H3c S5500-ei series User manual

H3C S5500-EI & S5500-SI Switch Series

IP Multicast Configuration Guide

Hangzhou H3C Technologies Co., Ltd.

http://www.h3c.com

Software version: Release 2220

Document version: 6W100-20130527

No part of this manual may be reproduced or transmitted in any form or by any means without prior

written consent of Hangzhou H3C Technologies Co., Ltd.

Trademarks

H3C, , H3CS, H3CIE, H3CNE, Aolynk, , H3Care, , IRF, NetPilot, Netflow,

SecEngine, SecPath, SecCenter, SecBlade, Comware, ITCMM and HUASAN are trademarks of

Hangzhou H3C Technologies Co., Ltd.

All other trademarks that may be mentioned in this manual are the property of their respective owners

Notice

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Preface

The H3C S5500-EI & S5500-SI documentation set includes 10 configuration guides, which describe the

software features for the H3C S5500-EI & S5500-SI Switch Series Release 2220, and guide you through

the software configuration procedures. These configuration guides also provide configuration examples

to help you apply software features to different network scenarios.

The IP Multicast Configuration Guide describes IP multicast fundamentals and configuration. It covers the

IPv4 multicast configuration and IPv6 multicast configuration. With multicast, you can implement efficient

point-to-multipoint data transmission in your network.

This preface includes:

•Audience

•Added and modified features

•Conventions

•About the S5500-EI & S5500-SI documentation set

•Obtaining documentation

•Technical support

•Documentation feedback

Audience

This documentation is intended for:

•Network planners

•Field technical support and servicing engineers

•Network administrators working with the S5500-EI & S5500-SI series

Added and modified features

Compared to Release 2210, Release 2220 adds and modifies the following features:

Confi

g

uration

g

uide Added and modified features

Multicast overview N/A

IGMP snooping Added features: setting the DSCP value for IGMP messages.

PIM snooping N/A

Multicast VLAN N/A

Multicast routing and forwarding

(available only on the S5500-EI) N/A

Confi

g

uration

g

uide Added and modified features

IGMP (available only on the

S5500-EI) Added features: setting the DSCP value for IGMP messages.

PIM (available only on the

S5500-EI) Added feature: setting the DSCP value for PIM messages.

MSDP (available only on the

S5500-EI) N/A

MBGP (available only on the

S5500-EI) N/A

MLD snooping Added features: setting the DSCP value for MLD messages.

IPv6 PIM snooping N/A

IPv6 multicast VLAN N/A

IPv6 multicast routing and

forwarding (available only on the

S5500-EI)

N/A

MLD (available only on the

S5500-EI) Added features: setting the DSCP value for MLD messages.

IPv6 PIM (available only on the

S5500-EI) Added features: setting the DSCP value for IPv6 PIM messages.

IPv6 MBGP (available only on the

S5500-EI) N/A

Conventions

This section describes the conventions used in this documentation set.

Command conventions

Convention Descri

p

tion

Boldface Bold text represents commands and keywords that you enter literally as shown.

Italic Italic text represents arguments that you replace with actual values.

[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.

{ x | y | ... }

Braces enclose a set of required syntax choices separated by vertical bars, from which

you select one.

[ x | y | ... ]

Square brackets enclose a set of optional syntax choices separated by vertical bars, from

which you select one or none.

{ x | y | ... } *

Asterisk marked braces enclose a set of required syntax choices separated by vertical

bars, from which you select at least one.

[ x | y | ... ] *

Asterisk marked square brackets enclose optional syntax choices separated by vertical

bars, from which you select one choice, multiple choices, or none.

&<1-n> The argument or keyword and argument combination before the ampersand (&) sign can

be entered 1 to n times.

# A line that starts with a pound (#) sign is comments.

GUI conventions

Convention Descri

p

tion

Boldface Window names, button names, field names, and menu items are in Boldface. For

example, the New User window appears; click OK.

> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.

Convention Descri

p

tion

< > Button names are inside angle brackets. For example, click <OK>.

[ ] Window names, menu items, data table and field names are inside square brackets. For

example, pop up the [New User] window.

/ Multi-level menus are separated by forward slashes. For example, [File/Create/Folder].

