Abstract
Recent development in Ethernet technology drives the deployment of Ethernet from LANs to MANs. However, since Ethernet traffic will eventually be aggregated into SONET in WAN environment, an Ethernet-over-SONET (EoS) mapper designed to ease the transition becomes an important topic for service providers to create new revenues from their legacy SONET infrastructure. In this thesis, we investigate extensive design issues of an efficient EoS mapper. First, we revise header of link capacity adjustment scheme (LCAS) protocol to accelerate the speed of bandwidth adjustment. Second, we propose architecture with cross-connect functionality to raise flexibility of LCAS bandwidth allocation. Third, we refine virtual concatenation (VCAT) granularity by interleaving payload area of a virtual container-3 (VC-3) in order to further reduce bandwidth waste of transporting multiple groups of client signals. Finally, we devise a new transmission method that doesn’t disassemble an intact packet among diverse routes. Thus, large memory for differential delay compensation can be eliminated in the receiving end for UDP applications.