How many APs can be set as master and what is the maximum number of slave APs for FlexConnect AP upgrades in a specific FlexConnect group?

During a FlexConnect group software upgrade, one AP per AP model is elected as the master and retrieves the firmware image from the WLC, then acts as an image server for up to three slave APs of the same model. This tiered distribution architecture limits the number of APs pulling images over the WAN link, reducing bandwidth consumption during large-scale upgrades.

The FlexConnect upgrade model does not include a backup master role - the architecture is strictly a master-to-slave image distribution model, and a slave limit of two per model is incorrect per Cisco documentation.

Four slave APs per master exceeds the documented maximum of three and does not reflect the Cisco FlexConnect group upgrade specification.

A backup master AP is not a defined role in the FlexConnect upgrade process - the specification defines one master and up to three slaves per AP model, not a master-backup pairing.