I am almost 100% sure this is not possible, but just thought about double checking with someone with more expertise on wireless.
Suppose I have the following scenario:
WLC-1 with 25 licenses on building 1 (5508) WLC-2 with 100 licences on building 2 (5508) -- new one being added to the network
There is a total of 75 APs. 25 APs of those APs are in building 1 and primed to WLC-1. WLC-2 will be added and it will be the primary WLC for 50 APs. With the addition of the second WLC, we want to add some redundancy, as follows:
Add WLC-2 as a secondary WLC for the 25 APs in building 1 and add WLC-1 as the secondary WLC for the other 50 APs in building 2, so we could have some redundancy, should one of the WLC fail, the other one would accept the associations of all the APs. Obviously this would be a problem, as WLC-1 only have 25 licenses and once WLC-2 fail, all the other 50 APs would be able to associate with WLC-1 as all the 25 licenses are already used.
My thought process, is that we need 75 more licenses on WLC-1, so both WLCs would have the same number of licenses and the number of licenses is greater than the number of APs.
But the problem is that someone told our customer that we should be able to keep WLC-1 with 25 licenses and leverage Cisco Prime NCS, buying 100 licenses (L-NCS-1.0-100). According to them, this license would give the ability of the WLCs "sharing" (if you will) all the 100 licenses, so should one WLC fail, the other one could use the licenses. I am almost sure that this is wrong, as NCS is more of a management platform with several troubleshooting capabilities, like generating reports and helping on troubleshooting signal issues, etc. So bottom line is that the license, would be for the amount of devices that NCS could have visibility.
Can someone tell me if NCS should be able to share its licenses with the WLC or if my initial understanding of having to buy +75 licenses for WLC-1 is the correct approach.
Thanks a lot in advance..