Licensing for two Cisco ISE servers We have two Cisco ISE servers (ISE-3355-K9) running 1.2. When we ordered these from our reseller, the reseller's engineer (who was a wireless CCIE) insisted that we only needed one copy of the `L-ISE-BSE-500` license for both servers, since they would be a redundant pair. In the mean time, that engineer left the reseller, and nobody there understands what he was thinking; however, we spent our entire budget on this order. We don't have extra money to purchase more licenses, but we could have asked for more money if we needed it for the order. The budget cycle is over for this project. I don't understand how to build these servers as a redundant pair and only one license. Can someone explain how this works?

One license is all you need.

I assume since you have the licensing, you also ought to have TAC support along with it.

If not, the docs on Cisco.com will really help in pointing you in the right direction.

Here's a good place to start: ISE HA Docs

And here's another helpful link: support forums question