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Netgear CG3000D Home Gateway

Last Updated: Mon, 16 May 2016 > Related Articles


Learn about the available ports and an explanation of the status lights on a Netgear CG3000D Home Gateway.



Front View

Back View

The Netgear CG3000D has the following ports available on the back of the gateway:

  • ETHERNET - Four ports connect to the Ethernet port on your computer or home network.
  • USB - Connects to selected client devices.
  • CABLE - Connects to the cable wall outlet.
  • POWER - Connects the gateway to the power adapter.
  • POWER ON / OFF - Turns the gateway on and off.

Modem Lights

The lights indicate the current status of your router. To troubleshoot any connection problems, use the table below.

Router LightStatusProblemSolution
PowerSolid GreenNone. The gateway is powered on.N/A
Blinking GreenPower on self-testN/A
OffNo power.Verify power supply connections and electrical outlet. Also make sure the outlet is not connected to a switch.
DSSolid GreenNoneN/A
Blinking GreenNone. The gateway is scanning for a downstream channel.N/A
OffNone. No downstream channel is locked.N/A
USSolid GreenNoneN/A
Blinking GreenNone. The gateway is scanning for an upstream channel.N/A
OffNone. No upstream channel is locked.N/A
InternetSolid GreenNone. The cable modem is online.N/A
Blinking GreenNone. The cable modem is synchronizing with the Cox network.There is network activity over the Internet port.
OffThe cable modem is offline.Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
1, 2, 3, 4Solid GreenNone. The gateway is successfully connected to a device through that port.


Blinking GreenNone. There is network activity over that port.N/A
OffNo devices are connected.Verify Ethernet cable connections, the TCP/IP settings and the NIC. NIC drivers may need to be reinstalled. If these steps do not resolve the issue, contact Customer Support.

Mac Address


The Netgear CG3000D comes configured with wireless security. By default, the Netgear home networking gateway supports up to 802.11n wireless standards and uses WPA / WPA2 wireless security settings. The SSID and Passphrase are printed on the label on the gateway.

  • The SSID on the gateway is the same as the last 6 characters of the Wireless MAC address.
  • The Passphrase is the same as the 9-digit serial number of the home networking gateway.


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