Hello, I have upgraded route reflector in private MPLS network from IOS XE 3.16.5 to Everest 16.6.5 release. After upgrade, dynamic BGP peers did not connect to RR. In debug, I see mesaages such as:
004668: Mar 10 02:07:02.382 MET: BGP:DN: peer-group PE-UWAN is not activated in any af for dynamic neighbor
The peer-group is activated in vpnv4 address family. With old IOS, the same config works ok, so I had to downgrade back. Anybody having the same problem?
Try disable and enable again the RR in one router in old version. It sounds like a bug.
After upgrade are you reset bgp connection?
Because, there is a bug reported here, mentioning it: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCtj67572/?rfs=iqvred
If you you already reset bgp connection, try it running at least of two routers at the same IOS version.