ACS 2 different versions on the same distributed system

[withool000]

Hi,

Does anyone know whether we can join 2 different versions on the same distributed system.

I have 5.4 and 5.6 and 5.8 version on secondary server and there are some difficulties upgrading 5.4 to 5.8.

Is there any issue?

[balaji.bandi]

I do not believe it going to support that way, you need to have same version across network 1+20 (version 5.8 max supports).

what is the issue you having with upgrade from 5.4 to 5.8.

have you looked at the path of upgrade :

https://www.cisco.com/c/en/us/td/docs/net_mgmt/cisco_secure_access_control_system/5-8/installation/guide/csacs_book/csacs_upg.html