I know I have read that access to the web admin is not possible via the internet with IP passthrough active unless using IC2. Is there a method of accessing the admin connecting directly to the BR1 on one of the LAN ports? Is there any other method than IC2?
I have an regular ISP connected to the WAN port of the BR1. The router is then connected to LAN port 1. ISP Pass Through is set for both the primary ISP and the cellular network. Looking at your examples, it appears they mostly relate to when the BR1 is operating via the cellular network. I have looked at connecting to the BR1 thru the router when the primary ISP is operating but I have not figured that out as I do not know what the IP address of the BR1 is during that stage. To do the other methods you are suggesting, it appears I need to disconnect the router to have my computer pickup the pass through IP which would shut down the LAN.
Am I missing a step or a critical detail in order for this to be successful?
Just to confirm , you have 2 WANs connected for the BR1 as below ?
Cellular WAN (Standby) –
… BR1 – LAN <----> DHCP WAN -Router – PC
Ethernet WAN (Active) –
If yes you still able to manage the BR1 using the BR1 LAN IP address (IP address configured for LAN interface) although Ethernet WAN is fail and router WAN IP is changed using cellular network assigned IP address.
Else if this is not the case, do share us the detail setup for the BR1 and we can further this again.
In my experience, IP Passthrough works great!
We generally use this mode with Pepwave BR1s connected to a Balance.
We have found that if we put an outbound rule on the balance of all traffic to 192.168.50.1 (assuming you have left the default settings on the BR1) forced to that WAN, you can access the BR1 even though it has taken on the ISPs IP for forwarding to the Balance
These are the same issue. Your USG is not routing (or is actively dropping) traffic to the 192.168.50.0/24 address space. Put the BR1 back into NAT mode. Connect a Laptop to it, make sure you’ve got internet access. If you do, fix the USG config so that the BR1 in NAT mode works and you get internet access via the USG too.
Then once that’s working, change the BR1 to passthrough mode and you should then still be able to access the BR1’s web ui.
I have several sites with similar setup and hardware. I am able to reach the BR1 on it’s LAN IP from my UniFi LAN regardless of IP Passthrough mode. The 192.168.50.0/24 is directly connected to the USG and should not require a static route of any kind. I suspect your static route is causing problems and you should delete it. Also, you now indicate that your original problem has been resolved, as you can now ping 192.168.50.1, which was the reason for post? It sounds like you have network configuration errors unrelated to IP Passthrough.
Turn IP Passthrough off and 1st establish internet access and router access from the USG LAN. Once you have done this, enable IP Passthrough to obtain a public IP on the USG WAN and eliminate double NAT.
Normally when I look at a router the gateway address usually ends as .1. But in this screenshot it is one number above the IP address. .186 instead of .185. Can anyone explain why the IP address and the gateway address are off by one?
Some carriers use /31 subnets as they save address space and make communications with the gateway very tidy. This is explained here. Some carriers use it; some do not.