Book Image

Edge Computing Patterns for Solution Architects

By : Ashok Iyengar, Joseph Pearson
Book Image

Edge Computing Patterns for Solution Architects

By: Ashok Iyengar, Joseph Pearson

Overview of this book

Enriched with insights from a hyperscaler’s perspective, Edge Computing Patterns for Solution Architects will prepare you for seamless collaboration with communication service providers (CSPs) and device manufacturers and help you in making the pivotal choice between cloud-out and edge-in approaches. This book presents industry-specific use cases that shape tailored edge solutions, addressing non-functional requirements to unlock the potential of standard edge components. As you progress, you’ll navigate the archetypes of edge solution architecture from the basics to network edge and end-to-end configurations. You’ll also discover the weight of data and the power of automation for scale and immerse yourself in the edge mantra of low latency and high bandwidth, absorbing invaluable do's and don'ts from real-world experiences. Recommended practices, honed through practical insights, have also been added to guide you in mastering the dynamic realm of edge computing. By the end of this book, you'll have built a comprehensive understanding of edge concepts and terminology and be ready to traverse the evolving edge computing landscape.
Table of Contents (17 chapters)
Free Chapter
1
Part 1:Overview of Edge Computing as a Problem Space
4
Part 2: Solution Architecture Archetypes in Context
8
Part 3: Related Considerations and Concluding Thoughts

Underlay and overlay networks

After all the talk about NFV and SDN, it behooves us to briefly describe underlay and overlay networks. This concept seems to follow the software engineering principle – solve any problem by introducing an extra level of indirection.

Very simply put, an underlay network is the underlying physical infrastructure of the network. An overlay network is a virtual logical network constructed on top of an underlay network using virtualization (see Figure 4.3):

Figure 4.3 – Overlay and underlay networks

Figure 4.3 – Overlay and underlay networks

Routers, switches, firewalls, and servers are devices found in an underlay network, which are interconnected via routing protocols. In an overlay network, which is software-based, data is transmitted via virtual links. Chapter 9 compares the security aspects of underlay and overlay networks. Suffice it to say that overlay networks provide segmentation and isolation, which helps with security. They also simplify the...