Mesh Firewall RED tunnels between 3 XG devices

Hi,

I have 3 XG devices that I want to set up a mesh of tunnels between. I was using IPSEC, but with all the IPSEC bugs in v17 this was not a workable solution. Also, RED tunnels give me an interface so I don't have to worry about sys-traffic-nat (which has resulted in corruption of 3 HA pairs so far) and can use OSPF etc.

I see that someone else in this forum has already done this, but it's not working for me. Lets call my sites A, B, and C.

First I set up A<->B, with A as the server and B as the client. This created reds1 devices on both ends. OSPF works and traffic is flowing correctly.

Then I set up A<->C, with A as the server and C as the client. This created reds2 devices on both ends (which I thought a little strange as C didn't have a reds1 yet).

Then I tried to set up B<->C, with B as the server and C as the client. On B this created reds2 device, but when I tried to create the RED interface on C, it told me that the tunnelID is already in use. Does the client inherit the tunnel ID from the server? There is no opportunity to set it on the client in the GUI, but it isn't in the configuration file either.

I assume I can fix this by manually setting the tunnel ID on B, but I'd like confirmation of the above.

Thanks

James