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nh1005 wired hub issues

Discussion in 'Networking Issues' started by Cooter77, Dec 19, 2007.

  1. Cooter77

    Cooter77 LI Guru Member

    I am trying to network 2 PC's together using linksys nh1005 5 port hub. The problem I get is when I turn both PC's on at the same time I get a IP address conflict. I have determined that my modem (At&t sbc yahoo dsl) is the problem because it is main IP address that both use. I have tried and tried to access the router using various IP addresses (I can access my modem at 192.168.0.1) but have had no luck. I read on the linksys site that the router may be 192.168.15.1, but that hasn't worked and neither has 192.168.1.1. I have also tried to apply a static IP address but to no avail. I think this is because I can't find the actual IP address that the router is on.

    Right now my IP address is 192.168.1.64 which is in the range that I need, but if I were to turn the other computer on I would get IP's in the 70.140.x.x range, which I have been told should be impossible.

    I called the ISP, and they told me that the only way they could continue to help me was for me to call the tech support help line, which costs money per call. I want to avoid this call because I am fairly competent in computer (I used to mess around in DOS all the time back in the day...) and am hoping to find someone to help via the internet.

    One last question, and this relates to the static IP's... Do you have to reboot the computer between assigning static IP's or not? I doubt this is the reason, but the simple answers are usually the correct ones....

    Thanks for your help.
     
  2. Cooter77

    Cooter77 LI Guru Member

    I tried some settings with the modem but nothing has worked so far. I tried bridging it, which is no good for the network. I do have another question... For a 2 PC network, would I use PPPoE on computer or on modem/router. From what I've read about PPPoE it really only is needed for corporations, so is there a need for PPPoE?
     
  3. Cooter77

    Cooter77 LI Guru Member

    I tried some settings with the modem but nothing has worked so far. I tried bridging it, which is no good for the network. I do have another question... For a 2 PC network, would I use PPPoE on computer or on modem/router. From what I've read about PPPoE it really only is needed for corporations, so is there a need for PPPoE?
     
  4. Cooter77

    Cooter77 LI Guru Member

    Bump... someone please help.
     
  5. Cooter77

    Cooter77 LI Guru Member

    Bump... please anyone....
     
  6. PeterT

    PeterT Network Guru Member

    Can you supply a bit more info... What type of Modem? Is it a combined Router / Modem or is it just a modem?
     
  7. Cooter77

    Cooter77 LI Guru Member

    It's not a combined router/modem. The modem is a SpeedStream 4100 Ethernet ADSL modem. Part number 060-d141-a12. I have the incoming DSL line connected to the in port, and an ethernet cable connected to the out port. The ethernet cable is plugged into the uplink port on the router next to port 5. Then I have 2 ethernet cables (1 plugged into port 1 of the hub and the other into port 3) which are in turn connected to their respective computer's 10/100 cards. I know I have it set up correctly because each computer individually can connect to the internet, but I get the IP conflict when both computers are turned on. In my research I have found that I get the conflict because the router isn't automatically assigning an IP address in the 192.168.x.x range when both are turned on. When both are turned on the IP's switch into the 7x.14x.x.x range. As of right now only one computer is turned on and this is what I get when I run CMD and type: ipconfig /all

    IP address: 192.168.1.64
    Subnet Mask: 255.255.0.0
    Default Gateway: 192.168.0.1
    DHCP server: 192.168.0.1
    DNS server: 192.168.0.1

    Could it be that the subnet is 255.255.0.0 instead of 255.255.255.0 like I have seen before, or does that make no difference? I'm hoping that I can somehow access the router, but I need to know the exact IP to type in to do that. Is there something that I can change in the modem config that might help?
     
  8. PeterT

    PeterT Network Guru Member

    I believe the problem is that you have a HUB and NOT a Router... A hub just allows multiple ethernet devices to connect to it. It does NOT assign IP addresses to the devices. Most hubs have no "smarts" to them at all; a data packet sent by a device attached to one port is "echoed" (not the correct term I know) to devices on all other ports.

    A switch is a smarter hub. it will "direct" a data packet to only the port that the correct device is attached to.

    A Home Router on the other hand performs far more functions:
    1 - Handles the communications with the modem (ie in a DSL environment, it supplies the required userid / password to the modem)
    2 - The router is the only device to actually get an IP address from your ISP
    3 - The router assigns IP addresses to your computers
    4 - Many Home Routers also contain an integrated SWITCH; if it does not, you would connect a switch or hub (ie the NH1005) to the router.
     
  9. Cooter77

    Cooter77 LI Guru Member

    That actually makes a lot of sense now. I assumed that a hub and router were the same thing. Is there any way to solve this short of buying an actual router? Can I configure the hub in any way? Is there some way to make a static IP on each computer and have the internet still work? So far I have tried assigning static IP's to each computer but the internet won't work then.

    Thanks for the help so far.
     
  10. PeterT

    PeterT Network Guru Member

    One option would be the following...

    Assume one computer has two network cards in it.

    On that computer, attach one NIC to the Modem, and the second NIC to the hub.

    The second computer only attaches to the hub.

    On the first computer you configure it to "Share it's Internet Connection".

    As long as the first computer is on and attached to the Internet, the second machine will then be able to access the Internet through it.

    http://www.microsoft.com/windowsxp/using/networking/setup/default.mspx might have some helpful guides to all of this.
     
  11. Cooter77

    Cooter77 LI Guru Member

    Thanks for your help, but I figured it out. I saw on the modem config page (192.168.0.1) that there were 2 DNS server numbers. I used those in my static IP config's and it worked. That was my main problem when I tried to assign static IP's earlier, that I didn't know the DNS numbers from the router (what I assumed was the router).

    Thanks again, and Happy Holidays!
     

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