Cisco Catalyst 3850 series Configuration manual

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CONTENTS

Preface

Preface xxi

Document Conventions xxi

Related Documentation xxiii

Obtaining Documentation and Submitting a Service Request xxiii

CHAPTER 1

Using the Command-Line Interface 1

Information About Using the Command-Line Interface 1

Command Modes 1

Understanding Abbreviated Commands 3

No and Default Forms of Commands 3

CLI Error Messages 4

Configuration Logging 4

Using the Help System 4

How to Use the CLI to Configure Features 6

Configuring the Command History 6

Changing the Command History Buffer Size 6

Recalling Commands 6

Disabling the Command History Feature 7

Enabling and Disabling Editing Features 7

Editing Commands Through Keystrokes 8

Editing Command Lines That Wrap 9

Searching and Filtering Output of show and more Commands 10

Accessing the CLI 11

Accessing the CLI Through a Console Connection or Through Telnet 11

CHAPTER 2

Using the Web Graphical User Interface 13

Prerequisites for Using the Web GUI 13

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Information About Using The Web GUI 13

Web GUI Features 14

Connecting the Console Port of the Device 15

Logging On to the Web GUI 15

Enabling Web and Secure Web Modes 15

Configuring the Device Web GUI 16

CHAPTER 3

IP Multicast Routing Technology Overview 21

Finding Feature Information 21

Information About IP Multicast Technology 21

Role of IP Multicast in Information Delivery 21

IP Multicast Routing Protocols 22

Multicast Group Transmission Scheme 22

IP Multicast Boundary 24

IP Multicast Group Addressing 25

IP Class D Addresses 25

IP Multicast Address Scoping 25

Layer 2 Multicast Addresses 27

IP Multicast Delivery Modes 27

Source Specific Multicast 28

Additional References 28

CHAPTER 4

Configuring IGMP 31

Finding Feature Information 31

Prerequisites for IGMP and IGMP Snooping 31

Prerequisites for IGMP 31

Prerequisites for IGMP Snooping 32

Restrictions for IGMP and IGMP Snooping 32

Restrictions for Configuring IGMP 32

Restrictions for IGMP Snooping 33

Information About IGMP 33

Role of the Internet Group Management Protocol 33

IGMP Multicast Addresses 34

IGMP Versions 34

IGMP Version 1 35

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IGMP Version 2 35

IGMP Version 3 35

IGMPv3 Host Signaling 35

IGMP Versions Differences 35

IGMP Join and Leave Process 38

IGMP Join Process 38

IGMP Leave Process 38

IGMP Snooping 39

Joining a Multicast Group 39

Leaving a Multicast Group 41

Immediate Leave 42

IGMP Configurable-Leave Timer 42

IGMP Report Suppression 42

IGMP Snooping and Device Stacks 43

IGMP Filtering and Throttling 43

Default IGMP Configuration 43

Default IGMP Snooping Configuration 44

Default IGMP Filtering and Throttling Configuration 44

How to Configure IGMP 45

Configuring the Device as a Member of a Group (CLI) 45

Controlling Access to IP Multicast Group (CLI) 47

Changing the IGMP Version(CLI) 49

Modifying the IGMP Host-Query Message Interval (CLI) 51

Changing the IGMP Query Timeout for IGMPv2 (CLI) 53

Changing the Maximum Query Response Time for IGMPv2 (CLI) 55

Configuring the Device as a Statically Connected Member (CLI) 57

Configuring IGMP Profiles (CLI) 59

Applying IGMP Profiles (CLI) 61

Setting the Maximum Number of IGMP Groups (CLI) 62

Configuring the IGMP Throttling Action (CLI) 64

Configuring the Device to Forward Multicast Traffic in the Absence of Directly Connected

IGMP Hosts 66

Controlling Access to an SSM Network Using IGMP Extended Access Lists 67

How to Configure IGMP Snooping 70

Enabling IGMP Snooping 70

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Enabling or Disabling IGMP Snooping on a VLAN Interface (CLI) 71

