Instruction manual

Publication date: Feb., 2012
Revision A1
27
 Check the port
configuration.
A port on your Switch may not be operating as you expect
because it has been put into a “blocking” state by
Spanning Tree, GVRP (automatic VLANs), or LACP
(automatic trunking). (Note that the normal operation of
the Spanning Tree, GVRP, and LACP features may put the
port in a blocking state.) Or, the port just may have been
configured as disabled through software.
Table 10: Troubleshooting Chart
Symptom Action
System LED is Off ◆ Check connections between the switch, the power
cord and the wall outlet.
◆ Contact your dealer for assistance.
Link LED is Off ◆ Verify that the switch and attached device are
powered on.
◆ Be sure the cable is plugged into the switch and
corresponding device.
◆ If the switch is installed in a rack, check the
connections to the punch-down block and patch
panel.
◆ Verify that the proper cable types is used and its
length does not exceed specified limits.
◆ Check the adapter on the attached device and cable
connections for possible defects. Replace the
defective adapter or cable if necessary.