I raised a case with TAC what a stupid problems it is...
Basically, you need to check the switchports that the menagement ports are connected to are either set to auto/auto or both sides of the connection are set to 10MB/FD.
I discovered that my swicthports were set to 10FD but the CSS was set to auto and so negotiated 10HD. The wierd thing is, no errors are logged against the switchport and there is no idication of an issue on the CSS.
I've re-configures the CSS ports and now all is working fine :-).
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...
Cisco Documents are usually accurate, but when it came to the document
on Cisco APIC Signature-Based Transactions it was slightly off the mark.
This document is for those novices to API like me who cant seem to
figure out how to go about performing signat...