SZ auto channel preference for UNII-2e
Hi Guys, so i have a ticket open with support but thought i would ask here for anyone who has experienced a similar issue:
I have recently installed a SZ100 (first one) which is sat in a DC and have remote AP's from multiple sites connected to it over MPLS. The issue that I am seeing is that i have auto channel set (background scanning) and 99% of the AP's installed choose a UNII-2e channel rather than a UNII-1 or even UNII-2. I have a mix of clients and am concerned that not all will support DFS channels but i dont want to limit my deployment to 4 channels. For example; one site has 21 AP's, 20 of them have a UNII-2e channel and only 1 has selected CH36. I have done an Ekahau walk and there is virtually no 5GHz noise so this must be a software 'feature'. Same at other site too with a couple of AP's.
If i change an AP group to UNII-1 then all AP's choose a UNII-1 channel and operate without issue.
So my concern is that there is an issue with software that means AP's will prefer UNII-2e channels before any other.