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Channel selection not working for Ap100c managed in the Sophos UTM SG430

We have 21 AP100c Access Points and they are managed by the UTM SG430 with Firmware version: 9.510-5

I can change the channel for 5Ghz into another channel, but all acces points stay default at channel 36. Even when i select channel selection to 'auto' or/and Dynamic channel, it stays on 36 when i scan the area with laptop or other devices.

Reboot of Access Points and UTM doesn't change the situation, does anyone have an idea?



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  • We have almost the exact same problem for a week or two now (as far as I know). Most of our APs are changing channels by themselves. If I set the channel to e.g. 100 it changes to 44, 36 or something else causing multiple APs on the same channel. The change takes place within a few minutes to a couple of days. It is almost impossible to select the channel myself.

    The AP list shows the channels I have selected, but if scanned with inSSIDer (or similar) the APs are using completely different channels. 2.4 Ghz is fine, only 5 Ghz has the problem.

    22 APs (AP100, AP100C, AP55, AP55C), UTM SG310, newest firmware, reboot AP or UTM makes no difference.

    This is not to hijack your thread. Just to tell that others have the same problem. Hope there is a solution.

  • Hi, thanks for your reply.

    Indeed, it is only the 5Ghz, but that's the band we use all the time.

    We use a dense formation of Acces Points, so with all the Access Points on the same channel, we suffer a lot of wireless problems.

     

    Hopefully an engineer of Sophos will respond to this post.

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  • Hi, thanks for your reply.

    Indeed, it is only the 5Ghz, but that's the band we use all the time.

    We use a dense formation of Acces Points, so with all the Access Points on the same channel, we suffer a lot of wireless problems.

     

    Hopefully an engineer of Sophos will respond to this post.

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