This chapter provides instructions for monitoring the status of your GT 50. It includes the following topics:

Monitor the GT 50 Status Lights

There are four status lights on the front of the GT 50. These lights indicate the current overall status of the GT 50.

The following table defines the states of the GT 50 status lights.

Meaning of the States of the GT 50 Status Lights
State	Meaning
OFF	Light is not ON.
Slow BLINK	Light flashes every 1 to 2 seconds.
Fast BLINK	Light flashes 3 to 4 times per second.
WINK	Light is almost always ON, but periodically turns OFF for a fraction of a second.
ON	Light is always on and never winks or blinks.

GT 50 Front Panel Status Lights
Light	State	Meaning
PWR	OFF	No DC power to the router. DC voltage is out of tolerance.
	Slow BLINK Fast BLINK WINK	DC voltage is intermittent and unreliable.
	ON	DC power is OK.
OK	OFF	Router failed Power On Self Test (POST).
	Slow BLINK	Router is loading router software. Router is running BOOT software.
	Fast BLINK	Router is running Power On Self Test (POST).
	WINK	Router is running router software.
	ON	Router is no longer running software.
WAN	OFF	WAN port is not operational.
	Slow BLINK Fast BLINK	N/A
	WINK	WAN port is operational and is sending or receiving packets.
	ON	WAN port is operational, but there is no network traffic.
LAN	OFF	Ethernet port is not operational.
	Slow BLINK	Router is downloading a file via the Ethernet port.
	Fast BLINK	N/A
	WINK	Ethernet port is operational and is sending or receiving packets.
	ON	Ethernet port is operational, but there is no network traffic.

The GT 50 also has two status lights (LEDs) for the LAN connector on the back panel. The left light is for link status, and the right light is for activity status.

GT 50 Back Panel Status Lights
Light	State	Meaning
Link (RJ-45) (Left)	OFF	No physical connection to the Ethernet hub or PC.
	Slow BLINK Fast BLINK WINK	Unreliable connection to Ethernet or hub.
	ON	Proper physical connection to Ethernet or hub.
Activity (RJ-45) (Right)	OFF	No network traffic to or from the router.
	Slow BLINK Fast BLINK WINK ON	Ethernet port is sending or receiving packets.