Installation Guide

Table 46: Front Panel LEDs (continued)
Label or Type Color/State Meaning
FAN Steady green Normal operation
Blinking green
(rapid)
Power-on self test (POST) is in progress.
Blinking amber Failure
O No power
PSU-1 Steady green Normal operation
Blinking amber Failure
O No power; no power supply present.
PSU-2 Steady green Normal operation
Blinking amber Failure
O No power; no power supply present.
Stack Management 1 – 4 Steady green Link OK on the indicated stacking port.
Blinking green Activity on the indicated stacking port.
Table 47: 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
SummitStack
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.
Ethernet Ports
1 – 24 or 1 – 48
Steady green Link OK
Blinking green Activity
O No link; port is disabled.
Table 48: Management Port
Label or Type Color/State Meaning
Left LED Blinking green Activity
O No link; 10/100-Mbps link
Summit Switches Summit X480 Series Switch LEDs
Summit Family Hardware Installation Guide 139