Cisco Catalyst 3650 User manual

IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE
(Catalyst 3650 Switches)
First Published: October 10, 2013
Last Modified: October 22, 2013
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: [phone]
800 553-NETS (6387)
Fax: [phone]
Text Part Number: OL-29890-01

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS,
INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH
THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY,
CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.
The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB's public domain version
of the UNIX operating system. All rights reserved. Copyright ©1981, Regents of the University of California.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS" WITH ALL FAULTS.
CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT
LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS
HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network
topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional
and coincidental.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: http://
www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership
relationship between Cisco and any other company. (1110R)
©2013 Cisco Systems, Inc. All rights reserved.

CONTENTS
Preface Preface xix
Document Conventions xix
Related Documentation xxi
Obtaining Documentation and Submitting a Service Request xxi
CHAPTER 1 Using the Command-Line Interface 1
Information About Using the Command-Line Interface 1
Command Modes 1
Using the Help System 3
Understanding Abbreviated Commands 4
No and Default Forms of Commands 5
CLI Error Messages 5
Configuration Logging 5
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
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
OL-29890-01 iii

Information About Using The Web GUI 13
Web GUI Features 13
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 Configuring IGMP 21
Finding Feature Information 21
Restrictions for Configuring IGMP 21
Information About IGMP 22
IP Multicast Group Addresses 22
IGMP Versions 23
IGMP Version 1 23
IGMP Version 2 23
IGMP Version 3 23
IGMP Version Differences 24
IGMPv3 Host Signalling 26
IGMP Join and Leave Process 27
IGMP Join Process 27
IGMP Leave Process 27
IGMP Snooping 28
Joining a Multicast Group 28
Leaving a Multicast Group 30
Immediate Leave 31
IGMP Configurable-Leave Timer 31
IGMP Report Suppression 31
IGMP Snooping and Device Stacks 32
IGMP Filtering and Throttling Overview 32
Default IGMP Configuration 32
Default IGMP Snooping Configuration 33
Default IGMP Filtering and Throttling Configuration 33
How to Configure IGMP 34
Configuring the Device as a Member of a Group (CLI) 34
Controlling Access to IP Multicast Group (CLI) 36
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
iv OL-29890-01
Contents

Modifying the IGMP Host-Query Message Interval (CLI) 38
Changing the IGMP Query Timeout for IGMPv2 (CLI) 40
Changing the Maximum Query Response Time for IGMPv2 (CLI) 42
Configuring the Device as a Statically Connected Member (CLI) 44
Configuring IGMP Profiles (CLI) 45
Applying IGMP Profiles (CLI) 47
Setting the Maximum Number of IGMP Groups (CLI) 49
Configuring the IGMP Throttling Action (CLI) 50
Configuring the Device to Forward Multicast Traffic in the Absence of Directly Connected
IGMP Hosts 53
Controlling Access to an SSM Network Using IGMP Extended Access Lists 54
How to Configure IGMP Snooping 57
Enabling or Disabling IGMP Snooping on a Device (CLI) 57
Enabling or Disabling IGMP Snooping on a VLAN Interface (CLI) 59
Setting the Snooping Method (CLI) 60
Configuring a Multicast Router Port (CLI) 61
Configuring a Host Statically to Join a Group (CLI) 62
Enabling IGMP Immediate Leave (CLI) 64
Configuring the IGMP Leave Timer (CLI) 65
Configuring the IGMP Robustness-Variable (CLI) 67
Configuring the IGMP Last Member Query Count (CLI) 68
Configuring TCN-Related Commands 70
Controlling the Multicast Flooding Time After a TCN Event (CLI) 70
Recovering from Flood Mode (CLI) 71
Disabling Multicast Flooding During a TCN Event (CLI) 73
Configuring the IGMP Snooping Querier (CLI) 74
Disabling IGMP Report Suppression (CLI) 77
Monitoring IGMP 78
Displaying IGMP Snooping Information 79
Displaying IGMP Filtering and Throttling Configuration 80
Configuration Examples for IGMP 81
Example: Configuring the Device as a Member of a Multicast Group 81
Example: Controlling Access to Multicast Groups 81
Examples: Configuring IGMP Snooping 81
Examples: Configuring Filtering and Throttling 82
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
OL-29890-01 v
Contents

