I have 3 C9300 Switches configured to use ISIS running 17.12.04 issue was present on 17.06.04 prior to upgrade as well.  Each of the switches is configured for the same ISIS area with different SystemID's based upon the switches Loopback0 interface I...

I seem to have worked myself into a corner on this one waiting for TAC support contract to come thru.  Essentially, I built out a fabric site in DNAC and added a C9300 switch to said fabric, in doing so I added several VN's as "Use Border/CP fort his...