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IoT (15CS81) KSSEM,CSE Page 1 Module 3 IP as the IoT Network Layer, The Business Case for IP, The need for Optimization, Optimizing IP for IoT, Profiles and Compliances, Application Protocols for IoT, The Transport Layer, IoT Application Transport Methods. Chapter 5 IP as the IoT Network Layer 5.1 The Business Case for IP Data flowing from or to “things” is consumed, controlled, or monitored by data center servers either in the cloud or in locations that may be distributed or centralized. 5.1.1 The Key Advantages of Internet Protocol One of the main differences between traditional information technology (IT) and operational technology (OT) is the lifetime of the underlying technologies and products. Followings are the key advantages of the IP suite for the Internet of Things: 1.Open and standards-based:TheInternet of Things creates a new paradigm in which devices, applications,and users can leverage a large set of devices and functionalities whileguaranteeing interchangeability and interoperability, security, andmanagement. This calls for implementation, validation, and deployment ofopen, standards-based solutions. While many standards developmentorganizations (SDOs) are working on Internet of Things definitions,frameworks, applications, and technologies, none are questioning the roleof the Internet Engineering Task Force (IETF) as the foundation forspecifying and optimizing the network and transport layers. 2.Versatile:Even if physical and data link layers such as Ethernet, Wi-Fi, and cellular are widely adopted, the history of data communications demonstrates that no given wired or wireless technology fits all deployment criteria. Furthermore, communication technologies evolve at a pace faster than the expected 10- to 20-year lifetime of OT solutions. So, the layered IP architecture is well equipped to cope with any type of physical and data link layers. 3.Ubiquitous:All recent operating system releases, from general-purpose computers and servers to lightweight embedded systems (TinyOS, Contiki, and so on), have an integrated dual (IPv4 and IPv6) IP stack that gets enhanced over time. In addition, IoT
IoT (15CS81) KSSEM,CSE Page 2 application protocols in many industrial OT solutions have been updated in recent years to run over IP. While these updates have mostly consisted of IPv4 to this point, recent standardization efforts in several areas are adding IPv6. In fact, IP is the most pervasive protocol when you look at what is supported across the various IoT solutions and industry verticals. 4.Scalable:Adding huge numbers of “things” to private and public infrastructures may require optimizations and design rules specific to the new devices. However, you should realize that this is not very different from the recent evolution of voice and video endpoints integrated over IP. IP has proven before that scalability is one of its strengths.