CISCO AIR-CT2504-15-K9 2504 Wireless Controller 15-AP License

15-AP Cisco 2504 Controller Order

AIR-CT2504-15-K9 is the exact Cisco 2504 wireless-controller PID for up to 15 Cisco access points. The number embedded in the PID identifies base AP-license capacity; it does not state client count, AP compatibility, software release or high-availability behavior.

Capacity selection decision

Use the 15-AP order for a small controller domain whose production, spare and growth count remains within fifteen. Preserve at least one capacity position for controlled replacement or staging instead of licensing exactly to the current live count.

Software and AP compatibility gate

Inventory every AP PID and regulatory domain, then verify support in the intended AireOS release before purchase. Save controller configuration, license summary, AP join state, mobility design, WLAN/security settings and management dependencies.

Commissioning evidence

Join a representative AP, validate WLANs and wired reachability, then reconcile all fifteen license positions against the controller license summary. Record the trigger for moving to a larger capacity or replacement platform.

Lifecycle and migration

Cisco has ended sale for the 2504 controller. Verify the exact support status and map AP compatibility, WLAN policy, licensing, controller capacity and redundancy to the selected Catalyst 9800 migration design rather than assuming configuration parity.

Official sources: Cisco 2500 Series controller data sheet and Cisco 2504 end-of-sale notice.