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2 Wireless routers

Discussion in 'Tomato Firmware' started by nsumner, Mar 2, 2008.

  1. nsumner

    nsumner LI Guru Member

    I know this is a really silly question but...

    I currently have 2 wireless routers that work very nicely together to provide me with great coverage. They are currently connected using WDS and all is good in the world... Except speed of course.

    I am doing some work so that I can easily run CAT6 to almost any room in my house and therefore can (and will) connect up my routers on a Ethernet run. How do I than get the 2 routers playing nicely together not using WDS?

    Again only 1 has the actual internet connection (PPPoE).
  2. m078

    m078 LI Guru Member

    Presumably you have each configured as WDS+AP today?
    You just need to configure each of them AP, unless I misunderstood what you are trying to do.
  3. nsumner

    nsumner LI Guru Member

    If they are each set to AP what will they hand off the connection if needed?
  4. m078

    m078 LI Guru Member

    Yes, if it works OK with WDS, then it should work just the same with a wired connection.
    (I'm assuming you are running Tomato, of course)
  5. HennieM

    HennieM Network Guru Member

    One big difference: While on WDS your 2 routers are on the same channel. Once each router is connected by wire to your backbone net, they should be on different channels spaced at least 4 apart (like channel 1 and channel 6). The SSID and all other settings remain the same.
  6. m078

    m078 LI Guru Member


    I have 2 APs wired together, both on channel 11, with no problem at all.
  7. HennieM

    HennieM Network Guru Member

    That will work OK if:
    1) Your 2 APs are farish apart, and
    2) Your clients are always fairly close to one of the APs, or
    3) You have only 1 wireless client connected at a time.

    Say you have 2 clients and 2 APs on channel 11. ClientA is connected to AP1 and ClientB is connected to AP2. Both clients are active. Now the "talk" from ClientA/AP1 is on the same frequency as the "talk" from ClientB/AP2, and thus creates noise for the ClientB/AP2 link. Same for the ClientB/AP1 link.

    If the Client/AP pairs are close to each other relative how far they are from the other Client/AP pair, you'll still get a fairly good signal to noise ratio, and thus a good/fast connection. However, when you walk outside (or across the street or whatever) with your laptop (client), your laptop will very soon start seeing everything from the 2 APs as noise, as it cannot determine which "talk" is directed at it. The signal to noise ratio pretty soon gets worse than the receive sensitivities of either the client or the AP, and you lose connection.

    If the 2 APs were on different frequencies/channels, the client tunes its "radio ear" to only that frequency, no matter how much talk is going with the other AP.

    It's like your wife and your kid is talking to you at the same time - when close to one, you hear that one good, but as you move further you can't hear either because the one is noise to the other ;-) Of course, if the wife is a humming bird, and the kid impersonates Zchwarzenegger, you'll hear both good, depending on which frequency (channel) you tune your ear to.
  8. m078

    m078 LI Guru Member

    Interesting. I guess that's a pretty strong reason against multiple WDS+AP then, as you have to have the same channel for WDS.
  9. HennieM

    HennieM Network Guru Member

    WDS has sort of got an answer for that it seems - it uses a methodology where only one WDS node talks to another WDS node or a client at a time. That's why your speed goes down pretty quickly with multiple WDS links. However, I think the noise factor would still be pretty prominent in adjacent WDS nodes with multiple clients.

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