eth1 connection of two servers in Debian

In order of connect two Debian servers  to comminucate through eth1 connect them using ethernet cable and use these settings in /etc/network/interfaces


===
backend

auto eth1
iface eth1 inet static
        address 192.168.1.1
        netmask 255.255.255.0
        mtu 9000


======
frontend

auto eth1
iface eth1 inet static
        address 192.168.1.2
        netmask 255.255.255.0
        mtu 9000