A. Fei, J.-H. Cui, M. Gerla, and M. Faloutsos. Aggregated Multicast: an approach to reduce multicast state. Proceedings of Sixth Global Internet Symposium(GI2001.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....since there are potentially enormous multicast groups crossing backbone domains. To improve the state scalability of multicast in backbone domains, in this paper, we propose a scalable protocol, called BEAM (Bi dirEctional Aggregated Multicast) which uses the concept of aggregated multicast [9]. BEAM is a distributed protocol using bi directional trees. It is simple and easy to implement. Through simulations, we show that BEAM can greatly improve state scalability with very low overhead: up to 98 state and tree setup and maintenance overhead reduction with less than 0.14 bandwidth ....

....since there are potentially enormous multicast groups crossing backbone domains. To improve the state scalability of multicast in backbone domains, in this paper, we propose a scalable protocol, called BEAM (Bi dirEctional Aggregated Multicast) which uses the concept of aggregated multicast [9]. BEAM is a distributed protocol using bi directional trees. It is simple and easy to implement. Through simulations, we show that BEAM can greatly improve state scalability with very low overhead: up to 98 state and tree setup and maintenance overhead reduction with less than 0.14 bandwidth ....

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A. Fei, J.-H. Cui, M. Gerla, and M. Faloutsos. Aggregated Multicast: an approach to reduce multicast state. Proceedings of Sixth Global Internet Symposium(GI2001.

....since not only the forwarding state but also the resource requirement of a multicast group must be kept at the router. To provide scalable QoS multicast support, in this paper, we propose a novel architecture, called Aggregated QoS Multicast (AQoSM) Using the concept of aggregated multicast [7], AQoSM can support QoS multicast scalably and efficiently in Diff Serv Supported MPLS networks. In this paper, we develop the framework for the architecture and provide a feasibility check from an implementation point of view. The architecture is flexible and can be customized to the needs and ....

....architecture, called Aggregated QoS This material is based upon work supported by the National Science Foundation under Grant No. 9805436 and CAREER Grant No. 9985195, and CISCO CORE fund No. 99 10060. Multicast (AQoSM) which is designed based on the aggregated multicast scheme developed in [7]. Using the concept of aggregated multicast, AQoSM can support QoS multicast scalably and efficiently in Diff Serv Supported MPLS networks. QoS multicast provisioning is a multifaceted problem, involving routing, admission control, resource management and many other issues. In this paper, we ....

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A. Fei, J.-H. Cui, M. Gerla, and M. Faloutsos. Aggregated Multicast: an approach to reduce multicast state. Proceedings of Sixth Global Internet Symposium(GI2001.

....aggregation is very complex. In addition, it is still an open question how much aggregation can be achieved or whether this approach is applicable in real systems. To improve IP multicast state scalability, we have proposed a scheme to reduce multicast state, which we call aggregated multicast [6]. In this scheme, multiple multicast groups are forced to share one distribution tree, which we call an aggregated tree. In aggregated multicast, core routers need to keep state only per aggregated tree instead of per group. This can significantly reduce the total number of trees in the network ....

....reduce forwarding state. The trade off is that this approach may waste extra bandwidth to deliver multicast data to non group member nodes. Clearly, aggregated multicast applies to different multicast service models which employ a tree delivery structure, such as ASM and SSM. In our earlier work [6, 7], we introduced the basic concept of aggregated multicast, and gave an analysis of the trade off between aggregation and bandwidth waste in general. In this paper, we propose a protocol to improve the state scalability of Source Specific Multicast using the idea of aggregated multicast, which we ....

[Article contains additional citation context not shown here]

A. Fei, J.-H. Cui, M. Gerla, and M. Faloutsos. Aggregated Multicast: an approach to reduce multicast state. Proceedings of Sixth Global Internet Symposium(GI2001.

....may be significantly reduced. Consequently, forwarding state is also reduced: core routers only need to keep state per aggregated tree instead of per group. The trade off is that this approach may waste extra bandwidth to deliver multicast data to non group member nodes. In our earlier work [7, 8], we introduced the basic concept of aggregated multicast, proposed an algorithm to assign multicast groups to delivery trees with controllable bandwidth overhead and presented some initial results to show that multicast state can be reduced through inter group tree sharing. However, a thorough ....

....C1 B1 A4 A1 A3 A2 Ab Aa Domain E Domain Y Domain C Domain X Tunnel Fig. 2. Domain peering and a cross domain multicast tree, tree nodes: D1, A1, Aa, Ab, A2, B1, A3, C1, covering group G 0 (D1, B1, C1) III. AGGREGATED MULTICAST A. Concept of Aggregated Multicast Aggregated multicast [7, 8] is proposed to reduce multicast state, and it is targeted to intradomain multicast provisioning. The key idea is that, instead of constructing a tree for each individual multicast group in the core network (backbone) multiple multicast groups are forced to share a single aggregated tree. Fig. 2 ....

