I've a strange behavior of the pfSense system when establishing a multiple site-to-site connection. All sites use the same version of pfSense (2.1). I've three sites which are all in different subnets.
Sites and subnets:
- Site A: 10.1.0.0/16
- Site B: 192.168.0.0/16
- Site C: 10.3.0.0/16
- Site A (Server) < 10.10.10.0/24 > Site B (Client)
- Site A (Server) < 10.10.11.0/24 > Site C (Client)
- Site B (Server) < 10.10.12.0/24 > Site C (Client)
All sites need to be connected directly. I've managed to set this up without a problem. All sites were connected and I was reaching the different networks from each site. However, the connections are unstable.
When I remove all configurations for site C the connection between A and B works perfectly. As soon as I enable the connection with site C, A-B will be unstable (PING works randomly).
Is there a limit of setting up active site-to-site connections with OpenVPN in pfSense? Any suggestions for other configurations?