Book Image

IoT and Edge Computing for Architects - Second Edition

By : Perry Lea
Book Image

IoT and Edge Computing for Architects - Second Edition

By: Perry Lea

Overview of this book

Industries are embracing IoT technologies to improve operational expenses, product life, and people's well-being. An architectural guide is needed if you want to traverse the spectrum of technologies needed to build a successful IoT system, whether that's a single device or millions of IoT devices. IoT and Edge Computing for Architects, Second Edition encompasses the entire spectrum of IoT solutions, from IoT sensors to the cloud. It examines modern sensor systems, focusing on their power and functionality. It also looks at communication theory, paying close attention to near-range PAN, including the new Bluetooth® 5.0 specification and mesh networks. Then, the book explores IP-based communication in LAN and WAN, including 802.11ah, 5G LTE cellular, Sigfox, and LoRaWAN. It also explains edge computing, routing and gateways, and their role in fog computing, as well as the messaging protocols of MQTT 5.0 and CoAP. With the data now in internet form, you'll get an understanding of cloud and fog architectures, including the OpenFog standards. The book wraps up the analytics portion with the application of statistical analysis, complex event processing, and deep learning models. The book then concludes by providing a holistic view of IoT security, cryptography, and shell security in addition to software-defined perimeters and blockchains.
Table of Contents (17 chapters)
15
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16
Index

TCP/IP network functions at the edge

Routing refers to the steering of data between multiple clients and networks. For this discussion, we will examine TCP/IP based routing and its applicability on the edge.

Routing functions

The basic function of a router is to bridge connections between network segments. Routing is considered a layer-three function of the OSI standard model because it makes use of the IP address layer to guide packet movement. Essentially, all routers rely on a routing table to guide the flow of data. The routing table is used to find the best match to a packet's destination IP address.

There are several proven algorithms used for efficient routing. One type of routing is dynamic routing, where the algorithms react to changes in the network and topology. Information about the state of the network is shared through a routing protocol on a timed basis or upon a triggered update. Examples of dynamic routing are distance-vector routing and link...