Extreme Networks Summit 300-24 Hardware Installation Manual page 83

• Stack
A column of four LEDs (Figure 33) indicates the unit number of the switch in a stack.
• 10/100/1000BASE-T port status
Each of the 48 copper 10/100/1000BASE-T ports has an associated LED located above the port.
• Fiber port status
Each of the four optical fiber ports has an associated LED located above the port.
Figure 33: Stack LEDs on the Summit 400-48t switch
Table 16 describes the activity of the front-panel LEDs on the Summit 400-48t switch.
Table 16: Summit 400-48t switch LED activity
Unit Status LED (MGMT LED)
Fan Status LED
Power Supply LEDs
PSU-I
PSU-E
Extreme Networks Consolidated "i" and "e" Series Hardware Installation Guide
ES4K045
Color Indicates
Green, slow The switch is operating normally.
blinking
Green, fast The power-on self-test (POST) is in progress.
blinking
Green, solid POST passed; ExtremeWare is booting.
Amber, blinking The switch has failed its POST or an overheat condition is detected.
Off The switch has no power.
Color Indicates
Green solid All fans are operating normally.
Amber blinking One or more fans has failed. The switch continues to operate unless
over-heating occurs.
Off The switch has no power.
Color Indicates
Green, solid The internal power supply is operating normally.
Amber, blinking The internal power supply has failed. Replace the internal power
supply as soon as possible.
Off
The internal power supply has no power.
Color Indicates
Green, solid The external power supply is operating normally.
Off The external power supply is not connected.
Summit 400 "e" Series Switches
83