Aborting Image !!top!! Download(0x0) Dtls Cleanup Online

Firewalls or incorrect VLAN configurations can block the UDP ports (5246 and 5247) required for CAPWAP/DTLS.

If the versions don't match, the AP tries to download the correct image. If this download fails (due to timeout, MTU issues, or storage), the secure tunnel is torn down—this is the DTLS Teardown . aborting image download(0x0) dtls cleanup

Unable to get new APs addedd to the Mobility Express Controller Firewalls or incorrect VLAN configurations can block the

If the Maximum Transmission Unit (MTU) along the network path is too small, large CAPWAP packets (like firmware files) may be dropped, causing a timeout. Unable to get new APs addedd to the

If you are seeing this loop on your console, follow these steps recommended by Cisco Community and support documentation:

The WLC may not have the specific image file required for that AP model in its internal storage. Troubleshooting and Fixes

A secure Datagram Transport Layer Security (DTLS) tunnel is established.