电路仿真的定义和实现.pptVIP

This Presentation Purpose This presentation is intended as an introduction and companion to both the MEF 3 and MEF 8 Specifications These are the two principal specifications relating to services that carry Circuit Emulation/TM traffic across Carrier Ethernet Audience It is intended for Product Marketing, Engineering staff of member companies, for members of other standards bodies, Enterprise networking staff, and service providers who Would like a quick overview of the specifications Plan to read the specifications in detail Other Documents Presentations of the other specifications and an overview of all specifications is available on the MEF web site Other materials such as white papers and case studies are also available MEF Specifications Overview MEF 3: CES Framework RequirementMEF 8: CES Implementation Agreement Industry’s first formal definition of CES standards over Ethernet A services description Types of TDM services offered over Metro Ethernet, PDH and SONET/SDH DS1E1, DS3/E3, OC-3/STM-1, OC-12/STM-4 A requirement document Comprehensive CES requirements for providing TDM services over Ethernet SLA service quality parameters as specified by the ITU for TDM services An implementation agreement for Ethernet Practical agreement as to how to implement the CES over Ethernet What is Circuit Emulation Service over Carrier Ethernet? Circuit Emulation Service “tunnels” TDM traffic through a Metro Ethernet network packet network “emulates” a circuit-switched network, re-creating the TDM circuit at the far end invisible to TDM source and destination equipment runs on a standard Ethernet Line Service (E-Line) MEF 3 TDM Circuit Emulation Support Traditional PDH/SONET/SDH hand-offs to existing customer voice equipment Allow Interworking onto Ethernet EVCS across the MEN. Circuit Emulation Services Relationship to the Metro Ethernet Network CES functions in relation to those specified by the MEF for the MEN Functions Defined TSP - Optional TDM mux/demux functio