TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 CLI Reference Guide - Page 195
loopback-detection config
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T2500-28TC JetStream L2 Managed Switch CLI Guide Example Enable the loopback detection function of Gigabit Ethernet ports 25-27: T2500-28TC(config)#interface range gigabitEthernet 1/0/25-27 T2500-28TC(config-if-range)#loopback-detection loopback-detection config Description The loopback-detection config command is used to configure the process-mode and recovery-mode for the ports 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. manual: block status can only be removed manually. Command Mode Interface Configuration Mode (interface fastEthernet / interface range fastEthernet / interface gigabitEthernet / interface range gigabitEthernet) Example Configure the loopback detection process-mode as port-based and recovery-mode as manual for Gigabit Ethernet port 25: T2500-28TC(config)#interface gigabitEthernet 1/0/25 T2500-28TC(config-if)#loopback-detection config process-mode port-based recovery-mode manual 178