how to configure Site to Site vpn with 3rd party using unnumbered VTI in cluster env?

[zero_sinte]

how to configure Site to Site vpn with 3rd party using unnumbered VTI?

Whether unnumbered VIT interface can be supported in cluster env.

How to configure DPD timeout and interval?

[PhoneBoy]

Yes, you can use unnumbered VTIs with 3rd parties.

You can also configure DPD timers.

See: Site to Site VPN R80.10 Administration Guide 

The steps you will perform on the remote end will depend on the equipment and are obviously not covered here.

However, you should configure the same values on both ends.

[zero_sinte]

-Thanks for your reply,I will configure it in my lab

[zero_sinte]

I found Advanced Permanent Tunnel Configuration in R77 admin guide that is not said about DPD timeout,but Advanced Permanent Tunnel Configuration in R80.10 admin guide it is relative