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WRT54GC not connecting to the Internet...

Discussion in 'Cisco/Linksys Wireless Routers' started by lionwilson, Jan 23, 2006.

  1. lionwilson

    lionwilson Guest

    I bought a Linksys WRT54GC (the compact router) about five months ago to use for wireless Internet access in my dorm room at college. It worked great for me... had full access, great speeds, good wireless and everything. No problems setting it up or anything. I had one wired desktop hooked up to it as well as two laptops wirelessly (me and my roomate).

    Well about two days ago I moved dorm rooms and moved the router too. I hooked it up to the new ethernet from the wall and before I could access the settings to update all the settings and change the wirless SSID, a message popped up in my systray from the network connections saying something like, "Warning! This computer has an IP address conflict with another one on the network. Please contact your network administrator". And now, I can't access the Internet through the router.

    I can access the settings page by going to the gateway IP, and I can access the Internet fine by direct connection. This is odd to me because my friend (who was previously in that same room) had the same router with the same configuration hooked up to that same ethernet and it worked fine both wired and wirelessly. I've reset the router, done power cycling on it, did a complete factory restore, everything I can think of. Nothing seems to work. I even went through the NetSet program from Linksys... it detects the router fine but always gets an error when it gets to the Internet connection part.

    My guess is something wrong with DNS, but I don't really have any basis for that. Again, I've used automatic DHCP config (which worked fine for the router in the old room and my friend's old one in this room) and even manually IP configuring it. I've updated the firmware and tried all kinds of stuff. No idea what to do at this point. Any ideas anyone? Thanks in advance.
  2. vincentfox

    vincentfox Network Guru Member

    And you have already asked your college IT helpdesk people for assistance? This seems like something specific to your network.
  3. hexo

    hexo Network Guru Member

    you probably need to change your dhcp ip range. just my thoughts.
  4. andybarker

    andybarker Network Guru Member

    I had a similar problem the other day. My desktop, which has a static DHCP address, kept complaining when I plugged in another PC to the network by saying there was an IP conflict just as you are getting (it is Windows telling you this, not some network admin). Both PCs were on DHCP, but the router seemed to be giving the new machine (very different MAC address, etc) the same IP as my desktop for some reason. Was only when I set my desktop PC to a new IP outside the DHCP issued range (in Windows) that the problem was resolved.

    So only thing I can suggest is to give your PCs fixed IPs (outside the range of the DHCP settings), rather than use DHCP (leave DHCP there for any machines that are temporarily added).

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