以太网告警指示信号的改进及实现

摘要

Ethernet-OAM is an Operation-Administration and Maintenance mechanism for Ethernet, which is mainly go on Ethernet-Continuity Check(ETH_CC), tracking and locating link fault.However, ETH-CC yields redundant link-fault alarms on the premise that a Maintenance Domain nests another.As a result, it is difficult to locate, separate and settle network faults with them.Ethernet-Alarm Indication Signal(ETH-AIS) be able to restrict ETH-CC producing redundant alarm.This paper is based on the ITU-T Y.1731 recommendation to improve ETH-AIS, including restrict redundant alarm information with high-speed, and reduce the amount of link-fault alarms and overcome the difficulty of locating,separating and settling network faults effectively.Finally to enhance the appliance of ETH-OAM and provide the technical support for Ethernet-operation.%以太网OAM是一种保障以太网运行管理维护的机制,主要进行以太网连通性检测 ETH-CC(Ethernet -Continuity Check)和链路问题的跟踪定位.但是ETH-CC存在自身的缺陷,在维护域相互嵌套的情况下会发生链路故障告警的冗余,使得网络故障难于定位、隔离和解决.以太网告警指示信号ETH-AIS(Ethernet-Alarm Indication Signal)具有抑制冗余故障告警的功能.因此本文基于ITU-T Y.1731建议书改进和完善ETH-AIS,实现快速抑制冗余故障告警,快速有效减少故障告警信息,解决网络故障定位、隔离和解决难的问题.增强以太网OAM机制的可应用性,为以太网运营提供技术保障.