Extreme Networks EAS 200-24p Switch, Manual

Page: 248 / 908

Chapter 13: Cable Diagnostics Command List
Extreme Networks EAS 200-24p Switch CLI Manual
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cable_diag ports
Description
For FE port, two pairs of cable will be diagnosed. For GE port, four pairs of cable will be diagnosed.
The type of cable error can be open, short, or crosstalk.
Open means that the cable in the error pair does not have a connection at the specified position.
Short means that the cables in the error pair has a short problem at the specified position,
Crosstalk means that the cable in the error pair has a crosstalk problem at the specified position.
When a port is in link-up status, the test will obtain the distance of the cable. Since the status is link-up,
the cable will not have the short or open problem. But the test may still detect the crosstalk problem.
When a port is in link-down status, the link-down may be caused by many factors.
1 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 is powered on.
2 When the port does not have any cable connection, the result of the test will indicate no cable.
3 The test will detect the type of error and the position where the error occurs.
Note that this test will consume a low number of packets. Since this test is for copper cable, the port
with fiber cable will be skipped from the test. For combo port, the test will always be applied to the
copper media only.
Format
cable_diag ports [<portlist> | all]
Parameters
●
<portlist> - Enter a list of ports used for the configuration here.
●
all – Specifies that all the ports will be used for this configuration.
Restrictions
Only Administrator, Operator and Power-User level users can issue this command.