Cisco ASR 9000 Series User manual

Cisco ASR 9000 Series Aggregation Services Router Multicast
Configuration Guide, Release 6.0.x
First Published: 2016-05-06
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CONTENTS
Preface Preface xiii
Changes to This Document xiii
Obtaining Documentation and Submitting a Service Request xiii
CHAPTER 1 New and Changed Multicast Features 1
New and Changed Multicast Features 1
New and Changed Multicast Features 1
CHAPTER 2 Implementing Layer-2 Multicast with IGMP Snooping 3
Prerequisites for IGMP Snooping 4
Restrictions for IGMP Snooping 4
Information About IGMP Snooping 4
IGMP Snooping Overview 4
Description of Basic Functions 4
High Availability Features 5
Bridge Domain Support 5
Multicast Router and Host Ports 5
Multicast Router Discovery and Static Configuration 6
Multicast Traffic Handling within a Bridge Domain with IGMP Snooping Enabled 6
Multichassis Link Aggregation 8
Bidirectional Internet Group Management Protocol Snoop Synchronization for Satellite
Dual-Homed System 8
Restrictions 9
Information About IGMP Snooping Configuration Profiles 9
Creating Profiles 10
Attaching and Detaching Profiles 10
Changing Profiles 10
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Configuring Access Control 10
Default IGMP Snooping Configuration Settings 12
IGMP Snooping Configuration at the Bridge Domain Level 13
IGMP Minimum Version 13
System IP Address 13
Group Membership Interval, Robustness Variable, and Query Interval 13
Report Suppression (IGMPv2) and Proxy Reporting (IGMPv3) 14
Group Leave Processing 14
Reaction to Topology Change Notifications 16
IGMP Snooping Packet Checks 17
Startup Query Configuration 17
IGMP Snooping Configuration at the Host Port Level 18
Router Guard and Static Mrouter 18
Immediate-Leave 18
Static Groups 18
Internal Querier 19
When to Use an Internal Querier 19
Internal Querier Default Configuration 19
Internal Querier Processing 20
Querier Election for One Active Querier 20
Internal Querier Reaction to TCNs 21
How to Configure IGMP Snooping 21
Creating an IGMP Snooping Profile 21
Where to Go Next 22
Attaching a Profile and Activating IGMP Snooping on a Bridge Domain 22
Detaching a Profile and Deactivating IGMP Snooping on a Bridge Domain 24
Attaching and Detaching Profiles to Ports Under a Bridge 25
Adding Static Mrouter Configuration to a Profile 27
Where to Go Next 28
Adding Router Guard to a Profile 28
Where to Go Next 29
Configuring Immediate-Leave 30
Where to Go Next 31
Configuring Static Groups 31
Where to Go Next 32
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Configuring an Internal Querier 32
Where to Go Next 33
Verifying Multicast Forwarding 33
Configuring Group Limits 34
Configuring route-policy 34
Configuring group limit 35
Configuring access-groups 36
Configuration Examples for IGMP Snooping 37
Configuring IGMP Snooping on Physical Interfaces Under a Bridge: Example 37
Configuring IGMP Snooping on VLAN Interfaces Under a Bridge: Example 38
Configuring IGMP Snooping on Ethernet Bundles Under a Bridge: Example 38
Configuring IGMP Snooping on VFIs Under a Bridge: Example 40
Configuring IGMP access-groups 42
Configuring IGMP Snooping over MCLAG: Example 43
Case 1: Downstream MCLAG 43
Case 2 : Upstream MCLAG 48
Additional References 53
CHAPTER 3 Implementing MLD Snooping 55
MLD Snooping 56
Prerequisites for MLD Snooping 56
Restrictions for MLD Snooping 56
Advantages of MLD Snooping 56
High Availability (HA) features for MLD 57
Bridge Domain Support for MLD 57
Multicast Router and Host Ports 57
Multicast Router Discovery for MLD 58
Multicast Traffic Handling for MLD 58
Creating a MLD Snooping Profile 59
Activating MLD Snooping on a Bridge Domain 60