Symbols

Convention Descri

p

tion

WARNING An alert that calls attention to important information that if not understood or followed can

result in personal injury.

CAUTION An alert that calls attention to important information that if not understood or followed can

result in data loss, data corruption, or damage to hardware or software.

IMPORTANT An alert that calls attention to essential information.

NOTE An alert that contains additional or supplementary information.

TIP An alert that provides helpful information.

Network topology icons

Represents a generic network device, such as a router, switch, or firewall.

Represents a routing-capable device, such as a router or Layer 3 switch.

Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports

Layer 2 forwarding and other Layer 2 features.

Port numbering in examples

The port numbers in this document are for illustration only and might be unavailable on your device.

About the S5500-EI & S5500-SI documentation set

The H3C S5500-EI & S5500-SI documentation set includes:

Cate

g

or

y

Documents

Pur

p

oses

Product description and

specifications

Marketing brochure Describe product specifications and benefits.

Technology white papers

Provide an in-depth description of software features

and technologies.

Hardware specifications

and installation

Compliance and safety

manual

CE DOCs

Provide regulatory information and the safety

instructions that must be followed during installation.

Quick start Guides you through initial installation and setup

procedures to help you quickly set up your device.

Installation guide Provides a complete guide to switch installation and

specifications.

PSR150-A [ PSR150-D ]

Power Modules User

Manual

Describe the specifications, installation, and

replacement of hot swappable 150W power

modules.

RPS Ordering Information

for H3C Low-End Ethernet

Switches

Helps you order RPSs for switches that can work with

an RPS.

User manuals for RPSs Describe the specifications, installation, and

replacement of RPSs.

User manuals for interface

cards

Describe the specifications, installation, and

replacement of expansion interface cards.

H3C Low End Series

Ethernet Switches

Pluggable Modules

Manual

Describes the specifications of pluggable transceiver

modules.

Pluggable SFP[SFP+][XFP]

Transceiver Modules

Installation Guide

Describe the installation, and replacement of

SFP/SFP+/XFP transceiver modules.

Software configuration

Configuration guides Describe software features and configuration

procedures.

Command references Provide a quick reference to all available

commands.

Operations and

maintenance Release notes

Provide information about the product release,

including the version history, hardware and software

compatibility matrix, version upgrade information,

technical support information, and software

upgrading.

Obtaining documentation

You can access the most up-to-date H3C product documentation on the World Wide Web

at http://www.h3c.com.

Click the links on the top navigation bar to obtain different categories of product documentation:

[Technical Support & Documents > Technical Documents] – Provides hardware installation, software

upgrading, and software feature configuration and maintenance documentation.

[Products & Solutions] – Provides information about products and technologies, as well as solutions.

[Technical Support & Documents > Software Download] – Provides the documentation released with the

software version.

Technical support

servi[email protected]

http://www.h3c.com

Documentation feedback

You can e-mail your comments about product documentation to info@h3c.com.

We appreciate your comments.

i

Contents

Multicast overview ······················································································································································· 1

Introduction to multicast····················································································································································1

Information transmission techniques·······················································································································1

Multicast features······················································································································································4

Common notations in multicast ·······························································································································5

Multicast advantages and applications ·················································································································5

Multicast models································································································································································6

Multicast architecture························································································································································7

Multicast addresses ··················································································································································7

Multicast protocols ················································································································································ 11

Multicast packet forwarding mechanism····················································································································· 13

Multicast support for VPNs············································································································································ 13

Introduction to VPN instances ······························································································································ 14

Multicast application in VPNs······························································································································ 14

Configuring IGMP snooping ·····································································································································16

Overview········································································································································································· 16

Basic concepts in IGMP snooping······················································································································· 16

How IGMP snooping works ································································································································· 18

IGMP snooping proxying ····································································································································· 20

Protocols and standards ······································································································································· 21

IGMP snooping configuration task list························································································································· 21

Configuring basic IGMP snooping functions ·············································································································· 22

Enabling IGMP snooping ····································································································································· 23

Specifying the version of IGMP snooping ·········································································································· 23

Configuring static multicast MAC address entries····························································································· 24

