This section explains the LEDs on HPE Alletra 4110 nodes, including front panel LEDs and buttons and rear panel LEDs.

Front Panel LEDs and Buttons

On the front, right side of your node, there are four LEDs. The following diagram shows the LEDs and buttons on the front panel.

The System Power LED and Power On or Standby Button, Health LED, NIC Status LED, and UID Button and LED on a HPE Alletra 4110 node
Label Color and Behavior Description
System Power LED and Power On or Standby Button 🟢 (solid green) System is powered on
System Power LED and Power On or Standby Button 🟢 (1 s. blinking green) Performing power-on sequence
System Power LED and Power On or Standby Button 🟠 (solid amber) System is on standby
System Power LED and Power On or Standby Button Off System is powered off
Health LED 🟢 (solid green) Health is normal
Health LED 🟢 (1 s. blinking green) iLO is rebooting
Health LED 🟠 (blinking amber) System state degraded
Health LED 🔴 (1 s. blinking red) System state critical
NIC Status LED 🟢 (solid green) Linked to network
NIC Status LED 🟢 (1 s. flashing green) Network active
NIC Status LED Off No network activity
UID Button and LED 🔵 (solid blue) UID activated
UID Button and LED 🔵 (1 s. blinking blue) Remote management or firmware upgrade in progress
UID Button and LED 🔵 (0.25 s. blinking blue) Manual iLO reboot sequence initiated
UID Button and LED 🔵 (0.125 s. blinking blue) Manual iLO reboot sequence in progress
UID Button and LED 🔵 (1 fast blue blink) then 3 s. stop iLO service port status is Complete
UID Button and LED 🔵 (4 medium blue blinks) then 1 s. stop iLO service port status is Busy
UID Button and LED 🔵 (8 fast blue blinks) then 1 s. stop iLO service port status is Error
UID Button and LED 🔵 Off UID deactivated

Rear Panel LED

On the back of your node, there is a UID LED.

Color and Behavior Description
🔵 (solid blue) UID activated
🔵 (1 s. blinking blue) Remote management or firmware upgrade in progress
🔵 (0.25 s. blinking blue) Manual iLO reboot sequence has been initiated
🔵 (0.125 s. blinking blue) Manual iLO reboot sequence is in progress
Off UID deactivated

Rear LAN LEDs

On the back of your node, LAN LEDs are located behind the vent holes on the NIC. Each port has one light.

Color Status Description
Off No link
🟢 (solid green) On or blinking Link established