Fault processing method and system for Ethernet passive optical network

Abstract

The invention relates to a method and a system for fault processing of an Ethernet passive optical network. An optical line terminal is connected with all passive optical splitters in an optical distribution network through links to establish passive optical splitter backup groups, each passive optical splitter backup group at least comprises two passive optical splitters, and each passive optical splitter is connected with at least one other passive optical splitter in the backup group through a backup link; optical network unit backup groups are established, each optical network unit backup group at least comprises two optical network units, and each optical network unit is connected with at least one other optical network unit in the backup group through a backup link; and a network manager performs fault positioning by detecting fault alarm messages reported by the off-line optical network units, and other passive optical splitters or optical network units in the backup group forward the services of the fault passive optical splitters or optical network units when the faults of the passive optical splitters or the optical network units are detected.

Description

technical field [0001] The invention relates to the field of passive optical network PON, in particular to a method and system for troubleshooting an Ethernet passive optical network EPON. Background technique [0002] Ethernet Passive Optical Network EPON (Ethernet Passive Optical System) is a passive optical network with a point-to-multipoint structure. It has the advantages of easy maintenance, high bandwidth, and low cost. It is currently a widely used optical access technology. The Ethernet passive optical network EPON adopts the passive optical network PON (Passive Optical System) technology on the physical layer, uses the Ethernet protocol on the link layer, and realizes the access of the Ethernet by using the topology of the PON. A variety of services are provided on top of it. EPON combines the advantages of PON technology and Ethernet technology. [0003] figure 1 Shows the typical configuration of Ethernet passive optical network EPON, a typical EPON system co...

AI Technical Summary

Problems solved by technology

[0007] However, for the first detection method, when the OLT cannot detect the upstream light, it is impossible to determine whether it is a fiber failure or an ONU failure; for the second detection method, if no new ONU sends a registration request to the OLT within the discovery window, it is very difficult It is easy to misjudge a normal fiber as a faulty fiber, and at the same time, it is impossible to determine whether it is a fiber failure or an ONU failure; for the third detection method, when multiple ONUs connected to the OLT are physically scattered, each ONU The distance from the OLT is relatively long and the operation is very cumbersome

[0008] In addition, when the network fails, the EPON system immediately handles the fault, but during the fault processing, the application of the user equipment connected to the ONU is easy to time out, which reduces the quality of the user experience of the application

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