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JUNOSE 11.2.X MULTICAST ROUTING
Juniper JUNOSE 11.2.X MULTICAST ROUTING
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P
ART
1
Int
ernet
P
r
ot
oc
ol
V
er
sion
4
•
Config
uring
IPv4
Multic
ast
on
pa
ge
3
•
Config
uring
IGMP
on
page
41
•
Config
uring
PIM
for
IPv4
Mul
tica
st
on
pag
e
77
•
Config
uring
DVMRP
on
pag
e
121
1
Copyright
©
2010
,
Juniper
Network
s,
Inc.
22
24
Table of Contents
Main Page
Default Chapter
9
Table of Contents
9
List of Tables
17
About the Documentation
19
Table 1: Notice Icons
20
Table 2: Text and Syntax Conventions
20
About the Documentation
21
Documentation Feedback
21
Obtaining Documentation
21
Requesting Technical Support
21
Self-Help Online Tools and Resources
22
Opening a Case with JTAC
22
Configuring PIM for Ipv4 Multicast
23
Internet Protocol Version
23
Chapter 1 Configuring Ipv4 Multicast
25
Ipv4 Multicast Overview
25
Internet Protocol Version
26
Reverse-Path Forwarding
26
Table 3: Function of Multicast Protocols on a Router
26
Multicast Packet Forwarding
27
Platform Considerations
27
Configuring Ipv4 Multicast
27
References
28
Before You Begin
28
Configuring the Switch Fabric Bandwidth
28
Enabling IP Multicast
28
Defining Static Routes for Reverse-Path Forwarding
29
Displaying Available Routes for Reverse-Path Forwarding
29
Enabling and Disabling RPF Checks
31
Using Unicast Routes for RPF
31
Defining Permanent IP Multicast Forwarding Entries
32
Defining a Multicast Bandwidth Map
32
How Adaptive Mode Works
33
Using the Autosense Mechanism
33
Figure 1: Example of Adaptive Ipv4 Multicast Bandwidth Detection
34
Multicast Bandwidth Map Example
35
Table 4: Adaptive Mode Algorithm Values
35
Configuring Multicast Qos Adjustment
37
Multicast OIF Mapping Case
37
Figure 2: Multicast OIF Mapping
38
Multicast Traffic Receipt Without Forwarding
38
Activating Multicast Qos Adjustment Functions
39
Configuring Hardware Multicast Packet Replication
39
Figure 3: Multicast Traffic Receipt Without Forwarding
39
Figure 4: Packet Flow Without Hardware Multicast Packet Replication
40
Figure 5: Packet Flow with Hardware Multicast Packet Replication
41
Supported Modules and Encapsulations
42
Hardware Multicast Packet Replication Considerations
43
Relationship with OIF Mapping
43
Configuring Hardware Multicast Packet Replication
44
Monitoring Hardware Multicast Packet Replication
46
IP and VLAN Statistics
46
Port Statistics
46
IGMP Statistics
47
Blocking and Limiting Multicast Traffic
47
Blocking Mroutes
47
Limiting Interface Admission Bandwidth
47
Enabling Interface Admission Bandwidth Limitation
48
OIF Interface Reevaluation Example
48
Creating Mroute Port Limits
49
Limiting Port Admission Bandwidth
49
Enabling Port Admission Bandwidth Control
49
OIF Port Reevaluation Example
50
Deleting Multicast Forwarding Entries
51
Monitoring IP Multicast Settings
51
Support for Multicast Router Information
60
BGP Multicasting
61
Investigating Multicast Routes
61
Chapter 2 Configuring IGMP
63
IGMP Overview
64
Group Membership Queries
64
Group Membership Reports
65
Leave Group Membership Messages
65
Platform Considerations
65
Configuring IGMP
65
References
66
Before You Begin
66
Configuring Static and Dynamic IGMP Interfaces
66
Configuring IGMP
67
Figure 6: Static and Dynamic IGMP Interfaces
67
Table 5: IGMP Commands
67
Enabling IGMP on an Interface
68
Configuring IGMP Settings for an Interface
69
Specifying Multicast Groups
72
Assigning a Multicast Group to an Interface
73
Configuring Group Outgoing Interface Mapping
73
