Determining status of a core switch blade (CR4S-8)
79
Monitor System Components
Table 6 describes the core switch blade LED patterns and the
recommended actions for those patterns.
Table 6 CR4S-8 blade LED descriptions
LED purpose Color Status Recommended action
Power Steady green CR4S-8 blade is on. No action required.
No light (LED is off) CR4S-8 blade is not on. Ensure that the blade is firmly seated
and has power.
Status No light (LED is off) CR4S-8 blade is either
healthy or does not have
power.
Verify that the power LED is on.
Steady amber CR4S-8 blade is faulty or the
switch is still booting.
Ensure that the blade is firmly seated
and the switch has completed booting.
If the LED remains yellow, contact EMC
Customer Service.
Slow-flashing amber (on 2
seconds; then off 2 seconds)
CR4S-8 blade is not seated
correctly or is faulty.
Pull the blade out and reseat it. If the
LED continues to flash, replace the
blade.
Fast-flashing amber (on 1/2
second; then off 1/2 second)
Environmental range
exceeded.
Check for out-of-bounds environmental
condition and correct it.
LINK LED No light (LED is off) No ICL, or ICL cable present
but no connection.
Ensure that the ICL cable is correctly
installed.
Steady green ICL connected. No action required.
ATTN LED No light (LED is off) ICL operational. No action required.
Blinking amber Attention required. Ensure that the ICL cable is correctly
installed.
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