CCDE Study Guide

By Marwan Al-shawi
Published Oct 1, 2015 by Cisco Press.

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Description

Sample Content

Updates

Copyright 2016
Dimensions: 7-3/8" x 9-1/8"
Pages: 616
Edition: 1st

eBook
ISBN-10: 0-13-413583-0
ISBN-13: 978-0-13-413583-0

The authoritative, business-driven study resource for the tough CCDE Practical Exam

CCDE Study Guide is written and reviewed by CCDE engineers and helps you to both improve your design skills and to study for and pass the CCDE exam. Network design is an art, combining broad technology knowledge and experience. This book covers a broad number of technologies, protocols and design options, and considerations that can bring these aspects together and show how they can be used and thought about based on different requirements and business goals. Therefore, this book does not attempt to teach foundational technology knowledge, instead each section:

Highlights, discusses, and compares the limitations and advantages of the different design options in terms of scalability, performance, flexibility, availability, complexity, security, and so on to simplify the job and help you understand what technology, protocol, or design options should be selected and why, based on the business or application requirements or to fix a broken design that need to be optimized
Covers design aspects of different protocols and technologies, and how they map with different requirements
Highlights drivers toward using these technologies whether it is intended for enterprise or service provider network, depending on the topic and technology

Using a business-driven approach, CCDE Study Guide helps you analyze business and technical requirements and develop network designs that are based on these business needs and goals, taking into account both the technical and non-technical design constraints. The various “scenario-based” design examples discussed in this book will help you craft design approaches and requirements analysis on such topics as converged enterprise network architectures, service provider network architectures, and data centers. The book also addresses high availability, IPv6, multicast, QoS, security, and network management design considerations, presenting you with an in-depth evaluation of a broad range of technologies and environments.

Whether you are preparing for the CCDE exam or simply wish to gain better insight into the art of network design in a variety of environments, this book helps you learn how to think like an expert network designer as well as analyze and compare
the different design options, principles, and protocols based on different design requirements.

Master a business-driven approach to designing enterprise, service provider, and data center networks
Analyze the design impact of business, functional, and application requirements
Learn from scenario-based examples, including converged enterprise networks, service provider networks, and cloud-based data centers
Overcome design limitations and fix broken designs
Review design options and considerations related to Layer 2 and Layer 3 control plane protocols
Build designs that accommodate new services and applications
Consider design options for modern campus networks, including network virtualization
Design WAN edge and Internet edge blocks in enterprise networks
Review the architectural elements of a service provider-grade network
Plan MPLS VPN network environments, including L2VPN and L3VPN
Interconnect different networks or routing domains
Design traditional, virtualized, and cloud-based data center networks
Interconnect dispersed data center networks to protect business continuity
Achieve appropriate levels of operational uptime and network resiliency
Integrate IPv6, multicast, QoS, security, and network management into your designs

Introduction xx

Part I Business-Driven Strategic Network Design 1

Chapter 1 Network Design Requirements: Analysis and Design Principles 3

Design Scope 4

Business Requirements 5

Business Continuity 6

Elasticity to Support the Strategic Business Trends 7

IT as a “Business Innovation” Enabler 8

The Nature of the Business 9

Business Priorities 9

Functional Requirements 9

Technical Requirements 10

Application Requirements 10

Design Constraints 12

Crafting the Design Requirements 13

Planning 16

Decision Tree 17

Decision Matrix 17

Planning Approaches 18

Strategic Balance 18

Network Design Principles 19

Reliability and Resiliency 19

Modularity 20

Reliable and Manageable Scalability 21

Fault Isolation and Simplicity 22

Hierarchy 23

Responsiveness 25

Holistic Design Approach 25

Physical Layout Considerations 26

No Gold Plating 29

Summary 29

Part II Next Generation - Converged Enterprise Network Architectures 31

Chapter 2 Enterprise Layer 2 and Layer 3 Design 35

Enterprise Layer 2 LAN Design Considerations 35

Spanning Tree Protocol 36

VLANs and Trunking 37

Link Aggregation 37

First Hop Redundancy Protocol and Spanning Tree 38

Enterprise Layer 2 LAN Common Design Options 40

Layer 2 Design Models: STP Based (Classical Model) 40

Layer 2 Design Model: Switch Clustering Based (Virtual Switch) 41

Layer 2 Design Model: Daisy-Chained Access Switches 42

Layer 2 LAN Design Recommendations 43

Enterprise Layer 3 Routing Design Considerations 43

IP Routing and Forwarding Concept Review 43

Link-State Routing Protocol Design Considerations 45

Link-State over Hub-and-Spoke Topology 45

Link-State over Full-Mesh Topology 48

OSPF Area Types 49

OSPF Versus IS-IS 53

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