Link Aggregation + Bonding (Yük Dengeleme) Debian,Ubuntu

apt-get install ifenslave-2.6

modprobe bonding

Debian Link Aggregation (Network Bonding)
Here we are going setup link aggregation for Debian. Your system must have at least 2 network interfaces (but not limited to).
Bonding

Install ifenslave-2.6 package:

apt-get install ifenslave-2.6

Load bonding kernel module:

modprobe bonding

Note that you shouldn't have any configuration for eth0 and eth1, they are attached as slaves for bond0 interface. Network configuration (file /etc/network/interfaces):

auto bond0
iface bond0 inet static
address 192.168.10.14
netmask 255.255.255.0
network 192.168.10.0
broadcast 192.168.10.255
gateway 192.168.10.1

slaves eth0 eth1

# Transmit packets in sequential order
# from the first available slave through
# the last. This mode provides load
# balancing and fault tolerance.
bond-mode balance-rr

# Only one slave in the bond is active.
# A different slave becomes active if,
# and only if, the active slave fails.
#This mode provides fault tolerance.
#bond-mode active-backup

bond-miimon 100
bond-downdelay 200
bond-updelay 200

Once above is complete you need to reboot your server so the network changes take place (that should be faster than bringing up/down network interfaces and restarting networking service).

Bridge
You can use link aggregation with network bridge, for example if you are using lxc / kvm virtualization. Here is network configuration (file /etc/network/interfaces):

auto bond0
iface bond0 inet manual
slaves eth0 eth1
bond-mode balance-rr
bond-miimon 100
bond-downdelay 200
bond-updelay 200

auto br0
iface br0 inet static
address 192.168.10.14
netmask 255.255.255.0
network 192.168.10.0
broadcast 192.168.10.255
gateway 192.168.10.1
bridge_ports bond0
bridge_fd 0
bridge_maxwait 0
bridge_stp off

Network Switch
If your switch supports port trunking you should add the switch ports used by eth0 and eth1 to a single trunk

link : http://mindref.blogspot.com/2011/05/debian-link-aggregation-bonding.html