Method and device for optimizing loss monitoring
A first-time, network element technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as large, inversion, and no counting, to eliminate inversion, reduce time errors, and optimize loss. Monitoring the effect of the method
Inactive Publication Date: 2016-07-27
ZTE CORP
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After B has just enabled DLM, it will perform DLM counting on the first CCM message sent by A, and B has already started counting, that is, the value of RxFC1(B) is not 0, but TxFC1(A) is 0, because A has not yet enabled DLM and there is no counting. Since the sending interval is 100ms, the TxFC2(A) field of the second CCM message received is still 0, and RxFC2(B) also has a value. At this time, the calculation of the remote end is satisfied. The condition of frame loss, after substituting into the formula |TxFC2(A)–TxFC1(A)| is 0, |RxFC2(B)–RxFC1(B)|>0, the value of the former minus the latter is negative, if unsigned count , will cause a large difference, forming an inversion phenomenon
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[0069] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0070] The present invention aims at the time difference caused by manual configuration when two devices are started differently in the prior art, causing the device on one side to start detection first, and the device on the other side to start detection later. Then the starting device does not count, and during this time difference, the problem of count reversal will occur.
[0071] The present invention provides a method and device for optimizing loss monitoring. By first giving network elements a time to synchronize, and then negotiating a unified delivery configuration time point, and then sending and displaying DLM data, this can be achieved. Synchronization between different devices also avoids reversal phenomenon and optimizes loss monitoring.
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The present invention provides a method and device for optimizing loss monitoring. The method is applied to the operation of an Ethernet and the management and maintenance of an OAM solid network element. The method comprises the steps that a first network element obtains the first time points of multiple network elements, and time synchronization is carried out according to the first time points; after the time synchronization, the first network element receives a start command of starting a double-end loss measurement (DLM) function of the first network element and the network element which interacts with the first network element; according to the start command, the first network element and the network element which interacts with the first network element carry out consultation of a second time point of issuing DLM data among network elements by using a preset protocol with a time point; after the consultation is successful, the first network element issuing DLM data according to the second time point to carry out detection and displaying. In this way, the equipment synchronization can be completed, the inversion problem of DLM initial counting caused by a time difference can be effectively eliminated, thus the calculation of frame loss is more accurate, and the method of loss monitoring is optimized.
Description
technical field [0001] The invention relates to the field of OAM (Operation, administration and maintenance, operation, management and maintenance) of an Ethernet network, in particular to a method and device for optimizing loss monitoring. Background technique [0002] LM (lossmeasurement, loss measurement) is one of the performance detection methods in ETH (Ethernet, Ethernet MAC layer network) OAM, and its main function is to test the frame loss rate. Its basic definition is: the ratio of the number of undelivered service frames expressed as a percentage divided by the total number of service frames in the time interval T. The number of undelivered service frames here refers to the difference between the number of service frames arriving at the ingress ETH flow node and the number of service frames delivered to the egress ETH flow node in a point-to-point ETH connection. ETH-LM can be performed in two ways: DLM (Doubleendlossmeasurement, double-ended loss measurement) do...
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Login to View More IPC IPC(8): H04L12/24H04L12/26
Inventor 张卯安李爱民陈园园
Owner ZTE CORP