Avaya Configuring IP Services Bedienungsanleitung Seite 287

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Configuring IP Multicasting
7-5
In Figure 7-1, for example, multicasting Router A has two neighbors, Router B
and Router C. Router A and Router B are connected directly — they both have
interfaces to Net 6. Router A and Router C communicate through a tunnel that
includes a unicast router.
Figure 7-1. Multicast Routers
At startup, a DVMRP multicasting router
1. Initializes its routing table with information on all of its local networks
2. Sends out a probe for all routes on each of its multicast interfaces (both
physical circuits and tunnels)
A
D
B
C
Unicast
Router
Multicast
Router
E
a1 a2
b1
b2
c1
c2
d1
d2
d3
e1
Multicast
Host
Multicast
Circuit
Tunnel
Net 1
a3
Net 3
c3
Net 8
Net 6
Net 2
b3
Net 4
Net 5
e2
Net 9
Key
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