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Customizing ST2 Services

114064 Rev. A 5-5

Tunnels are conﬁgured by the network administrator to establish ST2 streams in

networks where not all IP routers are ST2 capable. For transmission through a

tunnel, SCMP messages and ST2 data are encapsulated in IP datagrams and

forwarded through a non-ST2 router, and decapsulated at the destination.

A non-ST2 router can provide a tunnel for both stream data and control messages;

however, a router that lacks ST2 capability cannot guarantee the resources listed

in the ﬂowspec.

Figure 5-2. ST2 Neighbors

ST2

agent

ST2

agent

ST2

agent

IP Router A

IP Router B

IP Router C

IP Router D

Direct neighbor connection

Tunneled neighbor connection

Net 1

Net 2

Net 3

ST20005A

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 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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