In and various devices to find out the required

In today’s smart world, IoT has come up with a special tag
of futuristic technology, which is inclusive of embedded devices interconnected
together to perform various tasks. The time is not far when IoT will take
control of our daily activities. But as we know nothing interesting is ever completely
one sided. On one end where IoT supports heterogenous methods of communication,
on another already existed network is surging data limit. Hence, to overcome
these challenges we have proposed a framework and various devices to find out
the required solution.

Sensors and RF devices are coupled with this framework to
collect more information and process them to cloud. In addition, SDN deployment
will enable IoT to share resources more efficiently. Here “SDN” stands for
Software Defined Network. It is a gradually evolving approach, which makes
network more flexible. Further it has capability to program the behavior of
network devices. An SDN program has two distinct layers: Control layer and Data
layer. The control layer consists of controller, which is used to send signals
and process them while data layer consists of Open flow platform, which handles
the flow of network data. This platform use low level API called northbound and
southbound API’s which initiates the communication using TCP/IP protocol.

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SDN architecture runs on Linux kernels. For efficient data
processing we have deduced a simple hardware. SDN aims to receive these data
using end sensors. To improve its standards, these devices work on specific
protocols mentioned in OF enabled devices. These device management point
supports plug and play mode defined in kernels. The separation of its cores
extends its ability to provide communication between IoT and OF enabled switch.
This hardware device employs increased performance and security by including
core libraries and virtual machine. Instead of enforcing policies, vendors are
required to adhere with its standards to create applications using framework
libraries.

SDN is responsible for providing effective cloud computing
to both provider and customer. In fact, to achieve this OF switch uses open
flow protocol to communicate with gateway controller. However, there can be
many controllers in single domain in case of failure. To provide optimal flow
of data, management devices use different protocol for different stages. For
example, for short range distances it uses Bluetooth Low Energy technology. On
the other hand, it uses 6LowPAN for devices, which are at larger distance and
has low wireless energy. Apparently, it uses ZigBee, Zwave and Wi-Fi for household
and small applications where data rate is generally less.

 

 

The main objective of coupling SDN devices with IoT was to
customize the network depending upon the need. For this to happen, system
follows specific events in sequential order. It all starts with IoT sending
data to OF enabled devices. This data is usually secured using SSL or any other
protocol. Hereafter SDN follows approach of sending data to drivers followed by
encryption and decryption. When data source begins communication, data manager
converts data into application readable format and process it accordingly. For
example, after forwarding the data to cloud it takes action depending upon
forwarding table. After receiving data on load, controller securely forwards
the data to wild network thereafter processing it in specific location.

In conclusion, Impact of Open Flow based SDN
along with IoT can overcome limitations of cloud computing environment. With
SDN we can control data flow traffic through a single programmable interface
without the need of routing protocol instances.

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