What is a network virtualization?

Network virtualization is a method used to combine computer network sources into one platform known as a virtual network . This is achieved by software and services that allow storage, bandwidth, applications and other network sources. The technology uses a method of similar viralization process used to simulate virtual machines on physical computers. The virtual network treats all the hardware and software in the network as the only collection of resources that can be accessed regardless of the physical boundaries. To put it simply, the network virtualization allows each authorized user to share network resources from one computer.

There are two forms of network virtualization, external and internal. External virtualization generally combines multiple networks - or parts of networks - into a single virtual entity. Internal virtualization provides sharing the entire system and other network functions of software containers, WHICH act as a host environment for network software components on a single physical systemu. External variety is the most commonly used method to create virtual networks. Sellers who distribute these virtualization tools usually offer one or the other form.

network virtualization is not a whole new concept. In fact, virtual private networks (VPN) networks have been widely used for years. Virtual networks of local areas (VLAN) also represent a common variant of network virtualization. Both serve as examples of how significant progress in computer connection methods allowed networks to be no longer limited by geographical lines.

Organizations can use network virtualization for many reasons, but many do this because it allows adaptation and easy use of the network. Virtualization can provide adapted accesss that allow administrators to allocate critical network services such as bandwidth and service quality (QoS). Can also provide konsolidation by allowing to combine the amount of physical networks into a single virtual network, allowing simplified and simplified management.

network virtualization has certain disadvantages. Perhaps the most remarkable is that, like the virtualization of the server, in addition to performance control, it can bring a higher degree of complexity. It also tends to require higher skills by network administrators.

Successful network virtualization requires thoughtful planning. This is mainly because it was not as widely deployed as traditional hardware virtualization, a concept that dates back to the 1960s. Many organizations have decided to plan and implement the technology in phases and often decided to start with insignificant aspects of IT environments. This strategy is timely used to minimize disruption and allow the organization to determine the value in virtualization before its deployment across the network.