Cisco CRS Series - CHAPTER 2 Implementing Multicast Routing on Cisco IOS XR Software

CONTENTS
Preface Preface ix
Changes to This Document ix
Obtaining Documentation and Submitting a Service Request ix
CHAPTER 1 New and Changed Multicast Features 1
New and Changed Multicast Features 1
CHAPTER 2 Implementing Multicast Routing on Cisco IOS XR Software 3
Prerequisites for Implementing Multicast Routing 4
Information About Implementing Multicast Routing 5
Key Protocols and Features Supported in the Cisco IOS XR Software Multicast Routing
Implementation 5
Multicast Routing Functional Overview 6
Multicast Routing Implementation 6
PIM-SM, PIM-SSM, and PIM-BIDIR 7
PIM-SM Operations 7
PIM-SSM Operations 8
PIM-Bidirectional Operations 8
Restrictions for PIM-SM and PIM-SSM, and PIM BIDIR 8
Internet Group Management Protocol and Multicast Listener Discovery 9
IGMP and MLD Versions 9
IGMP Routing Example 10
Protocol Independent Multicast 11
PIM-Sparse Mode 11
PIM-Source Specific Multicast 12
PIM-Bidirectional Mode 12
PIM Shared Tree and Source Tree (Shortest Path Tree) 13
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
iii