Avaya Configuring IP Multicasting and Multimedia Services Manuel d'utilisateur Page 204
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Configuring IP Multicasting and Multimedia Services
A-34
303527-A Rev. 00
OSPF Interface Parameters
Parameter: Multicast Downstream IGMP Relay
Path: Configuration Manager > Protocols > IP > OSPF > Global
Default: Disabled
Options: Enabled
|
Disabled
Function: Specifies whether AS external routes are multicast capable. If you enable this
feature, the advertising ASBR sets the multicast bit in the ASE-LSAs for those
routes, so that they can be used for multicast purposes.
Instructions: By default, all external routes are multicast capable. However, if you know that
an ASBR’s external routes can be used for unicast only, you must set this
parameter to Disabled on the ASBR.
For example, consider two ASBRs -- ASBR1 and ASBR2 -- each with a BGP
connection to an ISP. You know that all multicast traffic should be injected into
the MOSPSF domain by ASBR2 because ASBR2 has a DVMRP tunnel to the
Mbone. To prevent ASBR1 from injecting multicast routes into the MOSPF
domain, you set this parameter to Disabled.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.3.1.30
Parameter: Multicast Forwarding
Path: Configuration Manager > Protocols > IP > OSPF > Interfaces
Default: Multicast
Options: Blocked
|
Multicast
|
Unicast
Function: Specifies the way multicasts should be forwarded on this interface: not
forwarded, forwarded as data link multicasts, or forwarded as data link
unicasts. Data link multicasting is not meaningful on point-to-point and
NBMA interfaces, and setting ospfMulticastForwarding to 0 effectively
disables all multicast forwarding.
Instructions: If you configured MOSPF globally, specify the way you want IP to forward
multicast packets on this interface.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.3.5.1.30
- 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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