Example: Interface Configuration as a Routed Port 83
Example: Interface Configuration as an SVI 83
Example: Configuring the Device to Forward Multicast Traffic in the Absence of Directly
Connected IGMP Hosts 84
Controlling Access to an SSM Network Using IGMP Extended Access Lists 84
Example: Denying All States for a Group G 85
Example: Denying All States for a Source S 85
Example: Permitting All States for a Group G 85
Example: Permitting All States for a Source S 86
Example: Filtering a Source S for a Group G 86
Where to Go Next for IGMP 86
Additional References 87
Feature History and Information for IGMP 88
CHAPTER 4 Configuring IGMP Proxy 89
Finding Feature Information 89
Prerequisites for IGMP Proxy 89
Information about IGMP Proxy 90
IGMP Proxy 90
How to Configure IGMP Proxy 92
Configuring the Upstream UDL Device for IGMP UDLR 92
Configuring the Downstream UDL Device for IGMP UDLR with IGMP Proxy Support 93
Configuration Examples for IGMP Proxy 96
Example: IGMP Proxy Configuration 96
Where to Go Next for IGMP Proxy 97
Additional References 98
Feature History and Information for IGMP Proxy 99
CHAPTER 5 Constraining IP Multicast in Switched Ethernet 101
Finding Feature Information 101
Prerequisites for Constraining IP Multicast in a Switched Ethernet Network 101
Information About IP Multicast in a Switched Ethernet Network 102
IP Multicast Traffic and Layer 2 Switches 102
CGMP on Catalyst Switches for IP Multicast 102
IGMP Snooping 103
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
vi OL-29890-01
Contents

Router-Port Group Management Protocol (RGMP) 103
How to Constrain Multicast in a Switched Ethernet Network 104
Configuring Switches for IP Multicast 104
Configuring IGMP Snooping 104
Enabling CGMP 104
Configuring IP Multicast in a Layer 2 Switched Ethernet Network 105
Configuration Examples for Constraining IP Multicast in a Switched Ethernet Network 107
Example: CGMP Configuration 107
RGMP Configuration Example 107
Where to Go Next for Constraining IP Multicast in Switched Ethernet 108
Additional References 108
Feature History and Information for Constraining IP Multicast in a Switched Ethernet
Network 109
CHAPTER 6 Configuring PIM 111
Finding Feature Information 111
Prerequisites for Configuring PIM 111
Restrictions for Configuring PIM 112
Restrictions for Configuring Auto-RP 112
Restrictions for Auto-RP Enhancement 113
Restrictions for Configuring Auto-RP and BSR 113
Information About PIM 113
PIM Versions 114
PIMv1 and PIMv2 Interoperability 114
PIM Modes 115
PIM DM 115
PIM-SM 115
Multicast Source Discovery Protocol (MSDP) 116
PIM Stub Routing 116
IGMP Helper 117
Auto-RP 117
The Role of Auto-RP in a PIM Network 118
IP Multicast Boundary 119
Auto-RP Benefits 119
Benefits of Auto-RP in a PIM Network 120
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
OL-29890-01 vii
Contents

PIM v2 BSR 120
Multicast Forwarding and Reverse Path Check 120
PIM Shared Tree and Source Tree 122
Default PIM Routing Configuration 123
How to Configure PIM 124
Enabling PIM Stub Routing (CLI) 124
Configuring a Rendezvous Point 126
Manually Assigning an RP to Multicast Groups (CLI) 127
Setting Up Auto-RP in a New Internetwork (CLI) 129
Adding Auto-RP to an Existing Sparse-Mode Cloud (CLI) 131
Preventing Join Messages to False RPs (CLI) 134
Filtering Incoming RP Announcement Messages (CLI) 134
Configuring PIMv2 BSR 136
Defining the PIM Domain Border (CLI) 137
Defining the IP Multicast Boundary (CLI) 139
Configuring Candidate BSRs (CLI) 141
Configuring the Candidate RPs (CLI) 142
Configuring Auto-RP and BSR for the Network (CLI) 144
Configuring Sparse Mode with Auto-RP 146
Delaying the Use of PIM Shortest-Path Tree (CLI) 151
Modifying the PIM Router-Query Message Interval (CLI) 153
Monitoring PIM 155
Monitoring RP Mapping 156
Troubleshooting PIMv1 and PIMv2 Interoperability Problems 156
Configuration Examples for PIM 156
Example: Enabling PIM Stub Routing 156
Example: Verifying PIM Stub Routing 157
Example: Manually Assigning an RP to Multicast Groups 157
Example: Configuring Auto-RP 157
Example: Sparse Mode with Auto-RP 158
Example: Defining the IP Multicast Boundary to Deny Auto-RP Information 158
Example: Filtering Incoming RP Announcement Messages 158
Example: Preventing Join Messages to False RPs 159
Example: Configuring Candidate BSRs 159
Example: Configuring Candidate RPs 159
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
viii OL-29890-01
Contents

