Comparison of Software Defined Networking with Traditional Networking

Abstract

The Internet has caused the advent of a digital society; wherein almost everything is connected and available from any place. Thus, regardless of their extensive adoption, traditional IP networks are yet complicated and arduous to operate. Therefore, there is difficulty in configuring the network in line with the predefined procedures and responding to the load modifications and faults through network reconfiguring. The current networks are likewise vertically incorporated to make matters far more complicated: the control and data planes are bundled collectively. Software-Defined Networking (SDN) is an emerging concept which aims to change this situation by breaking vertical incorporation, promoting the logical centralization of the network control, separating the network control logic from the basic switches and routers, and enabling the network programming. The segregation of concerns identified between the policies concept of network, their implementation in hardware switching and data forwarding is essential to the flexibility required: SDN makes it less complicated and facilitates to make and introduce new concepts in networking through breaking the issue of the network control into tractable parts, simplifies the network management and facilitate the development of the network. In this paper, the SDN is reviewed; it introduces SDN, explaining its core concepts, how it varies from traditional networking, and its architecture principles. Furthermore, we presented the crucial advantages and challenges of SDN, focusing on scalability, security, flexibility, and performance. Finally, a brief conclusion of SDN is revised.

Designing a RESTful Northbound Interface for Incompatible Software Defined Network Controllers

“…SDN is a programmable control network approach designed to overcome limitations of traditional networks, such as complex network management and lack of scalability [9]. In SDN, network control functions are moved from the data plane to software called a controller.…”

Investigating the Impact of Tree-Based Network Topology on the SDN Controller Performance

“…The results show that FloodLight, Beacon, and MUL obtained minimum latency, while Beacon performed good results in the throughput test. Authors in [16] presented the crucial advantages and challenges of SDN security, flexibility, and performance against traditional TCP/IP networks.…”

Novel Path Counting-Based Method for Fractal Dimension Estimation of the Ultra-Dense Networks

“…For example, user service structures in the area of operation of the base station, base station service structures, micro, mini, and macro cloud services organization structures, transport network organization structures, and others [12]. When organizing software-configurable networks, e.g., the cores of a 5G network, such typical structures arise, e.g., the structures of networks serviced by various controllers and orchestrators [13,14].…”