AP repeatedly online and offline on AC

Traditional topology

After the AC license was migrated from local to license server, 4 APs have been experiencing online and offline fault conditions, affecting some of the services at the site.

1. From the AP logs, the reason for AP offline is AP config changed, and offline time for the interval of half an hour, very regular, so suspect that the AP offline with insufficient license related.

2. Check license information. The total number of licenses applied for on the active AC is 55, but only 44 licenses are used. From the perspective of AP online, the total number of aps is 48, and only 44 authorization are used, which is completely consistent with the offline situation.

dis license client
Username: cngoertek
Ciphertext password: ******
License server"s IPv4 address: xx.11.18.xx, port: 5555
License client: Enabled, Registered, Miss sync count 0
Cache Size:
  License name: APMGR, cache size: 16
License Count: 44

3. View license share groups. The shared group has 0 permissions, but 4 permissions are used. The share group checks the license status every half hour. Therefore, the AP is kicked offline every half hour. The AP then goes online and obtains the license from the share group.

Delete the AP license group, AP can take the license from the license client to resume the business online.

Command: undo wlan ap-license-group