CCIE Practical Studies, Volume II

By Karl Solie and Leah Lynch

• Table of Contents
  • Copyright
  • About the Authors
  • Acknowledgments
  • Icons Used in This Book
  • Command Syntax Conventions
  • Foreword
  • Introduction
  • Part I. Ethernet Switching
  • Chapter 1. Configuring Advanced Switching on the Cisco Catalyst 3550 Ethernet Switch
  • Part II. Controlling Network Propagation and Network Access
  • Chapter 2. Configuring Route Maps and Policy-Based Routing
  • Part III. Multicast Routing
  • Chapter 3. Configuring Multicast Routing
    • Multicast Basics
    • IP Multicast Addressing
    • Multicast Distribution Trees
    • Protocol Independent Multicasting
    • Lab 5: Set Up Basic Multicasting
    • Multicast Frame Relay
    • Multicast TTL
    • Multicast Boundary
    • PIM Auto-RP
    • Lab 6: Set Up Frame Relay Multicast Routing
    • Multicast Joining
    • Lab 7: Multicast Joining
    • Controlling Multicast
    • Lab 8: Advanced Multicast Delivery
    • DVMRP Multicast Routing
    • PIM Version 2
    • Lab 9: PIM
    • Monitoring and Testing
    • CCIE Multicast Lab Scenario
    • Further Reading
  • Part IV. Performance Management and Quality of Service
  • Chapter 4. Router Performance Management
  • Chapter 5. Integrated and Differentiated Services
  • Chapter 6. QoS Rate Limiting and Queuing Traffic
  • Part V. BGP Theory and Configuration
  • Chapter 7. BGP-4 Theory
  • Chapter 8. Introduction to BGP-4 Configuration
  • Chapter 9. Advanced BGP Configuration
  • Part VI. CCIE Practice Labs
  • Chapter 10. CCIE Preparation and Practice Labs
  • Part VII. Appendixes
  • Appendix A. Cisco IOS Software Limitations and Restrictions
  • Appendix B. RFCs
  • Appendix C. Bibliography
  • Appendix D. IP Prefix Lists

Multicast Boundary

As a more stringent control, if multicast traffic is not desired to cross an imaginary line in a router, you can set up a multicast boundary. You can restrict this to certain multicast groups through a standard IP access list.

The ip multicast boundary (acl#) interface command enables you to create multicast boundaries. Multicast boundaries are bidirectional in nature. You can also add a parameter of filter-autorp to the command to filter multicast range announcements within the auto-RP messages. Auto-RP is discussed next.

Router(config-if)# ip multicast boundary 1
Router(config)# access-list 1 deny 239.0.0.0 0.255.255.255
Router(config)# access-list 1 permit 224.0.0.0 15.255.255.255

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