TP-Link T1500G-10MPS T1500G-10MPSUN V1 CLI Reference Guide - Page 182
loopback-detectioninterface, loopback-detection config
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20.4 loopback-detection(interface) Description The loopback-detection command is used to enable the loopback detection function of the specified port/LAG. To disable it, please use no loopback-detection command. Syntax loopback-detection no loopback-detection Command Mode Interface Configuration Mode (interface gigabitEthernet / interface range gigabitEthernet / interface port-channel / interface range port-channel) Privilege Requirement Only Admin, Operator and Power User level users have access to these commands. Example Enable the loopback detection function of ports 1/0/1-3: T1500G-10MPS(config)# interface range gigabitEthernet 1/0/1-3 T1500G-10MPS(Config-if-range)# loopback-detection 20.5 loopback-detection config Description The loopback-detection config command is used to configure the process-mode and recovery-mode for the ports/LAGs by which the switch copes with the detected loops. Syntax loopback-detection config [ process-mode { alert | port-based }] [ recovery-mode { auto | manual }] Parameter process-mode -- The mode how the switch processes the detected loops. Alert: When a loop is detected, display an alert. Port based: When a loop is detected, display an alert and block the port. recovery-mode -- The mode how the blocked port recovers to normal status. Auto: Block status can be automatically removed after recovery time. 169