公开(公告)号：US10397091B1

公开(公告)日：2019-08-27

申请号：US16132993

申请日：2018-09-17

Applicant: Cisco Technology, Inc.

Inventor： Luca Gumier ,  Stefano Piciaccia ,  Mauro Brunella

IPC: H04L12/751 ,  H04J14/02 ,  H04B10/079 ,  H04Q11/00 ,  H04B10/077

Abstract: At a first optical node of an optical communications system, during a signal initialization phase, a first optical pattern is received that includes a prefix indicating a beginning of a signal, a first word, and a first working signal for verifying stability of a connection between the first optical node and a second optical node of the optical communications system. A second optical pattern is transmitted that includes the prefix, a second word different from the first word, and the first working signal. A third optical pattern including the prefix, the first word, and a second working signal is received. Based on determining that a duration of the second working signal is greater than a duration of the first working signal plus a predetermined time, the first optical node determines that the second optical node is an adjacent node of the first optical node.