Static Channel Selection and DFS Validation/Query about Timer Messages

[Erfan7]

Dear All I have 2 questions:

1. If I select a static/custom DFS channel of an AP, in that case, will the DFS protocol/mechanism work? and radio will stop using the channel for 30 minutes.

2. My second question is related to AP logs while discovery and join process, please let me know the meaning of following log messages, what is timer message and control message.

I. CAPWAP-3-ERRORLOG: Failed to handle timer message

II. CAPWAP-3-ERRORLOG: Failed to handle capwap control message from controller

Thanks.

[Erfan7]

Scott you mean channel will be changed after radar detection, and as per DFS algorithm previous channel will be black listed and  after 60 seconds of scanning AP will be assigned interference free channel..

But again I would must say channel is fixed, and I have not observed channel shift once I made that static...and this is the thing I want to understand, that in static channel scenario, will the DFS shift overruled...That I have observed too

One more thing in that period DFS detects didnt stop because if I make it dynamic I see the triggers logs again....

[JPavonM]

@Erfan7how do you know there is a DFS event that should be triggering a channel shift on the AP? Do you mean you're seen such DFS event in AP logs and an AP channel shift is not happening? If this is your scenario, you should open a TAC case as DFS is mandatory. If the AP is not leaving that channel after a RADAR signal is detected, then that could be a defect that needs to be analysed and fixed, otherwise you could be fined.