METHOD, PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL FOR ENABLING DISTRIBUTED PROTECTION

摘要

A method for implementing distributed protection comprises: if a line card of an optical line terminal detects damage of a main interface or interrupt of services carried on the main interface, performing protection switching to switch communication services carried on the main interface to a standby interface. A passive optical network system for implementing distributed protection comprises an optical line terminal comprising one or more line cards, wherein the line card of optical line terminal is configured to perform protection switching when detecting damage of a main interface or interrupt of services carried on the main interface so as to switch communication services carried on the main interface to a standby interface. The present invention further provides an optical line terminal for implementing distributed protection. Using the present invention, the single point invalidation problem caused by using only the main switching board for implementing the protection switching in the centralized protection can be avoided, and the PON protection switching service recovery time is decreased.