Where to Go Next for PIM 160
Additional References 160
Feature History and Information for PIM 162
CHAPTER 7 Configuring PIM MIB Extension for IP Multicast 163
Finding Feature Information 163
Information About PIM MIB Extension for IP Multicast 163
PIM MIB Extensions for SNMP Traps for IP Multicast 163
Benefits of PIM MIB Extensions 164
How to Configure PIM MIB Extension for IP Multicast 164
Enabling PIM MIB Extensions for IP Multicast 164
Configuration Examples for PIM MIB Extensions 166
Example Enabling PIM MIB Extensions for IP Multicast 166
Additional References 166
CHAPTER 8 Configuring MSDP 169
Finding Feature Information 169
Prerequisites for Using MSDP to Interconnect Multiple PIM-SM Domains 169
Information About Using MSDP to Interconnect Multiple PIM-SM Domains 170
Benefits of Using MSDP to Interconnect Multiple PIM-SM Domains 170
Use of MSDP to Interconnect Multiple PIM-SM Domains 170
MSDP Message Types 172
SA Messages 173
SA Request Messages 173
SA Response Messages 173
Keepalive Messages 173
SA Message Origination Receipt and Processing 174
SA Message Origination 174
SA Message Receipt 174
How RPF Check Rules Are Applied to SA Messages 174
How the Software Determines the Rule to Apply to RPF Checks 175
Rule 1 of RPF Checking of SA Messages in MSDP 175
Implications of Rule 1 of RPF Checking on MSDP 175
Rule 2 of RPF Checking of SA Messages in MSDP 176
Implications of Rule 2 of RPF Checking on MSDP 176
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
OL-29890-01 ix
Contents

Rule 3 of RPF Checking of SA Messages in MSDP 176
SA Message Processing 177
MSDP Peers 177
MSDP MD5 Password Authentication 177
How MSDP MD5 Password Authentication Works 178
Benefits of MSDP MD5 Password Authentication 178
SA Message Limits 178
MSDP Keepalive and Hold-Time Intervals 178
MSDP Connection-Retry Interval 179
Default MSDP Peers 179
MSDP Mesh Groups 180
Benefits of MSDP Mesh Groups 181
SA Origination Filters 181
Use of Outgoing Filter Lists in MSDP 182
Use of Incoming Filter Lists in MSDP 182
TTL Thresholds in MSDP 183
SA Request Messages 183
SA Request Filters 184
How to Use MSDP to Interconnect Multiple PIM-SM Domains 184
Configuring an MSDP Peer 184
Shutting Down an MSDP Peer 186
Configuring MSDP MD5 Password Authentication Between MSDP Peers 187
Troubleshooting Tips 188
Preventing DoS Attacks by Limiting the Number of SA Messages Allowed in the SA Cache
from Specified MSDP Peers 189
Adjusting the MSDP Keepalive and Hold-Time Intervals 190
Adjusting the MSDP Connection-Retry Interval 192
Configuring a Default MSDP Peer 192
Configuring an MSDP Mesh Group 193
Controlling SA Messages Originated by an RP for Local Sources 195
Controlling the Forwarding of SA Messages to MSDP Peers Using Outgoing Filter
Lists 196
Controlling the Receipt of SA Messages from MSDP Peers Using Incoming Filter Lists 197
Using TTL Thresholds to Limit the Multicast Data Sent in SA Messages 198
Requesting Source Information from MSDP Peers 199
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
xOL-29890-01
Contents