Ethernet LAN connection problem

By decnug ยท 16 replies
Mar 20, 2005
  1. Hi,
    My housemate and I recently bought two new pcs of the same type, both have VIA Rhine III Fast Ethernet Adapters. When we try to connect both pcs with a cable, the connection appears as not connected ("A network cable is unplugged").
    I've tried the same cable with an older PC and my new PC, and it connects okay, also my friends new PC connects okay with the older PC.
    I'd be grateful if anyone can offer aby advice on what we may be doing wrong, or how we should go about setting uo our LAN.
  2. RealBlackStuff

    RealBlackStuff TS Rookie Posts: 6,503

    Depending on how you want to connect to the other PC, have a look here for when you use a router, look at the attachment here:
    The above requires straight Cat5 network cables

    Simple Networking of 2 PCs
    This ones needs a crossover-cable.
  3. decnug

    decnug TS Rookie Topic Starter

    Thanks for that. We have tried changing the settings and ran the setup wizerd many times but no luck.
    I've been searching for the past few days for a solution and the only one I can find is to connect them using a router/hub/switch, so we will try this.
    What I can't understand is why it connects okay if we connect the cable to an older PC an either of the new PCs, but if we connect both new PCs, it just says the cable is disconnected. Is there something in the NICs that stops them from recognising if a cable is connected?
  4. dgower2

    dgower2 TS Maniac Posts: 238

    Maybe both PCs have the same IP address configured since it would be an autoconfigure address. Try manually setting one the the IP addresses different (only the last octet Another thing to consider is that if they are the same computer, could the MAC address on the two NICs be the same? If so, you'd probably have to change it (if that's possible - it might be in the hardware).
  5. REB_ElMagnifico

    REB_ElMagnifico TS Rookie

    That is weird that the two old computers connected fine...were you able to transfer files between the 2? In order to connect 2 computers together you have to have a crossover cable. And if you are going to manually configure the ip addresses isn't going to do anything for you. Try on one computer and on the other computer. And don't worry about the mac addresses, they won't be the same. The only repeated mac address you will find is from NICs that are really old and the likelyhood of having an old NIC with the same mac address as a new NIC is like 1 in a billion. If your are planning to add more computers later or connect them to the internet through a cable modem or something similar I would definetly get a router. However if you just want the extent of your network to be those 2 computers then using a crossover cable to directly connect the computers would be the way to go.
  6. RealBlackStuff

    RealBlackStuff TS Rookie Posts: 6,503

    On your home-network, NEVER change the Subnet Mask: this must always be and nothing else.
    Check that all PCs are in the same WORKGROUP.
  7. Ph30nIX

    Ph30nIX TS Rookie Posts: 243

    not sure if this is relevant or true,
    but i heard that sharing an internet connection between 2
    computers with a crossover cable is "illegal" or not allowed.
    Is this true or something? just wondering, thanks ph30nix
  8. decnug

    decnug TS Rookie Topic Starter

    Thanks again. We'll try the ip addresses again just to make sure. Also, as we have tried the network setup wizard a few times, could this have messed up any of our settings. Is it possible to get these settings back to a default?
  9. stevco

    stevco TS Rookie

    internet or LAN problem

    I made a format on my PC, put all drivers, it's everything ok, works fine. Then i made Internet connection (i have 2 pc, connected together through splitter). After 15 min of work in internet suddenly this window appears: (first it was 'Send/Don't send window, i clicked to view more information about the problem and it's this) FIRST IMAGE

    Then i clicked on To view tech inform. About this error, and appeared this: SECOND IMAGE

    And i searched for the files shown on the 2nd window and they are - THIRD IMAGE

    And several minutes after my internet connection is blocking, the pc is not working well, and the sound is blocking too.
  10. adweston

    adweston Banned Posts: 242

    It's because the old computers probably had the auto-negotiate capabilities. Try a crossover cable. The other thing is to make sure both have fixed IP addresses, as opposed to DHCP (which won't work).
  11. pyromaster114

    pyromaster114 TS Guru Posts: 246

    1) Try a Crossover cable, because you're going between 2 similar devices. (Computer to computer, instead of computer to switch or hub.)
    2) Because you won't have a DHCP server, you'll have to set your IP addresses manually.
    Try these:
    Default Gateway: (Leave blank, cause it shouldn't be needed, if that doesn't work, try putting the other PCs IP in here, sometimes windows likes that, even though that doesn't make that much sense)
    DNS server: (Leave blank, cause you shouldn't need it for transfer between 2 PCs over the LAN)

    Default Gateway: (Leave blank, cause it shouldn't be needed, if that doesn't work, try putting the other PCs IP in here, sometimes windows likes that, even though that doesn't make that much sense)
    DNS server: (Leave blank, cause you shouldn't need it for transfer between 2 PCs over the LAN)
  12. stevco

    stevco TS Rookie

    I have crossover cables, PC's are connected trough splitter, i tried your suggestion, but it didn't help, thank you anyway for your help.
  13. eyemfedup2

    eyemfedup2 TS Enthusiast Posts: 69

    cant aquire network address

    just put togeather a comp with an asus m2n-mx se plus mobo
    working fine and all of a sudden cant get on internet
    cant aquire network address
    did the internet options set up new connectin also chose lan and checked auto detect
    good cables
    reset modem router and computer
    cant figure this one out
    please help
    ps 4 other computers working fine
  14. stevco

    stevco TS Rookie

    I found a solution, if someone have that kind of problem i can help him, it's easy.

    But i have another problem now. Because i have 2 computers connected, i mad Share on D: drive on both computers, made a workgroup, i have internet but in my network place there aren't the shared drives, and i can't go from one comp. to another and transfer files.. what would be the problem and how to fix it.
    thank you.
  15. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

  16. eyemfedup2

    eyemfedup2 TS Enthusiast Posts: 69

    then please help while i still have some hair left lol

    is there anybody out there?

    wird thing is it wont let me renw ip
  17. kimsland

    kimsland Ex-TechSpotter Posts: 14,523

    I think it would be best that everyone in need of help, creates their own unique New Thread
    And not reply to this March 2005 thread any longer.
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