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WRT54G / Connect to Internet Fails / Wifi AND wired

Discussion in 'Cisco/Linksys Wireless Routers' started by CharlieJ, Apr 3, 2007.

  1. CharlieJ

    CharlieJ LI Guru Member

    Trying to help out my church with some wifi access. PLEASE give me a minute of your time and some advice...

    ISP Info
    ISP uses DSL
    IP range = 192.168.1.x
    DNS is different
    Gateway is 192.168.1.1 (or maybe 192.168.1.10)

    Test PCs
    Toshiba 2.0GHz laptop / Win XP Pro SP2 / USR Wifi PCMCIA card
    Custom-built 1.7GHz desktop / Win XP Pro SP2 / Integrated Intel NIC

    PROBLEM :confused:
    Of course, the default setup for the WRT54G v6 (stock; out of the box) is to use the IP range 192.168.1.x. As such, simply attaching the router to the network, the desktop to the router and using wifi from the laptop, I get NO connection to the Internet, etc. I'm no expert on these things, BUT I think the reason is that the ISP and the router are both trying to use the same IP range. So... I tried changing settings to get the laptop (via wifi) and PC (via wired) to connect to the router and then out to the Internet.
    a) Setup the router to use DHCP to assign IPs. Then, set the PCs to use DHCP for NIC cfg. NO CONNECTION.
    b) Changed IP range in router to 192.168.2.x. Left PCs setup per (a). NO CONNECTION.
    c) Left router cfg'd as (b), but statically matching "range" assigned IPs in PCs. NO CONNECTION.
    d) Switched and swapped everything around to try all variances from above. NO CONNECTION.

    During ONE of these change-a-roos, I was able to ping the router and the DNS server from the laptop (didn't try using the PC to ping). However, I couldn't get out passed the router using Firefox or IE. Also, couldn't ping yahoo.com by name/IP either.

    Just for a moment, I turned off the firewall on the laptop and PC. NO CONNECTION.

    LAPTOP: I use the laptop at work and home and on the road. It works fine with wifi card or wired connection = ALWAYS.
    PC: Remove the router from the equation and reboot the PC. Connect to the Internet without fail.

    Therefore, the problem seems to be the WRT54G. I returned it to factory defaults a couple of times, but that didn't help.

    I would appreciate ANY help getting this going. THANKS!
     
  2. ifican

    ifican Network Guru Member

    Yes you are correct that you have to have different ip ranges on either side of your router. You state you have dsl so you are going to have to setup your wrt to run dsl connection. On the wan settings you should have an option to choose for pppoe (assuming that is what your dsl connection uses). Input all relevant information and it should connect, then your pc, wireless or wired should beable to connect to your wrt and then out to the internet.

    From the above when you did B, most probably your machines ip's did not reset so they still had the old 192.168.1.x ips and its why it didnt work.

    C mostlikely pinged your router but had no internet because you didnt use your isp dns.

    Make sure you have the wrt set to 192.168.2.x (will work just fine), make sure you have your dsl connection set properly on the wan connection and make sure you pc's are getting a 192.168.2.x ip. At this point you should beable to access the wrt, if the internet still does not work. Go to the status page of the wrt and see if it shows you connected on the wan side. If not then thats your problem you have to get right. Ill leave you with that for now, report back if your still having problems and we can go from there.
     
  3. CharlieJ

    CharlieJ LI Guru Member

    Ifican,
    THANKS for your advice. I'm heading to the church tomorrow afternoon. I'll let you know the outcome Thursday morning.
     

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