Chassis Status LEDs on ACX7100-48L Routers

The ACX7100-48L routers have four status LEDs that indicate the system status. You can find these LEDs to the right of the network ports (see Figure 1).

Chassis Status
LEDs on an ACX7100-48L Router

Table 1 describes the chassis status LEDs on ACX7100-48L routers, their colors and states, and the status that they indicate. You can view the colors of the LEDs remotely through the CLI by running the operational mode command show chassis led.

Table 1: Chassis Status LEDs on ACX7100-48L Routers

Name	Color	State	Description
`ALM`—Alarm LED	Unlit	Off	The router is halted, or there is no alarm.
	Red	On steadily	A major hardware fault has occurred, such as a temperature alarm or power failure, and the router has halted (except during a single rotor failure in a fan module). Switch off power to the router and unplug the power cords. Correct any voltage or site temperature issues, and allow the router to cool down. Power on the router, and monitor the power supply and fan LEDs to determine where the error is occurring.
	Red	Blinking	Indicates the presence of a major and a minor alarm.
	Amber	On steadily	A minor alarm has occurred, such as a software error. Switch off power to the router and unplug the power cords. Power on the router, and monitor the status LEDs to ensure that Junos OS Evolved boots up properly.
	Amber	Blinking	Indicates the presence of a major and a minor alarm.
`SYS`—System LED	Unlit	Off	The router is powered off or halted.
	Green	On steadily	Junos OS Evolved is loaded on the router.
		Blinking	The device is loading the Software or the device is powering off.
		Slow blinking	The device is powering up.
`MST`—Primary LED	Unlit	Off	The router is a linecard member.
`MST`—Primary LED	Green	On steadily	The router is a standalone router.
`ID`—Identification LED	Unlit	Off	The beacon feature is not enabled on the router. You can enable this feature by using the request chassis beacon command.
`ID`—Identification LED	Blue	Blinking	The beacon feature is enabled on the router. You can disable this feature by using the request chassis beacon command.

1 — `ALM` (Alarm)	3 — `MST` (Primary)
2 — `SYS` (System)	4 — `ID` (Identification)