In the recent past, TCP/IP networks relied on simple distance-vector routing protocols and 32-bit IP addressing. This technology offers limited capacity for growth. Nowadays, network designers must re-tool, circumvent, or completely discard these increasingly obsolete technologies to build networks that can handle fast expansion and continuous change. The Networking distance-learning course investigates and explains networking technologies and their evolution in meeting this demand for scalability.
In terms of networking, scalability refers to the ability to grow and adapt as the industry and technology does. This is difficult to perform without significant effort used to ensure scalability from the outset. For instance, a network may host a smaller company’s e-mail, Internet access, and shared files. It is possible that this company could expand exponentially in a short space of time, and so require more advanced technologies and higher bandwidth, such as streaming video or e-commerce.
A fully scalable internetwork is designed with the future in mind, and should accommodate these new applications without fuss, whereas a poorly designed internetwork will quickly show its age. From a logistic and monetary perspective, businesses cannot afford to completely re-cable and redesign their networks when upgrades or growth is necessary, so a scalable Internetwork is vital.
Good design is key to a network’s capability to scale. Usually, it is poor design, and not an outdated protocol or router, that prevents a network from scaling gracefully. With the correct guidance in the form of a distance learning course these mistakes can be avoided.