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Request help in getting WRT54G to "see" the Internet

Discussion in 'Cisco/Linksys Wireless Routers' started by Muircheartach, Oct 4, 2006.

  1. Muircheartach

    Muircheartach LI Guru Member

    Hi all,

    My question is (I hope) pretty simple - I would like to switch my WiFi routers from SMC to Linksys, and I bought two WRT54G v.3 units that look like they work great - at least I can get into the HTML configuration pages and see that everything looks good.

    However, even though everything has been reset to factory default and I'm using DHCP, no WiFi'd computers can connect to the Internet (I've done the "release/renew", but nothing has worked so far). I have not had to input any data into any SMC router concerning my ISP provider (through DSL via SBCGlobal), and I don't see anything in Linksys's configuration/installation data sheet that says I have to do anything different.

    Can someone please let me know what has to be done different on the WRT54G routers than on my SMC ones?
  2. Toxic

    Toxic Administrator Staff Member

  3. ifican

    ifican Network Guru Member

    Sunnyvale eh? I will be up that way this weekend, but thats besides the point. DSL is generally pppoe and as Toxic as mentioned there should be a setup scenario in the installation guide to show you how to connect. If after going over everything you still have issues please post and I am sure someone will have something constructive to say.
  4. Muircheartach

    Muircheartach LI Guru Member


    Yes, I even had a person from AT&T spend 40 minutes on the phone with me yesterday and we went through the QI guide from start to finish - with no luck.
  5. ifican

    ifican Network Guru Member

    Do wired machines connect ok?
  6. HennieM

    HennieM Network Guru Member

    1) What DSL modem are you using, and how is it driven?

    1.1) If the modem is intelligent, i.e. a router/modem, and the modem is not set to bridged mode (you enter your ISP username/password and other stuff on the modem), then:

    1.1.1) the modem should be connected to a LAN port of your WRT (not the WAN port), and WRT#2 should/could be connected to another LAN port of WRT#1, i.e. all connections between modem and WRTs should be via LAN ports.

    1.1.2) either the modem OR one of your WRTs should run a DHCP server - i.e. only ONE DHCP server should run on your network.
    If the router/modem does the DHCP, it's probably the safest, as you are then sure that all your devices and clients are on the same subnet, so make sure the DHCP servers are turned off on the routers, and the routers have IP addresses on the same subnet as your modem. (SMC modem/routers default to => subnet, while linksys routers default to => subnet, while Netgear routers default to => subnet 192.168.0/24).

    1.2) If your modem is dumb, or IS running in bridged mode, then:

    1.2.1) Your modem must be connected to your WRT#1's WAN port.

    1.2.2) It would be best to have WRT#1 do DHCP, so turn the DHCP server on WRT#2 off.

    1.2.3) WRT#1 LAN port connect to WRT#2 LAN port.

    1.2.4) If you really did not have to enter any parameters on your SMC wireless device driving the modem previously, it might be that your ISP gives your internet connecting device an address via DHCP, and would then most likely mean that your router's MAC address has to be registered with the ISP.

    And......that's all for now folks.... from sunny South Africa...
  7. Muircheartach

    Muircheartach LI Guru Member

    Getting my WRT54G to see the Internet

    Hello and thanks to HennieM!!

    Following the advise concerning plugging the Ethernet cable into a LAN port and not the WAN port helped do the trick! After I set everything to DHCP on my first WRT, and deleted the domain name (not quite sure why that helped...), I was able to see the Internet!

    I surely would never have guessed this one - and I still don't understand why any of the SMC WiFi routers worked with the cable from the DSL modem plugged into the WAN port, but it doesn't make a difference now!!

    I will document this as well as save the information HennieM sent - I have a real difficulty believing that I'm the only one experiencing this - perhaps this solution should be in the FAQs?

    Thanks loads and best cheers!
  8. HennieM

    HennieM Network Guru Member

    Glad you got sorted Robbie.

    Thing to remember is WAN does not stand for "Wide Area Network" as the experts would have you believe - but rather "With Another subNet", meaning that you always stay on anything LAN, but if you want to access another network on a different subnet you start thinking WAN ;-)

    My definition of WAN sounds rather lame, maybe somebody else can come up with something better...

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