LEDs

This appendix describes the conditions indicated by the chassis and module LEDs on the Cisco Nexus Fabric Extenders (FEXs).

This appendix includes the following sections:

Chassis and Module LEDs for the Cisco Nexus Fabric Extenders

This section includes the following topics:

Chassis and Module LED Descriptions

Table E-1 describes the chassis LEDs for the Cisco Nexus Fabric Extenders.

 

Table E-1 LEDs for the Cisco Nexus Fabric Extenders

Component
LED
Status
Description

Chassis
(port side exhaust and back)

ID

On
(blue)

Identifies the chassis receiving the beacon signal.

Status

Solid on
(green)

All diagnostics pass. The module is operational.

Blinking (green)

The module is cold booting, or is operational but the network interface ports are not connected to a parent switch.

Off

The module is not receiving power.

On
(amber)

The module is booting or running diagnostics.

An overtemperature condition has occurred. The temperature threshold has been exceeded by a small value during environmental monitoring.

Blinking
(amber)

An overtemperature condition has occurred. The temperature threshold has been exceeded by a large value during environmental monitoring.

If the module fails during initial reset, the LED continues to blink and the module does not come online.

The module has a runtime failure and is brought offline.

Fan and fan tray
(port side exhaust of chassis)

Status

Solid on
(green)

All diagnostics pass. The module is operational.

Off

The module is not receiving power.

Solid on
(amber)

The module is booting or running diagnostics.

Blinking
(amber)

If the module fails during initial reset, the LED continues to blink and the module does not come online.

The module has a runtime failure and is brought offline.

Power supply
(port side exhaust of chassis)

OK (green)

Solid on

Power supply is on and okay.

Blinking

12 voltage standby (VSB) is on but the power supply unit is not powering the other modules.

Off

No AC power to the power supply.

FAULT (amber)

Solid on

Power supply failures, over-voltage, over-current, or over temperature has occurred.

Blinking

AC is present, 12 VSB on, and the power supply is off.

Off

Operating normally.

Port LED

Indicates LED status

Off

The port is not active or the link is not connected.

Solid on
(green)

The port is active. The link is connected and operational.

Solid on
(amber)

The module or port is disabled through the CLI command or the module is initializing.

Blinking
(amber)

The port is faulty and has been disabled.

For a description of the two power supply status, see the “Power Supply Status” section.

Power Supply Status

This section describes the power supply LED indicators for the Cisco Nexus Fabric Extenders. Table E-2 describes the status indicated by the Cisco Nexus 2332TQ, Cisco Nexus 2348TQ, Cisco Nexus 2348TQ-E, Cisco Nexus 2348UPQ, Cisco Nexus 2248TP-E, Cisco Nexus 2248TP, 2232PP, and 2224TP power supply LEDs. Table E-3 describes the status indicated by the Cisco Nexus 2148T power supply LEDs.

 

Table E-2 Power Supply LED Indicators for the Cisco Nexus 2332TQ, 2348TQ-E/TQ, 2348UPQ, 2248TP-E/TP, 2232PP, and 2224TP

Condition
OK LED Status (Green)
FAIL LED Status (Amber)

No AC power to the power supplies

Off

Off

Power supply failure (includes overvoltage, overcurrent, overtemperature, and fan failure)

Off

On

Power supply warning events where the power supply continues to operate (high temperature, high power, and slow fan)

Off

1 blinking

AC present /voltage standby (VSB) on, and power supply unit off

blinking

Off

Power supply On and OK

On

Off

 

Table E-3 Power Supply LED Indicators for the Cisco Nexus 2148T

Condition
INPUT OK LED Status (Green)
OUTPUT OK LED Status (Red)

No AC power to the power supplies

Off

Off

Power supply failure (includes overvoltage, overcurrent, overtemperature, and fan failure)

Off

On

Power supply warning events where the power supply continues to operate (high temperature, high power, and slow fan)

Off

Blinking

AC present and power supply unit off

Blinking

Off

Power supply On and OK

On

Off

Port LEDs

This section includes the following topics:

Ethernet Port LEDs

Table E-4 lists the LED descriptions for the RJ-45 Ethernet port LEDs.

 

Table E-4 Ethernet Port LED Descriptions
LED
Status
Description

Left

Off

No link

Solid green

Physical link

Right

Off

No activity

Solid green (blinking green on the Cisco Nexus 2348TQ-E)

Activity

Ethernet and Fibre Channel LEDs

There are 20 to 26 port activity LEDs on the FEX depending on whether the module is a Fibre Channel or 10-Gigabit Ethernet module. Table E-5 describes the behavior of the port LEDs.

 

Table E-5 Port-Level LEDs
Link State
LED State
Notes

Link Down

Off

—

POST failed on port

Blinking (Amber)

—

Administrative disabled

On (Amber)

Depending on the product, the LED could be off, or solid amber

Link Up, port in STP forwarding state

On (Green)

Blinks based on network activity