D-Link DES-3852 Product Manual - Page 428

xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch CLI Manual 61 LOOPBACK DETECTION COMMANDS The Loopback Detection commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the following table. Command Parameters config loopdetect {recover_timer [ 0 | ] | interval | mode [port-based | vlan-based]] (1) config loopdetect ports [| all] state [enable | disable ] enable loopdetect disable loopdetect show loopdetect show loopdetect ports [ all | ] Each command is listed, in detail, in the following sections. config loopdetect Purpose Syntax Description Parameters Restrictions Used to configure loop-back detection function on the switch. config loopdetect {recover_timer [ 0 | ] | interval | mode [port-based | vlan-based]} (1) The config loopdetect command is used to setup the loop-back detection function (LBD) for the entire switch. recover_timer - The time interval (in seconds) used by the AutoRecovery mechanism to decide how long to check if the loop status is gone. The valid range is 60 to 1000000 . Zero is a special value which means to disable the auto-recovery mechanism, hence, user need to recover the disabled port back manually. Default value of recover_timer is 60. interval - The time interval (in seconds) at which device transmits all the CTP(Configuration Test Protocol) packets to detect the loopback event. The default setting is 10. Valid range is 1 to 32767. mode - Choose the loop-detection operation mode. In the portbased mode , the port will be shut-down (disabled) when detecting loop ; in vlan-based mode , the port can't process packets of the VLAN that detecting the loop. Only Administrator or Operator-level users can issue this command. 424