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8.4 Y.1731 Configuration
Y.1731 is an OAM protocol at the network layer. It provides fault detection defined in IEEE
802.1ag and performance monitoring, such as frame loss measurement, frame delay
measurement, and Alarm Indication Signal (AIS).
8.4.1 Y.1731 Overview
Y.1731 is used to implement performance monitoring and fault management for end-to-end links
on Ethernet networks.
Y.1731 Introduction
Y.1731 is an Operation, Administration and Maintenance (OAM) protocol defined by the ITU-
T. It is used to implement end-to-end connectivity detection, loopback detection, and link trace
on Metro Ethernets (MEs). It also provides the test diagnosis and performance monitoring
functions such as frame loss measurement, frame delay measurement, frame jitter measurement,
and throughput measurement.
Background
Originally, Ethernet was mainly used in Local Area Networks (LANs), and had a poor OAM
capability. In addition, Ethernet supports only the network element-level management system
that cannot meet network management requirements of most network operators. After Ethernet
is widely used in MANs, the requirement on OAM becomes increasingly high.
Hierarchical Ethernet OAM needs to be provided based on the network architecture, as shown
in
.
Figure 8-39
Networking diagram for Ethernet OAM
Services
Access
Metro
Core
CE
PE1
P
PE2
PE3
EFM
EFM
CFM/Y.1731
CFM/Y.1731
Access
Link OAM
Connectivity
Layer OAM
Service
Layer OAM
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
8 Ethernet OAM Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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