Configuring Access Node Control Protocol for IGMP
74
Configuring SSM Mapping
74
Limiting the Number of Accepted IGMP Groups
75
Including and Excluding Traffic
77
Configuring Explicit Host Tracking
78
Accepting IGMP Reports from Remote Subnetworks
79
Disabling and Removing IGMP
80
Monitoring IGMP
81
IGMP Proxy Overview
91
Configuring IGMP Proxy
92
Figure 7: Upstream and Downstream Interfaces
92
Establishing the IGMP Proxy Baseline
94
Monitoring IGMP Proxy
94
Chapter 3 Configuring PIM for Ipv4 Multicast
99
Overview
100
PIM Dense Mode
100
Figure 8: Source-Rooted Tree
100
Figure 9: PIM Dense Mode Operation
101
Overriding Prunes
101
Preventing Duplication
101
PIM Sparse Mode
102
Figure 10: Detecting Duplication
102
Figure 11: PIM Sparse Mode Operation
103
Figure 12: Shared Tree Versus SPT
103
Joining Groups
104
Timers
104
PIM Sparse Mode Bootstrap Router
104
PIM Sparse-Dense Mode
105
PIM Source-Specific Multicast
105
Platform Considerations
106
References
106
Before You Begin
107
Enabling PIM on a VR
107
Disabling PIM on a VR
107
Enabling PIM on an Interface
108
Setting a Priority to Determine the Designated Router
108
Configuring the PIM Join/Prune Message Interval
109
Configuring an RP Router for PIM Sparse Mode and PIM Sparse-Dense Mode
110
Configuring a Static RP Router
110
Configuring an Auto-RP Router for PIM Sparse Mode
110
Configuring an Auto-RP Router for PIM Sparse-Dense Mode
110
Configuring BSR and RP Candidates for PIM Sparse Mode
112
Migrating to BSR from Auto-RP
113
Switching to an SPT for PIM Sparse Mode
114
Creating Multicast Vpns
114
Creating Multicast Vpns Using the Default MDT
114
Figure 13: Multicast Vpns
115
Multicast VPN Configuration Example
115
Creating Multicast Vpns Using the Data MDT
118
Data MDT Sources
118
Data MDT Receivers
119
Establishing a Data MDT Using ASM or SSM
119
Configuring the Default MDT
120
Configuring Data Mdts
121
Using PIM Sparse Mode Join Filters
125
Configuring PIM SSM
125
Configuring the BFD Protocol for PIM
126
Removing PIM
128
Resetting PIM Counters and Mappings
128
Monitoring PIM
129
Monitoring PIM Events
129
Monitoring PIM Settings
130
Chapter 4 Configuring DVMRP
143
Overview
144
Identifying Neighbors
144
Advertising Routes
144
Platform Considerations
145
Configuring DVMRP
145
Table 6: Sample Routing Table for a DVMRP Router
145
Table 7: Sample DVMRP (S,G) Pair Table
145
References
146
Before You Begin
146
Enabling DVMRP on a VR
146
Activating DVMRP on an Interface
146
Configuring DVMRP Limits
147
Filtering DVMRP Reports
148
Configuring DVMRP Summary Addresses
148
Changing the Metric for a Route
149
Importing Routes from Other Protocols
150
Specifying Routes to be Advertised
151
Preventing Dynamic Route Distribution
151
Exchanging DVMRP Unicast Routes
152
Disabling and Removing DVMRP
152
Clearing DVMRP Routes
153
Configuring DVMRP Tunnels
154
Monitoring DVMRP
154
Chapter 5 Configuring Ipv6 Multicast
161
Internet Protocol Version 6
161
Configuring PIM for Ipv6 Multicast
161
Configuring Ipv6 Multicast
163
Ipv6 Multicast Overview
163
Reverse-Path Forwarding
164
Table 8: Function of Multicast Protocols on a Router
164
Multicast Packet Forwarding
165
Platform Considerations
165
References
165
Configuring Ipv6 Multicast
165
Before You Begin
166
Configuring the Switching Fabric Bandwidth
166
Enabling Ipv6 Multicast
166
Defining Static Routes for Reverse-Path Forwarding
166
Displaying Available Routes for Reverse-Path Forwarding
167
Enabling and Disabling RPF Checks
168
Using Unicast Routes for RPF
169
Defining Permanent Ipv6 Multicast Forwarding Entries
