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TL-SL3428_V3_User_Guide - TP-Link

TL-SL3428_V3_User_Guide - TP-Link

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Pair:Status:Length:Error:Displays the Pair number.Displays the connection status of the cable connected to the port. Thetest results of the cable include normal, close, open, short, impedanceor unknown.If the connection status is normal, here displays the length range ofthe cable.If the connection status is close, open or impedance, here displays theerror length of the cable.Note:1. The Length displayed here is the length of pair cable not that of the physical cable.2. The test result is just for your reference.14.3.2 LoopbackLoopback test function, looping the sender and the receiver of the signal, is used to test whetherthe port of the switch is available as well as to check and analyze the physical connection status ofthe port to help you locate and solve network malfunctions.Choose the menu Maintenance→Device Diagnose→Loopback to load the following page.Figure 14-8 LoopbackThe following entries are displayed on this screen:‣ Loopback TypeInternal:External:Select Internal to test whether the port is available.Select External to test whether the device connected to the portof the switch is available‣ Loopback Port204

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