Setting the Snooping Method (CLI) 73

Configuring a Multicast Router Port (CLI) 74

Configuring a Host Statically to Join a Group (CLI) 76

Enabling IGMP Immediate Leave (CLI) 77

Configuring the IGMP Leave Timer (CLI) 78

Configuring the IGMP Robustness-Variable (CLI) 80

Configuring the IGMP Last Member Query Count (CLI) 81

Configuring TCN-Related Commands 83

Controlling the Multicast Flooding Time After a TCN Event (CLI) 83

Recovering from Flood Mode (CLI) 84

Disabling Multicast Flooding During a TCN Event (CLI) 86

Configuring the IGMP Snooping Querier (CLI) 87

Disabling IGMP Report Suppression (CLI) 89

Monitoring IGMP 91

Monitoring IGMP Snooping Information 91

Monitoring IGMP Filtering and Throttling Configuration 93

Configuration Examples for IGMP 93

Example: Configuring the Device as a Member of a Multicast Group 93

Example: Controlling Access to Multicast Groups 93

Examples: Configuring IGMP Snooping 94

Example: Configuring IGMP Profiles 95

Example: Applying IGMP Profile 95

Example: Setting the Maximum Number of IGMP Groups 95

Example: Interface Configuration as a Routed Port 95

Example: Interface Configuration as an SVI 96

Example: Configuring the Device to Forward Multicast Traffic in the Absence of Directly

Connected IGMP Hosts 96

Controlling Access to an SSM Network Using IGMP Extended Access Lists 96

Example: Denying All States for a Group G 97

Example: Denying All States for a Source S 97

Example: Permitting All States for a Group G 97

Example: Permitting All States for a Source S 97

Example: Filtering a Source S for a Group G 98

Additional References 98

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Feature History and Information for IGMP 99

CHAPTER 5

Configuring IGMP Proxy 101

Finding Feature Information 101

Prerequisites for IGMP Proxy 101

Information about IGMP Proxy 102

IGMP Proxy 102

How to Configure IGMP Proxy 104

Configuring the Upstream UDL Device for IGMP UDLR 104

Configuring the Downstream UDL Device for IGMP UDLR with IGMP Proxy Support 105

Configuration Examples for IGMP Proxy 108

Example: IGMP Proxy Configuration 108

Additional References 109

Feature History and Information for IGMP Proxy 110

CHAPTER 6

Constraining IP Multicast in Switched Ethernet 111

Finding Feature Information 111

Prerequisites for Constraining IP Multicast in a Switched Ethernet Network 111

Information About IP Multicast in a Switched Ethernet Network 112

IP Multicast Traffic and Layer 2 Switches 112

CGMP on Catalyst Switches for IP Multicast 112

IGMP Snooping 113

Router-Port Group Management Protocol (RGMP) 113

How to Constrain Multicast in a Switched Ethernet Network 114

Configuring Switches for IP Multicast 114

Configuring IGMP Snooping 114

Enabling CGMP 114

Configuring IP Multicast in a Layer 2 Switched Ethernet Network 115

Configuration Examples for Constraining IP Multicast in a Switched Ethernet Network 117

Example: CGMP Configuration 117

RGMP Configuration Example 117

Additional References 118

Feature History and Information for Constraining IP Multicast in a Switched Ethernet

