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Customizing DVMRP

114064 Rev. A 4-3

Figure 4-1. Multicast Routers

At startup, a DVMRP multicasting router

1. Initializes its routing table with information on all of its local networks

2. Learns the existence of its neighbors by sending out a probe for all routes on

each of its multicast interfaces (both physical circuits and tunnels)

3. Receives reports from its neighbors containing the routing information

(including route costs)

Unicast

Router

Multicast

Router

Multicast

Host

Multicast

Circuit

Tunnel

Net 1

Net 3

Net 8

Net 6

Net 2

Net 4

Net 5

Net 9

Key

IP00031A

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 102 103

Conﬁguring IP 1
Multicasting Services 1
Bay Networks Software License 3
Contents 5
114064 Rev. A vii 7
114064 Rev. A ix 9
114064 Rev. A xi 11
About This Guide 13
Conventions 14
Acronyms 15
114064 Rev. A xvii 17
Bay Networks Customer Service 18
World Wide Web 19
Customer Service FTP 19
Support Source CD 20
CompuServe 20
InfoFACTS 21
How to Get Help 21
Chapter 1 23
Multicasting Overview 23
Multicast Addresses 24
Multicast Protocols 25
Chapter 2 27
Starting ST2 29
Chapter 5 30
Chapter 3 31
Customizing IGMP 31
IGMP Concepts and Terminology 32
Conﬁguring IGMP on the Router 33
Conﬁguring Logging 34
Enabling and Disabling IGMP 35
Specifying a Query Rate 35
3-6 114064 Rev. A 36
Chapter 4 39
Customizing DVMRP 39
Neighbor Connections 40
Figure 4-1. Multicast Routers 41
Source Route Advertisements 42
How DVMRP Chooses a Route 42
Shortest-Path Trees 44
Setting the Update Interval 45
Conﬁguring Tree Pruning 46
Conﬁguring DVMRP Timers 47
4-10 114064 Rev. A 48
Specifying a Probe Interval 49
Logging Debugging Messages 50
Specifying an MTU Size 50
Conﬁguring DVMRP on a Circuit 52
Specifying a Threshold 54
Conﬁguring a Forwarding Table 55
Conﬁguring a Tunnel 56
Specifying the Cost 57
Specifying a TTL 57
4-20 114064 Rev. A 58
Customizing ST2 Services 59
ST2 Concepts and Terminology 60
ST20001A 61
Stream Control Messages 62
Neighbors and Tunnels 62
Figure 5-2. ST2 Neighbors 63
(continued) 64
(continued) 65
5-8 114064 Rev. A 66
5-10 114064 Rev. A 68
ST20002A 69
Conﬁguring ST2 on the Router 70
Conﬁguring an ST2 Interface 71
5-14 114064 Rev. A 72
5-16 114064 Rev. A 74
Appendix A 75
A-2 114064 Rev. A 76
114064 Rev. A A-3 77
A-4 114064 Rev. A 78
79
A-6 114064 Rev. A 80
A-8 114064 Rev. A 82
83
114064 Rev. A A-11 85
A-12 114064 Rev. A 86
IGMP Parameters 87
88
A-16 114064 Rev. A 90
IP Conﬁguration Parameters 91
A-18 114064 Rev. A 92
ST2 Parameters 93
114064 Rev. A A-21 95
A-22 114064 Rev. A 96
114064 Rev. A A-23 97
99
A-26 114064 Rev. A 100
114064 Rev. A Index-1 101
114064 Rev. A 102
114064 Rev. A Index-3 103

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