METHOD AND APPARATUS FOR IMPLEMENTING TRUNK OPTICAL FIBER PROTECTION IN ETHERNET PASSIVE OPTICAL NETWORK (EPON)

摘要

A method and apparatus for implementing trunk optical fiber protection in EPON are provided. In the technical scheme in the invention, turning on the optical module at master PON port, turning off the optical module at standby PON port, configuring the service for the master PON port, and synchronizing the static data and the dynamic data with the standby PON port; synchronizing and adjusting the value of the MPCP counter at the standby PON port based on the value of the MPCP counter at the master PON port; carrying out the fault detection, transmitting the operating state to the standby PON port when the fault occurs, and performing the master-standby switch of the PON ports. In accordance to the invention, it is not necessary for the ONU to re-register in the master-standby switch during the trunk optical fiber protection process in EPON, by means of adjusting the MPCP counter at the standby PON port and setting a dedicated communication channel to realize the fast communication between the master and standby PON ports, as a consequence, the service restoration time for protection switch is remarkably shortened, the system reliability is enhanced, and the switch capability for protection switch is improved.