Network 119

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CHAPTER 7

Configuring PIM 121

Finding Feature Information 121

Prerequisites for PIM 121

Restrictions for PIM 122

PIMv1 and PIMv2 Interoperability 122

Restrictions for Configuring PIM Stub Routing 123

Restrictions for Configuring Auto-RP and BSR 123

Restrictions for Auto-RP Enhancement 125

Information About PIM 125

Protocol Independent Multicast Overview 125

PIM Dense Mode 125

PIM Sparse Mode 126

Multicast Source Discovery Protocol (MSDP) 126

Sparse-Dense Mode 127

PIM Versions 127

PIM Stub Routing 128

IGMP Helper 129

Rendezvous Points 129

Auto-RP 130

The Role of Auto-RP in a PIM Network 131

Multicast Boundaries 131

Sparse-Dense Mode for Auto-RP 132

Auto-RP Benefits 133

Benefits of Auto-RP in a PIM Network 133

PIMv2 Bootstrap Router 133

PIM Domain Border 134

Multicast Forwarding 134

Multicast Distribution Source Tree 134

Multicast Distribution Shared Tree 135

Source Tree Advantage 136

Shared Tree Advantage 136

PIM Shared Tree and Source Tree 137

Reverse Path Forwarding 138

RPF Check 139

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Default PIM Routing Configuration 140

How to Configure PIM 141

Enabling PIM Stub Routing (CLI) 141

Configuring a Rendezvous Point 143

Manually Assigning an RP to Multicast Groups (CLI) 144

Setting Up Auto-RP in a New Internetwork (CLI) 146

Adding Auto-RP to an Existing Sparse-Mode Cloud (CLI) 149

Preventing Join Messages to False RPs (CLI) 152

Filtering Incoming RP Announcement Messages (CLI) 152

Configuring PIMv2 BSR 154

Defining the PIM Domain Border (CLI) 155

Defining the IP Multicast Boundary (CLI) 156

Configuring Candidate BSRs (CLI) 159

Configuring the Candidate RPs (CLI) 160

Configuring Sparse Mode with Auto-RP(CLI) 162

Delaying the Use of PIM Shortest-Path Tree (CLI) 167

Modifying the PIM Router-Query Message Interval (CLI) 169

Verifying PIM Operations 171

Verifying IP Multicast Operation in a PIM-SM or a PIM-SSM Network 171

Verifying IP Multicast on the First Hop Router 172

Verifying IP Multicast on Routers Along the SPT 173

Verifying IP Multicast Operation on the Last Hop Router 174

Using PIM-Enabled Routers to Test IP Multicast Reachability 177

Configuring Routers to Respond to Multicast Pings 177

Pinging Routers Configured to Respond to Multicast Pings 179

Monitoring and Troubleshooting PIM 179

Monitoring PIM Information 179

Monitoring the RP Mapping and BSR Information 180

Troubleshooting PIMv1 and PIMv2 Interoperability Problems 181

Configuration Examples for PIM 181

Example: Enabling PIM Stub Routing 181

Example: Verifying PIM Stub Routing 182

Example: Manually Assigning an RP to Multicast Groups 182

Example: Configuring Auto-RP 182

Example: Sparse Mode with Auto-RP 183

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Example: Defining the IP Multicast Boundary to Deny Auto-RP Information 183

Example: Filtering Incoming RP Announcement Messages 183

Example: Preventing Join Messages to False RPs 184

Example: Configuring Candidate BSRs 184

Example: Configuring Candidate RPs 184

Additional References 185

Feature History and Information for PIM 187

CHAPTER 8

Configuring PIM MIB Extension for IP Multicast 189

Finding Feature Information 189

Information About PIM MIB Extension for IP Multicast 189

PIM MIB Extensions for SNMP Traps for IP Multicast 189

Benefits of PIM MIB Extensions 190

How to Configure PIM MIB Extension for IP Multicast 190

Enabling PIM MIB Extensions for IP Multicast 190

Configuration Examples for PIM MIB Extensions 192

Example Enabling PIM MIB Extensions for IP Multicast 192

Additional References 192

CHAPTER 9

Configuring MSDP 195

Finding Feature Information 195

195

Information About Using MSDP to Interconnect Multiple PIM-SM Domains 195

Benefits of Using MSDP to Interconnect Multiple PIM-SM Domains 195

196

MSDP Message Types 198

SA Messages 198

SA Request Messages 199

SA Response Messages 199

Keepalive Messages 199

SA Message Origination Receipt and Processing 199

SA Message Origination 199

SA Message Receipt 200

How RPF Check Rules Are Applied to SA Messages 200

How the Software Determines the Rule to Apply to RPF Checks 200

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Rule 1 of RPF Checking of SA Messages in MSDP 200

