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Chapter 2: Installation
2.9 LED Indicators
BMC LAN Port LEDs
A dedicated BMC LAN is located on the rear I/O panel and has two LED indicators. The
LED on the right indicates connection and activity, while the LED on the left indicates the
speed of connection. The Link LED may amber, green, or o to indicate the speed of the
connection. Refer to the tables below for more information.
Activity LED
Link LED
Link LED,
Connection Link Speed Indicator
LED Color Denition
Amber 1 GbE/s
Green 100 Mb/s
O 10 Mb/s
Activity LED
Color State Denition
None No Connection
Yellow Solid On Link
Yellow Flashing Active
UID LED Indicator (LED1)
The UID LED1 is located next to the UID switch. The front UID LED is located on the front
panel. When you press the UID switch, both rear UID LED and front UID LED indicators will
turn on. Press the UID switch again to turn o the LED indicators. Use this UID Indicator to
'mark' the system, so the system can be easily identied whether on the front or back (e.g.,
a system rack with multiple units installed).
UID LED Indicator
Color State Denition
None O UID O
Blue Solid On Unit Identied by Local UID Switch
Blue Slow Blinking
Unit Identied via IPMI Web Interface
BMC Heartbeat LED (LEDM1)
A BMC Heartbeat LED is located at LEDM1 on the motherboard. When LEDM1 is blinking,
the BMC is functioning normally. See the table below for more information.
BMC Heartbeat
LED State
Color State Denition
Green Solid On BMC is not ready
Green Blinking BMC Normal
Green Fast Blinking BMC: Initializing