This won't work and you'll see from the error message. Your standby WLC has a particular firmware loaded with LDPE enabled. So first, you need to answer if you need LDPE or not.
Both firmwares has to match, including LDPE. If you need LDPE, the your primary has to be loaded with LDPE before you can proceed. If you don't need LDPE, then you need to downgrade the secondary to non-LDPE version before you can proceed.
Why do you need native HA: The native HA feature allows two Cisco DCNM
appliances to run as active and standby applications, with their
embedded databases synchronized in real time. Therefore, when the active
DCNM is not functioning, the standby DCNM will...
This document will provide screenshots to outline the steps to setup
TACACS+ configuration to ACI and also the configuration required on
Cisco ACS server. Please find the official Cisco guide for configuring
TACACS+ Authentication to ACI:
Is it supported or NOT supported? It's a frequently asked question.
Before APIC, release 2.3(1f), transit routing was not supported within a
single L3Out profile. In APIC, release 2.3(1f) and later, you can
configure transit routing with a single L3Out pr...