What is bonding?

Linux networking allows you to combine together or bind together multiple network interfaces into a single interface. This bond interface can be used for interface failover purposes or link aggregation. This GeekyFacts document shows you how to create network bonding in Linux.  We have tested this on Redhat Enterprise Linux & CentOS.

The bonding module:

Most of the Linux variants now already has the bonding module available with it. If not you can download it.  Redhat & CentOS bonding supports 7 possible "modes" for bonded interfaces. These modes determine the way in which traffic sent out of the bonded interface is actually dispersed over the real interfaces. Modes 0, 1, and 2 are by far the most commonly used among them. We have used mode “1” – that is “active-backup” failover configuration.

Terminalogy

Hypervisor

Hypervisor is a thin firmware layer that provides a stable virtualized machine architecture to which an operating system can be written.
It resides in the flas PROM of the motherboard and act as interface between operating system and the hardware.
It provides a set of support fuctions to the operating system, so that the OS does not need to know intimate details of how to
perform fuctions with the hardware.

Logical Domain

Logical domain is a discrete logical grouping with its own operating system, resources and identity within a single computer system.
Each logical domain can be created, destroyed, reconfigured, and rebooted independently, without requiring a power cycle of the
server. We can run a variety of applications software in different logical domains and keep them independent of performance
and security purposes.