Advisory: Support Portal Maintenance. Login is currently unavailable, more info available here.

Sophos - STP TC (TOPOLOGY CHANGE) flood from WIFI APX device


I'm getting STP TC flood messages from Sophos APX-530 on the switch side.

Is there any advanced STP settings on the AP side?

  • Hi Tamas,

    do you actively use STP in your network?

    The only thing you can edit at the "Access Points" object level in "Wireless Protection" is enable or disable STP.

    So if not using STP, I recommend disabling it there.

    Otherwise, you should check your STP topology.

    Mit freundlichem Gruß, Regards from Germany,

    Philipp Rusch

    New Vision GmbH, Germany
    Sophos Silver-Partner

    If a post solves your question please use the 'Verify Answer' button.

  • Szia Tamas and welcome to the UTM Community!

    I bet Philipp's suggestion does it for you.

    Cheers - Bob

    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA