MX301 Chassis LEDs

This topic describes the status LEDs for the chassis and ports on the MX301.

The LEDs on the MX301 indicate the status of the device and its components. You can also use the LEDs for troubleshooting.

Chassis Status LEDs

Figure 1: Chassis Status LEDs

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Chassis status LEDs

Table 1: Chassis Status LEDs
Label	LED Color	LED State	Description
ONLINE	Green	On steadily	Device is online and working as intended.
	Green	Blinking	Device is booting.
	Unlit		Device is offline.
RE FAIL	Green	On steadily	Device is operating normally.
	Red	Blinking	Indicates a fault condition in the device.
	Unlit		Device is offline.
DISK 0	Green	Blinking	SSD0 is being accessed by the device.
DISK 0	Unlit		SSD0 is not active or not being accessed.
DISK 1	Green	Blinking	SSD1 is being accessed by the device.
DISK 1	Unit		SSD1 is not active or not being accessed.
MAJOR	Red	On steadily	Indicates a critical condition that can cause the device to stop functioning. Possible causes include component failure, or a major software failure.
MAJOR	Unlit		No major alarms are present.
MINOR	Amber	On steadily	Indicates a serious but non-fatal error condition such as a maintenance alert or increase in component temperature.
MINOR	Unlit		No minor alarms are present.
PSM OK	Green	On steadily	Both power supply modules are operating normally.
PSM OK	Yellow	On steadily	Indicates an error condition in one or both power supply modules.
FAN OK	Green	On steadily	All fan modules are operating normally.
FAN OK	Yellow	On steadily	Indicates an error condition in one or all fan modules.

Management Port Status LEDs

Figure 2: Management Port Status LEDs

Table 2: Management Port Status LEDs
Callout	Label	LED Color	LED State	Description
1	Status	Green	On steadily	The port speed is 1000 Mbps (1 Gbps).
		Yellow	On steadily	The port speed is 10 Mbps or 100 Mbps.
		Unlit		The link is down.
2	Link Activity	Green	Blinking	A link is established and there is link activity.

WAN Port Status LEDs

Figure 3: WAN Port Status LEDs

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WAN port status LEDs

The WAN port status LEDS on the MX301 (labeled 0 through 25 for each of the available WAN port) can operate in different display modes:

Normal—The port status LED represents the port state or a breakout port state. This is the default mode.
Lane Display—When lane display is on, the router cycles through the ports for the lane status display. Only one port is selected and the display mode for that port changes to lane display while the other ports remain in normal display mode. The corresponding array of lane status LEDs displays the status of each individual lane for the selected port (see Table 4).

Note:
Ports with all individual links in Up state are skipped and are not considered for lane status display, thereby reducing the time needed to cycle through all the ports.
Port Location—The port location (beacon) command (require chassis port-led <start|stop> fpc-slot slot pic-slot slot port port [duration time]) is initiated for a port or a group of ports for a certain period of time. The default duration is five minutes if the duration keyword is not specified.

Note:
The port location command will temporarily override the port LEDs selected for lane display. All other ports will remain in normal display mode.

See Table 3 for the port LED color and blinking state depending on the port configuration, port state, port configuration mode, inserted transceivers, and port display modes.

Table 3: WAN Port Status LEDs
Transceiver Inserted?	Breakout Cable Configuration State	Explicitly Disabled?	Port State	Color - Normal	Color - Port Location On	Color - Lane Display (if available)
Any	No breakout	No	Up	Green	Blinking green	–
Yes	No breakout	No	Down because of transceiver hardware failure	Red	Blinking red	–
Yes	No breakout	No	Down because of a loss of signal (LOS) or Down because of loss of signal (LOS) detection	Off	Blinking green	–
Any	No breakout	No	Down because of any fault except LOS and transceiver hardware failure	Amber	Blinking amber	–
Any	No breakout	Yes	Port disabled in the CLI	Amber	Blinking amber	–
No	Any	No	Anything except disabled port, but no transciever is present	Off	Blinking green	–
Any	Breakout	No	All breakout ports are up	Green	Blinking green	Blinking green
Yes	Breakout	No	Hardware failure because of transceiver initialization error at the port level	Red	Blinking red	Blinking red
Yes	Breakout	No	All breakout ports down with an LOS	Off	Blinking green	Blinking green
Any	Breakout	Any	Any state other than the states described in this table.	Amber	Blinking amber	Blinking amber

Lane Status LEDs

Figure 4: Lane Status LEDs

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Lane status LEDs

The MX301 provides eight separate LEDs (labeled L0 through L7) to display the status of ports operating in breakout mode.

The lane status LEDs can be activated for a port if:

The port is configured in breakout mode.
Transceiver is plugged in.
Port location is activated for one port only.

Table 4 describes the lane status LED.

Table 4: Lane Status LEDs
Transceiver Inserted?	Breakout Cable Configuration State	Explicitly Disabled?	Port State	Color
Yes	Breakout	No	Up	Green
Yes	Breakout	No	Down because of loss of signal (LOS) detection	Off
Yes	Breakout	No	Down because of transceiver hardware failure	Red
Yes	Breakout	No	Down because of any fault except LOS and transceiver hardware failure	Amber
Yes	Breakout	Yes	The breakout port is disabled in the CLI.	Amber

ON THIS PAGE

MX301 Chassis LEDs

Chassis Status LEDs

Management Port Status LEDs

WAN Port Status LEDs

Lane Status LEDs