A method for improving the stability of onu optical link protection switching
A technology of protection switching and stability, applied in the field of Ethernet passive optical network, which can solve the problems of inconsistent activation status and registration status of PON ports
Active Publication Date: 2018-08-07
WUHAN YANGTZE OPTICAL TECH
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[0003] The technical problem to be solved by the present invention is to provide a method for detecting and recovering the inconsistency between the activation state and the registration state of the existing PON port to improve the stability of ONU optical link protection switching
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] Such as figure 1 Shown, the flow chart of the method for promoting ONU optical link protection switching stability described in the present invention, this method comprises:
[0023] Step S1: start the timer, regularly query the activation state (ACTIVE state) and registration state (REG state) of the two PON ports of the ONU;
[0024] Step S2: Determine whether the activation state of the PON port is consistent with the registration state:
[0025] If consistent, return to step S1;
[0026] If inconsistent, perform step S3: start the counter to count, and check whether the inconsistency ...
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The invention discloses a method for improving the stability of ONU optical link protection switching, which is characterized in that the method includes: step S1: regularly query the activation state and registration state of two PON ports of the ONU; step S2: judge whether there is a Inconsistency between the activation status and registration status of two PON ports: if they are consistent, return to step S1; if they are inconsistent, perform step S3: start the counter to count, check whether the inconsistency disappears before the counter times out: if the inconsistency disappears before the counter times out, Execute step S4: clear the counter, and repeat steps S1-S3; if the inconsistency does not disappear before the counter times out, execute step S5: reset the ONU state. The method of the present invention resets the ONU state when the inconsistency between the activation state and the registration state cannot disappear within a specified period of time, so as to avoid the continuation of the ONU optical link switching abnormality caused by the inconsistency of the ONU.
Description
technical field [0001] The invention relates to the field of Ethernet passive optical network (EPON), in particular to a method for improving the stability of ONU optical link protection switching. Background technique [0002] EPON (Ethernet Passive Optical Network) system is composed of three parts: OLT (Optical Line Terminal), ODN (Optical Distribution Network) and ONU (Optical Network Unit). In order to improve the reliability of EPON services, ONU can support optical link protection switching function. The optical link protection switching process of the ONU is triggered by the PON LOS state. The PON LOS signal is transmitted to the PON chip by the optical module. After the PON chip receives the LOS signal, it triggers the switching and changes the state to INACTIVE, and the PON registration is completed through MPCP. , so that the activation state of the PON may be INACTIVE but the registration state is REG. In order to avoid this problem, the ONU needs to regularly ...
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IPC IPC(8): H04Q11/00
Inventor 朱梅卢方增张宇杜军
Owner WUHAN YANGTZE OPTICAL TECH