Routing between 2 internet connections

spanout

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Sep 19, 2013
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I have 2 3G connections to y house and wonder how I can set up routers to only pass certain traffic through 1 of the connections and all other traffic through the other. I have a MBR95 Cardlepoint router and the option to add the 2nd 3G network through its WAN interface. I also have a Zoom 3G router . Any advice would be gratefully received
 
Pretty much any true router will be able to do this. What most people call a "router" is actually what is called a gateway in that it can only take traffic from a single subnet lan and pass it t a single wan that it must use nat on.

A common consumer router you see people use is a dual wan router like a cisco rv042. This is rather old though. Your cradlepoint may be able to do it but I am too lazy to go read the manual tonight.

You can in general do this with a router you can load dd-wrt on.

Of course any commercial router even old used cisco have always been able to do this.

this means you would likely have to insert a third router between your 2 3g routers it is not common to get a device than can support 3g modems and run dd-wrt and the commercial cisco routers that can run a 3g/4g modem are extremely limited.

Now if you only have a limited number of PC you can do this with your PC and the ROUTE command. You could put in 1 router say at 192.168.100.1 and the second at 192.168.100.2 and set the default gateway to 192.168.100.1 and then use the route command to send other ip to 192.168.100.2