Configure Ethernet Channel Bonding

Configure Ethernet Channel Bonding

1. Why Ethernet channel Bonding?
2. How to

1. Why Ethernet channel Bonding?
Ethernet channel Bonding enable 2 or more Network Interfaces Card (NIC) to single virtual NIC card.
This is a great way to  achive redundant links, fault tolerance or load balancing.

2. HowTo
OS: Ubuntu 13.04

2.1 Installation
apt-get install ifenslave
2.2 Configuration
2.2.1 Check kernel support
vi /etc/modules
loop
lp
rtc
bonding

2.2.2 Enable module
modprobe bonding
2.2.3 Edit interface configuration
vi /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

# eth0 - the first network interface
auto eth0
iface eth0 inet manual
hwaddress ether 00:0c:29:b0:00:80
bond-master bond0
# eth1 - the second network interface
auto eth1
iface eth1 inet manual
hwaddress ether 00:0c:29:b0:00:8a
bond-master bond0

# Network bond for eth0 and eth1
auto bond0
iface bond0 inet static
address 192.168.5.200
netmask 255.255.255.0
gateway 192.168.5.2
bond-mode 1
bond-miimon 100
slaves eth0 eth1
-----------------------------------
Show IP:

2.2.4 Checking bonding interface
cat /proc/net/bonding/bond0

Try to disable one of the NIC, IP: 192.168.5.200 still available,

Enjoy,