Cisco Mobility Express is a virtual wireless LAN controller integrated on 802.11ac Wave 2 access points. Your Cisco 1815w running Mobility Express support up to 50 access points and 1000 clients.   With Mobility Express, you get the most affordable Cisco enterprise-class wireless solution with no physical controller cost, no access point license cost, and no ongoing subscription fee. The rest of controller options (Physical, virtual, cloud) require you to buy them and install.   **Please rate if this response is helpful** CJ ... View more

If you know for sure that switch or POE Injectors can provide 802.3at power, then probably it might be a bug.   Can you share the output of the following commands   On AP show controllers dot11Radio 0   On WLC show ap config 802.11b <AP Name>   Regards, CJ ... View more

Can you send the following output: sh sysinfo   from WLC sh   version   from AP   Also, make sure the time on WLC and AP are in sync. ... View more

You can start at Cisco 9800 CL controller https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9800-cl-wireless-controller-cloud/nb-06-cat9800-cl-cloud-wirel-data-sheet-ctp-en.html   https://www.cisco.com/c/en/us/products/wireless/wireless-lan-controller/product-comparison.html     **Please rate if this reply is helpful** CJ ... View more

That is not normal at all. Opening a TAC case is what I would also recommend.     ... View more

Can you share " show process cpu" output from the 5508 WLC.    CJ ... View more

Refer Ordering section in the following document https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/mobility-express/q-and-a-c67-734485.pdf   Also, the Mobility Express Deployment Guide: Table 1 & 2 https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-2/b_Mobility_Express_Deployment_guide/b_Mobility_Express_Deployment_guide_chapter_01.html     ... View more

Have you tried adding the WLC info to the AP manually via its SSH:   AP# capwap  ap primary - base WLC-Hostname WLC-IP Address   Can you post the complete console output, when the AP boots.   Thanks, CJ ... View more

That is correct. K9C will be Mobility Express Controller (Master) and the rest can be K9 APs.    Thanks, CJ ... View more

All Cisco Wireless Controller software image will end with .aes   I think you are looking at AP image which will have .tar extension   As Rasika explained, all APs associated with a controller will get their software pushed from the controller. Meaning WLC code will have AP image bundled into it. As soon as AP joins the WLC, it'll upgrade/downgrade it's image based on the WLC code.   If you are trying to add a new AP to the WLC, check the WLC software compatibility Matrix below and make sure your controllers are running on the correct image which supports the Access Points. https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html#pgfId-590411   Thanks CJ   Please rate all helpful posts       ... View more

Start with Top-level SKU:  LIC-CT3504-UPG Then select  LIC-CT3504-1A - Qty 8   And Cisco CON-SNT-AIRCTRTK is SNTC-8X5XNBD Cisco 3504 Wireless Controller.  More info on SNTC is: https://www.cisco.com/c/en/us/support/services/smart-net-total-care/index.html   Regards, CJ ... View more

Can you post: WLC:  sh sysinfo;  WLC:  sh time;  AP:  sh version; and  AP:  sh ip interface brief Make sure the 1832i you are trying to join to ME is not running on Mobility Express image.   Regards, CJ   Please rate if this post is helpful. ... View more