ISE 2.2/2.3/2.4 Smart Licensing

[jomessin]

Good morning, Customer has a smart account and a Virtual account and 2 "product instances" for ISE. When we connect a third ISE deployment to SSM, one product instance goes away and we still only 2 product instances. Is this a known limitation?

[Arne Bier · Accepted solution]

Which license are you talking about?  They all work a bit differently

BASE License - only gets consumed when an associate product (i.e. ISE PAN) requests it

TACACS license - gets consumed straight away and disappears from the pool (1 license consumed per deployment)

APEX/PLUS - same as BASE license.

SO in summary, if you only purchased 2 TACACS licenses, then you cannot enable TACACS on the 3rd ISE deployment.

But all the other licenses can be sliced and diced as you like it.  It's good practice perhaps to assign a different virtual domain for each deployment, from which you then create the token and register your deployment's PAN.