Monitoring the Device
5520 Series Switch LEDs on page 124
Versatile Interface Modules (VIM) Port LEDs on page 126
The following topics help you monitor the status of the switch/appliance as it is running.
5520 Series Switch LEDs
ExtremeSwitching 5520 Series Front Panel Port LEDs, as described in the following table:
Table 27: 5520 Series Port LEDs
LED Color/State Port State
SYStem status LED
(Legacy MGMT function)
Green Flash slowly POST Passed,
normal operation, blinks on standalone switch,
stack master, and backup nodes in a stack;
o 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
O Power o and no power attached
Amber Blinking Power supply failures
Fan status LEDS (F1, F2 and F3) Green Normal operation
Amber Blinking Fan failure
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 o. SPD and STK display modes will expire after 30 seconds, at which time the port
LEDs will revert to the default SYS mode.
124
ExtremeSwitching 5520 Series Hardware Installation Guide
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