Status Indicator LEDs

The following topics are covered in this section:

System-Level Status Indicator LEDs

Status indicator LEDs are located on the chassis and on some of the components like PSUs and Fan modules. LEDs are located on the front (Front Panel) and the rear (Rear Panel) of the switch.

The following topics are covered in this section:

System Status Indicator LED

Figure 1 display the system and the fan status LEDs.

Figure 1. System Status and Fan Status Indicators

1 System status LED 2 Fan status LED
Table 1. System Status Indicator LED States
LED Name LED State Device Status
System Status LED Blinking Green System is powering up.
Green Normal operations. Due to power supply and fan redundancy, this LED will remain green if a single fan or power supply is missing or in a failed state.
Blue The locater function is active.
Amber Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a “graceful shutdown” shortly.
Note: Arista fixed-form switches take approximately 5 to 10 minutes to boot completely.

Fan Status Indicator LED

Figure 1 display the fan status LED for the system.

Table 2. Fan Status Indicator LED States
LED Name LED State Device Status
Fan Status LED Green All fan and power modules are operating normally.
Amber Single fan module is removed or malfunctioning. It is also amber when a PSU is completely removed or has a stuck fan rotor.
Red Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a “graceful shutdown” shortly.

 

Note: Fan Module status LED is located on the fan module and displays the status of the corresponding fan module.

Port Status Indicator LEDs

Port LEDs, located in the vicinity of their corresponding ports, provide link and operational status. Figure A-2 displays a representative Port LED location on the DCS-7020SR-32C2 switch.

Figure 2. Port Status LEDs
1 Port LED 2 Port number

Table 3 provides status conditions that correspond to port LED states. Port LED behavior for QSFP+ and SFP+ ports is consistent.

Table 3. Port LED States (Front)
LED State Status
Off Port link is down.
Green Port link is up.
Yellow Port is software disabled.
Flashing Yellow Port failed diagnostics.

Component Status Indicators

The following topics are covered in this section:

Fan Module Status LED

Each fan and power supply module has an LED that reports the module status. Fan module status LED is on the fan module (Figure 3) and is different from the system-level fan status LED (Fan Status Indicator LED).

Figure 3. Fan Module Status LED

1 Release lever 2 Fan module LED

Table 4 provides status conditions that correspond to fan module status LED states.

Table 4. Fan Module Status LED States
LED State Status
Off The fan module is not detected. If it is inserted, it may not be seated properly.
Green The fan is operating normally. This LED state is exclusive to its fan module, and independent of the states of its neighboring fans and power supplies.
Red The fan has failed.

PSU Module Status LED

The AC power supply module status LEDs are on the power supply modules (Figure 4).

Figure 4. AC Power Supply Status LED


1 Power supply handle 3 Power supply status LED
2 Power supply release lever    

Table 5 provide status conditions that correspond to the AC power supply status LED states.

Table 5. AC Power Supply Status LED States
Power Supply State PWR-400AC
Input power present Normal operation Green
Input power present Power Supply fault Yellow
No Input power Supply installed in chassis Blinking Yellow
Input power present Supply not installed in chassis Blinking Green
Note: You can narrow down the error condition by logging in to the switch to view the specific device state. Refer to the Arista User Manual’s Switch Environment Control chapter, under the topic Viewing Environment Status, for further information on the show environment commands.