Is it possible to set up a VPN with the same subnet at both ends? For example, router 1 FA0/0 interface IP address 10.1.1.10 255.255.255.0, serial interface 192.168.100.1 255.255.255.0. Router 2 FA0/0 interface 10.1.1.20 255.255.255.0, serial interface 192.168.100.2 255.255.255.0. I need to connect the 10.1.1.x subnet through the 192.168.100.x link to connect a remote office to the main office.
Any help will be greatly appreciated.