Cisco CRS Series User Manual

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

Cisco CRS Series Specifications

General

Category	Network Router
Operating System	Cisco IOS XR
Form Factor	Modular chassis
Routing Capacity	Up to 322 Tbps
Interface Support	10 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet
Maximum Throughput	Up to 322 Tbps
Line Card Slots	4, 8, 16
Dimensions	Varies by chassis
Weight	Varies by chassis
Model	Cisco CRS Series