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Networking Newbie in need of help

Discussion in 'Networking Issues' started by mjh011, Nov 30, 2005.

  1. mjh011

    mjh011 Guest

    I'm currently trying to set up a network with a wired PC running winXP and a wireless laptop running winXP as well. I have a Linksys WRT54G router and my problem is that once I turn on my laptop, my PC is unable to use the internet, and vice versa. My connection seems to flip-flop between the two machines instead of being shared, so my roommate and I cannot access the internet at the same time. Any help/suggestions would be greatly appreciated.
  2. OldeBill

    OldeBill Network Guru Member

    A couple of things to check

    OK, while we have some symptoms here there's not a lot to pointing at any particular problem. So, I'm going to take you at your word as a newbie and as for your indulgence as I'm *not* trying to insult your intelligence.

    1) Please confirm that the WAN port of the WRT54G is connected to your Internet connection. It's the leftmost port as you look at the backpanel and it's set off a bit from the other 4 ports.

    If one of your LAN ports is connected to the Internet, it may be that your ISP is only giving you a single IP address and hence only allowing one device access to the Internet.

    2) Log into the router. Open your browser and type and hit ENTER. You should see the router login screen. Presuming no defaults have been changed leave the User Name field empty and type admin as the password.

    The "Basic Setup" tab should have the DHCP server turned ON in the Network Setting portion. Also, while your on the page, check your Internet ssetings and make sure that it's set up for PPoE/DHCP/Static or whatever. PPoE is typical for DSL, DHCP for Cable modem or institutional LAN and static is kinda unusual.

    3) Now check your individual PCs. Open "Network Connections" icon with Windows XP or "Network and Dial-up Connections" folder for Windows 2000. Right click and get the "Properties" for the network connection.

    Under the "General" tab, scroll down and highlight "Internet Protocol (TCP/IP)" and click on the "Properties" button. If "Use the following IP address" is checked, write down the address and subnet mask. You may need this to put the configuration back later.

    Otherwise make sure "Obtain and IP address automatically" is checked. Now make sure that "Obtain DNS server address automatically" is also checked.

    Actually, if both PCs have static IP addresses i.e., the same "Use the following IP address" like or, finish reconfiguring both PCs with this step and then go back into the router and set it up for a static IP address with the address you wrote down, same for the "Subnet Mask" - something like or

    Make sure both PCs are set up to automatically get IP addresses.

    If you can't get both machines to share an internet connection through the router now, then I'm stumped without knowing more. Trouble is, it's not obvious to me what more is needed.

    Good luck,

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