Network element equipment and method for protection switching of backbone optical path

Abstract

The invention provides network element equipment and a method for protection switching of a backbone optical path. The method comprises the following steps of: creating a protection group for the network element equipment, wherein the protection group comprises a passive optical network (PON) protection port and a plurality of PON working ports; and when the protection switching is performed, switching switched optical paths of the PON working ports in the protection group to the PON protection port and the optical path corresponding to the PON protection port. By adoption of the technical scheme of the invention, the redundant protection of 1:N can be provided for the optical paths, so that operating cost is saved greatly.

Description

technical field [0001] The invention relates to a protection switching technology of a passive optical network (PON) system, in particular to a network element device and a method for trunk light path protection switching. Background technique [0002] Passive Optical Network (PON) technology is a fiber access technology. It adopts point-to-multipoint network topology and passive optical fiber transmission. The PON system is a broadband access technology that is widely favored and has large-scale applications at present. If the PON system wants to completely replace the original access equipment, it needs to provide more reliable services and higher economic efficiency. [0003] At present, there are mainly four protection switching methods in the PON system to ensure its reliability: [0004] Type A protection, trunk fiber protection, such as Figure 1a As shown, the protection of the backbone optical fiber can be independently completed by OLT (optical line terminal, op...

AI Technical Summary

Problems solved by technology

[0008] All the above protection methods are 1:1 redundant protection, that is, one protection PON port corresponds to o

Images