C9800 wlc - tag source vs tag persistence

[Charlie Grey]

if wlc A and wlc B both have tag persistence enabled.

on wlc B, tag source priority is "filter" then "AP".

if AP A is move from wlc A to wlc B, will AP A reconfigure all it's tags from wlc B "filter" or it will retain it's tag saved in the AP itself??? 

[jagan.chowdam]

From Cisco 9800 best practices guide, 

"The operational advantages of AP tag persistency feature are clear when you need to move APs between wireless controllers. This can be in the context of APs migration or in a primary/secondary (N+1) high availability deployment. Since the tags are saved on the AP, when the AP joins the second WLC, it will present the tags and as long as these exist on the controller, the mapping will be honored. Of course, the tag source priorities still apply, and the AP tag source is considered only if no static or filter-based mapping are present for that AP."

Have a look at this post as well.

https://community.cisco.com/t5/wireless/revalidate-tag-source-on-aps/td-p/5025581

Jagan Chowdam

/**Pls rate useful responses**/

[JPavonM]

Tag persistency is for the use case where the WLC that receives the APs don't have the static AP configuration, but it has the profiles and tags that the AP carries.