Saturday, February 1, 2020

Cable (using Static IP) internet with LTE backup (using DHCP)

Looking for a device that can connect to both a cable connection ( that has a static IP assigned ) and a LTE 4G cellular modem. The device should be able to automatically fail over the clients from cable to LTE cellular modem. Most of the stuff i find on the internet can do this, but they dont handle a static IP assignment on the cable connection.

If the cable connection with the static IP drop and the system switches over to the cellular connection, its ok if the IP is dynamic on the cellular side. I am just trying to ensure the devices within the network maintain an internet connection.

One device that seems do to this is the cradlepoint ARC CBA850 but i cant tell if it can handle the static IP on the cable side.

There was also mention of using a Mikrotik solution but i didnt see any Mikrotik routers with built in LTE modems.

I have a server handling DHCP and DNS internally, so those features are not needed.



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