IoT Fundamentals: Networking Technologies, Protocols, and Use Cases for the Internet of Things

Chapter 5. IP as the IoT Network Layer

In Chapter 4, “Connecting Smart Objects,” you learned about the important considerations in creating an IoT network and common protocols employed by smart objects to access and communicate with a network. Chapter 4 focuses on connectivity at Layer 1 (PHY) and Layer 2 (MAC). In this chapter, we move up the protocol stack and extend the conversation to network layer connectivity, which is commonly referred to as Layer 3. Referring back to the Core IoT Functional Stack introduced in Figure 2-7, this chapter covers the network transport layer sublayer that is part of the communications network layer. Alternatively, you can also align this chapter with the network layer of the oneM2M architecture shown in Figure ...