
RSVP: Resource Reservation Protocol ◾ 123
merged reservation request is forwarded as a single request to the next upstream
node. is helps increase the network’s efficiency.
Handling Non-RSVP Intermediate Networks
Naturally, it is possible to encounter somewhere in the wide area network a non-QoS
supporting network. How does the RSVP handle this? If there is an intermediate
network with routers that do not understand the RSVP, both the PATH/RESV mes-
sages are forwarded through the non-RSVP network because to it, they are just like
any other IP packets. Consider the network in Figure 6.10 with a non-QoS support-
ing Internet in the middle. e t