So the concern is like so many others, to have cellular failover of our security via Smartthings, but it occurred to me that the Works WIth Smartthings cameras for example, the Ring devices, require constant online access to the ring cloud servers to do their job.
Now my cable internet is actually crazy reliable where I live, I know I am VERY lucky in that regard, but I still experience outages due to extreme weather such as hurricanes and tropical storms, floods etc… (I am on high ground thank God!).
I have many other reasons that I would like my entire LAN to stay online in the rare event of a cable internet failure, and I would prefer this to be an automatic failover.
Now I know there are several dual WAN routers on the market, and this is where I am going to throw a wrinkle at ya… I would, and this isn’t a minor preference, but I would MUCH rather prefer a router that is capable of running DD-WRT.
I should probably be asking this on the DD-WRT forum, but I thought folks here might have come up with a solution…
UPDATE: I have answered my own question and want the answer easily findable in this thread, so I am posting it in the first post.
It would appear that DD-WRT has the function I am looking for to allow dual WAN built in, I just need to configure it. It seems like most any router capable of dd-wrt should support this. Other open source advanced router firmware packages such as Tomato will most likely have similar features, and of course, as a last resort, I could have built a SFF Linux host with multiple WAN failover configured as an edge router. But let’s stick with dd-wrt for now…
And I am going to need a cellular modem with a wired ethernet port. Since I am on AT&T this Netgear is a good option.
Of course if your carrier is different, you will need to chose a different modem.