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Implementing Cisco Networking Solutions
Implementing Cisco Networking Solutions

Implementing Cisco Networking Solutions: Configure, implement, and manage complex network designs

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Implementing Cisco Networking Solutions

Chapter 2. Networks for Digital Enterprises

"The world is changing very fast. Big will not beat small anymore. It will be the fast beating the slow."

- Rupert Murdoch

We all live in a world today where the boundaries between the physical world and the digital world are blurred. Today's world is more digital than physical, where even the machines have networking requirements. This digitization has helped create opportunities and has great promise to change our everyday lives.

In this chapter, we will discuss the following topics:

  • The requirements for changing business models on the underlying network infrastructure
  • The enabling technologies for digitization
  • Cisco's architectural framework (Digital Network Architecture)
  • Different aspects of the network infrastructure

The impact of technology on business


The world is changing, and changing fast. We have seen so much technological innovation in the last decade that we might not have witnessed in the previous century. This rapid growth has impacted all spheres of our lives, and has changed the way we communicate and interact with other people, even machines; it has changed the way we conduct business with our partners and customers; it has changed our lifestyles, changing the definition of luxury and necessity.

We have seen conventional business models being toppled by new innovative business models; for example, Uber is changing the way we have recognized the taxi industry for centuries. We have seen an evolution of highly profitable new companies that own minimal assets, for example, online shopping giants such as Alibaba, Amazon, e-bay, and Airbnb. There has also been a change in the way new customers are being acquired through targeted marketing in near real-time, by analyzing their preferences and historical...

A digital-ready infrastructure


"It is not the beauty of a building you should look at; it's the construction of the foundation that will stand the test of time."

- David Allan Coe

Enterprises need to build on a foundation that can help innovate at speed, keep up with change, and prepare them for what can come in the future. Digital transformation requires a digital-ready infrastructure, which is simple, intelligent, automated, and secure. There are multiple elements of the digitization infrastructure of an organization as we will see in Figure 1 next. We can broadly classify the infrastructure into three parts:

  • A host of input and output systems that interact with the human world. This would include IoT systems (such as wearable sensors, the sensors in vehicles, homes, and manufacturing plants), mobile systems, CCTV cameras, and environmental sensors.
  • The underlying network infrastructure that carries the data from the I/O systems to the processing centers and back to the I/O ecosystem. This...

Facets of a digital infrastructure


We have discussed how networks should behave, and the services that a network should deliver for a new age IT infrastructure. This section talks about network design requirements and the various characteristics that should be considered while designing and implementing a network. Most of these have been the basic guiding principles even before the digitization wave, which shows that these principles have stood the test of time. A network that has to meet the requirements of a dynamic organization, however, has new principles that need to be considered such as agility and programmability. This section focuses on the different parameters that can be used to measure the effectiveness of the network design.

Functionality

"The function of design is letting design function."

- Micha Commeren

Functionality is the quality or state of being functional. It is the most essential element of network design. The primary function of network design is to meet the requirements...

Cisco Digital Network Architecture


Cisco has been at the leading edge of networking and enabling its customers to adopt technologies that help them prepare for the future. In the wave of digitization, SDN, NFV, cloud adoption, analytics and orchestration, Cisco has come out with an architecture called the Digital Network Architecture.

Cisco's Digital Network Architecture (DNA) is an open, extensible, software-driven architecture that accelerates and simplifies your enterprise network operations. The fundamental principle of DNA is to enable a software-centric network infrastructure that can be changed to meet business needs.

Cisco's DNA delivers the same consistent experience to wired users, wireless users, and remote VPN users, and uses advanced analytics to provide rich insights into the network.

Cisco's DNA is based on the following key pillars:

  • Virtualization: Cisco brings Network Function Virtualization (NFV) to the enterprise branch and provides the flexibility to run not only Cisco's...

Summary


In this chapter, we discussed the changing role of networks in a digital world, the various challenges faced by networks because of dynamic business environments, and how networks can be adapted to these challenges by using a structured approach to network design.

