Switch between networks

My /etc/network/interfaces:

auto lo
iface lo inet loopback

        mapping eth0
                map ARENALES eth0-arenales
                map AGUERO eth0-aguero

        iface eth0-arenales inet static
                address 10.120.10.7
                netmask 255.255.255.240
                network 10.120.10.0
                broadcast 10.120.10.15
                gateway 10.120.10.1
                dns-nameservers 10.120.10.1

        iface eth0-aguero inet dhcp

# EoF #

Exceute this to setup the network on each network:

sudo ifup eth0=eth0-arenales
sudo ifup eth0=eth0-aguero