5  Select both Obtain an IP address automatically and Obtain DNS server address 
automatically in the Internet Protocol (TCP/IP) Properties window, and then 
click OK. 
6  Click Yes to restart your computer when the Local Network window opens. The 
computer restarts. The TCP/IP protocol is now configured on your PC, and your 
Ethernet devices are ready for use. 
7  Try to access the Internet. If you cannot access the Internet, contact your service 
provider for further assistance. 
 
Configuring TCP/IP on Macintosh Systems 
1  Click the Apple icon in the upper-left corner of the Finder. Scroll down to 
Control Panels, and then click TCP/IP. 
2  Click Edit on the Finder at the top of the page. Scroll down to the bottom of the 
menu, and then click User Mode. 
3  Click Advanced in the User Mode window, and then click OK. 
4  Click the Up/Down selector arrows located to the right of the Connect Via 
section of the TCP/IP window, and then click Using DHCP Server. 
5  Click Options in the TCP/IP window, and then click Active in the TCP/IP 
Options window. 
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. 
 
Q. How Do I Renew the IP Address on My PC? 
A. If your PC cannot access the Internet after the residential gateway 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.