site-to-site vpn, no communication

blubber007

Having two USG Flex 100 and an VPN connection using IPSec with a pre-shared password. Latest firmware installed.
We need 5 VLAN connected to both sides (branch and central).
Subnet1 central: 10.7.1.0/24
Subnet1 branch: 10.8.1.0/24
Subnet2 central: 10.7.2.0/24
Subnet2 branch: 10.8.2.0/24
etc.
VPN tell me, it's connected, but I don't have traffic or ping.

What am I doing wrong?

What is the viable way to connect multiple VLANs? Multiple VPNs?

VPN.pdf

Thanks!

Zyxel_Kay

Hi @blubber007

To better assist you with troubleshooting the VPN issue, could you kindly provide the following information:

1. A more detailed screenshot of your security policy configuration. The initial one you provided seems to cover only a small part of the setup.
2. Additionally, please share a screenshot of the relevant event logs when one of the site-to-site VPN connections is established.

blubber007

VPN2-Doku.pdf

Thanks for very fast answer. I copy all information to document and would be happy, if you have the rigth idea for me. The data of document collected by branch FW. If you like, I can give you remote access.