If you have a fully established (phase 1 and 2) VPN, is there a show command that lets you see which isakmp policy is being selected for that tunnel?

I have a hub-and-spoke multipoint frame relay network configured with EIGRP and all routers receive routes from eachother.  If I ping or traceroute the IP address of a loopback on spoke R2 from spoke R3 it goes out to the hub R1, but never gets any f...