LED |
Description |
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The LED, referred to as the System LED, shows the status of the switch (system). |
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Off (dark) |
Switch is not powered on. |
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Solid green |
Switch is healthy. |
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Blinking green |
Switch is running power-on self-test (POST). |
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Solid amber |
Switch is faulty, is rebooting, or is in recovery. |
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The LED, referred to as the Fault/Stack Mode LED, shows whether the switch is in stack mode or if a system fault exists.
Select the Stack mode from the View list. See also the description of the Stack mode in Port States. If the switch is not in Stack mode, this LED shows the system fault status. |
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Off (dark) |
No system fault exists and the Stack mode for the port LEDs is off. |
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Solid green |
Stack mode for the port LEDs is on. |
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Solid amber |
A system fault exists. |
MST |
The MST LED, referred to as the MASTER LED, shows whether the switch is the stack master or is a standalone switch. To display the information of another switch in the
stack, choose a stack member number from the Stack list. |
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Off (dark) |
The switch is not the stack master. |
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Solid green |
The switch is the stack master or is a standalone switch. |
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Solid amber |
An error occurred during stack master election or a stack error exists. |
MBR |
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Off (dark) |
The MBR LED, referred to as the STACK LED, remains "off" in the Front Panel view of the device manager. Either
- Select the Stack mode from the View list. See also the description of the Stack mode in Port States.
- See the hardware installation guide for information on the behavior of this LED on the physical switch.
To display the information of another switch in the
stack, choose a stack member number from the Stack list. |
Ethernet
Management
Port LED |
This LED shows the status of the Ethernet Management (FA0) port. |
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Off (dark) |
No link is present on the Ethernet Management (FA0) port. |
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Solid green |
Link is present between the Ethernet Management (FA0) port and the management station. |
By default, the port LEDs show port status. To display the port duplex, the port speed, and switch stack information from the port LEDs, you must use the View list from the device manager or the Mode button on the physical switch.
LED Mode |
Description |
Status |
In this mode, the port LEDs show port status. |
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Off (dark) |
No link. |
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Solid green |
Link is up, but there is no activity on the link. |
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Blinking green |
Link has activity. |
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Solid brown |
Port is administratively disabled. |
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Yellow |
Port is error disabled. |
| Blinking green and amber |
Link is faulty. |
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Solid amber |
Port is faulty, is disabled due to an error condition, or is in an STP-blocked state. |
Duplex |
In this mode, the port LEDs show the duplex mode (full duplex or half duplex) of the ports.
Note: The 10/100/1000 ports operate only in full-duplex mode. |
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Off (dark) |
No link. |
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Solid light blue |
Port is in half-duplex mode. |
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Solid green |
Port is in full-duplex mode. |
Speed |
In this mode, the port LEDs show the operating speed (10, 100, or 1000 Mb/s, or 10 Gb/s) of the ports. |
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Off (dark) |
No link. |
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Solid light blue |
10 Mb/s. |
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Solid green |
100 Mb/s. |
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Blinking green |
1000 Mb/s (1 Gb/s). |
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Fast blinking green |
10 Gb/s. |
Stack |
In this mode, the port LEDs show the switch stack status. This mode is available on switches with stack ports. |
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The STACK LED is off (dark) |
Stack mode is off. |
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Blinking green |
Port number means stack member number. |
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Solid green |
Stack cable is connected. |
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Solid amber |
Stack cable is not connected. |
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RJ-45 port |
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Internal port |
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Stack port |
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USB console port |
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Small form-factor pluggable (SFP) module slot (empty) |
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Cisco Dual SFP X2 converter module (empty) |
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Fiber-optic SFP module ports |
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1000BASE-T SFP module port |
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10-Gigabit X2 module slot (empty) |
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X2 transceiver module ports
(for 10GBASE-ER, -LR, -SR, or -LX4) |
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X2 transceiver module port
(for 10GBase-CX4) |