Troubleshooting
76
Wireless Cable Gateway CG3300CMR
Note:
If the IP address of your computer is shown as 169.254.x.x:
Recent versions of Windows and Mac OS generate and assign an IP
address when 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 the IP address of your gateway has been changed and you do not know the current IP
address, clear the configuration of the gateway to its factory defaults. This operation sets
the IP address of the gateway to 192.168.1.1. This procedure is explained in
Factory
Default Settings
on page 79.
•
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
admin
is lower-case (Caps Lock is off). The default password of
password
.
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 have occurred, but
the web browser might be caching the old configuration.
Troubleshoot the ISP Connection
When your gateway is unable to access the Internet and your Internet LED is on, register the
cable MAC address or device MAC address of your gateway with your cable service provider.
Additionally, your computer does not have the gateway that is 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.
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 easily
troubleshoot a TCP/IP network by using the ping utility in your computer or workstation.
Test the LAN Path to Your Gateway
You can use ping to verify that the LAN path to your gateway is set up correctly.
