At the rf level, your middle radios are still competing for the same space if they are on the 2.4 spectrum. From the endpoints you are probably creating a packet storm at the middle radios. If you change frequencies on those radios, you will probably see better throughput. I.e. a 5.8 on one, 2.4 on another.
Being both are on is not the issue. You really have 4 radios to deal with since the packets of client b will affect client a when tp a has to handle naks and the like, right next to tp b. Have you tried one tp instead of 2. You might see throughput reduced by 1/3rd instead of 1/2. On Jan 16, 2011 9:42 AM, "Robert Chan" <[email protected]> wrote: > Hi all, > > I am implementing a piggy-back style 2-hop Wifi deployment (2-hop is all we need, so we don’t need mesh) with two TP-Link 741. What I did is the following: > > clientA ---> TPLinkA-TPLinkB ---> clientB > > The TPLinkA and TPLinkB are installed with backfire and are configured to run in AP mode. They are directly connected with an Ethernet cable and are set to channels 1 and 11 respectively. > > After setting it up. I got 30+Mbps from cleintA to TPLinkA and from TPLinkB to cleintB (using iperf) with both routers switched ON at the same time. Theoretically, I was hoping to get also 30+MBps from clientA to clientB as well. However, I only got about 17Mbps and sometimes even as low as 2~3MBps. > > Both TPLinkA and TPLinkB are ON in both cases, so the interference seen by both clients should be the same in both cases. > > What could I have done wrong? Any help will be very much appreciated. > > Regards, > > Robert.
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