bonded interface.The behavior of the bonded interfaces depends upon the mode; generally speaking, modes provide either hot standby or load balancing services.
Additionally, link integrity monitoring may be performed.
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
Configuring your network interfaces and modules
You need to edit /etc/network/interfaces file and make it looks like
sudo nano /etc/network/interfaces
Add the following (This is just example enter you ip details)
# 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
iface lo inet loopback
# The primary network interface
iface eth0 inet static
iface eth1 inet manual
iface eth2 inet manual
iface bond0 inet static
up /sbin/ifenslave bond0 eth1 eth2
down /sbin/ifenslave -d bond0 eth1 eth2
Save and exit the file
Now you need to edit /etc/modprobe.d/aliases.conf file
sudo nano /etc/modprobe.d/aliases.conf
Add the following lines
alias bond0 bonding
options mode=0 miimon=100 downdelay=200 updelay=200
Save and exit the file
If you want more details about modes
mode=0 (balance-rr) Round-robin policy: Transmit packets in sequential order from the first available slave through the last. This mode provides load balancing and fault tolerance.
mode=1 (active-backup) Active-backup policy: Only one slave in the bond is active. A different slave becomes active if, and only if, the active slave fails. The bond's MAC address is externally visible on only one port (network adapter) to avoid confusing the switch. This mode provides fault tolerance. The primary option affects the behavior of this mode.
mode=2 (balance-xor) XOR policy: Transmit based on [(source MAC address XOR'd with destination MAC address) modulo slave count]. This selects the same slave for each destination MAC address. This mode provides load balancing and fault tolerance.
mode=3 (broadcast) Broadcast policy: transmits everything on all slave interfaces. This mode provides fault tolerance.
mode=4 (802.3ad) IEEE 802.3ad Dynamic link aggregation. Creates aggregation groups that share the same speed and duplex settings. Utilizes all slaves in the active aggregator according to the 802.3ad specification.
* Ethtool support in the base drivers for retrieving the speed and duplex of each slave.
* A switch that supports IEEE 802.3ad Dynamic link aggregation. Most switches will require some type of configuration to enable 802.3ad mode.
mode=5 (balance-tlb) Adaptive transmit load balancing: channel bonding that does not require any special switch support. The outgoing traffic is distributed according to the current load (computed relative to the speed) on each slave. Incoming traffic is received by the current slave. If the receiving slave fails, another slave takes over the MAC address of the failed receiving slave.
* Prerequisite: Ethtool support in the base drivers for retrieving the speed of each slave.
mode=6 (balance-alb) Adaptive load balancing: includes balance-tlb plus receive load balancing (rlb) for IPV4 traffic, and does not require any special switch support. The receive load balancing is achieved by ARP negotiation. The bonding driver intercepts the ARP Replies sent by the local system on their way out and overwrites the source hardware address with the unique hardware address of one of the slaves in the bond such that different peers use different hardware addresses for the server.
Restart network services using the following command
sudo /etc/init.d/networking restart
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