You have to install ifenslave, it is a tool to attach and detach slave network interfaces to a bonding device.

sudo apt-get install ifenslave

Interface Configuration on /etc/network/interfaces:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

# For bonding
auto bond0
iface bond0 inet dhcp
slaves all

# LACP config
bond-mode 4
bond-miimon 100
bond-lacp-rate 1

Create the file: /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0
BONDING_OPTS="mode=4 miimon=500 lacp-rate=1" #mode=4 is LACP(802.3ad)
BOOTPROTO=none
ONBOOT=yes
USERCTL=no
PEERDNS=no
IPV6INIT=no
NM_CONTROLLED=no
TYPE=Ethernet
NETMASK=255.255.255.0
IPADDR=172.16.0.6
GATEWAY=172.16.0.1
DNS1=8.8.8.8
DNS2=8.8.4.4

Then, for each interface (network card) you want to bond to the bond0 interface, edit the respective device’s configuration file: /etc/sysconfig/network-scripts/ifcfg-[interface] (e.g., eth0, eth1, ra0)

DEVICE=eth0
MASTER=bond0
SLAVE=yes
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
PEERDNS=no
IPV6INIT=no
NM_CONTROLLED=no
TYPE=Ethernet

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