130 CHAPTER 9: PROBLEM SOLVING
Interpreting LEDs Table 35 describes the LEDs on the Switch.
CAUTION: The absence of lit LEDs does not necessarily mean that the
device is not powered up.
Identifying the
Problem
This section describes how to identify problems, and suggests possible
solutions.
Table 35 Switch Module Status LEDs
LED Name Color/State Indicates
Packet Yellow Packets are being routed.
Off No packets are being routed.
Status Yellow The Layer 3 Module is functioning.
Yellow
flashing
An unrecognized or faulty module is installed in
the Switch.
Off There is no module installed in the Switch.
Table 36 Identifying Problems with the Layer 3 Module
Problem Cause Solution
The module status LED on the front
panel of the Switch is not lit when
the Layer 3 Module is present.
Power supply problem. Try the following troubleshooting
procedures:
1 Check that the power supply is
plugged into the device, using a
power outlet that is known to be
working.
2 Check that the main power
supply switch on the wall is set
to the ON position.
3 Replace the power cable with a
cable known to be working, and
power-up the Switch.
4 Contact 3Com Technical
Support. See Appendix C.
Layer 3 Module is not correctly
installed.
Remove and then reinstall the Layer
3 Module. See Chapter 3 for more
information about installing the
Layer 3 Module.
(continued)
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