100GbE_Overview_white_paper(8)

100GE以太网技术介绍

In May 2009, Ixia demonstrated the world’s first 100 Gb/s test module with a CFP interface.

6 Support a MAC data rate of 40 Gbps, with physical layer specifications that support opera-tion over: At least 10 km on single-mode fiber (SMF) fiber At least 100 m on OM3 multi-mode (MMF) fiber At least 10 m over a copper cable assemblies At least 1 m over a backplaneIn June 2008, at the NXTcomm’08 trade show, Ixia demonstrated the operation and testing of a 100 Gbps link based on the current state of their standardization efforts. In October 2008, Ixia unveiled a 100 Gbps Development Accelerator System for sale and demonstrated a 40 Gbps proof-of-concept system. In May 2009, Ixia demonstrated the world’s first 100 Gbps test module with a CFP interface.Higher.Speed.TechnologyUse.of.Existing.FiberOne of the task force’s recommendations was to use existing fiber connectors. In particular, the most common fiber cable types should be accommodated: 100 m multi-mode fiber (MMF) using a 850 nm wavelength, 10 km single-mode fiber (SMF) using 1310 and 1550 wavelengths, and 40 km single-mode fiber (SMF) using 1310 and 1550 wavelengths Advances in wavelength-division multiplexing (WDM) and dense-WDM (DWDM) enabled the use of multiple simultaneous wavelengths on individual fibers, each capable of 10 Gbps traffic. Today’s optical transport networks uses DWDM to implement ITU-T recommendation G.709, which defines ODU4 for use with 100 Gbps and ODU3 with 40 Gbps. Work is progressing toward higher bandwidth per wavelength and fiber. Industry pundits see near-term bundles of various combinations that will handle 100 Gbps information flows, including: 10 wavelengths of 10 Gbps 4 wavelengths of 25 Gbps 5 wavelengths of 20 GbpsNot.reinventing.the.wheelThe 802.3ba task force’s guidelines include leaving the majority of 802.3 standards in place. Figure 4 is a typical Ethernet architecture as it applies to 40 and 100 Gbps.

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