Cisco DPC3216 User Manual page 44

Chapter 4 Troubleshooting the Cable M odem
Note: Make sure that the Load only when needed option is unchecked.
6 Verify that the Use 802.3 option located in the upper-right corner of the TCP/IP
window is unchecked. If there is a check mark in the option, uncheck the option,
and then click Info in the lower-left corner.
7 Is there a Hardware Address listed in this window?

If yes, click OK. To close the TCP/IP Control Panel window, click File, and
then scroll down to click Close. You have completed this procedure.

If no, you must power off your Macintosh.
8 With the power off, simultaneously press and hold down the Command
(Apple), Option, P, and R keys on your keyboard. Keeping those keys pressed
down, power on your Macintosh but do not release these keys until you hear the
Apple chime at least three times, then release the keys and let the computer
restart.
9 When your computer fully reboots, repeat Steps 1 through 7 to verify that all
TCP/IP settings are correct. If your computer still does not have a Hardware
Address, contact your authorized Apple dealer or Apple technical support center
for further assistance.
How Do I Renew the IP Address on My PC?
If your PC cannot access the Internet after the cable modem is online, it is possible
that your PC did not renew its IP address. Follow the appropriate instructions in this
section for your operating system to renew the IP address on your PC.
Renew ing the IP Address on Window s 7 Sy stems
1 Click the Windows Start button.
2 Type cmd in the Search field. The cmd window appears.
3 Type ipconfig /renew and press Enter to renew the IP address of the computer.
Renew ing the IP Address on Window s XP Sy stems
1 Click Start, and then click Run. The Run window appears.
2 Type cmd in the Open field and click OK. A window with a command prompt
appears.
3 Type ipconfig /release at the C:/ prompt and press Enter. The system releases
the IP address.
4 Type ipconfig /renew at the C:/ prompt and press Enter. The system displays a
new IP address.
5 Click the X in the upper-right corner of the window to close the Command
Prompt window. You have completed this procedure.
Note: If you cannot access the Internet, contact your service provider for further
assistance.
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