ExtremeSwitching X620 Series Switch LEDs

The following sections describe the meanings of the LEDs on the ExtremeSwitching X620 series switches.

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X620 Front Panel LEDs

Label or Type Color/State Meaning
M (Management) Slow blinking green (1 Hz) Normal operation
Fast blinking green (2 Hz) Power-on self test (POST) in progress

or

Switch diagnostics are running

Steady green POST passed: system is booting image
Blinking amber System is disabled: POST failed or system overheated
Off No external power is attached
S1, S2 (Stack Management) Steady green Link OK on the indicated stacking port
Blinking green Activity on the indicated stacking port
FAN Steady green Normal operation
Blinking amber Failure
Off No power
Power Supply Unit (PSU) Steady green Normal operation
Blinking amber Input or output power failure
Off Not present
Redundant Power Supply (RPS) Steady green Normal operation
Blinking amber When RPS is present, no supply from PSU
Off No RPS PSU is attached
Ethernet Management Port Blinking green (left) Activity on the indicated port

Link OK

Off (left) Activity on the indicated port
Steady green (right) Link OK
Off (right) No link, or port disabled

Other ports

Steady green Link OK
Blinking green Activity on the indicated port
Off No link, or port disabled
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ExtremeSwitching X620 2-digit Stack Number Indicator

Label or Type Color/State Meaning

Left digit (1)

Reserved for future use.

Right digit (1 – 8)

Indicates the position of this switch in the stack configuration

Upper half blinking

This switch is the stack master node

Lower half blinking

This switch is the stack backup node

Lit steadily

This switch is a standby node in the stack