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WRT54GS WDS bridge bandwidth problem

Discussion in 'Cisco/Linksys Wireless Routers' started by none, Dec 28, 2004.

  1. none

    none Network Guru Member

    Hi,
    I setup a WDS bridge between two WRT54GS wireless routers running Alchemy 6.0rc4a, I have a laptop connected (wired) to the LAN 1 port of the first WRT and another one connected to the LAN 1 port of the other WRT.

    I put the WRTs pretty close: according to the wireless status page, they are running a full 54 Mbps link with a RSSI of about -35 dBm.

    I ran some bandwidth tests for the wireless bridge using the 'iperf' utility:
    http://dast.nlanr.net/Projects/Iperf/

    I only got about 12 Mbps, I tried both ways: from laptop 1 to laptop 2 and viceversa, the results are about the same.

    I think I should get a lot more bandwidth (about the double, e.g. 24 Mbps) out of a full 54 Mbps link.

    Any idea?

    What are your results?

    Thanks a lot.
     
  2. Morpheus

    Morpheus Network Guru Member

    Sounds ok for WDS

    WDS will halve the throughput as it needs to double transmit the data. 802.11b/g are half duplex which means
    only one side is transmitting at a time. WDS means double transmissions must take place and effectively
    halves the bandwidth.
     
  3. none

    none Network Guru Member

    I don't have any wireless client connected to the WRT54GS APs.

    Are you sure the WDS bridge will double transmit the data (and halve the throughput)?

    Thanks.
     
  4. Morpheus

    Morpheus Network Guru Member


    Yes only one side is transmitting at a time
     
  5. none

    none Network Guru Member

    The default iperf bandwidth test will test the bandwidth in one-way, and I get a throughput of about 12 Mbps. I read somewhere that a full 54 Mbps link should get a maximum throughput of about 25 Mbps.
    How much bandwidth do you get?

    Thanks.
     

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