电信科学 ›› 2012, Vol. 28 ›› Issue (10): 128-132.doi: 10.3969/j.issn.1000-0801.2012.10.021

• 上海电信“城市光网”建设 • 上一篇    下一篇

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

蒋铭1,郑洁2,杨炜洁2   

  1. 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
  • 出版日期:2012-10-15 发布日期:2017-07-05

A New Loopback Detection Mechanism for Metro Optical Network

Ming Jiang1,Jie Zheng2,Weijie Yang2   

  1. 1 Shanghai Research Insitute of China Telecom Co., Ltd., Shanghai 200122, China
    2 Shanghai Branch of China Telecom Co., Ltd., Shanghai 200120, China
  • Online:2012-10-15 Published:2017-07-05

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。

关键词: 城市光网, 无源光网络, 环路检测机制, OLT, ONU

Abstract:

Loopback is a critical failure in PON, especially in mass deployment of PON network. This article describes thetypical phenomenon in real network and provides the typical loopback failure model. Then the principle of loopback detectionand the disadvantages of current solution are analyzed. Finally, based on the hands-on experience in network management, wepropose a new loopback detection mechanism and the related procedure which are widely used in metro optical network ofShanghai Telecom.

Key words: metro optical network, PON, loopback detection mechanism, OLT, ONU

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