Hi
Excuse me if I'm doing this wrong but I posted a discussion in the DNA Center board but think it may be better posted here. The discussion is at
https://community.cisco.com/t5/cisco-digital-network/dna-center-application-policy-causes-isis-neighbors-to-drop/td-p/4004507
I tried to see if I could move the discussion here but couldn't find a way to do so.
In short I have an issue where I was testing DNAC application policies. When I deployed a test policy to my fabric the ISIS neighbours all dropped. I was able to resolve this by connecting to each device via the management interface and remove the policy from the /30 interlinks between Border and Edge. I expected a pretty standard QoS policy to be pushed out that I could inspect and tweak to suit my needs. However, this has caused quite a serious issue in that DNAC can push out a policy which effectively destroys my underlay. I am using DNAC version 1.3.1.4 with Cat9200 Edge devices and a Cat9300 Border?Control node. This is just a lab test environment but the implications of this in a live fabric would be very serious.
Has anyone seen this before?
Thanks for any input, Stuart.
