T2700G-28TQ
JetStream 28-Port Gigabit Stackable L2+ Managed Switch CLI Guide
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Chapter 27 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:
T2700G-28TQ(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 seconds.