AIR-CAP3602I-A-K9 with AIR-RM3000AC 802.11ac module only broadcasting 802.11ac beacons for one WLAN

[Sam Brynes]

I am running a Cisco 2504 WLC with 8.5.140.0. I have a total of 4 WLANs configured with the "802.11a only" radio policy.

All these are under one AP group (along with other WLANs configured with an "802.11g only" radio policy).

I did a quick NetStumbler / NetSpot sniff of the wifi networks available, and I only see one SSID as an 802.11ac network. I don't see the other "802.11a radio policy" WLANs at all with listed as 802.11ac networks. They're listed as 802.11a/n.

Under the Wireless menu at the top > 802.11a/n/ac, if I go under the 802.11ac radio slot, I have opted to use a channel width of 80 Mhz and a Tx Power Level of 1, if that matters. The same page says "11ac Supported: yes".

Does the AIR-RM3000AC only support one WLAN using 802.11ac? I am using a Cisco Aironet PoE adapter that can do 30 watts of power (I forgot the exact model, and it's not on the label). I think that using the AIR-RM3000AC in addition to both radios on the 3602i can cause the power consumption to go above the PoE 802.3af 15.4 watt standard.

[Scott Fella]

We have also ran the same AP’s and modules. They work fine except if the module is not seated properly, too loose or over tighten, will cause the ap to reboot. In order to utilize ac, your ssid needs to either be open or using WPA2-AES. Anything other than that is not supported by 802.11n or ac. From the wlc cli, issue the following command: show ap slots. You will see if the ac module is detected.

[patoberli]

If you connect to one of those SSIDs which are only shown as 802.11n, do you get AC connection speeds?
You first need to check the security of the other SSIDs though, only Open or WPA2-AES supports 802.11ac. WMM must not be disabled.