Enhanced Cores Based Tree for Many-to-Many IP Multicasting
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In this paper, we propose a simple and practical scheme for many-to-many IP multicasting. The proposed scheme is based on the core based tree (CBT) protocol, and designed to enhance the CBT in terms of tree cost and traffic concentration. In the scheme, each group user is simply connected to the nearest core router in the network. Each core router forwards the source traffic to the network via the pre-configured backbone core tree spanning all the core routers in the network. To ensure that the backbone core tree keeps only the core routers with active group users, the core routers that have no downstream users are removed from the backbone core tree. The experimental results show that the proposed scheme significantly improves the existing CBT scheme in terms of tree cost and traffic concentration.
Abstract
In this paper, we propose a simple and practical scheme for many-to-many IP multicasting. The proposed scheme is based on the core based tree (CBT) protocol, and designed to enhance the CBT in terms of tree cost and traffic concentration. In the scheme, each group user is simply connected to the nearest core router in the network. Each core router forwards the source traffic to the network via the pre-configured backbone core tree spanning all the core routers in the network. To ensure that the backbone core tree keeps only the core routers with active group users, the core routers that have no downstream users are removed from the backbone core tree. The experimental results show that the proposed scheme significantly improves the existing CBT scheme in terms of tree cost and traffic concentration.