analysis unit judges that the obtained failure rate is larger than or equal to a fourth preset threshold and judges that the analysis does not store the information of the SRLG corresponding to the failure reason, the analysis generates the information of the SRLG corresponding to the failure reason, stores the failure reason and the generated corresponding relation between the generated information of the SRLG, and sends the generated information of the SRLG to a calculation unit. According to the method and the device, the probability of sharing a failure risk by a working path and a protection path is reduced.

Description

technical field [0001] The invention relates to transmission network technology, in particular to a method and device for dynamically adjusting a Shared Risk Link Group (SRLG, SharedRiskLinkGroup). Background technique [0002] figure 1 It is a schematic diagram of the existing working path and protection path network scenarios, such as figure 1 As shown, in the existing transmission network, it is often necessary to complete the constraint path calculation of path diversity. When there is a risk of failure, in order to reduce the probability of simultaneous failure of the working path and the protection path, it is necessary to separate the working path and the protection path of the service from the SRLG when calculating the working path and the protection path, so as not to share the failure risk, thereby effectively improving network security. survivability. [0003] Existing methods for obtaining SRLG generally include: artificially predicting the SRLG corresponding ...

AI Technical Summary

Problems solved by technology

[0004] In the existing method for obtaining SRLG, because there are many risk factors in the network, some risk factors exist stably for a long time, and some risk factors are sudden and only exist in a period of time (for example: sudden floods, earthquakes, etc.) , Explosions lead to unstable power supply, high equipment temperature, cable breakage, etc.)

For risk factors that exist stably for a long time, existing methods can be used to separate SRLG well; for sudden risk factors, since the risk factors only exist for a period of time, if no SRLG separation is performed on them, sudden When a fault occurs, the working path and the protection path have a greater probability of sharing the risk of failure

However, no effective method is given in the prior art to dynamically adjust the SRLG

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