I am begineer in networking.I confuse in encryption.
In our branches have two VPN tunnel. One is IPSec and other is DMVPN tunnel.IPsec go to DC 1 and DMVPN tunnel go to DC2.
I would like to know :
one isakmp policy IPsec tunnel apply physical interface .
For eg. int G0/0
crypto map ipsec
for DMVPN : ohter isakmp policy apply dmvpn tunnel
eg: int tunnel 0
tunnel protection ipsec profile protect-gre
In this scenario, i worry dmvpn traffic will double encrypted ? because my understanding is
Data Traffice==>LAN==>Physical==>Tunnel ?
Or They will auto sperate tunnel because of ACL rule of IPSec ?