Strange connection problem WRT54GL

Discussion in 'Cisco/Linksys Wireless Routers' started by Riton LeGrand, Dec 12, 2006.

  1. Riton LeGrand

    Riton LeGrand LI Guru Member

    I have bought a new v1.1 wrt54GL router. I wanted to connect this to 2 PC's in a remote spot via one cable, switch and 2 short cables.

    I found out that this connection through a 10/100Mbit auto negotiation switch did not work, no ping, no dhcp.
    Direct connection to 1 PC via the long cable, no problem, connection 100 Mbit.
    Using a 10Mbit old ethernet hub everything works fine.
    Tried another switch from a different brand (10/100) no connection again.

    Can anyone help me?
    Also after installing dd-wrt latest version same results.

    I haven't got a clue.:confused:
  2. ifican

    ifican Network Guru Member

    The only thing that makes sense is none of the devices you used has an mdix port. Without an mdix port you would need to run a crossover cable from the GL to the switch. In the instance where you used the hub and or connected directly to the computer you need a straight-thru cable and hence why it works. So to fix, use a crossover or see if either one of your switches has a button or port that has mdix capability and it should work just fine connected just the way you want.
  3. Riton LeGrand

    Riton LeGrand LI Guru Member

    The switch is a Topcom switch and on the website it says its autosensing and auto adjusting for crossover cable.

    The new 10/100 Edimax switch i tried had the same features.

    Anyone has another solution ?

  4. NateHoy

    NateHoy Network Guru Member

    Short Ethernet cables are simply sometimes a problem. I've heard of similar issues, with people using short cables and having connection problems that mysteriously go away with a longer cable. This is especially true of WAN ports for some reason that I cannot understand.

    It may have something to do with timing, or a lack of signal loss over the short cable. Fortunately, there is a quick (if not entirely aesthetically pleasing sometimes) fix. Use a longer cable. ;)
  5. ifican

    ifican Network Guru Member

    Well get a crossover cable and test the functionality of the "autosensing". I am still leaniing on it being a cabling issue. I too have heard of reports of folks having trouble with short cables, however i think that is more of a not made correctly issue. I make all my own cables and cut them to fit at the length i need them. I have many right at 6 inches with no issues at all connecting device to device.

    I did a couple quick checkes, the topcom says it does but you know how i feel about that,

    The edimax only shows auto-negotiation not autosensing, at least none of the ones i could find.
  6. HennieM

    HennieM Network Guru Member

    Just checking: Are you running LAN port to LAN port? No fancy QoS or anything like that on your hardware, specifically the 10/100 switches?

    Also, are you sure your short UTP cables are OK? Swap out and try other short cables maybe?

    Check if you get the link LEDs on the switch.
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