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Airport Express--How many is too many?

1792 Views 6 Replies Latest reply: Jul 29, 2008 7:31 AM by frankiec RSS
Michael Kozlowski Calculating status...
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Jul 19, 2008 6:43 PM
I am running a new Airport Extreme base station with 3 Airport Express units to extend the range over about a 6200 sq ft house. My wife set up her office at the far extreme from the base station and, although her signal was somewhat intermittent, it worked well enough to allow her to connect to the internet with adequate functionality (although her signal strength was generally at or below 5 Mbps). After I successfully installed a 4th Express using Airport Utility, and located it in her office, her PC connectivity to the network suffered, and a printer connected to the Express in her office was not recognized on the network and wouldn't print. Do I have too many Expresses on the base station such that the signal is degrading performance for the whole network? Thanks.
Mac Book Pro, Mac OS X (10.5.4), 2 Classics, Apple TV, 2 Nanos, 1 5G Ipod, 1G Iphone, Touch, Powerbook, Macbook
  • Duane Level 10 Level 10 (117,955 points)
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    Jul 19, 2008 8:28 PM (in response to Michael Kozlowski)
    When using 802.11g's WDS setting each link cuts the RF bandwidth in half.

    With 3 AirPort Express (AX) you have 2 WDS links which means your maximum RF bandwidth is 1/(2*2) = 1/4 of 54 Mbps or 13.5 Mbps.

    With 4 AX you have 3 WDS links which means your maximum RF bandwidth is 1/(222) = 1/8 of 54 Mbps or 6.75 Mbps.
    iMac Alu C2D 2.4 GHz 24" 4GB and 20" 2GB, Mac OS X (10.5.4), iBook G4 14" 1.42 [1.5GB],iBook 466 SE Graphite [576M-40GB],iMac G4 700/768MB
  • limps Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 21, 2008 7:57 AM (in response to Duane)
    If I use an airport extreme as base station, a airport express a relay and one additional airport express as remote, would my bandwith be reduced? If so by how much?

    Assume all are set up as 802.11g and 802.11n.

    Thanks
    MBA, Mac OS X (10.5.3)
  • Duane Level 10 Level 10 (117,955 points)
    Currently Being Moderated
    Jul 21, 2008 8:06 AM (in response to limps)
    Operating in 802.11g's WDS, the bandwidth would be reduced 1/(2*2) = 1/4.
    iMac Alu C2D 2.4 GHz 24" 4GB and 20" 2GB, Mac OS X (10.5.4), iBook G4 14" 1.42 [1.5GB],iBook 466 SE Graphite [576M-40GB],iMac G4 700/768MB
  • frankiec Calculating status...
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    Jul 28, 2008 11:57 AM (in response to Duane)
    If using the "Extend" option instead of a WDS with all the stations being of band type "n", is there a limit to how many Express "n" I can use to extend an Extreme "n".

    I currently have one Express "n" extending (not WDS) my Extreme "n", and I would like to add one more. Is there a limit to how many can be used to extend the wireless network wirelessly?

    Thanks,

    Frank
    Dell Inspiron 1720, Windows Vista
  • Duane Level 10 Level 10 (117,955 points)
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    Jul 29, 2008 7:02 AM (in response to frankiec)
    I'm sure that there is a limit but 2 wouldn't be a problem.
    iMac Alu C2D 2.4 GHz 24" 4GB and 20" 2GB, Mac OS X (10.5.4), iBook G4 14" 1.42 [1.5GB],iBook 466 SE Graphite [576M-40GB],iMac G4 700/768MB
  • frankiec Level 1 Level 1 (10 points)
    Currently Being Moderated
    Jul 29, 2008 7:31 AM (in response to Duane)
    Duane,

    Thank you very much.

    Frank
    Dell Inspiron 1720, Windows Vista

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