Implications of Rule 1 of RPF Checking on MSDP 201

Rule 2 of RPF Checking of SA Messages in MSDP 201

Implications of Rule 2 of RPF Checking on MSDP 202

Rule 3 of RPF Checking of SA Messages in MSDP 202

SA Message Processing 202

MSDP Peers 203

MSDP MD5 Password Authentication 203

How MSDP MD5 Password Authentication Works 203

Benefits of MSDP MD5 Password Authentication 203

SA Message Limits 204

MSDP Keepalive and Hold-Time Intervals 204

MSDP Connection-Retry Interval 204

Default MSDP Peers 205

MSDP Mesh Groups 206

Benefits of MSDP Mesh Groups 207

SA Origination Filters 207

Use of Outgoing Filter Lists in MSDP 208

Use of Incoming Filter Lists in MSDP 208

TTL Thresholds in MSDP 209

SA Request Messages 209

SA Request Filters 210

How to Use MSDP to Interconnect Multiple PIM-SM Domains 210

Configuring an MSDP Peer 210

Shutting Down an MSDP Peer 212

Configuring MSDP MD5 Password Authentication Between MSDP Peers 213

Troubleshooting Tips 214

Preventing DoS Attacks by Limiting the Number of SA Messages Allowed in the SA Cache

from Specified MSDP Peers 215

Adjusting the MSDP Keepalive and Hold-Time Intervals 216

Adjusting the MSDP Connection-Retry Interval 218

Configuring a Default MSDP Peer 218

Configuring an MSDP Mesh Group 219

Controlling SA Messages Originated by an RP for Local Sources 221

Controlling the Forwarding of SA Messages to MSDP Peers Using Outgoing Filter Lists 222

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Controlling the Receipt of SA Messages from MSDP Peers Using Incoming Filter Lists 223

Using TTL Thresholds to Limit the Multicast Data Sent in SA Messages 224

Requesting Source Information from MSDP Peers 225

Controlling the Response to Outgoing SA Request Messages from MSDP Peers Using SA

Request Filters 226

Including a Bordering PIM Dense Mode Region in MSDP 227

Configuring an Originating Address Other Than the RP Address 228

Monitoring MSDP 229

Clearing MSDP Connections Statistics and SA Cache Entries 232

Enabling SNMP Monitoring of MSDP 233

Troubleshooting Tips 234

Configuration Examples for Using MSDP to Interconnect Multiple PIM-SM Domains 235

