Getting Started with Upgrade
The following table describes the approved upgrade path applicable for all controllers except the new virtual controllers.
NOTE:
In pre-8.4.3 releases, if the MAC-delimiter is set to hyphen in the RADIUS profile for 802.1x authentication, the controller sends the called station id with MAC-delimiter as colon.
When you upgrade to the current release from pre-8.4.3 release, if there is a RADIUS reject for the MAC-delimiter, then reconfigure the RADIUS server.