Deactivating MLD Snooping on a Bridge Domain 61
Configuring Static Mrouter Ports (MLD) 63
Configuring Router Guard (MLD) 63
Configuring Immediate-leave for MLD 65
Configuring Internal Querier for MLD 66
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Configuring Static Groups for MLD 67
Configuring MLD Snooping 68
Configuring MLD Snooping on Ethernet Bundles 68
CHAPTER 4 Implementing Layer-3 Multicast Routing on Cisco IOS XR Software 71
Prerequisites for Implementing Multicast Routing 73
Information About Implementing Multicast Routing 73
Key Protocols and Features Supported in the Cisco IOS XR Software Multicast Routing
Implementation 73
Multicast Routing Functional Overview 74
Multicast Routing Implementation 75
PIM-SM, PIM-SSM, and PIM-BIDIR 76
PIM-SM Operations 76
PIM-SSM Operations 77
PIM-Bidirectional Operations 77
Restrictions for PIM-SM and PIM-SSM, and PIM BIDIR 77
Internet Group Management Protocol 77
IGMP Versions 78
IGMP Routing Example 78
Configuring IGMP Per Interface States Limit 79
Protocol Independent Multicast 80
PIM-Sparse Mode 81
PIM-Source Specific Multicast 81
DNS-based SSM Mapping 81
PIM-Bidirectional Mode 83
Configuring PIM Per Interface States Limit 84
PIM Shared Tree and Source Tree (Shortest Path Tree) 85
Multicast-Intact 86
Designated Routers 87
Rendezvous Points 88
Auto-RP 89
PIM Bootstrap Router 90
Reverse-Path Forwarding 90
Multicast Non-Stop Routing 90
Failure Scenarios in NSR 91
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Multicast VPN 91
Multicast VPN Routing and Forwarding 92
Multicast Distribution Tree Tunnels 92
InterAS Support on Multicast VPN 93
IPv6 Connectivity over MVPN 94
BGP Requirements 95
Segmented Multicast - Overview 95
Segmented Multicast - Examples 96
Segmented Multicast - Examples 97
Segmented Multicast Stitching with inter-AS Solution 99
Configuring Segmented Multicast Stitching 99
Configuration on a PE Router 100
Configuration on a ABR/ASBR 101
Multitopology Routing 101
Multicast VPN Extranet Routing 102
Information About Extranets 102
Information About the Extranet MVPN Routing Topology 103
RPF Policies in an Extranet 105
Multicast VPN Hub and Spoke Topology 105
Realizing the Hub and Spoke Topology 106
Label Switched Multicast (LSM) Multicast Label Distribution Protocol (mLDP) based Multicast
VPN (mVPN) Support 107
Benefits of LSM MLDP based MVPN 107
Configuring MLDP MVPN 107
P2MP and MP2MP Label Switched Paths 108
Packet Flow in mLDP-based Multicast VPN 109
Realizing a mLDP-based Multicast VPN 109
Characteristics of mLDP Profiles 109
Configuration rules for profiles 116
MLDP inband signaling 117
Summary of Supported MVPN Profiles 117
LSP-switch for P2MP-TE 118
Configuration Process for MLDP MVPN (Intranet) 118
MLDP Loop-Free Alternative Fast Reroute 120
Advantages of LFA FRR 122
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MLDP LFA FRR - Features 122
Limitations of LFA FRR 123
MLDP LFA FRR - Working 123
MLDP LFA FRR - Behavior 125
Configurations to Enable LFA FRR 126
Configuring Router OSPF LFA FRR 127
Enabling Per Prefix LFA 128
Adding Interfaces to LFA Candidate List 129
Exclude Interface from Backup 130
Restricting the Backup Interfaces to the LFA Candidate List 131
Limiting the Per-Prefix Calculation by Prefix-Priority 132
Disabling Load Sharing of the Backup Paths 133
Configuring Router ISIS LFA FRR 134
Configuring Bidirectional Forwarding Detection 136
Configuring MPLS LFA FRR 140
Make Before Break Configuration for LFA FRR 141
Configuring Make Before Break Delay and Delete 143
Configuring FRR Time for Scalable Number of mLDP LSPs 145
MLDP Carrier Supporting Carrier Based MVPN 146
MLDP CsC - Restrictions 146
CsC Configuration Example - Overview 147
