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Very bad WLAN performance

Kosta88

I have Sophos UTM and two AP15 access points.

The best I am able to achieve are some 100mbit or less. Nowhere near 300mbit I should be getting. Measured on a Win10 copying big file over SMB.

I have a single SSID/Network, and as far as I can say everything set up standard.

Ethernet connection is at full speed.  UTM is latest update.

Am I missing something?



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  • 0

    What speed do you see when using robocopy from the Win 10 command line?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Around 45mbit. About same thing when I copy in the explorer, 5-6MB/s.

    In the Firewall I still see 144Mbit (last transfer speed, which is wrong).

    And in Windows, Wi-Fi Status, Speed: going from 85 and 130 Mbit, up and down. (however, I am not transferring anything, not sure if this should read 0 when not doing anything, like task manager does)

    Signal Quality: full.

    Access Point is about 3m away.

  • 0 in reply to Kosta88

    Are you sure that that traffic isn't being slowed by Intrusion Prevention?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    Turned off IPS, and all the options under other tabs, same result.

  • 0 in reply to Kosta88

    What if you try connecting the AP to a different NIC?  Make & model of NICs?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to Kosta88

    That values sounds for a n connection reasonable. A good read to phy (connection rate) vs. real transfer rate (data throughput)

    5-6 MB/s is a good value for a realworld n connection.

    WIFI is a) a halfduplex connection and b) over a shared media (air) with c) depending on mcs and error correction noteworthy overhead.

    Over the day throughput may be even lower, at 3 a.m. when air is really quiet it might go up to 8..10 MBytes/s in best case.

    Remember the old 10 HDX coax cabling? The more clients were talking, the slower single client throughput became....*sigh*, good old times ;o) Shared media access...

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