169
Defining a Multicast Bandwidth Map
170
Using the Auto-Sense Mechanism
170
How Adaptive Mode Works
171
Figure 14: Example of Adaptive Ipv6 Multicast Bandwidth Detection
171
Table 9: Adaptive Mode Algorithm Values
172
Multicast Bandwidth Map Example
173
Configuring Multicast Qos Adjustment
173
Multicast OIF Mapping Case
174
Figure 15: Multicast OIF Mapping
174
Multicast Traffic Receipt Without Forwarding
175
Activating Multicast Qos Adjustment Functions
175
Figure 16: Multicast Traffic Receipt Without Forwarding
175
Configuring Hardware Multicast Packet Replication
176
Figure 17: Packet Flow Without Hardware Multicast Packet Replication
177
Figure 18: Packet Flow with Optimized Multicast Packet Replication
178
Relationship with OIF Mapping
179
Supported Modules and Encapsulations
179
Hardware Multicast Packet Replication Considerations
180
Configuring Hardware Multicast Packet Replication
181
Blocking and Limiting Multicast Traffic
183
Blocking Mroutes
184
Enabling Interface Admission Bandwidth Limitation
184
Limiting Interface Admission Bandwidth
184
Creating Mroute Port Limits
185
OIF Interface Reevaluation Example
185
Enabling Port Admission Bandwidth Control
186
Limiting Port Admission Bandwidth
186
OIF Port Reevaluation Example
187
Monitoring Optimized Multicast Packet Replication
183
IP and VLAN Statistics
183
MLD Statistics
183
Port Statistics
183
Deleting Multicast Forwarding Entries
187
Monitoring Ipv6 Multicast Settings
188
BGP Multicast
196
Chapter 6 Configuring Multicast Listener Discovery
197
Overview
198
Multicast Listener Queries
198
Multicast Listener Reports
199
Multicast Listener Done Messages
199
Platform Considerations
199
Configuring Multicast Listener Discovery
199
References
200
Before You Begin
200
Configuring Static and Dynamic MLD Interfaces
200
Figure 19: Static and Dynamic MLD Interfaces
200
Enabling MLD on an Interface
201
Configuring Multicast Listener Discovery
201
Table 10: Static MLD Commands
201
Configuring MLD Settings for an Interface
202
Specifying Multicast Groups
205
Assigning a Multicast Group to an Interface
206
Configuring Group Outgoing Interface Mapping
206
Configuring SSM Mapping
207
Limiting the Number of Accepted MLD Groups
208
Including and Excluding Traffic
209
Configuring Explicit Host Tracking
210
Disabling and Removing MLD
212
Monitoring MLD
212
MLD Proxy Overview
222
Configuring MLD Proxy
223
Figure 20: Upstream and Downstream Interfaces
223
Setting the MLD Proxy Baseline
224
Monitoring MLD Proxy
225
Chapter 7 Configuring PIM for Ipv6 Multicast
229
Overview
229
PIM Sparse Mode
230
Figure 21: Source-Rooted Tree
230
Joining Groups
230
Timers
230
PIM Sparse Mode Bootstrap Router
231
PIM Source-Specific Multicast
231
Platform Considerations
232
References
232
Before You Begin
233
Enabling and Disabling PIM on a VR
233
Enabling PIM on an Interface
234
Setting a Priority to Determine the Designated Router
234
Configuring the PIM Join/Prune Message Interval
235
Configuring an RP Router for PIM Sparse Mode
235
Configuring BSR and RP Candidates for PIM Sparse Mode
236
Switching to an SPT for PIM Sparse Mode
238
Configuring PIM Sparse Mode Remote Neighbors
238
Using PIM Sparse Mode Join Filters
240
Configuring PIM SSM
241
Figure 22: Network on Which to Configure PIM SSM
241
Configuring the BFD Protocol for PIM
242
Removing PIM
243
Resetting PIM Counters and Mappings
244
Monitoring PIM
244
Monitoring PIM Events
244
Monitoring PIM Settings
245
Index
255
Index
257
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