VTP mode transparent across all devices. Unless you are doing some sort of 802.1x authentication I don't see a need, just headaches.
Make one of the collapsed core members the STP root via the spanning tree prior 0 command for all vlans. Set the other member as a backup with the spanning tree prior 4096 or some other small value for all vlans.
Create a trunk between the collapsed core members trunking all vlans.
Create a trunk from each access switch to each collapsed core member and trunk the appropriate vlans, or all.
Create your layer 3 interfaces for the vlans on the collapsed core members and set up redundancy via HSRP or VRRP.
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...