NETGEAR CG3000Dv2 user manual Troubleshoot the ISP Connection

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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway

•Make sure that your computer’s IP address is on the same subnet as the gateway. If you are using the recommended addressing scheme, your computer’s address should be in the range of 192.168.0.10 to 192.168.0.254.

Note: If your computer’s IP address is shown as 169.254.x.x:

Recent versions of Windows and Mac OS generate and assign an IP address if the computer cannot reach a DHCP server. These autogenerated addresses are in the range of 169.254.x.x. If your IP address is in this range, check the connection from the computer to the gateway and reboot your computer.

•If your gateway’s IP address has been changed and you do not know the current IP address, clear the gateway’s configuration to factory defaults. This sets the gateway’s IP address to 192.168.0.1. For more information, see Factory Default Settings on page 54.

•Make sure that your browser has Java, JavaScript, or ActiveX enabled. If you are using Internet Explorer, click Refresh to make sure that the Java applet is loaded.

•Try quitting the browser and launching it again.

•Make sure that you are using the correct login information. The gateway user name is admin, and the default password is password, both in lower case letters. (Caps Lock should be off when you enter these.)

If the gateway does not save changes you have made, check the following:

•When entering configuration settings, be sure to click the Apply button before moving to another screen, or your changes are lost.

•Click the Refresh or Reload button in the web browser. The changes might have occurred, but the web browser might be caching the old configuration.

Troubleshoot the ISP Connection

If your gateway is unable to access the Internet and your Internet LED is on, you might need to register the cable MAC address or device MAC address of your gateway with your cable service provider.

Additionally, your computer might not have the gateway configured as its TCP/IP gateway. If your computer obtains its information from the gateway by DHCP, reboot the computer and verify the gateway address. For more information, see Reserve an IP Address for DHCP Use on page 44.

Troubleshoot a TCP/IP Network Using a Ping Utility

Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request packet to the designated device. The device then responds with an echo reply. You can

Troubleshooting

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Contents August 2013 East Plumeria Drive San Jose, CA USARevision History Contents Appendix a Supplemental Information Connecting to the Internet Gateway Front Panel DescriptionSecurity, see the Use Push N Connect WPS Wireless Setup on Gateway Rear Panel Gateway rear panelWireless Performance and Gateway Location LabelLog In to Your Gateway  To log in to the gatewayView Basic Settings  To view or configure basic settingsConfiguring Your Wireless Network Set Up Your Wireless Network  To view or configure the wireless settingsNetgear Docsis 3.0 N450 Wi-Fi Data Gateway Use Push N Connect WPS Wireless Setup Netgear Docsis 3.0 N450 Wi-Fi Data Gateway Add a Client Using a PIN  To add a wireless device to your gateway using a PINSet Up Wi-Fi Multimedia  To set up Wi-Fi MultimediaChange the Password  To change the passwordPage Filtering Content View Denial of Service DoS Attack Logs  To receive notification of attacks by emailClick Remove Keyword  To block access to certain domains Limit Internet Site Access To block access to sites containing certain words Allow Unrestricted Access Disable Gateway FeaturesFeature Description  To disable specific web features To disable specific NAT ALG Status features Netgear Docsis 3.0 N450 Wi-Fi Data Gateway Maintaining Your Network Modem field Description View the Gateway Status To view the gateway status View the Connection Status Back Up and Restore Your Settings To view the gateway’s initialization procedure View the Event Log  To back up the settings To restore the backup settings  To run a ping test Run the Diagnostic Utilities To view the event log Click Start Test Traceroute Utility  To run a traceroute testAdvanced Settings Advanced Wireless Settings Description Advanced Wireless Settings To configure advanced wireless settings MAC Filtering  To stop blocking a computer  To remove a computer from the list To delete a device from the IP Filter List  To set up IP filteringIP Filtering Port Forwarding  To configure port blockingPort Blocking Netgear Docsis 3.0 N450 Wi-Fi Data Gateway  To configure port triggering Port TriggeringSelect the Respond to Ping on WAN Port check box  To set up a DMZ hostDMZ Host LAN IP Setup  To configure LAN IP settings To reserve an IP address for Dhcp LAN SwitchReserve an IP Address for Dhcp Use Click Delete To disable a LAN port Configure Universal Plug and Play UPnP To configure the switch ports  To configure UPnP To enable NTP Set Networking ProtocolsRemove USB Devices Enable Network Address Translation To disable NAT  To remove a USB deviceTroubleshooting See Troubleshoot a TCP/IP Network Using a Ping Utility onLED Behavior Action Basic FunctionsConnect to the Gateway’s Main Menu Troubleshoot a TCP/IP Network Using a Ping Utility Troubleshoot the ISP ConnectionTest the LAN Path to Your Gateway PingNetgear Docsis 3.0 N450 Wi-Fi Data Gateway Supplemental Information Factory Default Settings Feature Parameter DefaultTechnical Specifications Component SpecificationNetgear Docsis 3.0 N450 Wi-Fi Data Gateway Notification of Compliance Regulatory Compliance InformationFCC Caution Avertissement
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