ExtremeSwitching 5720 Series Front Panel LEDs, as described in the following table:
|
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 primary, 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/F3/F4) |
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 LEDs for 5720 Series switches, including the two alternate mode LEDs: SPD and STK. You can use the Mode button to cycle through the three display modes for the port LEDs. In the default mode, SPD and STK are off. SPD and STK display modes expire after 30 seconds, at which time the port LEDs revert to the default SYS mode.
Note
Front-panel PoE ports use Amber to indicate PoE states.
In the default SYS mode, SPD is OFF, and the port status displays behavior for link, traffic, and PoE as described in the following table:
|
Color/State |
Meaning |
|---|---|
|
Green |
Link is OK; port is not PoE powered |
|
Amber |
Link is OK; port is PoE powered; no traffic |
|
Green blinking |
Link is OK and transmitting packets; port is not PoE powered |
|
Amber blinking |
Link is OK and transmitting packets; port is PoE powered |
|
Anber slow blinking |
No link, or disabled port; port is PoE powered |
|
Alternating amber and green |
Port has a power fault |
|
Off |
Port is not PoE powered, has no link, or is disabled |
After one press of the Mode button, the port LEDs enter the SPD Display Mode, indicated by the SPD LED. SPD mode is used to help determine the operational speed of a port.
RJ45 and SFP ports have a single LED per port. QSFP ports have four LEDs because QSFP ports can be divided into four different channels, each of which can indicate link and activity independent of the other channels. When a QSFP port is divided, each LED indicates the rate of an individual channel. When a QSFP port is used as single port, all of the channel LEDs indicate the rate of the single port. Color and blink pattern indicate speeds, as referenced by the following table:
|
Color/State |
Speed |
|---|---|
|
Green fast blinking |
100Mbps |
|
Green |
1Gbps |
|
Amber slow blinking |
2.5Gbps |
|
Amber fast blinking |
5Gbps |
|
Green slow blinking |
10Gbps |
|
Green fast blinking |
25Gbps |
| Green fast blinking | 40Gbps |
| Green fast blinking | 50Gbps |
| Green fast blinking | 100Gbps |
After two presses of the Mode button, the port LEDs 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 LEDs, as referenced by the following table:
|
Port 1-8 Color/State |
Speed |
|---|---|
|
Green |
Slot corresponding to the port number of the LED is present |
|
Green blinking |
Slot number corresponding to the port number of the blinking LED |
The management port uses two LEDs to indicate port activity and link status, as referenced by the following table:
| LED | State | Description |
|---|---|---|
| Link/Speed | Off | Operating at 10Mbps |
| Amber | Operating at 100Mbps | |
| Green | Operating at 1Gbps | |
| Act | Off | No link |
| Green | Link is OK; no traffic | |
| Green blinking | Link is OK and transmitting packets |
The blue LED labelled LOC on the front panel is the locator LED, which is controlled by using the CLI.