As telecom operators and network operators move to the carrier cloud architecture, they are looking for a cost-effective solution to virtualize workloads on industry-standard servers. Virtualization has been established as a mature and reliable technology that can be used to enhance the capacity, management, and efficiency of data center servers and storage systems. The next logical step is through the so-called Network Function Virtualization (NFV). Implement network virtualization. According to the NFV architecture concept, all categories of network node functions can be virtualized into a number of connected components to create communication services.
Like server and storage virtualization, NFV gives data center operators the flexibility to re-migrate various network functions in dedicated devices to high-capacity servers, switches, and storage devices that meet industry standards. NFV can make networks more flexible, cost-effective, scalable, and secure, enabling organizations to quickly deploy new services and gain a competitive advantage.
NFV provides flexibility through network intelligence through the necessary software programming. Network devices that can be virtualized include firewalls, session border controllers, wireless access network nodes, and WAN acceleration devices. With virtualization, operators can adjust the capacity and specifications of such devices (depending on their use). When demand changes, NFV can make it scalable by allowing operators to increase or decrease network capacity. With scalability, operators can also adjust their network architecture in multiple ways (even between multiple data centers anywhere in the world), only through physical data center assets. can not achieve.
Like other virtualization environments, NFV provides a cost-effective option for investment in specialized hardware applications, enabling it to run on industry-standard but lower-cost hardware and intelligently through virtual hypervisors. application. In addition, operators can manage virtual systems through software, saving on electricity bills and hardware maintenance costs, and further reducing operating costs. Data center space is also optimized due to the reduced amount of hardware used by operators.
Further cost savings and more benefits are possible, but it depends on how the NFV is implemented; either by using a server CPU or by combining server-class CPUs with best-in-class networking technologies. Not only does the software originally applied solve the problems of most network workloads, but the use of IT-compliant hardware limits the applicability of NFV to a few applications. Subsequent approaches (that is, processing and accelerating the hybrid model of hardware) not only improve power efficiency, but also meet the performance needs of operators and service providers, while also significantly reducing costs.
A particularly important strategic implication for companies is that NFV is a way to help companies stay competitive. NFV significantly shortens the time it takes to bring products to market in order to provide customers with innovative new services and to try out low-risk trial services, so that subsequent businesses can achieve a higher return on investment.
At present, the more and more important issue is data security, but NFV makes it easier to solve this problem. For cloud service providers, NFV provides a powerful and easy-to-use way to run virtual networks, enabling faster deployment of critical security performance upgrades, allowing customers to securely migrate their computing to the cloud. Several cloud service providers have deployed a service called Zero Knowledge security, in which only their customers have keys to decrypt stored data.
NFVs are often associated with the concept of Software Defined Networks (SDN), but they complement each other and are independent of each other. SDN simplifies the network by separating the control layer of the network (which determines where the traffic flows) and the data layer (which forwards the data to the underlying system of the selected destination). NFV is a porting feature specifically for specific virtualized network devices.
The Industry Standards Organization, the European Telecommunications Standards Institute (ETSI), established the NFV Industry Specification Group (ISG). The team's members include more than 200 service providers, telecommunications companies and IT companies worldwide. ISG's mission is to develop common industry standards that are compliant with NFV and SDN technologies. At the same time, the Open Network Foundation (ONF) is working hard to promote the development of SDN and NFV.
About the Author:
Rajiv Ramaswami
Executive Vice President and General Manager, Broadcom Infrastructure and Network Group
Rajiv Ramaswami is currently Executive Vice President and General Manager of Broadcom Infrastructure and Networking Group (ING). In this role, he is responsible for all of Broadcom's Ethernet-based solutions, including switches, physical layer solutions, processors, controllers, microwaves, security and automotive.
Prior to joining Broadcom, Ramaswami served as Vice President and General Manager of the Cisco Systems Cloud Services and Switching Technology Group. Prior to joining Cisco, he held various technical and leadership positions at Xros, Tellabs and IBM's TJ Watson Research Center.
Ramaswami holds a master's and doctorate in electrical engineering from the University of California at Berkeley and a bachelor's degree in technology from the Indian Institute of Technology, Madras.
Ramaswami has 33 US patents (mainly in the field of fiber optic networks) and co-authored the book Optical Network: A Practical Perspective. He is a member of the IEEE and an outstanding alumnus of Indian Institute of Technology Madras.
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