Internet-scale will be doubled every 100 days, customers want to get 7 days 24 hours non-stop availability and faster system response time, rather than a site repeatedly to see “Server Too Busy” and frequent system failure.
The core of the network in various parts, with the increased traffic, access traffic and rapid growth in data traffic, its processing capacity and computational intensity will also increase accordingly, allowing a single device simply can not afford. In this case, if the existing equipment to do throw a lot of hardware upgrades, which would result in a waste of available resources, and if have to face the next business volume increase, which in turn lead once again the high cost of hardware upgrades inputs, and even superior performance of the device and then can not meet current traffic needs. As a result, load-balancing mechanism came into being.
Load balancing (Load Balance) built on top of existing network infrastructure, which provides a cheap and effective and transparent method of expansion of network equipment and servers, bandwidth, increase throughput, enhance network data processing capability, increase network flexibility and availability of.
