Slow performance on a separate Zone WIFI Guest

HI,

Anyone suffer Slow performance on a Separate Zone WIFI with password of the day ? We have loss packet with default gateway and slow  or nothing web browsing on internet pages.

Also we have other  WIFI network ( bridged to VLAN ) in a normal situation 

Thanks Marco

    • Sophos Staff
    • Sophos Moderator
    LuCar Toni

    There is / was an issue with TSO enabled on Separate zone interfaces.

    Check this: 

    Console>  system diagnostics interface-driver-settings set <interface_name> offload tso off

    To show: Console> system diagnostics interface-driver-settings show <interface_name> offload

    • tcp-segmentation-offload: off
      tx-tcp-segmentation: off
      tx-tcp-ecn-segmentation: off
      tx-tcp6-segmentation: off

    To revert back, simply:

    Console>  system diagnostics interface-driver-settings set <interface_name> offload tso on

     

  • MarcoCaserio

    In reply to LuCar Toni:

    Thanks i check it , if this solve the problem. I've same installation with the same situation but without any performance problem, the only differerence ias about a core Switch with routing beetwen lan and Vlan

    Thanks Marco

    • Sophos Staff
    • Sophos Moderator
    LuCar Toni

    In reply to MarcoCaserio:

    There could be multiple Issues right now.

    You could start to simply check the command above.

    Next Step would be to check, if you are running V17.5 MR6.

    Another process could be, to delete and recreate the Separate Zone interface and check again.

    Next Step could be, to check, if DOS Protection strikes. 

  • MarcoCaserio

    In reply to LuCar Toni:

    I can confirm a DOS Protection issue, Now i disabled UDP Flood at the source and destination and  Guest WIFI go well. The problem was in the protocol ( udcp ) used in the  Wireless Separate zone interfaces.

    Thanks Marco

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