Configuring IGMP snooping port functions················································································································· 24

Setting aging timers for dynamic ports ··············································································································· 25

Configuring static ports········································································································································· 25

Configuring a port as a simulated member host ······························································································· 26

Enabling IGMP snooping fast-leave processing································································································· 27

Disabling a port from becoming a dynamic router port ··················································································· 28

Configuring IGMP snooping querier ··························································································································· 29

Enabling IGMP snooping querier ························································································································ 29

Configuring parameters for IGMP queries and responses ··············································································· 29

Configuring the source IP addresses for IGMP queries····················································································· 30

Configuring IGMP snooping proxying ························································································································ 31

Enabling IGMP snooping proxying····················································································································· 31

Configuring a source IP address for the IGMP messages sent by the proxy·················································· 31

ii

Configuring an IGMP snooping policy························································································································ 32

Configuring a multicast group filter····················································································································· 32

Configuring multicast source port filtering·········································································································· 33

Enabling dropping unknown multicast data······································································································· 34

Configuring IGMP report suppression ················································································································ 34

Setting the maximum number of multicast groups that a port can join ··························································· 35

Enabling multicast group replacement················································································································ 36

Setting the 802.1p precedence for IGMP messages ························································································ 37

Configuring a multicast user control policy ········································································································ 37

Enabling the IGMP snooping host tracking function ························································································· 38

Setting the DSCP value for IGMP messages······································································································· 39

Displaying and maintaining IGMP snooping·············································································································· 39

IGMP snooping configuration examples ····················································································································· 40

Group policy and simulated joining configuration example············································································ 40

Static port configuration example ······················································································································· 42

IGMP snooping querier configuration example································································································· 46

IGMP snooping proxying configuration example······························································································ 48

Multicast source and user control policy configuration example····································································· 50

Troubleshooting IGMP snooping ·································································································································· 55

Layer 2 multicast forwarding cannot function ···································································································· 55

Configured multicast group policy fails to take effect ······················································································· 56

Appendix ········································································································································································ 56

Processing of multicast protocol messages ········································································································· 56

Configuring PIM snooping ········································································································································58

Overview········································································································································································· 58

Configuring PIM snooping ············································································································································ 59

Displaying and maintaining PIM snooping················································································································· 60

PIM snooping configuration example·························································································································· 60

Troubleshooting PIM snooping ····································································································································· 63

PIM snooping does not work ······························································································································· 63

Some downstream PIM-capable routers cannot receive multicast data ·························································· 63

Configuring multicast VLANs·····································································································································65

Overview········································································································································································· 65

Multicast VLAN configuration task list ························································································································· 67

Configuring a sub-VLAN-based multicast VLAN········································································································· 67

Configuration guidelines ······································································································································ 67

Configuration procedure ······································································································································ 67

Configuring a port-based multicast VLAN··················································································································· 68

Configuration prerequisites ·································································································································· 68

Configuring user port attributes ··························································································································· 68

Configuring multicast VLAN ports ······················································································································· 69

Displaying and maintaining multicast VLAN··············································································································· 70

Multicast VLAN configuration examples······················································································································ 70

iii

Sub-VLAN-based multicast VLAN configuration example ················································································· 70

Port-based multicast VLAN configuration example···························································································· 74

Configuring multicast routing and forwarding (available only on the S5500-EI) ·················································78

Overview········································································································································································· 78

RPF check mechanism ··········································································································································· 78

Static multicast routes············································································································································ 81

Multicast forwarding across unicast subnets ······································································································ 83

Multicast traceroute··············································································································································· 84

Configuration task list ···················································································································································· 85

Enabling IP multicast routing········································································································································· 85

Configuring multicast routing and forwarding············································································································ 86

Configuring static multicast routes······················································································································· 86

Configuring a multicast routing policy················································································································ 87

Configuring a multicast forwarding range ········································································································· 87

Configuring the multicast forwarding table size ································································································ 88

Tracing a multicast path ······································································································································· 89

Displaying and maintaining multicast routing and forwarding················································································· 89

Configuration examples ················································································································································ 91

Changing an RPF route········································································································································· 91

Creating an RPF route··········································································································································· 93

Multicast forwarding over a tunnel······················································································································ 95

