Status Indicators

This section discusses the following topics:

Front Indicators

Switch Indicators

The front panel LEDs, fan, and power supply status are on the chassis display system.

The front panel LEDs are labeled, as shown in the following figure.

 

Figure 1. DCS-DS-7720R4-128PE
1 System status LED 5 Port status LED 9 Ethernet management port (RJ45)
2 Fan status LED 6 Port numbers 10 Ethernet management port (RJ45)
3 Power supply status LED 7 Port status LED 11 Console (serial) port
4 Supervisor card module status LED 8 Grounding 12 USB port

 

 

Figure 2. DCS-DL-7700R4-38PE
1 System status LED 5 Port numbers 9 Port status LEDs
2 Fan status LED 6 Port numbers 10 Ethernet management port (RJ45)
3 Power supply status LED 7 100G Port number 11 USB port
4 Supervisor card module status LED 8 Port status LEDs 12 Ethernet management port (RJ45)

 

Note: The LED behavior is controlled by software and could be different from those described below.

 

 

Table 1. Switch Status Indicators 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 beacon (locator) 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.
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.
Supervisor Active LED Green PSU is functioning and fully operational. AC is present, Aux output is ON, and Main output is ON.
Off PSU has been removed or is not operating properly due to the AC cord being unplugged, its fan rotor being stuck, or an internal fault.
Port Status LED Flashing dim purple System booting.
Off Default/System not powered up.

 

Port Indicators

Port LEDs near their corresponding ports provide a link and operational status.

The following figure displays the Port LED location on the switch.

Table 2 - Port LED States (Front) provides status conditions that correspond to port LED states.

 

Table 2. Port LED States (Front)
LED State Status
Off No signal for enabled interfaces.
Green Any enabled interface is connected, AND no link is bad.
Yellow (amber/orange) All interfaces are software disabled, or a link is bad.
Flashing Yellow (amber/orange) Port failed diagnostics.

 

Rear Status Indicators

You can access the fan and power supply modules are accessed from the rear panel.

Each fan and power supply module contains an LED that reports the module status. The illustrations are for a typical fan module and PSU.

Fan Status LEDs are on the fan modules, as displayed in Figure 3 - Fan Status LED.

 

Figure 3. Fan Status LED

1 Fan module status LED

 

Table 3 - Fan Status LED States (Rear) provide conditions corresponding to fan status LED states.

 

Table 3. Fan Status LED States (Rear)
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.

 

The AC Power Supply Status LEDs are on the power supply modules, as displayed in Figure 4 - AC Power Supply Status LED.

 

Figure 4. AC Power Supply Status LED

1 Power supply status LED

 

Table 4 - AC Power Supply Status LED States (Rear) provides conditions corresponding to the AC power supply status LED states.

 

Table 4. AC Power Supply Status LED States (Rear)
Power Supply State PWR-2421 HV
Input power present Normal operation Green
Input power present Power Supply fault Yellow
No Input power Supply installed in chassis Off
Input power present Supply not installed in chassis Green

 

The DC Power Supply Status LEDs are on the power supply modules, as displayed in Figure 5 - DC Power Supply Status LED. Depending on the power supply, the LED could be in a different location on the PSU.

 

Figure 5. DC Power Supply Status LED
1 Handle 3 Power supply status LED
2 Connector 4 Release

 

Table 5 - DC Power Supply Status LED States (Rear) provides conditions corresponding to the DC power supply status LED states.

 

Table 5. DC Power Supply Status LED States (Rear)
Power Supply State PWR-2411-MC
Input power present Normal operation Green
Input power present Power Supply fault Blinking Amber/Yellow
No Input power Supply installed in chassis Off
Input power present Supply not installed in chassis Blinking Amber/Yellow

 

Note: You can narrow 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 Viewing Environment Status for further information on the show environment commands.