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End-to-End Service Provisioning in Carrier-Grade Ethernet Networks: The 100 GET-E3 Approach

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Microsoft Word - ONDM2008-Feb.22_final 1 Abstract— This paper presents and discusses issues of mul- ti-domain, end-to-end service provisioning in Ethernet core networks from the perspective of the 100GET-E3 project, a German subproject under the umbrella of the CELTIC research initiative 100GET ("100 Gigabit Ethernet Technologies"). We propose several multi-domain service provisioning scenarios in IEEE’s Provider Backbone Bridging Traffic Engineering (PBB-TE) networks. I. INTRODUCTION Today, 95% of all Internet data traffic either originates or terminates as Ethernet [1]. Ethernet technologies have been commercialized and deployed widely due to their merits of simplicity, ubiquity, interoperability, as well as cost-effectiveness. Recently, efforts have started to extend the reach of Ethernet from LAN to WAN, on the one hand, to replace a good portion of SDH/SONET interfaces, while on the other hand to offload core IP routers and allow for high-bit rate traffic to be switched below OSI Layer 3. This has become an attractive proposition for many carriers, not only due to the Ethernet’s intrinsic cost-effectiveness, but also due to its technological maturity to run at data rates of up to 10Gb/s and even 100 Gb/s in future. While the Internet will continue to serve as pre-dominant source of content and applications, car- rier grade Ethernet is becoming one of the most promising technologies for future transport networks. Standardization bodies and organizations have worked on the enhancement of original Ethernet to facilitate realization of carrier-grade Ethernet. Efforts are under way to develop higher speed Ethernet interface standards (IEEE 802.3ba) [2] and define Ethernet services with required Quality of Service (QoS), as well as service reliability and security [3, 4]. More- over, OAM for Ethernet in the first mile was defined by IEEE (802.3ah)[5], while the so-called Connectivity Fault Manage- ment and Protection Switching were specified to check

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