NFV Network Feature Virtualization

    Google and Microsoft have teamed up with telecommunications companies AT&T and British Telecommunications (BT) to produce the next-generation core packet data networks, starting with the border gateway protocol BGP . This is the main dynamic routing protocol, one of the main mechanisms for the functioning of the Internet. It is an essential component in routing traffic over IP networks and is of great importance for the speed of deployment of network services virtualization (Network Function Virtualization / NFV).



    Now one of the frequently discussed topics in the world of computer networks is the topic of NFV - a new, promising technology. It allows you to programmatically create services that are now only available as hardware solutions. Virtualization of network functions allows you to install services there, then and in the amount that is in demand now and in this place. NFV was created with a focus on service providers, with knowledge of the features of the work of service providers and their most pressing problems.

    Benefits of NFV:

    • allows flexible and dynamic provision of new services, while reducing capital and operating costs;
    • replacing equipment with standardized servers and network components does not bind operators to equipment suppliers;
    • reduces operational costs by simplifying the monitoring and administration of operations (all network functions are transferred to a single virtualized infrastructure);
    • quick connection of new users to the network;
    • pays off infrastructure of telecommunication companies.

    When a service provider creates a connection to a new location, there are several devices that must be installed on the network, first of all, a managed router and a Carrier Ethernet demarcation device, which are crucial because they separate the client’s network and the operator’s network. In addition, equipment is added to them, which must be installed to control and manage connections and traffic. In addition to the set of standard equipment already listed above, service providers are often forced to install a number of non-standard devices that are necessary to ensure the client's business tasks. And thus, for a service provider, the procurement and service support of such equipment becomes very time-consuming, moreover, it is hardly possible to plan ahead the load level of this equipment. NFV helps solve this problem by virtualizing network functions in software applications that can be run both on ordinary servers and on virtual machines running on these servers.



    Virtualization technologies allow us to consider all the IT resources of an organization as a set of public services that can be grouped and re-combined to increase efficiency and quickly scale. According to Light Reading, the new model was presented as a project on the Internet Engineering Task Force / IETF, an open international community of designers, scientists, network operators and providers, created by IAB in 1986, which develops Internet protocols and architecture. .

    Commercial implementation of this project is planned for the near future. Google is already using the new model internally. Through a social network for GitHub developers, several companies began work on a project already developed by Google and contributed to it. Their task is to ensure the independence of network operators from suppliers, provide the ability to manage BGP configurations, group and combine routing of software and hardware systems without a long data integration process. According to operators, the GP plays an increasingly important role in building networks using software-configured network (SDN) and virtualization of network services (NFV).



    With an NFV operator, using only one network interface device to differentiate traffic, allow all other functions to be located on the territory of the service provider, and use SDN to simplify and manage this network for the client.

    Telecommunications companies are interested in SDN and NFV, as it provides vendor independence, the ability to implement, easily plan and deploy networks using hardware and software that companies can choose for themselves. The use of off-the-shelf standard equipment and virtualization tools for testing and deployment of new services is carried out in a few minutes, and not in months, as it was before.

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