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In this paper we study dynamically changing multicast trees (light-trees) in double-layer optical networks. In this scenario, the continuous changing of multicast endpoints causes the degradation of the tree. Therefore a huge amount of network resources can be spared by regular reconfiguration. The benefit of reconfiguration is investigated for different routing algorithms and reconfiguration periods.
Ethernet protocol is the most wide-spread protocol in the local area network (LAN) environment. It is cost effective, simple, and provides high speeds, exactly what is needed in the provider network. However, deployment in the provider network imposes carrier-grade requirements. Standardization bodies realized this, and they are extending its capabilities: QoS support and traffic management by 802...
Triple Play requires cost-effective implementation of three services that are different in both traffic and QoS requirements. The methods applied for optimization of Ethernet trees must support not only point-to-point pipes but also point-to-multipoint connections for multicast and statistical multiplexing models for better resource allocation. In this paper we present a QoS architecture for Triple...
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