Example: Configuring an MSDP Peer 235

Example: Configuring MSDP MD5 Password Authentication 235

Example: Configuring a Default MSDP Peer 236

Example: Configuring MSDP Mesh Groups 238

Additional References 238

Feature History and Information for Multicast Source Discovery Protocol 239

CHAPTER 10

Configuring Wireless Multicast 241

Finding Feature Information 241

Prerequisites for Configuring Wireless Multicast 241

Restrictions for Configuring Wireless Multicast 242

Restrictions for IPv6 Snooping 242

Restrictions for IPv6 RA Guard 242

Information About Wireless Multicast 242

Information About Multicast Optimization 243

IPv6 Global Policies 244

IPv6 RA Guard 244

Information About IPv6 Snooping 244

IPv6 Neighbor Discovery Inspection 244

IPv6 ND Inspection 245

IPv6 Device Tracking 245

IPv6 First-Hop Security Binding Table 245

Recovery Protocols and Prefix Lists 245

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IPv6 Device Tracking 245

IPv6 Address Glean 245

How to Configure Wireless Multicast 246

Configuring Wireless Multicast-MCMC Mode (CLI) 246

Configuring Wireless Multicast-MCUC Mode (CLI) 247

Configuring IPv6 Snooping (CLI) 248

Configuring IPv6 Snooping Policy (CLI) 249

Configuring Layer 2 Port as Multicast Router Port (CLI) 250

Configuring IPv6 RA Guard (CLI) 251

Configuring Non-IP Wireless Multicast (CLI) 252

Configuring Wireless Broadcast (CLI) 253

Configuring IP Multicast VLAN for WLAN (CLI) 254

Monitoring Wireless Multicast 255

Where to Go Next for Wireless Multicast 256

Additional References 257

CHAPTER 11

Configuring SSM 259

Finding Feature Information 259

Prerequisites for Configuring SSM 259

Restrictions for Configuring SSM 260

Information About SSM and SSM Mapping 261

SSM Components Overview 261

How SSM Differs from Internet Standard Multicast 261

SSM Operations 262

IGMPv3 Host Signaling 263

Benefits of SSM 263

SSM Mapping Overview 264

Static SSM Mapping 265

DNS-Based SSM Mapping 265

SSM Mapping Benefits 267

How to Configure SSM and SSM Mapping 267

Configuring Source Specific Multicast 267

Configuring SSM Mapping 270

Configuring Static SSM Mapping(CLI) 270

Configuring DNS-Based SSM Mapping(CLI) 271

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Configuring Static Traffic Forwarding with SSM Mapping 273

Configuring Static Traffic Forwarding with SSM Mapping (CLI) 274

Verifying SSM Mapping Configuration and Operation 276

Monitoring SSM and SSM Mapping 279

Monitoring SSM 279

Monitoring SSM Mapping 279

Configuration Examples for SSM and SSM Mapping 280

SSM with IGMPv3 Example 280

SSM Filtering Example 280

SSM Mapping Example 281

DNS Server Configuration Example 284

Additional References 284

Feature History and Information for SSM 286

CHAPTER 12

Configuring Basic IP Multicast Routing 287

Finding Feature Information 287

Prerequisites for Basic IP Multicast Routing 287

Restrictions for Basic IP Multicast Routing 288

Information About Basic IP Multicast Routing 288

Multicast Forwarding Information Base Overview 288

Multicast Routing and Device Stacks 289

Default IP Multicast Routing Configuration 289

How to Configure Basic IP Multicast Routing 290

Configuring Basic IP Multicast Routing 290

Configuring IP Multicast Forwarding (CLI) 293

Configuring a Static Multicast Route (mroute) (CLI) 294

Configuring Optional IP Multicast Routing Features 296

Defining the IP Multicast Boundary (CLI) 296

Configuring sdr Listener Support 298

Enabling sdr Listener Support (CLI) 298

Limiting How Long an sdr Cache Entry Exists (CLI) 300

Monitoring and Maintaining Basic IP Multicast Routing 301

Clearing Caches, Tables, and Databases 301

Displaying System and Network Statistics 302

Displaying Multicast Peers, Packet Rates and Loss Information, and Path Tracing 304

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Configuration Examples for IP Multicast Routing 305

Example: Configuring an IP Multicast Boundary 305

Example: Responding to mrinfo Requests 305

Additional References 306

Feature History and Information for IP Multicast 307

CHAPTER 13

Configuring the Service Discovery Gateway 309

Finding Feature Information 309

Restrictions for Configuring the Service Discovery Gateway 309

Information about the Service Discovery Gateway and mDNS 310

mDNS 310

mDNS-SD 310

mDNS-SD Considerations for Wireless Clients 311

Service Discovery Gateway 311

mDNS Gateway and Subnets 311

Filtering 312

How to Configure the Service Discovery Gateway 313

Configuring the Service List (CLI) 313

Configuring the Service List (GUI) 315

Enabling mDNS Gateway and Redistributing Services (CLI) 316

Configuring Interface Service Rules (GUI) 319

Configuring mDNS Global Rules (GUI) 319

Monitoring Service Discovery Gateway 320

Configuration Examples 321

Example: Specify Alternative Source Interface for Outgoing mDNS Packets 321

Example: Redistribute Service Announcements 321

Example: Disable Bridging of mDNS Packets to Wireless Clients 321

Example: Creating a Service-List, Applying a Filter and Configuring Parameters 322