Troubleshooting multicast routing and forwarding····································································································· 99

Static multicast route failure ································································································································· 99

Multicast data fails to reach receivers···············································································································100

Configuring IGMP (available only on the S5500-EI) ··························································································· 101

Overview·······································································································································································101

IGMP versions······················································································································································101

Introduction to IGMPv1·······································································································································101

Enhancements in IGMPv2···································································································································103

Enhancements in IGMPv3···································································································································104

IGMP SSM mapping···········································································································································105

IGMP proxying ····················································································································································106

IGMP support for VPNs ······································································································································108

Protocols and standards ·····································································································································108

IGMP configuration task list ········································································································································108

Configuring basic IGMP functions ·····························································································································109

Enabling IGMP ····················································································································································109

Configuring IGMP versions ································································································································110

Configuring static joining ···································································································································110

Configuring a multicast group filter···················································································································111

Setting the maximum number of multicast groups that an interface can join ···············································111

Adjusting IGMP performance ·····································································································································112

Configuration prerequisites ································································································································112

iv

Configuring Router-Alert option handling methods··························································································112

Configuring IGMP query and response parameters························································································113

Configuring IGMP fast-leave processing ··········································································································116

Enabling the IGMP host tracking function ········································································································117

Setting the DSCP value for IGMP messages·····································································································117

Configuring IGMP SSM mapping ······························································································································118

Enabling SSM mapping······································································································································118

Configuring SSM mappings·······························································································································118

Configuring IGMP proxying ·······································································································································119

Enabling IGMP proxying····································································································································119

Configuring multicast forwarding on a downstream interface·······································································120

Displaying and maintaining IGMP·····························································································································120

IGMP configuration examples ····································································································································122

Basic IGMP functions configuration example···································································································122

SSM mapping configuration example ··············································································································124

IGMP proxying configuration example·············································································································127

Troubleshooting IGMP·················································································································································129

No membership information on the receiver-side router·················································································129

Inconsistent memberships on routers on the same subnet···············································································130

Configuring PIM (available only on the S5500-EI)······························································································· 131

PIM overview ································································································································································131

PIM-DM overview ················································································································································131

PIM-SM overview·················································································································································134

BIDIR-PIM overview··············································································································································140

Administrative scoping overview·······················································································································144

PIM-SSM overview···············································································································································146

Relationships among PIM protocols ··················································································································148

PIM support for VPNs··········································································································································148

Protocols and standards ·····································································································································148

Configuring PIM-DM ····················································································································································149

PIM-DM configuration task list····························································································································149

Configuration prerequisites ································································································································149

Enabling PIM-DM·················································································································································149

Enabling state-refresh capability························································································································150

Configuring state-refresh parameters ················································································································151

Configuring PIM-DM graft retry period·············································································································151

Configuring PIM-SM·····················································································································································152

PIM-SM configuration task list····························································································································152

Configuration prerequisites ································································································································152

Enabling PIM-SM ·················································································································································153

Configuring an RP ···············································································································································154

Configuring a BSR···············································································································································156

Configuring administrative scoping ··················································································································160

v

Configuring multicast source registration··········································································································162

Disabling the switchover to SPT·························································································································163

Configuring BIDIR-PIM ·················································································································································164

BIDIR-PIM configuration task list·························································································································164

Configuration prerequisites ································································································································164

Enabling PIM-SM ·················································································································································165

Enabling BIDIR-PIM··············································································································································166

Configuring an RP ···············································································································································166

Configuring a BSR···············································································································································168

Configuring administrative scoping ··················································································································172

Configuring PIM-SSM ··················································································································································174

PIM-SSM configuration task list··························································································································174

Configuration prerequisites ································································································································175

Enabling PIM-SM ·················································································································································175

Configuring the SSM group range····················································································································176

Configuring PIM common features·····························································································································176

PIM common feature configuration task list······································································································176

Configuration prerequisites ································································································································177

Configuring a multicast data filter ·····················································································································177

Configuring a hello message filter ····················································································································178

Configuring PIM hello options ···························································································································178

Configuring the prune delay ······························································································································180

Configuring PIM common timers ·······················································································································181

