Leds - HP J9979A Installation And Getting Started Manual

LEDs

The front panel of the switch provides status LEDs for system monitoring.
The following table details the functions of the various indicators.
LED State
Power On
(green)
Blinking*
Off
Fault/Locator On
(orange)
Blinking**
Blinking***
Off
Link/Act On
(green)
Off
Blinking
Spd On
‡
Mode - Spd
Flashing
(green)
Off
‡
Mode - PoE On
(green)
Blinking**
* The blinking behavior is a 6 second on/off cycle; 5 seconds on, 1 second off.
** The blinking behavior is a 2 second on/off cycle; 1 second on, 1 second off.
*** The blinking behavior is a 4 second on/off cycle; 3 seconds on, 1 second off.
‡
(HP 1820 PoE+ switches only) Press the Mode button in for PoE mode, leave the Mode button out for Spd mode.
Meaning
The switch is receiving power.
(1820-8G only) Power is available on the PoE In port (Port 1).
The switch is NOT receiving power.
On briefly after the switch is powered on or reset, at the beginning of switch self
test. If the LED remains on, it indicates a detected hardware failure during the self
test.
A fault has occurred on the switch or one of the switch ports. The Link LED for the
port with the fault will blink simultaneously.
The LED is used to locate a specific switch in an area full of switches. The LED
blinks for 30 minutes when activated through the switch software.
The normal state; indicates that there are no fault conditions on the switch.
The port is enabled and receiving a link indication from the connected device.
One of these condition exists:
• no active network cable is connected to the port
• the port is not receiving link beat or sufficient light
• Green Mode has been enabled.
Indicates that there is network activity on the port.
If the Link/Act LED is blinking simultaneously with the Fault/Locator LED, it
indicates a fault on the port. The blinking behavior (1 second on, 1 second off) is
the same as the Fault/Locator LED.
Indicates the port is operating at 1000 Mbps.
Indicates the port is operating at 100 Mbps.
Indicates the port is operating at 10 Mbps.
Indicates the Port LEDs are lit for ports that are providing PoE power to the
connected device.
There is an oversubscription condition (not enough PoE power available) or the
port has experienced a fault condition for PoE delivery.
Switch Overview
Switch Hardware Features
1-5