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CLI-based Configuration Guide - Reliability

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides guidance for configuring reliability services, including interface backup, BFD, VRRP, and EFM.
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Overview of Y.1731

Overview of Y.1731

Definition

Y.1731 is an OAM protocol defined by the Telecommunication Standardization Sector of the International Telecommunication Union (ITU-T). It covers items defined in IEEE 802.1ag and provides additional OAM messages. It includes frame loss measurement (LM) and delay measurement (DM) for performance monitoring.

Purpose

Hierarchical Ethernet operation, administration and maintenance (OAM) needs to be provided based on the network architecture, as shown in Figure 10-1.

Figure 10-1  Ethernet OAM networking

Figure 10-1 shows typical Ethernet OAM networking. Y.1731 performance monitoring tools can be used to assess the quality of the purchased Ethernet tunnel services or help a carrier conduct regular service level agreement (SLA) monitoring.

Y.1731 is an OAM protocol defined by the ITU-T. It covers items defined in IEEE 802.1ag and provides additional OAM messages. It includes frame loss measurement (LM) and delay measurement (DM) for performance monitoring.

Originally, Ethernet was mainly used on 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 on MANs, the requirement on OAM becomes increasingly high.

Y.1731 provides test diagnosis and performance monitoring functions such as frame loss measurement, frame delay measurement, frame jitter measurement, and throughput measurement, on the Ethernet.

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Updated: 2019-03-06

Document ID: EDOC1100069338

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