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52 CHAPTER 4: PROBLEM SOLVING
Solving Problems
Indicated by LEDs
If the LEDs on the Switch indicate a problem, refer to the list of suggested
solutions below.
The Power LED does not light
Check that the power cable is firmly connected to the Switch and to the
supply outlet. If the connection is secure and there is still no power, you
may have a faulty power cord or an internal fault. Check the power cord
by:
■ testing it in another device
■ connecting a working power cord to the ‘problem’ device
Then contact your supplier for advice.
On powering-up, the Alert LED remains orange
This indicates that a port has failed and has been automatically disabled.
You can verify this by checking that the Port Status LED is flashing
Green/Yellow. This could be due to loop back failure. If a port fails, the
Switch passes its Power On Self Test and continues to operate normally.
On Powering up, the Alert LED flashes orange while the Switch is starting
up. This is normal and does not indicate any of the above conditions.
A Port Status LED is flashing green/yellow
The port has failed and has been automatically disabled. The Switch
passes its Power On Self Test and continues to operate normally, even if
one or more ports are disabled.
A link is connected and yet the Status LED for the port does not
light
Check that:
■ The Switch and the device at the other end of the link (or cable) are
connected securely.
■ The devices at both ends of the link are powered-up.