5520 Series Switch LEDs

ExtremeSwitching 5520 Series Front Panel Port LEDs, as described in the following table:

Table 1. 5520 Series Port LEDs

LED

Color/State

Port State

SYStem status LED

(Legacy MGMT function)

Note: The system status LED is solid green to indicate normal operation when the switch is running Fabric Engine.

Green flash slowly

POST Passed,

normal operation, blinks on standalone switch, stack master, and backup nodes in a stack;

off for standby nodes in a stack

Green blinking

POST in progress

Amber blinking

POST failed or overheat

PSU status LEDs P1/P2

Green

Power On

Off

Power off and no power attached

Amber blinking

Power supply failures

Fan status LEDS (F1, F2 and F3)

Green

Normal operation

Amber blinking

Fan failure

Amber Fan absent

Bluetooth Status LED (BT)

Green blinking

Bluetooth pairing in progress

Green

Bluetooth connected

Locator LED (LOC)

Blue blinking

Locator function

The following figure shows the two alternate mode LEDs for 5520 Series switches: SPD and STK. The Mode button is used to cycle through three display modes for the port LEDs. In the default mode, SPD and STK will be off. SPD and STK display modes will expire after 30 seconds, at which time the port LEDs will revert to the default SYS mode.

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5520 Series Mode and System Status LEDs
Note

Note

Front-panel PoE ports use Amber to indicate PoE states.

Port LEDs in Default (SYS) Mode

In the default SYS mode, SPD is OFF, and the port status will display behavior for link, traffic, and PoE as described in the following table:

Table 2. Port LEDs in SYS Mode (default)

Color/State

Meaning

Green

Link is OK; port is not powered

Amber

Link is OK; port is powered; no traffic

Green blinking

Link is OK and transmitting packets; port is not powered

Amber blinking

Link is OK and transmitting packets; port is powered

Amber slow blinking

No link, or disabled port; port is powered

Alternating amber and green

Port has a power fault

Off

Port is not powered, has no link, or is disabled

Port LEDs in SPD Mode

After one press of the Mode button, the port LEDs will enter the SPD (speed) Display Mode, indicated by the SPD LED. SPD mode is used to help determine the operational speed of a port.

There are two LEDs per QSFP28 port on 5520 models. In stack mode, the first LED represents the link state and traffic of the stack port with solid or blinking green. When a QSFP28 port is used for Ethernet and partitioned to 4x10 or 4x25, one LED is shared for two ports. The first LED indicates state for the first two ports and the second LED indicates state for the second two ports. The LED is on or blinking green to indicate link and traffic when any of the 2 ports are up. It is off when both ports are down. In partitioned 2x50, each LED represents link and traffic for one 50G port. In aggregate 1x40 mode, the first LED indicates the port state and traffic and the second LED is off. Color and blink patterns indicate speeds, as referenced by the following table:

Table 3. Port LEDs in SPD Mode

Color/State

Speed

Green slow blinking

10Mbps

Green fast blinking

100Mbps

Green

1000Mbps

Amber slow blinking

2.5Gbps

Green fast blinking

5Gbps

Green slow blinking

10Gbps

Green fast blinking

25Gbps

Green fast blinking

40Gbps

Green fast blinking

50Gbps

Port LEDs in STK Mode

After two presses of the Mode button, the port LEDs will enter the STK Display Mode, indicated by the STK LED. STK mode is used to indicate slot presence and slot number via the first eight port LED, as referenced by the following table:

Table 4. Port LEDs in STK Mode

Color/State

Speed

Green

Slot corresponding to the port number of the LED is present

Green blinking

This slot has slot number corresponding to the port number of the blinking LED

Table 5. Management Port LEDs
Right side LED State
Link Green Link up
Off No link up or port disable
Left side LED State
Act Green blinking Packet transmitting or receiving
Off No packet transmitting or receiving