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Chapter 23 Loopback Detection Commands

With loopback detection feature enabled, the switch can detect loops using loopback detection

packets. When a loop is detected, the switch will display an alert or further block the corresponding

port according to the configuration.

loopback-detection(global)

Description

The loopback-detection command is used to enable the loopback detection

function globally. To disable it, please use no loopback detection command.

Syntax

loopback-detection

no loopback-detection

Command Mode

Global Configuration Mode

Example

Enable the loopback detection function globally:

TL-SG3424(config)# loopback-detection

loopback-detection interval

Description

The loopback-detection interval command is used to define the interval of

sending loopback detection packets from switch ports to network, aiming at

detecting network loops periodically.

Syntax

loopback-detection interval interval-time

Parameter

interval-time —— The interval of sending loopback detection packets. It ranges

from 1 to 1000 seconds. By default, this value is 30.

Command Mode

Global Configuration Mode

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