Configuring join/prune message sizes·············································································································182

Configuring PIM to work with BFD ····················································································································182

Setting the DSCP value for PIM messages ········································································································183

Displaying and maintaining PIM································································································································183

PIM configuration examples ·······································································································································185

PIM-DM configuration example ·························································································································185

PIM-SM non-scoped zone configuration example ···························································································188

PIM-SM admin-scope zone configuration example ·························································································194

BIDIR-PIM configuration example·······················································································································200

PIM-SSM configuration example························································································································205

Troubleshooting PIM ····················································································································································208

A multicast distribution tree cannot be built correctly······················································································208

Multicast data abnormally terminated on an intermediate router··································································209

RPs cannot join SPT in PIM-SM ··························································································································209

RPT establishment failure or source registration failure in PIM-SM ································································210

Configuring MSDP (available only on the S5500-EI)··························································································· 211

Overview·······································································································································································211

How MSDP works ···············································································································································212

MSDP support for VPNs······································································································································217

Protocols and standards ·····································································································································217

vi

MSDP configuration task list ·······································································································································217

Configuring basic MSDP functions·····························································································································218

Configuration prerequisites ································································································································218

Enabling MSDP····················································································································································218

Creating an MSDP peer connection··················································································································219

Configuring a static RPF peer ····························································································································219

Configuring an MSDP peer connection·····················································································································220

Configuring MSDP peer description··················································································································220

Configuring an MSDP mesh group ···················································································································220

Configuring MSDP peer connection control·····································································································221

Configuring SA messages related parameters ·········································································································222

Configuring SA message content ······················································································································222

Configuring SA request messages·····················································································································223

Configuring SA message filtering rules·············································································································224

Configuring the SA cache mechanism··············································································································224

Displaying and maintaining MSDP ····························································································································225

MSDP configuration examples····································································································································226

PIM-SM Inter-domain multicast configuration ···································································································226

Inter-AS multicast configuration by leveraging static RPF peers ·····································································231

Anycast RP configuration····································································································································235

SA message filtering configuration····················································································································239

Troubleshooting MSDP ················································································································································243

MSDP peers stay in down state ·························································································································243

No SA entries in the switch's SA cache············································································································243

Inter-RP communication faults in Anycast RP application ················································································244

Configuring MBGP (available only on the S5500-EI) ·························································································· 245

MBGP overview····························································································································································245

Protocols and standards ··············································································································································245

MBGP configuration task list·······································································································································245

Configuring basic MBGP functions ····························································································································246

Controlling route advertisement and reception·········································································································247

Configuring MBGP route redistribution·············································································································247

Configuring default route redistribution into MBGP ························································································247

Configuring MBGP route summarization··········································································································248

Advertising a default route to an IPv4 MBGP peer or peer group ································································249

Configuring outbound MBGP route filtering·····································································································249

Configuring inbound MBGP route filtering·······································································································250

Configuring MBGP route dampening ···············································································································251

Configuring MBGP route attributes ····························································································································252

Configuring MBGP route preferences ···············································································································252

Configuring the default local preference ··········································································································252

Configuring the MED attribute ···························································································································253

Configuring the NEXT_HOP attribute················································································································253

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Configuring the AS_PATH attributes ·················································································································254

Tuning and optimizing MBGP networks ····················································································································254

Configuring MBGP soft reset······························································································································254

Enabling the MBGP ORF capability ··················································································································256

Configuring the maximum number of MBGP routes for load balancing·······················································257

Configuring a large scale MBGP network ················································································································257

Configuring IPv4 MBGP peer groups················································································································257

Configuring MBGP community ··························································································································258

Configuring an MBGP route reflector ···············································································································259

Displaying and maintaining MBGP ···························································································································260

Displaying MBGP················································································································································260

Resetting MBGP connections······························································································································261

Clearing MBGP information·······························································································································261

MBGP configuration example·····································································································································261

Configuring MLD snooping ···································································································································· 266

Overview·······································································································································································266

Basic concepts in MLD snooping·······················································································································266

How MLD snooping works ·································································································································268

MLD snooping proxying ·····································································································································269

Protocols and standards ·····································································································································271

MLD snooping configuration task list ·························································································································271

