Unable to ping from using source IP

[Adnan Khan]

From my router i am unable to ping for example destination IP of Cisco Prime 172.17.10.10 over DMVPM. G0/0.1 is the management IP and similarly switches behind that using same IP also not able to ping. What could be the issue?

Router Interfaces and IPs example as below

Interface                IP-Address

Ge 0/0.1                172.16.12.10

Tunnel12                192,168.12.10

[TONY SMITH]

First rule of troubleshooting "I can't ping xxxx".  Does "xxxx" in your case 172.17.10.10 have a route back to the specific address you are testing from?  Second rule, does xxxx actually reply to ping in any case.

The point here is it's tempting to think "I can't ping xxxx", but the issue may be that the answer is not getting back to you.

I suggest doing a traceroute in each direction, see where it gets lost.

[MHM Cisco World]

friend the DMVPN is 
underlayer <<- 172.16.12.10 which I think the tunnel source 
Overlayer <<- 192,168.12.10 which is tunnel interface

now your destination is reach via which layer ?

[Adnan Khan]

Its reaching via tunnel interface IP

[MHM Cisco World]

then use tunnel interface as source in ping 

[Joseph W. Doherty]

One of the more common causes of what you describe is missing routing information on one or both ends.

[paul driver]

Hello
You dont mention what type of DMVPN your are running?
Can you post the configuration and route table of the DMVPN hub which is the mapping agent called a Next Hop Server (NHS) and a client Next Hop Client (NHC) 

Hub/Client
sh run int tunnel xx
sh ip route
sh ip protocols
traceroute xxxx source xxxx