Software-defined networking technology is a way to network configuration which allows programmatically scalable, dynamic network configuration, allowing it to more closely resemble cloud computing rather than traditional network configuration. With software-defined networks, the hardware and software have been standardized so there is no need to go through the process of buying or implementing multiple devices. In most cases, this is accomplished by using the Open-Closed standard, which is a collection of Open Source Hardware and Software which have been standardized to ensure compatibility. Because the infrastructure can be changed easily, the flexibility and the cost savings are also provided by using this type of network.
Unlike other types of networks, software-defined networking have the ability to be configured in various ways, such as routing or forwarding. This allows for different kinds of traffic to have different addresses, and therefore different network paths to be configured. In addition, with software-defined networks, you can have multiple virtual switches, instead of just having one physical switch on the network, which greatly increases the bandwidth.
With software-defined networks, the infrastructure is also much less expensive than the traditional networks, since it doesn’t have to be purchased through an equipment manufacturer. For example, if a company has five servers that are connected via an Ethernet link to a central data server, then purchasing this kind of network would be very expensive. However, when there are fewer servers connected to the central server, this will reduce the cost.
Companies will often use this type of networking in order to have their network configurations and security in place at all times, so that all of their servers are always functioning in a reliable manner, rather than just during off hours. Also, they can use the software-defined networks to configure firewalls and anti-virus systems, so that even if the system is not being used for internal purposes, all of the computers connected to it have the same level of protection.
Companies also use software-defined networks for their network applications. For example, instead of having to buy a large amount of software licenses and have them customized to the size and number of computers, many companies use open source software for their applications. Many people are now using these kinds of networks, because they are easy to install, easy to manage, and cheaper than their other network counterparts.
Although these kinds of networks are relatively new, many companies are already using them. In fact, Cisco is a leading provider of this kind of network, and one of the reasons why is because of their Open-Closed technology. Other companies, such as Juniper Networks, also offer open-closed solutions to provide a flexible software-defined network and are able to offer them in many different areas of the world including the United States, Europe and Asia.