Just an update. Sorry for long delay I was very ill.
In the end, I hired someone on FIVERR and he talked me through and got it working by taking the modem out of Bridge mode and just using CLASS A private for the internal network and the default Class C private network on the modem. The fiber modems here are not great. They are old and the firmware isn't that easy to figure out and although I can get by in Thai, my ability is not to where I can have a troubleshooting dialog with a technician :-).
Thank you for your time and interest - it was helpful and pointed me in the right direction.
Out of curiousity - is there any particular advantage one way or the other to using bridge mode vs. router mode for the modems? My use cases have no super high bandwidth or latency requirements.
My next step is failover and load balancing. I will look through the tutorila section first.
THanks to both of patient0 and meyergru.
Anthony
In the end, I hired someone on FIVERR and he talked me through and got it working by taking the modem out of Bridge mode and just using CLASS A private for the internal network and the default Class C private network on the modem. The fiber modems here are not great. They are old and the firmware isn't that easy to figure out and although I can get by in Thai, my ability is not to where I can have a troubleshooting dialog with a technician :-).
Thank you for your time and interest - it was helpful and pointed me in the right direction.
Out of curiousity - is there any particular advantage one way or the other to using bridge mode vs. router mode for the modems? My use cases have no super high bandwidth or latency requirements.
My next step is failover and load balancing. I will look through the tutorila section first.
THanks to both of patient0 and meyergru.
Anthony