How Nfv Is Accelerating Innovation For Networks}

Submitted by: Subodh Sharma

Network Functions Virtualization (NFV) is a network architecture that utilizes the concept of virtualization. It reduces the amount of proprietary devices used in network services. It allows dissociating or separating the network functions like firewalls or encryption that are now running on the dedicated hardware devices to be run on the virtual machines (VMs) or Virtual servers. In other words, we can say that it is a new initiative in networking technologies that migrate diverse network functions onto cloud based architecture or virtualized architecture.

It is a building block of VNFs (Virtualized networking functions) that can be summed up to create flexible networking communications. NFV can be deployed by using inexpensive network devices instead of using expensive proprietary hardware.

It increases the service velocity by consolidating network functions onto cloud based or virtualized offerings. By deploying this approach, a network administrator does not require to purchase dedicated devices to create a new service chain. This is because; the capacity or bandwidth of servers can be increased through software. Hence it reduces the capital expenses and avoids the administrator to overprovision their data centers. With Optrums VNF framework and Network Virtualization functions services, one can get the support of scalability, orchestration and elasticity principle for virtualized environments.

Potential features and Benefits of NFV:

Officially, NFV was first emerged in Oct 2012 when ETSI published a white paper of NFV definitions and its goal. With the continuous adoption of cloud environment, a lot of benefits are coming into the real world. Heres the list:

1). Reduces the Operating expenses (OPex) and Capital expenses (CAPex): It uses software to increase the server capacity instead of using dedicated hardware devices. Compared to conventional network, it can deliver a total cost saving of 40%.

2). new services can be easily launched that can increase profitability: Administrators are no longer limited to a single box. They can scale network architecture on multiple servers. It means, they can distribute the network architecture over multiple places.

3). Provides higher flexibility and agile environment: New network can be easily installed and provisioned. If SDN and NFV are deployed together, it creates centralized as well as virtualized network. Through virtualization, remote location support can be made easy and has a significant role.

4). Security: It allows the user to run firewall on their owned space within the network and increase the privacy of the stored data and support tunnel mechanism.

5). Deploy Virtualized solutions and enable Innovation on commercial.

Are Software Defined Networking and Network Functions Virtualization Similar?

SDN and NFV are almost similar in nature as both uses the concept of migrating network functions from hardware to the software enable architecture. According to European Telecommunications Standards Institute (ETSI), SDN mainly focuses on the separation of network control layer (NCL) from its forwarding layer but in case of NFV, it focuses on migrating network functions to virtual environments. Both are compliment of each other and can exist independently. Software Defined Networking was born on the campus network while NFV was created by data center architects and researchers. If we compare both the technology then we will find more differences in their protocols, formalizations, initial applications and much more. Within few years, service providers will expand their business and implement a range of NFV technologies.

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