Avaya Configuring IP Multicasting and Multimedia Services Instrukcja Użytkownika Pobierz pdf (Strona 123)

Configuring RSVP

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7-3

A network host that receives an RSVP path message decides whether it wants to

receive data on the proposed dataflow. If so, the host returns an RSVP reserve

message. In Figure 7-2

, for example, each host that has received an RSVP path

message returns a reserve message. Each router in the network:

1. Passes the reservation request to the local Circuit Resource Manager (CRM).

2. Forwards the reservation request to the previous hop in the flow (as

determined by the earlier path message).

In this manner, the reserve message traces the data path set up by the

corresponding path message and establishes resource reservation along the data

path at each router. Note that reservations from multiple receivers may be merged

on their way to the sender of the path message.

Figure 7-2. RSVP Reserve Message

IP00058A

ender

eceiver

Receiver

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