Fonte: http://www.how2centos.com/centos-6-channel-bonding/

CentOS 6 Channel Bonding

OCTOBER 28, 2011 16 COMMENTS

CentOS 6 Channel Bonding allows administrators to bind multiple network interfaces together into a single channel using the bonding kernel module and a special network interface called a channel bonding interface. Channel bonding enables two or more network interfaces to act as one, simultaneously increasing the bandwidth and providing redundancy.

CentOS 6 Channel Bonding

Channel bonding (also known as “Ethernet bonding”) is a computer networking arrangement in which two or more network interfaces on a host computer are combined for redundancy or increased throughput.

mode=0 (Balance-rr) – This mode provides load balancing and fault tolerance.

mode=1 (active-backup) – This mode provides fault tolerance.

mode=2 (balance-xor) – This mode provides load balancing and fault tolerance.

mode=3 (broadcast) – This mode provides fault tolerance.

mode=4 (802.3ad) – This mode provides load balancing and fault tolerance.

mode=5 (balance-tlb) – Prerequisite: Ethtool support in the base drivers for retrieving the speed of each slave.

mode=6 (balance-alb) – Prerequisite: Ethtool support in the base drivers for retrieving the speed of each slave.

Note: Always append extra configuration in case of a rollback.

Configuring Channel Bonding

# cd /etc/sysconfig/network-scripts/

# vi ifcfg-bond0

We’ll be using mode=6 (balance-alb)