Configuring basic MLD snooping functions ··············································································································272

Enabling MLD snooping ·····································································································································272

Specifying the version of MLD snooping ··········································································································273

Configuring IPv6 static multicast MAC address entries···················································································273

Configuring MLD snooping port functions·················································································································274

Configuring aging timers for dynamic ports ····································································································274

Configuring static ports·······································································································································275

Configuring a port as a simulated member host ·····························································································276

Enabling fast-leave processing···························································································································277

Disabling a port from becoming a dynamic router port ·················································································278

Configuring MLD snooping querier ···························································································································278

Enabling MLD snooping querier ························································································································279

Configuring parameters for MLD queries and responses ···············································································279

Configuring the source IPv6 addresses for MLD queries ················································································280

Configuring MLD snooping proxying ························································································································281

Enabling MLD snooping proxying·····················································································································281

Configuring the source IPv6 addresses for the MLD messages sent by the proxy ·······································281

Configuring an MLD snooping policy························································································································282

Configuring an IPv6 multicast group filter ········································································································282

Configuring IPv6 multicast source port filtering ·······························································································283

Enabling dropping unknown IPv6 multicast data ····························································································284

Configuring MLD report suppression ················································································································284

viii

Setting the maximum number of multicast groups that a port can join ·························································285

Enabling IPv6 multicast group replacement ·····································································································285

Setting the 802.1p precedence for MLD messages ························································································286

Configuring an IPv6 multicast user control policy····························································································287

Enabling the MLD snooping host tracking function ·························································································288

Setting the DSCP value for MLD messages·······································································································288

Displaying and maintaining MLD snooping··············································································································289

MLD snooping configuration examples ·····················································································································290

IPv6 group policy and simulated joining configuration example ··································································290

Static port configuration example ·····················································································································292

MLD snooping querier configuration example·································································································296

MLD snooping proxying configuration example······························································································298

IPv6 multicast source and user control policy configuration example···························································300

Troubleshooting MLD snooping ··································································································································305

Layer 2 multicast forwarding cannot function ··································································································305

Configured IPv6 multicast group policy fails to take effect·············································································306

Appendix ······································································································································································306

Processing of IPv6 multicast protocol messages·······························································································306

Configuring IPv6 PIM snooping ····························································································································· 308

Overview·······································································································································································308

Configuring IPv6 PIM snooping··································································································································309

Displaying and maintaining IPv6 PIM snooping ······································································································310

IPv6 PIM snooping configuration example················································································································310

Troubleshooting IPv6 PIM snooping···························································································································313

IPv6 PIM snooping does not work·····················································································································313

Some downstream IPv6 PIM-capable routers cannot receive multicast data ················································313

Configuring IPv6 multicast VLANs ························································································································· 315

Overview·······································································································································································315

IPv6 multicast VLAN configuration task list ···············································································································317

Configuring a sub-VLAN-based IPv6 multicast VLAN ······························································································317

Configuration guidelines ····································································································································317

Configuration procedure ····································································································································318

Configuring a port-based IPv6 multicast VLAN ········································································································318

Configuration prerequisites ································································································································318

Configuring user port attributes ·························································································································318

Configuring IPv6 multicast VLAN ports ·············································································································319

Displaying and maintaining IPv6 multicast VLAN ····································································································320

IPv6 multicast VLAN configuration examples············································································································320

Sub-VLAN-based multicast VLAN configuration example ···············································································320

Port-based multicast VLAN configuration example··························································································325

Configuring IPv6 multicast routing and forwarding (available only on the S5500-EI)······································ 328

Overview·······································································································································································328

ix

RPF check mechanism ·········································································································································328

RPF check implementation in IPv6 multicast ·····································································································329

Configuration task list ··················································································································································331

Enabling IPv6 multicast routing···································································································································331

Configuring IPv6 multicast routing and forwarding ·································································································331

Configuring an IPv6 multicast routing policy ···································································································331

Configuring an IPv6 multicast forwarding range·····························································································332

Configuring the IPv6 multicast forwarding table size······················································································332

Displaying and maintaining IPv6 multicast routing and forwarding ······································································333