We looked at the different characteristics of good network design and what they mean from an operations perspective.

In the next chapter, we will delve deeper into how to accommodate the desirable characteristics while designing the network. We will cover the different parts of an organization's IT network and discuss the functions of each part of the network before we drill down into each part individually in later chapters.

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Key benefits

  • Implement Cisco's networking solutions on datacenters and wirelessly, Cloud, Security, and Mobility
  • Leverage Cisco IOS to manage network infrastructures.
  • A practical guide that will show how to troubleshoot common issues on the network.

Description

Most enterprises use Cisco networking equipment to design and implement their networks. However, some networks outperform networks in other enterprises in terms of performance and meeting new business demands, because they were designed with a visionary approach. The book starts by describing the various stages in the network lifecycle and covers the plan, build, and operate phases. It covers topics that will help network engineers capture requirements, choose the right technology, design and implement the network, and finally manage and operate the network. It divides the overall network into its constituents depending upon functionality, and describe the technologies used and the design considerations for each functional area. The areas covered include the campus wired network, wireless access network, WAN choices, datacenter technologies, and security technologies. It also discusses the need to identify business-critical applications on the network, and how to prioritize these applications by deploying QoS on the network. Each topic provides the technology choices, and the scenario, involved in choosing each technology, and provides configuration guidelines for configuring and implementing solutions in enterprise networks.

Who is this book for?

This book is targeted at network designers and IT engineers who are involved in designing, configuring, and operating enterprise networks, and are in taking decisions to make the necessary network changes to meet newer business needs such as evaluating new technology choices, enterprise growth, and adding new services on the network. The reader is expected to have a general understanding of the fundamentals of networking, including the OSI stack and IP addressing.

What you will learn

  • Understand the network lifecycle approach
  • Get to know what makes a good network design
  • Design components and technology choices at various places in the network (PINS)
  • Work on sample configurations for network devices in the LAN/ WAN/ DC, and the wireless domain
  • Get familiar with the configurations and best practices for securing the network
  • Explore best practices for network operations

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Sep 29, 2017
Length: 436 pages
Edition : 1st
Language : English
ISBN-13 : 9781787121782
Vendor :
Cisco
Concepts :
Tools :

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Product Details

Publication date : Sep 29, 2017
Length: 436 pages
Edition : 1st
Language : English
ISBN-13 : 9781787121782
Vendor :
Cisco
Concepts :
Tools :

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Table of Contents

11 Chapters
Network Building Essentials Chevron down icon Chevron up icon
Networks for Digital Enterprises Chevron down icon Chevron up icon
Components of the Enterprise Network Chevron down icon Chevron up icon
Understanding and Configuring Campus Network Technologies Chevron down icon Chevron up icon
Understanding and Configuring Wireless Access Technologies Chevron down icon Chevron up icon
Understanding and Configuring WAN Technologies Chevron down icon Chevron up icon
Understanding and Configuring Data Center Technologies Chevron down icon Chevron up icon
Understanding and Configuring Network Security Chevron down icon Chevron up icon
Understanding and Configuring Quality of Service Chevron down icon Chevron up icon
A Systematic Approach to Network Management Chevron down icon Chevron up icon
Basic Troubleshooting Skills and Techniques Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.7
(3 Ratings)
5 star 66.7%
4 star 33.3%
3 star 0%
2 star 0%
1 star 0%
Anirudh Nov 23, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
A great read for all networking professionals ! Harpreet has used his tons of industry experience to make the book a great asset to keep ! A must buy.
Amazon Verified review Amazon
Timotheous Welch Apr 07, 2019
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The book is excellent for anyone willing to understand networking from the ground up. It offers scenarios with realistic solutions. Leaned primarily towards CISCO systems, the technologies recommended are relevant for the time of this writing. A recommended book for beginners and intermediates.
Amazon Verified review Amazon
Consty Jan 23, 2021
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
It is more academical that practical. Good resource for student, but not for professional who is on the field or production.
Amazon Verified review Amazon
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