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Length: If the connection status is normal, here displays the length range o
f
the cable.
Error: If the connection status is close, open or impedance, here displays the
error length of the cable.
Note:
1. The interval between two cable tests for one port must be more than 3 seconds.
2. The result is more reasonable when the cable pair is in the open status.
3. The test result is just for your reference.
12.3.2 Loopback
Loopback test function, looping the sender and the receiver of the signal, is used to test whether
the port of the switch is available as well as to check and analyze the physical connection status of
the port to help you locate and solve network malfunctions.
Choose the menu Maintenance→Device Diagnostics→Loopback to load the following page.
Figure 12-8 Loopback
The following entries are displayed on this screen:
¾ Loopback Type
Internal: Select Internal to test whether the port is available.
External: Select External to test whether the device connected to the port
of the switch is available
¾ Loopback Port
Loopback Port: Select the desired port for loopback test.
Test: Click the Test button to start the loopback test for the port.
12.4 Network Diagnostics
This switch provides Ping test and Tracert test functions for network diagnostics.