D-Link DES-1228/ME, Руководство пользователя

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DES-1228/ME Layer 2 Fast Ethernet Managed Switch
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Cable Diagnostics
The following window is used to test the cables connecting to the Switch. This feature is used to determine if there are any errors
on the copper cables and the position where the errors may have occurred. Use the pull down menu to enter the port or range of
ports to be tested and click the
Test Now button which will display the the results in the Cable Diagnostics Information table
below. To view this window click, Administration > Cable Diagnostics .
Figure 6- 12. Cable Diagnostic Table window
The following parameters may be configured or viewed.
Parameter Description
Port Specifies a port or range of ports to be tested.
Type FE ports have two pairs of cable will be diagnosed.
GE ports have four pairs of cable that will be diagnosed.
Link Status
Link Up
−
When a port is in link-up status the test will be able to determine the distance of
the cable as well as any problems it may have. Due to the fact the port is in link-up status it
will not have any
Short or Open problems, but the test may still detect if there is a Crosstalk
problem.
Link Down
−
When a particular port is in link-down status, the link-down may be caused by
many factors;
When the port has a normal cable connection, but the remote partner is powered off,
the cable diagnosis can still diagnose the health of the cable as if the remote partner was
powered on.
When the port does not have any cable connection, the result of the test will indicate
no cable.
The test will detect the type of error and the position where the error has occurred.