Patent ID: 7571310
Filing Date: 2009-08-04
Classification: H04L

Abstract:
1. A security module detection method for link protection between two network devices in an Ethernet Passive Optical Network (EPON), the method comprising the steps of: a) generating, by a first device, a first information frame containing local configuration information indicating configuration information of the first device and local state information indicating setting state of the first device; b) receiving, by the first device, an information frame from a second device that is a counterpart to the first device; c) checking, by the first device, local state information and remote state information of the received information frame to determine setting states of the first and second devices, the first device corresponding to a local device and the second device corresponding to a remote device; d) comparing, by the first device, local configuration information of the received information frame with configuration information of the first device if it is determined at said step c) that at least one of the local state information and the remote state information has not been set; e) generating by the first device, a second information frame including local state information indicating a result of the comparison, remote configuration information indicating the local configuration information of the received frame, and local configuration information indicating the configuration information of the first device, and then returning to said step b); and f) terminating a security module detection procedure if it is determined at said step c) that both the local state information and the remote state information of the received information frame have been set.