I have the following setup at home:
- Wireless ADSL 3Com router connected to internet through ISP and connected to a switch
- Another wireless 3G router connected to the switch as well
The reason i am having 2 routers is to simply to extend the WiFi coverage.
The configuration is as follows:
3Com IP 192.168.1.1 gateweay 192.168.1.1 DHCP enabled 192.168.1.10 - 192.168.1.200
3G router IP 192.168.1.2 gateweay 192.168.1.1 DHCP disabled
This setup is working extremely fine and i can connect from anywhere at home either wired or wireless to the internet.
My question is : Since i have 3G internet connection on the 3G router and i am currently making no use of it. Is there a setup to have 3G internet as automatic backup for the main internet connection, without having to change the gateway address on all machines.