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What is SDN Controller

Social, Legal, and Ethical Implications of IoT, Cloud, and Edge Computing Technologies
Central part of the SDN control plane. Through the southbound interfaces, it interacts with SDN network elements through APIs to get notifications about new traffic flows and network changes, and to install forwarding rules in the switches. Through the northbound interfaces, it receives the network behavior needed by applications, translating it to instructions to network elements.
Published in Chapter:
Software-Defined Networking: An Architectural Enabler for the IoT
Víctor M. López Millán (Universidad CEU San Pablo, Spain)
DOI: 10.4018/978-1-7998-3817-3.ch001
Abstract
The connection of billions of devices to the internet poses numerous challenges to the networking infrastructure. The traditional networking paradigm is anticipated to be unable to cope with a scenario of myriad heterogenous devices connected through both wireless and wired links. The mobility and instability of a significant portion of the devices of the IoT demand a flexible and agile response of the network to adapt and keep the appropriate policies in effect. Software-defined networking (SDN) moves the intelligence of the network to a central controller with a global vision of the network capable of issuing timely instructions to the network nodes to accommodate the constant changes. This chapter presents the SDN paradigm, covering its architecture, functional blocks, interfaces, and protocols. The focus is put on the application of SDN to IoT environments supporting different applications, each with its specific difficulties, exploring current trends to tackle the identified challenges.
Full Text Chapter Download: US $37.50 Add to Cart
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Automation of Network Services for the Future Internet
Is a key component of the SDN architecture. It is in charge of a set of network elements. It has standard South Bound Interfaces to communicate with network elements. It also has a North Bound Interface to communicate with the SDN orchestrator and the OSS.
Full Text Chapter Download: US $37.50 Add to Cart
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