Front Panel LEDs
The following are the global LEDs found on the devices:
• System—(Green) The LED lights steady when the switch is powered on, and flashes when booting,
performing self-tests, or acquiring an IP address. If the LED flashes Amber, the switch has detected a
hardware or firmware failure, and/or a configuration file error.
The following LEDs describe the stacking behavior of the switch.
• Stack ID LED (Green) - The LED lights steady when the switch is stacked and the corresponding number
indicates its Stack ID.
• Active Unit ID LED - indicating this is the stack active unit.
• System LED - Every 20 seconds, the System LED will flash according to unit ID of the member unit.
• Flash = LED going off and then on again.
• According to unit ID of the unit. This means
• Unit 1 (if not active unit) - system LED will flash 1 time
• Unit 2 (if not active unit) - system LED will flash 2 times
• Unit 3 - system LED will flash 3 times
• Unit 4 -system LED will flash 4 times;
• The duration of each flash (LED off time) will be as follows:
• LED off time (in each flash) ~ 0.5 seconds.
• “Interim” LED on (between 2 LED offs) ~ 0.5 seconds
• If a member unit is removed from the stack, its system LED will continue to flash according to
above definition.
The following are per port LEDs:
• LINK/ACT—(Green) Located on the left of each port. The LED lights steady when a link between the
corresponding port and another device is detected, and flashes when the port is passing traffic.
• SFP+ (if present)—(Green) Located on the right of a 10G port. The LED lights steady when a connection
is made through the shared port, and flashes when the port is passing traffic.
• XG—(Green) Located on the right of a 10G port. The LED lights steady when another device is connected
to the port, is powered on, and a 10 Gbps link is established between the devices. When the LED is off,
the connection speed is under 10 Gbps or nothing is cabled to the port.
• Gigabit—(Green) Located on the right of the OOB and 1G port. The LED lights steady when another
device is connected to the port, is powered on, and a 1000 Mbps link is established between the devices.
When the LED is off, the connection speed is under 1000 Mbps or nothing is cabled to the port.
• PoE (if present)—(Amber) Located on the right of the port. The LED lights steady when power is being
supplied to a device attached to the corresponding port.
Get To Know Your Switch
8
Get To Know Your Switch
Front Panel LEDs
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