As your meaning, you want to make WLC3504 as a "N+1" mode secondary WLC.
First, WLC3504 support RTU license:
RTU licensing is supported only on the following Cisco Wireless Controller platforms:
-Cisco 3504 WLC
-Cisco 5520 WLC
-Cisco Flex 7510 WLC
-Cisco 8510 WLC
-Cisco 8540 WLC
-Cisco vWLC
So you can config the licenses by this commands:
Procedure
Add or delete the number of APs that an AP license can support by entering this command:
-license {add | delete} ap-count count
Add or delete a license for a feature by entering this command:
-license {add | delete} feature license_name
Activate or deactivate an evaluation AP count license by entering this command:
-license {activate | deactivate} ap-count eval
Or you can config license by GUI:
Procedure
Step 1
Choose Management > Software Activation > Licenses to open the Licenses page.
Step 2
In the Adder License area, choose to add or delete the number of APs that an AP license can support, enter a value, and click Set Count.
Step 3
Save the configuration.
Note:
After you add or delete the license, WLC must use the save config command to save the license.
You can use the WLC3504 as a secondary unit after that. it can be supported 150 aps and 3000 clients in centralized mode.
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Rps-Cheers | If it solves your problem, please mark as answer. Thanks !
