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Office network failover?

I have a office LAN providing internet access to several workstations, each workstation it is basically connected to the hub that it is connected to the router through ethernet.

What I need to do is to hire another provider and enable any method to switch users internet connection if the active connection go down, but how can I do it? any suggestion?no idea, I guess I should use any specific router or hardware for the failover, anyway I don't know where to start.

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Your question already got migrated here from StackOverflow - no need to re-post like this. – ErikA Jan 30 at 3:57
Whow. You still have hubs? where did you find them? Garbage bin? Not seen hubs for many many years - ever since switches are sooo cheap now. – TomTom Jan 30 at 6:23
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closed as exact duplicate by ErikA, Miles Erickson, Ward, pauska, Sam♦ Jan 30 at 7:57

This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question. See the FAQ for guidance on how to improve it.

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You need either a router/firewall that capable of detecting failure on one of the lines and switch users to the other one or workstation with Linux on it acting as the same router/firewall.

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You need to find a dual WAN router. If you google that, you will find a lot of options that allow for failover for a reasonable price.

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