
Configuring IP Multicasting and Multimedia Services
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How RSVP Works
A network host that wants to establish a dataflow with a specified QoS sends an
RSVP path message addressed to a potential receiving host or group of hosts. In
F
igure 7-1, for example, a host sends a multicast RSVP path message to a group
of four hosts. Routers in the network receive the multicast RSVP messages and
forward them to the next-hop router until the messages reach their host
destinations. The sequence of networks and routers that a path message traverses
from source to destination establishes the path for the proposed dataflow.
Figure 7-1. RSVP Path Message
IP00057A
Sender
Receiver
Receiver
Receiver
Receiver
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