Table 9: X440-G2 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
No board power
Redundant Power Supply
(RPS)
Steady green
Normal operation
Blinking amber
Power failure
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
Table 10: Additional Port LED Meanings for PoE Switches: X440-G2-12p-10GE4,
X440-G2-24p-10GE4, and X440-G2-48p-10GE4
Label or Type
Color/State
Meaning
Steady green
Link is OK; port is not powered
ExtremeSwitching X440-G2 Series Switch LEDs
ExtremeSwitching Switches
46
ExtremeSwitching Hardware Installation Guide