CS631 Paper Response Form
Paper Title: RSVP: A New Resource ReSerVation Protocol
Author(s): L. Zhang, S. Deering, D. Estrin, S. Shenker, D. Zappala
Main Point(s):
RSVP is a network resource reservation protocol that supports multimedia application requirements.
Its major design goals are 1. Accomodation of heterogeneous receivers, 2. Adaptation to changing multicast group membership, 3. Exploitation of different resource needs of applications, 4. Support of channel switching, 5. Adaptation of changing network routes, 6. Minimal control protocol overhead and 7. Modular design that is mostly independent of flow specification format and network protocol.
One main idea is that receivers and not the senders reserve resources, and to propagate this information in reverse direction along the sink tree. On intermediate nodes, the resource requests are
combined as far as possible, thereby reducing bandwidth requirements further up the sink tree. RSVP also allows to apply static and dynamic filters at intermediate nodes.
Possible Use(s):
Currently, the throughput of the net is already annoyingly low. With an increase of multimedia applications and ever-growing numbers of users, the net will only be useful if intelligent multicast and QOS protocols and reservation schemes can be developed.
Extensions:
The protocol is sometimes conservative, in that it allocates enough resources for the worst case.
Would it be possible to change the protocol so that it monitors how much of the resources are
actually used and 'conditionally' free them for the transportation of non-stream-like information
like mail messages. I don't know if standard resource reservation protocols do that already.
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