Method for realizing inter-disc STM-1 interface automatic protection switching in gigabit-capable passive optical network (GPON) system

Abstract

The invention relates to a method for realizing inter-disc STM-1 interface automatic protection switching in a gigabit-capable passive optical network (GPON) system. The method comprises the following steps that: 1, an inter-disc optical line automatic protection switching function is initiated, and two STM-1 interface discs are appointed as master and backup discs respectively; 2, E1 service links are set up in the two STM-1 interface discs, wherein only the master disc carries corresponding E1 services; 3, the master and backup discs directly send Ethernet double-layered packets to each other to intercommunicate about respective states; 4, when the master disc fails, a switching operation instruction is sent in the form of the Ethernet double-layered packets to the backup disc, and the backup disc is switched into the master disc to carry the corresponding E1 services; and 5, the master and backup discs report the changed states to a network manager. According to the method of the invention, the master and backup states of the STM-1 interface discs are switched by directly sending the double-layered packets, so that the operation efficiency of the system is improved, the time delay in switching is reduced, furthermore, the high real-time requirement on time division multiplex (TDM) services is met, and the reliability of equipment and the degree of satisfaction of telecommunication operators and users are improved.

Description

technical field [0001] The invention relates to a service protection switching technology in a GPON system in the communication field, in particular to a method for realizing automatic protection switching of an STM-1 interface between disks in a GPON system. The inter-disk STM-1 interface in the GPON system is used to transmit E1 services. Background technique [0002] GPON (Gigabit-Capable Passive Optical Networks) technology is a new generation of broadband access technology. The GPON system is composed of optical line terminal OLT (optical line terminal) through optical distribution network ODN (Optical Distribution Network) to connect multiple optical network units ONU ( Optical Networks Unit). The GPON system can not only provide high-speed Ethernet data services, voice, IPTV (Internet Protocol Television, Internet TV) services, but also provide traditional E1 services, so as to be able to integrate with the old narrowband access network. [0003] The E1 service is g...

AI Technical Summary

Problems solved by technology

The switching operation is performed only under the intervention of the main control panel, which not only increases the switching time but also increases the possibility of wrong operation

[0006] Second. Although the standby disk in this invention accepts the E1 service configuration, it does not create the E1 service link. The E1 service link is created only after the switchover operation becomes the master disk, which will also lead to an increase in the switchover time.

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