NETGEAR CG814WG V2 Reference Manual page 17

You can use some of the LEDs to verify connections.
the front panel of the CG814WG v2 Gateway. These LEDs are green when lit.
Table 2-1. LED Descriptions
Label Activity
Power On
Off
Cable Link On (Green)
Off
Upload Blink
Traffic Off
Download Blink
Traffic Off
Wireless On
Blink
Local On (Green)
(Local Area Blink (Green)
Network) On (Yellow)
Blink (Yellow)
Off
Introduction
Reference Manual for the Wireless Cable Modem Gateway CG814WG v2
Description
Power is supplied to the gateway.
Power is not supplied to the gateway.
Configuration of the cable interface by your cable service provider
is complete.
Configuration of the cable interface is still in progress.
Data is being transmitted to the cable interface.
The cable interface is idle.
Data is being received from the cable interface.
The cable interface is idle.
Indicates that the wireless Access Point is operating normally.
Data is being transmitted or received on the wireless interface.
The Local port has detected link with a 100 Mbps device.
Data is being transmitted or received at 100 Mbps.
The Local port has detected link with a 10 Mbps device.
Data is being transmitted or received at 10 Mbps.
No link is detected on this port.
Table 2-1 lists and describes each LED on
2-5