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Speed over WDS

Discussion in 'Cisco/Linksys Wireless Routers' started by leonb, Jul 11, 2005.

  1. leonb

    leonb Network Guru Member

    I have a WDS setup using two WRT54G (v2.2) routers to connect two wired networks (no other wireless clients). The distance between the two wireless routers is about 50m.

    According to the Status>wireless page (using Alchemy 1.0) the connection speed is 54Mbits/s, the rssi = -80 (approx).

    When transfering large files accross the wireless link, I get a consistent speed of about 1.5Mbytes/s (~12Mbits/s). I read many posts about WDS cutting the bandwidth in half, but apparently a WDS link between only two AP should give the same speed as a AP-client config. Is this tue? (The only reason for using WDS, is because of the windows file sharing issues in the AP-client mode).

    When connected at 54Mbits/s, does the rssi value influence the transfer speed, or does one get a specific transfer speed at 54Mbits/s WDS (irrespective of the rssi)?
     
  2. leonb

    leonb Network Guru Member

    Could someone please help with the info
     
  3. howardp6

    howardp6 Network Guru Member

    The 54 mbs is only the connection speed, not an actual measure of throughput, which cna be much lower. A 54 mbs connection will give you at best about 23 mbs throughput. Each client can connect at 54 mbs but the actual trhoughput will be divided between the number of users. Your actual throughput is about halve of the maximum I would expect to see. You should use a tool like IPERF to measure thoughpu
     
  4. davidsonf

    davidsonf Network Guru Member

    A -80 dBm signal is border line. I'm amazed that you can keep a 54Mbps connection going.

    I don't know what that should be. But assuming you actually are maintaining a 54Mbps connection, it appears that you have just clearly demonstrated that using WDS in the way you are will cut throughput in half! Typically 22-26Mbps would be the best you'd get with a single client-AP connection. You are getting half that...

    I'm not sure what you mean by this. You can isolate clients if you wish.

    Definitely! At -80 dBm you are right on the line where things begin to deteriorate...
     
  5. burglar

    burglar Network Guru Member

    Try to make your configuration like this:
    http://arpanet.myblogsite.com/WDS/

    I had same problem with transfer but I try to configure like uphere link and I got better performances.
     

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