OSPF and IS-IS: Choosing an IGP for Large-Scale Networks

book cover
OSPF and IS-IS: Choosing an IGP for Large-Scale Networks
By Jeff Doyle
Publisher: Addison Wesley Professional
Pub Date: November 01, 2005
ISBN: 0-321-16879-8
Pages: 480

Table of Contents  | Index

The practical guide to large-scale networking with OSPF and IS-IS

This is the definitive guide to using OSPF and IS-IS protocols in large-scale IP enterprise, carrier, and service provider networks. Well-known network designer Jeff Doyle draws on his consulting experience, offering realistic advice and straight answers on every aspect of working with link-state protocolsfrom scalability, reliability, and security to area design and database synchronization.

This book is organized to help network engineers and architects compare OSPF and IS-IS. One feature at a time, Doyle first demonstrates how a topic or feature is implemented in OSPF, and then walks through a similar implementation using IS-IS. Professionals who are relatively new to large-scale networking will welcome his practical introduction to the concepts, goals, and history of link state protocols. Coverage includes

  • Understanding message types, encapsulation, architecture, LSAs, and LSPs

  • Optimizing addressing, neighbor discovery, adjacencies, and router designation

  • Improving scalability: controlling the scope of flooding, link state database size, SPF calculation efficiency, and much more

  • Designing and operating large-scale networks for maximum security and reliability

  • Hardening networks to thwart attacks against routing protocols

  • Comparing OSPF and IS-IS extensibility

  • Utilizing extensions for MPLS-based traffic engineering, IPv6, and multi-topology routing

  • Troubleshooting OSPF and IS-IS log entries, debug output, and LS databases

Doyle's thorough explanations, end-of-chapter review questions, and many wide-ranging examples for both Cisco's IOS and Juniper's JUNOS also make this book an exceptional resource for anyone pursuing a CCIE or JNCIE certification.

© Copyright Pearson Education. All rights reserved.

book cover
OSPF and IS-IS: Choosing an IGP for Large-Scale Networks
By Jeff Doyle
Publisher: Addison Wesley Professional
Pub Date: November 01, 2005
ISBN: 0-321-16879-8
Pages: 480

Table of Contents  | Index

   About the Author
      What Is a Large-Scale Data Communications Network?
      A Word on IOS and JUNOS
        Chapter 1.  The Roots of Link State Protocols
      Section 1.1.  An Intergalactic Network
      Section 1.2.  ARPANET
      Section 1.3.  The Network Working Group
      Section 1.4.  The Birth of the Internet
      Section 1.5.  Routing in the ARPANET
      Section 1.6.  The European Invasion
      Section 1.7.  Separate But Equal
      Section 1.8.  Conclusion
        Chapter 2.  Link State Basics
      Section 2.1.  Vector Protocol Basics
      Section 2.2.  Fundamental Link State Concepts
      Review Questions
        Chapter 3.  Message Types
      Section 3.1.  Comparative Terminology
      Section 3.2.  Message Encapsulation
      Section 3.3.  Message Architecture
      Section 3.4.  Message Types
        Chapter 4.  Addressing, Neighbor Discovery, and Adjacencies
      Section 4.1.  Router and Area IDs
      Section 4.2.  The Hello Protocol
      Section 4.3.  Adjacencies
      Section 4.4.  Designated Routers
      Section 4.5.  Media Types
      Section 4.6.  Interface Databases
      Review Questions
        Chapter 5.  Flooding
      Section 5.1.  Flooding Components
      Section 5.2.  Areas and Router Types
      Section 5.3.  Metric Types
      Section 5.4.  Essential LSAs
      Section 5.5.  Essential TLVs
      Review Questions
        Chapter 6.  Link State Database Synchronization
      Section 6.1.  OSPF Database Synchronization
      Section 6.2.  IS-IS Database Synchronization
      Review Questions
        Chapter 7.  Area Design
      Section 7.1.  Area Scalability
      Section 7.2.  Area Reliability
      Section 7.3.  OSPF Areas
      Section 7.4.  IS-IS Areas
      Section 7.5.  BGP and Area Design
      Review Questions
        Chapter 8.  Scaling
      Section 8.1.  SPF Enhancements
      Section 8.2.  Flooding Enhancements
      Section 8.3.  Fragmentation
      Section 8.4.  Overloading
      Review Questions
        Chapter 9.  Security and Reliability
      Section 9.1.  Routing Protocol Vulnerabilities
      Section 9.2.  Security and Reliability Features
      Section 9.3.  Designing for Security and Reliability
      Section 9.4.  Operating for Security and Reliability
      Review Questions
        Chapter 10.  Extensibility
      Section 10.1.  Extending OSPF
      Section 10.2.  Extending IS-IS
      Section 10.3.  Route Tagging
      Review Questions
        Chapter 11.  Extensions for MPLS Traffic Engineering
      Section 11.1.  MPLS: An Overview
      Section 11.2.  Traffic Engineering: An Overview
      Section 11.3.  OSPF Extensions for Traffic Engineering
      Section 11.4.  IS-IS Extensions for Traffic Engineering
      Review Questions
        Chapter 12.  Extensions for IPv6
      Section 12.1.  IPv6: An Overview
      Section 12.2.  OSPFv3
      Section 12.3.  IS-IS Extensions for IPv6
      Review Questions
        Chapter 13.  Extensions for Multi-Topology Routing
      Section 13.1.  OSPF Extensions for Multi-Topology Routing
      Section 13.2.  IS-IS Extensions for Multi-Topology Routing
      Review Questions
       Afterword: The Future of Link State Protocols