Benefits of IPsec VTI

[Raminkn20]

Hi.

I have a question about IPSec VTI dynamic.

Im studying about that these days, but I don’t know why we must utilize that when we have DMVPN technology? What’s the advantages of that against DMVPN?

[MHM Cisco World · Accepted solution]

without DMVPN 
you config  ONE tunnel for each site 
with DMVPN (phaseII and phaseIII)
you config ONE tunnel for all site 
How it work? the DMVPN use hub and spoke 
spoke send NHRP to hub and this make hub build tunnel for each now spoke even so we config one tunnel only. 

MHM

[Raminkn20]

Thanks @MHM Cisco World 

so we can say when we don't need hub and spoke topology, we must use this technology? and It's almost automatic gre+ipsec tunnels. am I right?

[MHM Cisco World]

if we have hub and spoke topology we can use DMVPN

and It's almost automatic gre+ipsec tunnels. am I right? Yes when we config ONE tunnel in spoke we specify the Hub and hub build tunnel between Spoke automatic 
MHM

[Raminkn20]

Thank you @MHM Cisco World 

[MHM Cisco World]

you are so welcome 
MHM