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Aiguo Fei, Jun-Hong Cui, Mario Gerla, and Michalis Faloutsos. Aggregated multicast: an approach to reduce multicast state. In the proceedings of Sixth Global Internet Symposium(GI2001.

....these works attempt to aggregate routing state after this has been allocated to groups. It is still an open question how much aggregation can be achieved or whether this approach is applicable at all in real systems. Previously we proposed and evaluated a novel scheme called aggregated multicast[12] to reduce multicast state. One main difference compared with the other approaches is that, in aggregated multicast multiple groups are forced to share one distribution tree, which we call an aggregated tree. This way the total number of trees in the network may be significantly reduced and so is ....

....simplify traffic management and facilitate QoS provisioning for multicast: 1) push per group multicast state to network edges and reduce multicast state in the network core; 2) pre assign resource bandwidth (or reserve on demand) only for a small number of aggregated trees. In our previous work[12, 11], we discussed the feasibility of aggregated multicast and evaluated the aggregation bandwidth trade off using simulation. In this report, we present an architecture, called aggregated QoS multicast (AQM) for scalable QoS multicast provisioning. In AQM, we examine how we can use aggregated ....

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Aiguo Fei, Jun-Hong Cui, Mario Gerla, and Michalis Faloutsos. Aggregated multicast: an approach to reduce multicast state. To appear in Sixth Global Internet Symposium(GI2001.

....instead This material is based upon work supported by the National Science Foundation under Grant No. 9805436, and CISCO CORE fund No. 99 10060 of per group. The trade off is that this approach may waste extra bandwidth to deliver multicast data to non group member nodes. In our earlier work [8, 9], we introduced the basic concept of aggregated multicast, proposed an algorithm to assign multicast groups to delivery trees with controllable bandwidth overhead and presented some initial results to show that multicast state can be reduced through inter group tree sharing. However, a thorough ....

....Domain B Domain A Customer networks, domain D E1 X1 D1 Y1 C1 B1 A4 A1 A3 A2 Ab Aa Domain E Domain Y Domain C Domain X Tunnel Fig. 2. Domain peering and a cross domain multicast tree, tree nodes: D1, A1, Aa, Ab, A2, B1, A3, C1, covering group G0 (D1, B1, C1) Aggregated multicast [8, 9] is proposed to reduce multicast state, and it is targeted to intra domain multicast provisioning. The key idea is that, instead of constructing a tree for each individual multicast group in the core network (backbone) multiple multicast groups are forced to share a single aggregated tree. Fig. ....

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Aiguo Fei, Jun-Hong Cui, Mario Gerla, and Michalis Faloutsos. Aggregated multicast: an approach to reduce multicast state. In the proceedings of Sixth Global Internet Symposium (GI2001), November 2001.

....aggregation is very complex. In addition, it is still an open question how much aggregation can be achieved or whether this approach is applicable in real systems. To improve IP multicast state scalability, we have proposed a scheme to reduce multicast states, which we call aggregated multicast [4, 5]. In this scheme, multiple multicast groups are forced to share one distribution tree, which we call an aggregated tree. In aggregated multicast, core routers need to keep state only per aggregated tree instead of per group. This can significantly reduce the total number of trees in the network ....

....reduce forwarding states. The trade off is that this approach may waste extra bandwidth to deliver multicast data to non group member nodes. Clearly, aggregated multicast applies to different multicast service models which employ a tree delivery structure, such as ASM and SSM. In our earlier work [4, 5], we introduced the basic concept of aggregated multicast, and gave an analysis of the trade off between aggregation and bandwidth waste in general. In this report, we propose a protocol to improve the state scalability of Source Specific Multicast using the idea of aggregated multicast, which we ....

[Article contains additional citation context not shown here]

A. Fei, J.-H. Cui, M. Gerla, and M. Faloutsos. Aggregated multicast: an approach to reduce multicast state. In the proceedings of Sixth Global Internet Symposium(GI2001.

....extra bandwidth to deliver multicast data to non group member nodes. Simulation results demonstrate that, the more bandwidth we sacrifice, the more state reduction we can achieve. The management policy and functional requirements can determine the right point in this trade off. In our earlier work [4], we introduced the basic concepts of aggregated multicast. In this paper, we propose an algorithm to assign multicast groups to delivery trees with controllable bandwidth overhead. We also propose a model to capture the membership patterns of multicast users, which can affect our ability to ....

Aiguo Fei, Jun-Hong Cui, Mario Gerla, and Michalis Faloutsos. Aggregated multicast: an approach to reduce multicast state. To appear in Sixth Global Internet Symposium(GI2001), November 2001.

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