Example: Enabling mDNS Gateway and Redistributing Services 322

Example: Global mDNS Configuration 322

Example: Interface mDNS Configuration 323

Monitoring Service Cache (GUI) 323

Monitoring Static Service Cache (GUI) 324

Where to Go Next for Configuring Services Discovery Gateway 325

Additional References 325

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Feature History and Information for Services Discovery Gateway 327

CHAPTER 14

IP Multicast Optimization: Optimizing PIM Sparse Mode in a Large IP Multicast

Deployment 329

Finding Feature Information 329

Prerequisites for Optimizing PIM Sparse Mode in a Large IP Multicast Deployment 329

Information About Optimizing PIM Sparse Mode in a Large IP Multicast Deployment 330

PIM Registering Process 330

PIM Version 1 Compatibility 330

PIM Designated Router 331

PIM Sparse-Mode Register Messages 331

Preventing Use of Shortest-Path Tree to Reduce Memory Requirement 331

PIM Shared Tree and Source Tree - Shortest-Path Tree 332

Benefit of Preventing or Delaying the Use of the Shortest-Path Tree 333

How to Optimize PIM Sparse Mode in a Large IP Multicast Deployment 333

Optimizing PIM Sparse Mode in a Large Deployment 333

Configuration Examples for Optimizing PIM Sparse Mode in a Large Multicast

Deployment 335

Optimizing PIM Sparse Mode in a Large IP Multicast Deployment Example 335

Additional References 336

Feature History and Information for Optimizing PIM Sparse Mode in a Large IP Multicast

Deployment 336

CHAPTER 15

IP Multicast Optimization: Multicast Subsecond Convergence 339

Finding Feature Information 339

Prerequisites for Multicast Subsecond Convergence 339

Restrictions for Multicast Subsecond Convergence 340

Information About Multicast Subsecond Convergence 340

Benefits of Multicast Subsecond Convergence 340

Multicast Subsecond Convergence Scalability Enhancements 340

PIM Router Query Messages 340

Reverse Path Forwarding 341

RPF Checks 341

Triggered RPF Checks 341

RPF Failover 341

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Topology Changes and Multicast Routing Recovery 342

How to Configure Multicast Subsecond Convergence 342

Modifying the Periodic RPF Check Interval 342

Configuring PIM RPF Failover Intervals 343

Modifying the PIM Router Query Message Interval 344

Verifying Multicast Subsecond Convergence Configurations 345

Configuration Examples for Multicast Subsecond Convergence 346

Example Modifying the Periodic RPF Check Interval 346

Example Configuring PIM RPF Failover Intervals 347

Modifying the PIM Router Query Message Interval Example 347

Additional References 347

Feature History and Information for Multicast Subsecond Convergence 348

CHAPTER 16

IP Multicast Optimization: IP Multicast Load Splitting across Equal-Cost Paths 349

Finding Feature Information 349

Prerequisites for IP Multicast Load Splitting across Equal-Cost Paths 349

Information About IP Multicast Load Splitting across Equal-Cost Paths 350

Load Splitting Versus Load Balancing 350

Default Behavior for IP Multicast When Multiple Equal-Cost Paths Exist 350

Methods to Load Split IP Multicast Traffic 352

Overview of ECMP Multicast Load Splitting 353

ECMP Multicast Load Splitting Based on Source Address Using the S-Hash

Algorithm 353

ECMP Multicast Load Splitting Based on Source and Group Address Using the Basic

S-G-Hash Algorithm 353

Predictability As a By-Product of Using the S-Hash and Basic S-G-Hash Algorithms 353

Polarization As a By-Product of Using the S-Hash and Basic S-G-Hash Algorithms 354

ECMP Multicast Load Splitting Based on Source Group and Next-Hop Address 355

Effect of ECMP Multicast Load Splitting on PIM Neighbor Query and Hello Messages

for RPF Path Selection 356

Effect of ECMP Multicast Loading Splitting on Assert Processing in PIM-DM and DF

Election in Bidir-PIM 356

Effect of ECMP Multicast Load Splitting on the PIM Assert Process in PIM-SM and

PIM-SSM 358

ECMP Multicast Load Splitting and Reconvergence When Unicast Routing Changes 359

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Use of BGP with ECMP Multicast Load Splitting 359

