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IP Routing on Cisco IOS, IOS XE, and IOS XR: An Essential Guide to Understanding and Implementing IP Routing Protocols


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  • Copyright 2015
  • Dimensions: 7-3/8" x 9-1/8"
  • Pages: 1152
  • Edition: 1st
  • Book
  • ISBN-10: 1-58714-423-9
  • ISBN-13: 978-1-58714-423-3

An Essential Guide to Understanding and Implementing IP Routing Protocols

Cisco’s authoritative single-source guide to IP routing protocols for enterprise and service provider environments

Service providers and large enterprises are converging on a common IP infrastructure that supports rapid deployment of high-value services. Demand is soaring for highly skilled IP network engineers who can implement and run these infrastructures. Now, one source combines reliable knowledge about contemporary IP routing protocols and expert hands-on guidance for using them with Cisco IOS, IOS XE, and IOS XR operating systems.

After concisely reviewing the basics, three Cisco experts fully explain static routing, EIGRP, OSPF, IS-IS, and BGP routing protocols. Next, they introduce advanced routing with policies and redistribution, sophisticated BGP-based traffic engineering, and multicast. They present comprehensive coverage of IPv6, from its multicast implementation to its completely revamped address structure. Finally, they discuss advanced high availability techniques, including fast routing convergence.

IP Routing on Cisco IOS, IOS XE, and IOS XR presents each protocol conceptually, with intuitive illustrations, realistic configurations, and appropriate output. To help IOS users master IOS XE and IOS XR, differences in operating systems are explicitly
identified, and side-by-side feature command references are presented.

All content fully aligns with Learning@Cisco, providing efficient self-study for multiple Cisco Career Certifications, including CCNA®/CCNP®/CCIE® Service Provider, CCIE Routing & Switching, Cisco IOS XR Specialist Certification, and the routing components of several additional Cisco Certifications.

Brad Edgeworth, CCIE No. 31574 (R&S & SP) has been with Cisco since 2011 as Systems Engineer and Technical Leader. Formerly a network architect and consultant for various Fortune® 500 companies, his 18 years of IT experience includes extensive architectural and operational work in enterprise and service provider environments. He is a Cisco Live distinguished speaker presenting on IOS XR.

Aaron Foss, CCIE No. 18761 (R&S & SP), a High Touch Engineer with the Cisco Focused Technical Support (FTS) organization, works with large service providers to troubleshoot MPLS, QoS, and IP routing issues. He has more than 15 years of experience designing, deploying, and troubleshooting IP networks. 

Ramiro Garza Rios, CCIE No. 15469 (R&S, SP, and Security), Senior Network Consulting Engineer with Cisco Advanced Services, plans, designs, implements, and optimizes next-generation service provider networks. Before joining Cisco in 2005, he was Network Consulting and Presales Engineer for a Cisco Gold Partner in Mexico, where he planned and deployed both enterprise and service provider networks.

Foreword by Norm Dunn, Senior Product Manager, Learning@Cisco Global Product Management, Service Provider Portfolio

  • Understand how IOS®, IOS XE, and IOS XR operating systems compare
  • Master IPv4 concepts, addressing structure, and subnetting
  • Learn how routers and routing protocols work, and how connected networks and static routes behave from the router’s perspective
  • Work with EIGRP and distance vector routing
  • Deploy basic and advanced OSPF, including powerful techniques for organizing routing domains, path selection, and optimization
  • Compare IS-IS with OSPF, and implement advanced IS-IS multilevel routing, optimization, and path selection
  • Make the most of BGP and route manipulation, including IOS/IOS XE route maps and IOS XR’s highly scalable Route Policy Language
  • Use advanced policy-based route manipulation and filtering
  • Implement route redistribution: rules, potential problems, and solutions
  • Leverage BGP communities, summaries, and other router conservation techniques
  • Discover how IPv6 changes IP address and command structure
  • Establish highly efficient multicast routing in IPv4 and IPv6 environments
  • Systematically improve network availability and operational uptime through event driven detection and fast routing convergence


Please download the files associated with IP Routing on Cisco IOS, IOS XE, and IOS XR, which includes Appendixes A & B and Chapter 21, here.

Online Sample Chapter

IP Routing on Cisco IOS, IOS XE, and IOS XR: How a Router Works

Sample Pages

Download the sample pages (includes Chapter 3 and Index)

Table of Contents




Part I Network Fundamentals

Chapter 1 Introduction to the Operating Systems 1

IOS, IOS XE, and IOS XR Software Architecture 1

    IOS 1

        Kernel and OS Scheduling 2

        Memory Management 2

        Software Packaging 2

    IOS XE 4

        Kernel and OS Scheduling 4

        Memory Management 4

    IOS XR 5

        Kernel and OS Scheduling 5

        Memory Management 5

    Software Packaging 6

    Debugging 8

CLI and Configuration 8

    IOS 9

        User Mode 9

        Privileged Mode 10

        Global Configuration Mode 10

        Configuration Archiving 11

        Configuration Replace 13

    IOS XR 14

        Viewing Changes in the SysDB 17

        Commit Label 18

        Commit Replace 19

        Failed Commits 20

        Configuration Rollback 21

        Commit Confirmed 22

        Multiple Commit Options 23

        Loading Files for Changes 24

        Hierarchical Configuration 24

        PWD 26

        Root 26

Summary 27

References in This Chapter 27

Chapter 2 IPv4 Addressing 29

IP Fundamentals 29

Understanding Binary 31

Address Classes 34

Subnet Masks and Subnetting 35

    Subnet Mask Purpose 36

    Calculating Usable IP Addresses 37

    Network Prefix Notation 38


We've made every effort to ensure the accuracy of this book and its companion content. Any errors that have been confirmed since this book was published can be downloaded below.

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