Tomatoe RAF & a Bonded Modem?

Discussion in 'Tomato Firmware' started by Ronnie_USA, Dec 26, 2013.

  1. Ronnie_USA

    Ronnie_USA Networkin' Nut Member

    I have a bonded DSL Modem, and a E3000 running Tomato RAF Firmware v1.28.9013 MIPSR2-RAF-V1.2x K26 USB?
    I would like to put the modem into to the bridged mode, and let the router do the login.
    The Modem is a Comtrend NL-3100u.
    Here is a pic of the Wide Area Network (WAN) Service Setup page.

    Attached Files:

  2. koitsu

    koitsu Network Guru Member

    Just a recommendation: let the modem do the PPPoE authentication and the PPPoE encapsulation/decap. The modem itself is what your ISP recommended and is guaranteed to work with their PPPoE setup on their remote end (could be DSLAM equipment such as a Redback). There is no guarantee the PPPoE implementation within Tomato will work properly with your ISP, and this has been confirmed time and time again by users here. There is no "standard" with PPPoE, I'm sorry to say.

    When I was an AT&T/SBC customer, as well as a Covad customer (different equipment), I simply had the Speedstream DSL modem handle the authentication and PPPoE bits, and would blindly pass on the delegated DHCP IP (WAN IP) from the remote end to my router (i.e. my router was set to get an IP via DHCP and it'd Just Work(tm)). I had absolutely zero problems using this mode -- everything always worked. I believe this was called "bridge mode" but obviously wasn't a full layer 2 bridge because DHCP (which uses layer 3 protocols) was still being done between the modem and the router. But the DSL modem itself was what was doing the PPPoE authentication *as well* as the encap.

    If you're trying to debug ADSL signal level problems, however, the aforementioned setup is a pain because most modems will not let you access their administrative page when operating in "bridge mode". So when I had signal level issues (due to SBC one day changing the electrical topology of our area of the city -- I went from being 7000 feet from the CO to 13,000 feet in a day), getting those stats became a real PITA. That's the only downside.
  3. Ronnie_USA

    Ronnie_USA Networkin' Nut Member

    Thank You, I look into it more after I posted the question, but wanted to see what others thought.
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