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Troubleshooting

N450 WiFi Cable Modem Router Model N450/CG3000Dv2

Basic Functions

After you have turned on power to the modem router, do the following:

1. Check to see that the Power LED is lit.

2. Check that the numbered Ethernet LEDs light momentarily.

3. After a few seconds, check that the LEDs are lit for any local ports that are connected.

The following table provides help when you are using the LEDs for troubleshooting.

Table 2. LED behavior

Connect to the Modem Router’s Main Menu

If you are unable to access the modem router’s main menu from a computer on your local

network, check the following:

• Check the Ethernet connection between the computer and the modem router as

described in

Basic Functions on page 81.

LED Behavior Action

All LEDs are off when the modem

router is plugged in.

• Make sure that the power cord is properly connected to your

modem router and that the power supply adapter is properly

connected to a functioning power outlet.

• Check that you are using the 12 V DC power adapter supplied by

NETGEAR for this product.

If the error persists, you have a hardware problem. Contact technical

support.

All LEDs stay on. Clear the modem router’s configuration to factory defaults. This sets

the modem router’s IP address to 192.168.0.1. See Factory Default

Settings on page 86.

If the error persists, you might have a hardware problem. Contact

technical support.

LAN LED is off for a port with an

Ethernet connection.

• Make sure that the Ethernet cable connections are secure at the

modem router and at the hub or computer.

• Make sure that power is turned on to the connected hub or

computer.

• Be sure that you are using the correct cable.

Internet LED is off and the modem

router is connected to the cable

television cable.

• Make sure that the coaxial cable connections are secure at the

modem router and at the wall jack.

• Make sure that your cable service provider provisioned your cable

Internet service. Your provider should verify that the signal quality

is good enough for cable modem service.

• Remove any excessive splitters you might have on your cable line.

It might be necessary to run a “home run” back to the point where

the cable enters your home.