What am I forfeiting if I move from a IPSEC/GRE tunnel to a IPSEC-only tunnel. I was looking at EzVPN or DMVPN. I know I lose non-IP and multicast but how does that equate to the user's experience. We are using IP exclusively.
-Will I need to use static routes.
-Will I lose the ability to host VoIP.
-Will a Windows network continue to function.
-Are there well-known applications that require Multicast.