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Setting up WDS

Discussion in 'Tomato Firmware' started by Devotedfollower, Jul 9, 2010.

  1. Devotedfollower

    Devotedfollower LI Guru Member

    Hello all,

    After all the help in the other post, here is my setup, which unfortunately has problems:

    cable modem -- |wired| -- WRT150Nv3 (/w teddybear 2.6R2 std. ) ))) |wireless| ((((( WRT54Gv3 (w/ teddybear 2.6R1 std.)

    The 150N is in auto mode for channel (including N) and set as an access point + WDS. Same settings for the WRT54Gv3 although it isn't capable of N.
    Besides this issue I have been able to get them to show in each other's Status->Device List as wds0.1 along with good signal and correct corresponding MAC addresses.

    I have moved the units apart from each other and have used my iPhone to make sure that I can connect to the wrt54Gv3. I tested this by plugging and unplugging the wrt54Gv3 and looking at signal strength on the iPhone wifi page.

    So the problem seems to be, that IPs aren't getting assigned from the 150N to the 54g's; the 54g may be block incoming/not sending the 150N DHCP requests? If I plug into the unit directly and manually assign my IP to a valid IP, then I can connect to the 54g's admin page at 192.168.1.2

    I used http://www.polarcloud.com/tomatofaq#how_do_i_use_wds as a tutorial. I changed the security to WPA2 Personal with TKIP+AES to just AES.

    Any help would be greatly appreciated!
     
  2. Dagger

    Dagger Networkin' Nut Member

    As a test, have you tried it with WEP or no security? Just to see if WPA/2 is the problem?
     
  3. BeHappy

    BeHappy Network Guru Member

    Drop the auto channel mode, it will help.
     
  4. Devotedfollower

    Devotedfollower LI Guru Member

    haven't tried with no security...good call and will try this! Both are on channel one right now -- auto channel isn't selected.
     
  5. LanceMoreland

    LanceMoreland Network Guru Member

    A couple of things about WDS that I have discovered that you may find helpful. WDS does not work with WPA2. WPA Personal with AES however works fine. If you are using the same router as an access point and WDS you will loose roughly half of your band width. Since the WRT54G routers are cheap, I bought a couple of them and plug them into the access point via cat 5 and set them to WDS only. This will give you full band width because wirelessly the WDS units are only talking to each other and the AP is talking to the client. Another neat trick is that you can improve signal by setting them to channel 14 which is not used in most countries and in my case provides the best signal. Make sure you have them set to G Only. Also, turning up the transmit power on both units is very effective because they both are capable increasing signal strength and benefit, unlike your wireless client which can not increase signal strength and only takes advantage of it on the receiving side. I have also found that for whatever reason on dedicated WDS units enabling Afterburner degrades bandwidth severely, I am not sure why. Enabling Frame bursts however increases bandwidth by a small amount. I have a 25 Mbps Internet connection and on a wired machine I can take all of it in. On a wireless machine going through my WDS routers, I can receive up to 24 Mbps and I think that is about as good as it gets.

    Edit: I have found since this post that the reason Afterburner did not work for me is that only one of my WDS units was Afterburner capable. You can type "wl cap" at the command line and if Afterburner is listed then your routers can make use of it. Having 5 WRT54G's of various flavors I was able to find two that were Afterburner capable and set them up as the dedicated WDS units and I am making use of the Afterburner feature with WDS.
     
  6. Kiwi8

    Kiwi8 LI Guru Member

    Channel 14 only supports B mode, not G mode.
     
  7. LanceMoreland

    LanceMoreland Network Guru Member

    It supports G mode just fine. I am on it right now. Now whether you can find a wireless card for your client that supports channel 14 G mode is another matter, but WRT54G to WRT54G works just fine in G mode on channel 14.
     
  8. Kiwi8

    Kiwi8 LI Guru Member

    I see. So u have to select Japan as the region rite?
     
  9. LanceMoreland

    LanceMoreland Network Guru Member

    Correct. That is the default in the latest versions of Tomato.
     
  10. Kiwi8

    Kiwi8 LI Guru Member

    Btw thanks for the great tip.

    I also used to set region as Japan and use channel 14, but stopped doing so after reading that it only supported Wireless B mode. But what u wrote is correct, that the routers themselves are able to communicate in Wireless G mode, which gives me a throughput of 27mbps (indeed Wireless G). Channel 14 is indeed the least crowded in my neighbourhood, hence I will set it back to Channel 14 due to the many connection/throughput issues I face when using other channels. :redface:
     
  11. LanceMoreland

    LanceMoreland Network Guru Member

    I have found since my last post that the reason Afterburner did not work for me is that only one of my WDS units was Afterburner capable. You can type "wl cap" at the command line and if Afterburner is listed then your routers can make use of it. Having 5 WRT54G's of various flavors I was able to find two that were Afterburner capable and set them up as the dedicated WDS units and I am making use of the Afterburner feature with WDS.
     

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