Hi CG,
Earlier you mentioned that you were able to ping the directly connected LAN subnet IP from backup RE. In the latest example you shared, I don't see the ping working even for the directly connected LAN segment IP. This looks different from intial problem where you mentioned the reachability issue from backup RE for a different subnet which is reachable via routing-instance.
I was asking for "show route" specifically "show route x.x.x.x" and "show route forwarding-table destination x.x.x.x" outputs for the MX960 router having RE-2000 for the specific route, not the complete internet table for comparison.
Thanks
Sarathi