Troubleshooting IPv6 multicast policy configuration ································································································335

Abnormal termination of IPv6 multicast data ···································································································335

Configuring MLD (available only on the S5500-EI) ····························································································· 336

Overview·······································································································································································336

MLD versions························································································································································336

How MLDv1 works··············································································································································336

How MLDv2 works··············································································································································338

MLD messages ·····················································································································································340

MLD SSM mapping ·············································································································································342

MLD proxying ······················································································································································343

Protocols and standards ·····································································································································344

MLD configuration task list ··········································································································································344

Configuring basic MLD functions ·······························································································································345

Enabling MLD ······················································································································································345

Configuring the MLD version ·····························································································································346

Configuring static joining ···································································································································346

Configuring an IPv6 multicast group filter ········································································································347

Setting the maximum number of IPv6 multicast groups that an interface can join·······································347

Adjusting MLD performance ·······································································································································348

Configuration prerequisites ································································································································348

Configuring Router-Alert option handling methods··························································································348

Configuring MLD query and response parameters··························································································349

Configuring MLD fast-leave processing ············································································································351

Enabling the MLD host tracking function ··········································································································352

Setting the DSCP value for MLD messages·······································································································353

Configuring MLD SSM mapping ································································································································353

Configuration prerequisites ································································································································353

Enabling MLD SSM mapping·····························································································································354

Configuring MLD SSM mappings······················································································································354

Configuring MLD proxying ·········································································································································354

Enabling MLD proxying······································································································································355

Configuring IPv6 multicast forwarding on a downstream interface ······························································355

Displaying and maintaining MLD·······························································································································356

MLD configuration examples ······································································································································358

x

Basic MLD functions configuration example·····································································································358

MLD SSM mapping configuration example ·····································································································360

MLD proxying configuration example···············································································································363

Troubleshooting MLD ···················································································································································364

No member information on the receiver-side router························································································364

Inconsistent memberships on routers on the same subnet···············································································365

Configuring IPv6 PIM (available only on the S5500-EI) ······················································································ 366

Overview·······································································································································································366

IPv6 PIM-DM overview········································································································································366

IPv6 PIM-SM overview ········································································································································369

IPv6 BIDIR-PIM overview ·····································································································································376

IPv6 administrative scoping overview ···············································································································380

IPv6 PIM-SSM overview ······································································································································383

Relationship among IPv6 PIM protocols············································································································384

Protocols and standards ·····································································································································385

Configuring IPv6 PIM-DM············································································································································385

IPv6 PIM-DM configuration task list ···················································································································385

Configuration prerequisites ································································································································386

Enabling IPv6 PIM-DM ········································································································································386

Enabling state-refresh capability························································································································386

Configuring state refresh parameters················································································································387

Configuring IPv6 PIM-DM graft retry period ····································································································388

Configuring IPv6 PIM-SM ············································································································································388

IPv6 PIM-SM configuration task list····················································································································388

Configuration prerequisites ································································································································389

Enabling IPv6 PIM-SM·········································································································································389

Configuring an RP ···············································································································································390

Configuring a BSR···············································································································································392

Configuring IPv6 administrative scoping ··········································································································396

Configuring IPv6 multicast source registration ·································································································397

Disabling the switchover to SPT·························································································································398

Configuring IPv6 BIDIR-PIM·········································································································································399

IPv6 BIDIR-PIM configuration task list ················································································································399

Configuration prerequisites ································································································································399

Enabling IPv6 PIM-SM·········································································································································400

Enabling IPv6 BIDIR-PIM ·····································································································································400

Configuring an RP ···············································································································································401

Configuring a BSR···············································································································································403

Configuring IPv6 administrative scoping ··········································································································407

Configuring IPv6 PIM-SSM··········································································································································408

IPv6 PIM-SSM configuration task list ·················································································································408

Configuration prerequisites ································································································································408

Enabling IPv6 PIM-SM·········································································································································409

xi

Configuring the IPv6 SSM group range ···········································································································409

Configuring IPv6 PIM common features ····················································································································410

IPv6 PIM common feature configuration task list ·····························································································410

Configuration prerequisites ································································································································410

Configuring an IPv6 multicast data filter···········································································································411

