ZyXEL Communications ZyWALL 110 Handbook page 403

4 In the same screen, create a VPN tunnel for the VPN gateway BO2. Select VPN
tunnel Interface as the application scenario.
CONFIGURATION > VPN > IPSec VPN > VPN Connection > Add
5 Go to CONFIGURATION > Network > Interface > VTI > Add to create a VTI for the
VPN tunnel BO1. Be aware that the IP address of this VTI must be in the same subnet as
vti1 on USG1.
In this example, the IP address and subnet mask of vti1 on USG1 is 10.10.10.10 and
255.255.255.0 respectively. The IP address of vti1 on USG2 must be in the subnet of
10.10.10.0/24. Enable the connectivity check. Enter the IP address of vti1, which is
configured on USG1.
CONFIGURATION > Network > Interface > VTI > Add
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