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CLI-based Configuration Guide - Reliability

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides guidance for configuring reliability services, including interface backup, BFD, VRRP, and EFM.
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Overview of Interface Monitoring Groups

Overview of Interface Monitoring Groups


All monitored network-side interfaces can be added to a group. This group is called an interface monitoring group, and the monitored interfaces are called binding interfaces. The access-side interfaces associated with the interface monitoring group are called track interfaces. The status of the track interfaces is associated with the status of the interface monitoring group. An interface monitoring group monitors the status of the binding interfaces. If the number of binding interfaces that go Down reaches a certain value, the status of corresponding track interfaces becomes Down, and services are switched to the backup link. When the number of binding interfaces in the Down state is smaller than a certain value, the status of corresponding track interfaces becomes Up again, and the services are switched back to the master link.


In HSB scenarios, when the network-side link is faulty, the interface monitoring group monitors the network-side interface status. When the status of network-side interfaces of a certain number changes, the access-side interface status changes. In this case, an active/standby switchover is performed on the access-side link. User access is controlled, traffic overload is prevented, and smooth service transmission is ensured.

Updated: 2019-08-12

Document ID: EDOC1100034076

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