Avaya Configuring IP Multicasting and Multimedia Services Manuel d'utilisateur Page 67
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Customizing DVMRP
303527-A Rev. 00
4-11
Configuring Tree Pruning
If no members are detected on a branch of the shortest path tree for a given group,
DVMRP prunes the branch.
The following conditions cause DVMRP to prune the shortest-path tree for a given
group:
• The router determines that the attached network on which the host is located
(or any other locally attached network) has no active member of the group.
• The router determines that all neighbors on all attached networks other than
the next-hop network to the source have pruned off the source and group.
• The router determines that it is not located on the shortest network path to any
remote network that includes a member of the group.
• The router sends a DVMRP prune message to its DVMRP neighbor. The
neighbor removes the router from its forwarding table.
If the host later rejoins the group, the router sends the neighbor a DVMRP
graft message. The neighbor restores the router to its forwarding table.
Tree pruning is enabled on the router by default. You can use Site Manager to
disable and reenable tree pruning on the router.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
IP
. The IP menu opens.
3. Choose
DVMRP
. The DVMRP menu opens.
4. Choose
Global
. The DVMRP Global Configuration
window opens.
5. Set the
Pruning Enable
parameter. Site
Manager: Pruning Enable parameter:
page A-6
6. Click on
Save
. You return to the Configuration Manager
window.
- Configuring IP 1
- Multicasting and 1
- Multimedia Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 303527-A Rev. 00 10
- Before You Begin 15
- Text Conventions 16
- Acronyms 17
- How to Get Help 19
- Chapter 1 21
- Multicast Host Groups 22
- Multicast Addresses 23
- Multicast Extensions to OSPF 24
- Resource Reservation Protocol 24
- Bay Networks Resource Manager 24
- IGMP Relay 25
- Multicast Table Manager 25
- Chapter 2 27
- Starting IGMP 28
- Starting DVMRP 29
- Starting MOSPF 30
- Starting RSVP 31
- Chapter 3 33
- IGMP Concepts and Terminology 34
- IGMP Host Reports 35
- Host Leave Messages 35
- Customizing Global IGMP 36
- Enabling and Disabling IGMP 37
- Configuring Logging 41
- Enabling Join Acknowledgments 42
- Accepting a Nonlocal Report 44
- Specifying a Query Rate 47
- Configuring IGMP Policies 55
- Chapter 4 57
- Neighbor Connections 58
- Figure 4-1. Multicast Routers 59
- Source Route Advertisements 60
- How DVMRP Chooses a Route 61
- Routing Table 62
- Shortest-Path Trees 63
- Customizing DVMRP Globally 64
- Setting the Update Interval 66
- Configuring Tree Pruning 67
- Configuring DVMRP Timers 68
- Specifying a Probe Interval 72
- Logging Debugging Messages 75
- Specifying a Threshold 81
- TTL value from 1 to 254 82
- Advertising a Default Route 86
- Listening for a Default Route 87
- Configuring a Tunnel 89
- Specifying the Cost 93
- Specifying a TTL 94
- Customizing DVMRP 101
- Chapter 5 103
- MOSPF Overview 104
- • All multicasting types 105
- Configuring MOSPF Globally 106
- Enabling Dynamic TTL 111
- Chapter 6 115
- Configuring QOSPF 115
- Figure 6-1. QOSPF Topology 116
- Enabling Route Pinning 118
- Chapter 7 121
- Configuring RSVP 121
- How RSVP Works 122
- Configuring RSVP Globally 124
- Choosing a Slot 125
- Caution: 126
- Setting the TTL Override 131
- Setting the Route Delay Value 132
- Chapter 8 135
- Reserving Line Resources 135
- Resource Manager 136
- Supported Media 137
- Chapter 9 151
- Configuring IGMP Relay 151
- Concepts and Terminology 152
- Using the BCC 157
- Using Site Manager 158
- Appendix A 171
- Site Manager Parameters 171
- DVMRP Parameters 172
- DVMRP Circuit Parameters 177
- DVMRP Tunnel Parameters 181
- IGMP Parameters 185
- IGMP Static Host Parameters 189
- IP Configuration Parameters 193
- Resource Manager Parameters 195
- OSPF Global Parameters 201
- OSPF Interface Parameters 204
- RSVP Parameters 205
- RSVP Interface Parameters 207
- Appendix B 223
- Multicasting Tools 223
- <source> 225
- <destination> 225
- <group> 225
- <retry_count> 226
- <timeout_count> 226
- For example, the following 228
- Index-10 232
- Index-11 233
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