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5 km WDS link with two WRT-54G and poor speed

Discussion in 'Networking Issues' started by bgonev, Oct 12, 2005.

  1. bgonev

    bgonev Network Guru Member

    I am using WRT-54g with combination of 19 dBi directional Yagi. Distance between two WRT is about 4-5km. Signal stenth that I get on both sides is about -62db. But the connection speed is 5 MB (transfer rate about 180-200KB). I think (also with my previous expirience) that this is low speed. Anyone have some expirience in such distances ? I expect to achieve min 36 Mbit with this signal stength.
  2. Toxic

    Toxic Administrator Staff Member

    WDS halves the bandwidth.

    a normal WRT54G should put out about 18-22Mbps. a GS with speedbooster would put out approx 28-32Mbs.

    your maximum suggested would be 1/2 of the 18/22 Mbps.

    but with bad signal strentgh this would be less again.

    try this command in telnet

    wl shortslot_override 0

    it may give you some speed gains but not much. also make sure frameburst is enabled.
  3. howardp6

    howardp6 Network Guru Member

  4. bgonev

    bgonev Network Guru Member

    What if I use AP <-> CLIENT mode ? I sopouse that then the bandwidts will not be halfed ? Anyway In Wireless status it says that Actual speed is 5 Mb/s ?

    Do you think that If I change WRTs with WAP54G setup in bridge mode, the situation will be better ? Once again I use 19 dBi Yagi on both points, distance is about 5km, and I want to achieve speed about 800kB/s - 1 MB/s (real troughput).
  5. howardp6

    howardp6 Network Guru Member

    You can try the WAP54G in bridge mode or as an access point client and not get your bandwidth cut in half. The WRT54G can be used as a normal router. The firmware version of the WAP54G should be a least 2.08. There are minimum firmware versions for your WRT54G of at least 2.07.
  6. bgonev

    bgonev Network Guru Member

    If I use AP <-> Client configuration with two WRT-54G, does then I get speed cut by half ?
  7. Toxic

    Toxic Administrator Staff Member

    afaik no it doesn't only WDS mode cuts bandwidth.
  8. howardp6

    howardp6 Network Guru Member

    I have had problems setting up access point client with Alchemy. There are problems with DHCP and DNS and the requirement that the LAN in client mode to be on a different subnet. I never tried Talisman.

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