Trying to figure out how manual channel selection works on CAPsMAN for 5GHz, and how DFS affects things. It appears that I can set multiple channel frequencies for an interface (or channel preset), but it doesn't to play nice with DFS.
If I only specify DFS channels, channel selection works well -- setting the channel options for two APs to "5500,5660" will have one AP select 5500 and the other select 5660. I'd imagine the same would occur if I only selected non-DFS channels.
However, if I select both DFS and non-DFS channels (e.g: "5500,5660,5180"), both APs will immediately pick the non-DFS channel even if it's already crowded by other APs. This happens at interface enable time, manual channel re-selection and interval channel selection.
What I am trying to do is provide DFS and non-DFS channels to the AP, since DFS has room to avoid overlap, but while providing a channel to fallback on should the DFS range become unavailable. Is this actually possible to do or should I consider another channel configuration / live with some APs going down when they receive a DFS ping?
EDIT: My CAPsMAN network consists of three WAPac (RBwAPG-5HacT2HnD) units.