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Help with configuring a WRTSL54GS to work behind another router.

Discussion in 'Cisco/Linksys Wireless Routers' started by ka9yhd, Feb 14, 2007.

  1. ka9yhd

    ka9yhd LI Guru Member

    Please bear with me for the rather long explaination of what and why I am doing this.

    I am having problems with the connection to my ISP going down randomly. When I had the "SL" connected to the modem and configured for PPPoE the Sl will not connect. If I connect a computer directly to the modem and configure the computer for PPPoE it connects.
    Last week a tech from my ISP came out and brought with him a Broadxent Brite Port 8120 ADSL Gateway. Which is a modem/ router that is configured to do the PPPoE negotiations. The Broadxent also has problems with random disconnects.

    I had configured the "SL" to work behind the Broadxent gateway by setting the "SL" to DHCP and changing the DHCP server from 192.168.1.1 to 192.168.0.1 it connects and I have access to the Internet.

    Now I have decided that I do not want to pay for that Broadxent gateway and I want to use the Zoom ADSL modem and my old wired router. Which is a spare PC with two ethernet cards in it and running a Linux firewall/ router application. This router works great and I have access to the Internet.
    The problem is that the "SL" will obtain an IP address from the wired router but I can not get a connection to the Internet with my laptop through the SL.

    How do I configure the WRTSL54GS to work as an access point?

    Relax.... I am in the process of switching ISP's because everytime that I contact them about the line going down, they blame it on the Linksys. Because the line works with a computer connected directly to the modem.
    Also I can get a wireless 10 megabit service for less then I am paying for their 1.5 meg/ 384k DSL line.
     
  2. eric_stewart

    eric_stewart Super Moderator Staff Member Member

    Turn off DHCP server on your router and connect any port on the built-in 4-port switch (vs. WAN) to the LAN side of your Linux firewall. Now when wireless workstations associate to your Linksys they will obtain their IP address from the Linux firewall.

    --------------------------------------------------------------------------------------
    Sidebar: PPPoE has always been an issue with the standard Linksys firmware, at least on the WRTxxx series That's why 3rd-party firmwares such as Thibor, Tomato and DD-WRT (among others) ditch Linksys' PPPoE module out-of-hand and substitute another.
    ---------------------------------------------------------------------------------------

    /Eric
     
  3. ka9yhd

    ka9yhd LI Guru Member

    Thank you that worked.
     

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