面向城市光网的新型环路检测机制——上海“城市光网”技术创新和应用实践之八  

A New Loopback Detection Mechanism for Metro Optical Network

作　　者：蒋铭[1] 郑洁[2] 杨炜洁[2] 

机构地区：[1]中国电信股份有限公司上海研究院,上海200122 [2]中国电信股份有限公司上海分公司,上海200120

出　　处：《电信科学》2012年第10期128-132,共5页Telecommunications Science

摘　　要：城市光网网络规模运营后,用户环路成为网络运营中凸显的故障。本文主要介绍了现网中发现的环路故障,提出了典型的环路类型,分析了环路检测的原理以及现有技术方案的缺陷,并且结合实际网络运维经验,创新性地提出了适用于城市光网的环路检测机制和流程。Loopback is a critical failure in PON, especially in mass deployment of PON network. This article descrihes the typical phenomenon in real network and provides the typical loopback failure model, Then the principle of loopback detection and the disadvantages of current solution are analyzed. Finally, based on the hands-on experience in network management, we propose a new loopback detection mechanism and the related procedure which are widely used in metro optical network of Shanghai Telecom.

关 键 词：城市光网 无源光网络 环路检测机制 OLT ONU 

分 类 号：TN915.1[电子电信—通信与信息系统]