Configuration Changes for CsC 152
Configuration Changes for IGP for CsC 152
Configuration Changes for Supporting MLDP CsC 153
Configuration Changes for iBGP and eBGP for CsC 154
Configuration Changes for Multicast for CsC 156
Multipoint Label Distribution Protocol Route Policy Map 157
Configuring mLDP User Interface (Opaque Types) Using the Routing Policy 158
Configuring the mLDP User Interface for LDP Opaque Global ID Using the
Routing Policy 159
Configuring the mLDP User Interface for LDP Opaque IPv4 Using the Routing
Policy 160
Configuring the mLDP User Interface for LDP Opaque IPv6 Using the Routing
Policy 161
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Configuring the mLDP User Interface for LDP Opaque MDT Using the Routing
Policy 162
Configuring the mLDP User Interface for LDP Opaque Static ID Using the Routing
Policy 163
Configuring the mLDP User Interface for LDP Opaque Recursive Using the Routing
Policy 164
Configuring the mLDP User Interface for LDP Opaque Recursive-RD Using the
Routing Policy 165
Configuring the mLDP User Interface for LDP Opaque VPNv4 Using the Routing
Policy 166
Configuring the mLDP User Interface for LDP Opaque VPNv6 Using the Routing
Policy 167
Configuring mLDP FEC at the Root Node 168
Configuring the mLDP FEC at the Root Node Using the Route Policy 168
Configuring the mLDP User Interface to Filter Label Mappings 169
Configuring the mLDP User Interface to Filter Label Mappings 170
Configuring the mLDP User Interface for Feature Filtering 171
Configuring the mLDP User Interface for Feature Filtering - MoFRR 171
Configuring the mLDP User Interface for Feature Filtering - Make-before-break 172
Configuring the mLDP User Interface for Feature Filtering - Recursive FEC 174
Limitations of Route Policy Map 175
Next-Generation Multicast VPN 176
Supported Features 176
PE-PE Ingress Replication 179
MVPN over GRE 179
Native Multicast 180
GRE Limitations 181
Signaling and RPF on GRE Tunnels 182
PIM Registration 182
Auto-RP 182
Multicast IRB 183
Supported bridge port types 183
Restrictions 183
Multicast IRB 183
Multicast support for PW-HE interfaces 183
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Multicast Source Discovery Protocol 184
VRF-aware MSDP 184
Multicast Nonstop Forwarding 184
Multicast Configuration Submodes 185
Multicast-Routing Configuration Submode 185
PIM Configuration Submode 185
IGMP Configuration Submode 186
MLD Configuration Submode 186
MSDP Configuration Submode 186
Understanding Interface Configuration Inheritance 186
Understanding Interface Configuration Inheritance Disablement 187
Understanding Enabling and Disabling Interfaces 187
Multicast Routing Information Base 188
Multicast Forwarding Information Base 188
MSDP MD5 Password Authentication 188
Overriding VRFs in IGMP Interfaces 189
VRF support for MLD 189
How to Implement Multicast Routing 189
Configuring PIM-SM and PIM-SSM 190
Configuring PIM-SSM for Use in a Legacy Multicast Deployment 191
Restrictions for PIM-SSM Mapping 192
Configuring a Set of Access Control Lists for Static SSM Mapping 192
Configuring a Set of Sources for SSM Mapping 193
Configuring the DNS-based SSM Mapping 194
Configuring a Static RP and Allowing Backward Compatibility 195
Configuring Auto-RP to Automate Group-to-RP Mappings 196
Configuring the Bootstrap Router 198
Calculating Rates per Route 201
Configuring Multicast Nonstop Forwarding 203
Configuring Multicast VPN 205
Prerequisites for Multicast VPN 206
Restrictions for Multicast VPN for Multicast Routing 206
Enabling a VPN for Multicast Routing 207
Specifying the PIM VRF Instance 209
Specifying the IGMP VRF Instance 210
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