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Configuring IP Multicasting and Multimedia Services
A-36
117355-C Rev 00
OSPF Interface Parameters
Parameter: Multicast Downstream IGMP Relay
Path: Configuration Manager > Protocols > IP > OSPF/MOSPF > 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/MOSPF > 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
- 117355-C 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
- 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 42
- Enabling Join Acknowledgments 43
- Accepting a Nonlocal Report 45
- Specifying a Query Rate 48
- Configuring IGMP Policies 56
- Chapter 4 59
- Neighbor Connections 60
- Figure 4-1. Multicast Routers 61
- Source Route Advertisements 62
- How DVMRP Chooses a Route 63
- Routing Table 64
- Shortest-Path Trees 65
- Tree Pruning 65
- Customizing DVMRP Globally 66
- Setting the Update Interval 68
- Setting the Leaf Timer 77
- Specifying a Probe Interval 79
- Logging Debugging Messages 85
- Listening for a Default Route 100
- Using the BCC 101
- Using Site Manager 102
- Configuring a Tunnel 104
- Specifying the Cost 110
- Specifying a Threshold 111
- Advertising a Default Route 114
- Configuring DVMRP Policies 120
- Customizing DVMRP 121
- (continued) 122
- Configuring an Accept Policy 124
- Table 4-5 127
- Chapter 5 131
- MOSPF Overview 132
- • All multicasting types 133
- Configuring MOSPF Globally 134
- Enabling Dynamic TTL 139
- Chapter 6 143
- Configuring QOSPF 143
- Figure 6-1. QOSPF Topology 144
- Enabling Route Pinning 146
- Chapter 7 149
- Configuring RSVP 149
- How RSVP Works 150
- Configuring RSVP Globally 152
- Choosing a Slot 153
- Caution: 154
- Setting the TTL Override 159
- Setting the Route Delay Value 160
- Chapter 8 163
- Reserving Line Resources 163
- Resource Manager 164
- Supported Media 165
- Chapter 9 179
- Configuring IGMP Relay 179
- IGMP Relay Overview 180
- IGMP Relay Topology 181
- How IGMP Relay Works 182
- Appendix A 203
- Site Manager Parameters 203
- DVMRP Parameters 204
- DVMRP Interface Parameters 209
- DVMRP Tunnel Parameters 214
- IGMP Parameters 218
- IGMP Static Host Parameters 223
- IP Configuration Parameters 227
- Resource Manager Parameters 229
- OSPF Global Parameters 235
- OSPF Interface Parameters 238
- RSVP Parameters 239
- RSVP Interface Parameters 240
- Multicast Policy Parameters 243
- IGMP Group Policy Parameters 257
- Appendix B 267
- Multicasting Tools 267
- <retry_count> 270
- <timeout_count> 270
- For example, the following 272
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