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Ethernet is transforming from a LAN network solution into a technology which can be used within a carrier network. Ethernet is currently especially envisaged within the metro part of the network as a cost efficient replacement of ATM/FR and SDH. This step requires additional functionality built into the Ethernet technology in order to maintain operability and reliability of the network. Considering...
Last decades bridged Ethernet has been the de facto standard layer 2 technology for LAN environments. This is mainly because it is easy to deploy, it has low cost and is relatively robust. These attractive properties together with highly increasing PHY speeds result in several initiatives of research projects and standardization bodies to extend Ethernet such as to use the technology in carrier environments...
Ethernet is becoming the dominant aggregation technology for carrier transport networks; however, as it is a LAN technology, native bridged ethernet does not fulfill all the carrier requirements. One of the schemes proposed by the research community to make ethernet fulfill carrier requirements is ethernet VLAN-label switching (ELS). ELS allows the creation of label switched data paths using a 12-bit...
Multipoint Ethernet services and virtual private LAN services are an active field of both research and standardization today. A high degree of automation and reduced customer-provider interaction, together with efficient resource management schemes and a guaranteed QoS level are key requirements for these new services, which constitute challenging problems to service providers. Especially the integration...
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