I'll tell you what I know (I'm still learning myself).
1. Yes this can be done. Setup the AXG to run in stand-alone mode (basically the one unit serves as both manager and gateway).
2. Don't know the answer to this one yet so I can't help with this question.
3. See #1. A single unit can run as both a manager and a gateway, but the manager is required. FWIW...most of the cost of the manager is the licensing so you won't save that much money by loading it all on one box.
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...