You're running MVPN and have the issue that PIM neighbors are flapping in the VRF over the tunnel. Basically, PIM is established over the default MDT. This means that it looks like there is an issue with the default MDT multicast group in the core. You need to check if this multicast group is stable and forwarding all traffic.
There is quite a few things to check and MVPN is rather complex, so it might be a good idea to open a TAC case to follow up on this issue.
Introduction: The "external-out enable" command is available for
configuration under the "router ospf process" in case of the IOS-XR
operating system. This command basically enables advertisement of
intra-area routes on the device as external routes in th...
Introduction Basic configuration for netflow Scale parameters for
netflow Netflow support Architecture Packet flow for netflow Inside the
LC CPU Netflow Cache size, maintenance and memory Sample usage Cache
Size Aging Permanent cache Characteristics Which...