HP 2920 Installation And Getting Started Manual page 16

Introducing the HP 2920 Switches
Fronts of the Switches
Switch LEDs State
LED Mode Act
Indicators
FDx
(green)
Spd
‡
PoE
Usr
Save Power
PS (Power On
Supply
Status
Blink
green/
orange*
orange)
†
Off
Fan Status On
(green/
orange) Blink
orange*
PoE Status On
(green/
‡
†
Orange)
Off
Blink
orange*
Fast blink
orange
**
1-8
Meaning
Indicates the port LEDs are displaying network activity information.
Indicates port Mode LEDs are lit for ports in Full Duplex Mode. Off indicates half duplex.
Indicates the port Mode LEDs are displaying the connection speed at which each port
is operating. Each port Mode LED then indicates one of the following:
• Off – the port is operating at 10 Mbps.
• Blinking** – the port is operating at 100 Mbps.
• On – the port is operating at 1000 Mbps.
Indicates that the port Link and Mode LEDs are displaying PoE information as follows:
• Link On – PoE is enabled on the port.
• Link Off – PoE is disabled on the port.
• Link Blink orange** – the port has an error or the port is denied power due to
insufficient power.
• Mode On – the port is providing PoE power.
• Mode Off – the port is not providing PoE power.
When stacking is enabled, this mode is used to display the member ID of the individual
switch via the port Mode LEDs (for member 1, one LED is lit; for member 2, two LEDs
are lit, and so on), and to indicate which switch is the Standby (Cmd LED will blink).
This mode is indicated by ALL the mode indicator LEDs being Off. This display occurs
only if the switch has been configured with the savepower led command. See the
Management and Configuration Guide for more information on that command.
Normal operation. Power supply is connected and operating correctly.
A redundant power supply is installed but not connected (the switch Fault LED will not
blink simultaneously). Or, a power supply is connected but has experienced a fault (the
switch Fault LED will be blinking simultaneously).
Power supply is not connected or is not installed.
Normal operation, all fans are OK.
One of the unit's fans has failed. The switch Fault LED will be blinking simultaneously.
When the switch is ready to start supplying PoE power.
Should be off only during the boot process.
A port has a internal hardware failure. The switch Fault LED will be blinking
simultaneously.
A port is denied PoE power or is detecting an external PD fault.