ExtremeWireless (Identifi)

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Slow Wireless Throughput

  • 1.  Slow Wireless Throughput

    Posted 02-01-2019 16:45
    I noticed our throughput isn't what I would expect on our wireless devices. We have a guest network as well as a corporate network and both of my test cases only yield about a 20-30 Mbps.

    With my corporate device I believe this is about the best I could expect, however I know my iPhone can do more. If I connect a laptop to our wired guest network I can achieve a greater throughput so I'm sure this is on my wireless side.


    Controller: Virtual on 10 GB backbone.
    Connected AP: 3935i

    Corporate Network-
    Topology: B@EWC
    Device Wireless: Centrino N
    Protocol: 2.4n
    RSS: -40
    802.1x authentication

    Guest Network-
    Topology: B@EWC
    Device: iPhone 7
    Protocol: 5.0a
    RSS: -44
    Pre-shared key

  • 2.  RE: Slow Wireless Throughput

    Posted 02-01-2019 18:24
    I've just run a test on my AP3935-ROW for max. throughput (=settings that I'll never use in a real deployment) and get 230Mbps with my Surface 5 on the first try.

    The settings that impact throughout the most is the channel width (max = 80MHz) and what the clients supports.

    As you'd see below my AP is set for channel# 52,56,60,64.

    MCS table for reference > https://en.wikipedia.org/wiki/IEEE_802.11ac#Data_rates_and_speed

    My settings....

    BTW, I use bridge@EWC only for guest solutions but never for the corporate SSIDs because the controller could be a bottleneck.


  • 3.  RE: Slow Wireless Throughput