Use of ECMP Multicast Load Splitting with Static Mroutes 359

Alternative Methods of Load Splitting IP Multicast Traffic 360

How to Load Split IP Multicast Traffic over ECMP 360

Enabling ECMP Multicast Load Splitting 360

Prerequisites for IP Multicast Load Splitting - ECMP 361

Restrictions 361

Enabling ECMP Multicast Load Splitting Based on Source Address 361

Enabling ECMP Multicast Load Splitting Based on Source and Group Address 364

Enabling ECMP Multicast Load Splitting Based on Source Group and Next-Hop

Address 365

Configuration Examples for Load Splitting IP Multicast Traffic over ECMP 367

Example Enabling ECMP Multicast Load Splitting Based on Source Address 367

Example Enabling ECMP Multicast Load Splitting Based on Source and Group

Address 368

Example Enabling ECMP Multicast Load Splitting Based on Source Group and Next-Hop

Address 368

Additional References 368

Feature History and Information for Load Splitting IP Multicast Traffic over ECMP 369

CHAPTER 17

IP Multicast Optimization: SSM Channel Based Filtering for Multicast 371

Finding Feature Information 371

Prerequisites for SSM Channel Based Filtering for Multicast Boundaries 372

Information About the SSM Channel Based Filtering for Multicast Boundaries Feature 372

Rules for Multicast Boundaries 372

Benefits of SSM Channel Based Filtering for Multicast Boundaries 373

How to Configure SSM Channel Based Filtering for Multicast Boundaries 373

Configuring Multicast Boundaries 373

Configuration Examples for SSM Channel Based Filtering for Multicast Boundaries 375

Configuring the Multicast Boundaries Permitting and Denying Traffic Example 375

Configuring the Multicast Boundaries Permitting Traffic Example 375

Configuring the Multicast Boundaries Denying Traffic Example 375

Additional References 376

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Feature History and Information for SSM Channel Based Filtering for Multicast Boundaries 377

CHAPTER 18

IP Multicast Optimization: PIM Dense Mode State Refresh 379

Finding Feature Information 379

Prerequisite for PIM Dense Mode State Refresh 379

Restrictions on PIM Dense Mode State Refresh 380

Information About PIM Dense Mode State Refresh 380

PIM Dense Mode State Refresh Overview 380

Benefits of PIM Dense Mode State Refresh 380

How to Configure PIM Dense Mode State Refresh 381

Configuring PIM Dense Mode State Refresh 381

Verifying PIM Dense Mode State Refresh Configuration 381

Monitoring and Maintaining PIM DM State Refresh 382

Configuration Examples for PIM Dense Mode State Refresh 383

Originating Processing and Forwarding PIM Dense Mode State Refresh Control Messages

Example 383

Processing and Forwarding PIM Dense Mode State Refresh Control Messages Example 383

Additional References 383

Feature History and Information for PIM Dense Mode State Refresh 385

CHAPTER 19

IP Multicast Optimization: IGMP State Limit 387

Finding Feature Information 387

Prerequisites for IGMP State Limit 387

Restrictions for IGMP State Limit 388

Information About IGMP State Limit 388

IGMP State Limit 388

IGMP State Limit Feature Design 388

Mechanics of IGMP State Limiters 388

How to Configure IGMP State Limit 389

Configuring IGMP State Limiters 389

Configuring Global IGMP State Limiters 389

Configuring Per Interface IGMP State Limiters 390

Configuration examples for IGMP State Limit 392

Configuring IGMP State Limiters Example 392

Additional References 394

IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)

OL-32598-01 xix

Contents

Feature History and Information for IGMP State Limit 395

IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)

xx OL-32598-01

Contents

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Cisco Catalyst 3850 series Configuration manual

Cisco Catalyst 3850 series Configuration manual

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