Configuring a hello message filter ····················································································································411

Configuring IPv6 PIM hello options···················································································································412

Configuring the prune delay ······························································································································414

Configuring IPv6 PIM common timers···············································································································414

Configuring join/prune message sizes·············································································································415

Configuring IPv6 PIM to work with BFD············································································································416

Setting the DSCP value for IPv6 PIM messages································································································417

Displaying and maintaining IPv6 PIM························································································································417

IPv6 PIM configuration examples ·······························································································································418

IPv6 PIM-DM configuration example·················································································································418

IPv6 PIM-SM non-scoped zone configuration example···················································································421

IPv6 PIM-SM admin-scope zone configuration example·················································································426

IPv6 BIDIR-PIM configuration example ··············································································································439

IPv6 PIM-SSM configuration example ···············································································································444

Troubleshooting IPv6 PIM configuration ····················································································································447

Failure to build a multicast distribution tree correctly······················································································447

IPv6 multicast data abnormally terminated on an intermediate router··························································448

RPS cannot join SPT in IPv6 PIM-SM ·················································································································448

RPT establishment failure or source registration failure in IPv6 PIM-SM························································449

Configuring IPv6 MBGP (available only on the S5500-EI)·················································································· 450

IPv6 MBGP overview ···················································································································································450

IPv6 MBGP configuration task list ······························································································································450

Configuring basic IPv6 MBGP functions····················································································································451

Configuration prerequisites ································································································································451

Configuring an IPv6 MBGP peer·······················································································································451

Configuring a preferred value for routes from a peer or a peer group ························································452

Controlling route distribution and reception ·············································································································452

Configuration prerequisites ································································································································452

Injecting a local IPv6 MBGP route·····················································································································452

Configuring IPv6 MBGP route redistribution ····································································································453

Configuring IPv6 MBGP route summarization ·································································································453

Advertising a default route to a peer or peer group ·······················································································453

Configuring outbound IPv6 MBGP route filtering ····························································································454

Configuring inbound IPv6 MBGP route filtering ······························································································455

Configuring IPv6 MBGP route dampening·······································································································455

Configuring IPv6 MBGP route attributes····················································································································456

Configuration prerequisites ································································································································456

Configuring IPv6 MBGP route preferences·······································································································456

xii

Configuring the default local preference ··········································································································456

Configuring the MED attribute ···························································································································457

Configuring the NEXT_HOP attribute················································································································457

Configuring the AS_PATH attribute ···················································································································458

Tuning and optimizing IPv6 MBGP networks············································································································458

Configuration prerequisites ································································································································458

Configuring IPv6 MBGP soft reset ·····················································································································459

Enabling the IPv6 MBGP orf capability ············································································································460

Configuring the maximum number of equal-cost routes for load-balancing ·················································461

Configuring a large scale IPv6 MBGP network········································································································461

Configuring an IPv6 MBGP peer group ···········································································································461

Configuring IPv6 MBGP community··················································································································462

Configuring an IPv6 MBGP route reflector ·······································································································463

Displaying and maintaining IPv6 MBGP···················································································································463

Displaying IPv6 MBGP········································································································································463

Resetting IPv6 MBGP connections ·····················································································································465

Clearing IPv6 MBGP information ······················································································································465

IPv6 MBGP configuration example ····························································································································465

Index ········································································································································································ 469

1

Multicast overview

Introduction to multicast

As a technique that coexists with unicast and broadcast, the multicast technique effectively addresses the

issue of point-to-multipoint data transmission. By enabling high-efficiency point-to-multipoint data

transmission over a network, multicast greatly saves network bandwidth and reduces network load.

By using multicast technology, a network operator can easily provide new value-added services, such as

live webcasting, web TV, distance learning, telemedicine, web radio, real time video conferencing, and

other bandwidth-critical and time-critical information services.

The term "router " in this document refers to both routers and Layer 3 switches.

Unless otherwise stated, the term "multicast" in this document refers to IP multicast.

Information transmission techniques

The information transmission techniques include unicast, broadcast, and multicast.

Unicast

In unicast transmission, the information source must send a separate copy of information to each host that

needs the information.

H3C S5500-EI series User manual

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