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4-2 TROUBLESHOOTING
Troubleshooting
With the Status LEDs
A blinking Port Status indicator signals a problem with a port or a link
connected to a port. Once a port detects a problem, you can further
analyze the problem by counting the number of blinks. Ta ble 4 -2
provides troubleshooting suggestions for each of the blinking
sequences.
Table 4-2 Troubleshooting With the Status LEDs
LED State Indication
Possible
Problem
Troubleshooting Suggestions
1 Blink Link Failure Cable(s) not
connected.
Connect cable(s).
Cable(s) broken. Check cables with cable tester.
Repair or replace cables.
Link Integrity
mismatch.
Make sure that both ends of the
connection have the same Link
Integrity setting.
2 Blinks Port
Partitioned
Faulty cable. Check cable with cable tester.
Repair or replace cable.
Looped cable. Check the cable and replace if
necessary.
Off Ports Disabled Ports disabled. Enable ports.
24-Port module
not powered.
Check the controller module
Power LEDs.
Broken LED. Press the LED test on the
controller module.
Bad 24-Port
module.
Replace module.