Load balancing is the ability to balance traffic
across two or more WAN links by using basic routing. When connections are
initiated for session like Web, email, video streaming etc, the traffic is
distributed over all WAN links. For example, if you have internet service from
two ISPs 10Mbps and 5Mbps respectively, you will now have a total bandwidth of
15Mbps. When browsing the internet your browser will open multiple connections
to the website, each connection will download a different part of the page,
some for images and others for text which makes websites load faster.