I am installing openstack neutron debian 7 from official manual (nodes are virtual machines)

at the very beginning where we have to configure network interfaces, i dont understand how to configure second interface (eth1) for network and compute nodes as tunnel interfaces i just did it normal way and all nodes ping each other (controller, compute, network, eth1 interfaces) is it correct?

##########################CONTROLLER NODE############################

root@controller:/home/controller# cat /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address 192.168.1.11
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4
root@controller:/home/controller# 

**************************NETWORK NODE ******************************

root@network:/home/network# cat /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback


auto eth0
iface eth0 inet static
    address 192.168.1.21
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4

auto eth1
iface eth1 inet static
    address 192.168.2.21
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4

auto eth2
iface eth2 inet manual 
    up ip link set dev $IFACE up
    down ip link set dev $IFACE down
root@network:/home/network# 


$$$$$$$$$$$$$$$$$$$$$$$$$$COMPUTE1 NODE$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

root@compute1:/home/compute1# cat /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address 192.168.1.31
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4


auto eth1 
iface eth1 inet static
    address 192.168.2.31
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4
root@compute1:/home/compute1#