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Ciena, Infinera Push 100-GigE: Page 2 of 4

That interim step is all down to experience, "because 40 Gbit/s is something we, and others, have done a lot of research on," Mock says.

Meanwhile, 100-Gbit/s Ethernet is inching towards reality. Recently, the Institute of Electrical and Electronics Engineers Inc. (IEEE) 802.3 Higher Speed Study Group (HSSG) officially voted to make 100-Gbit/s Ethernet the subject of its standards work. (See 100-Gig Ethernet Gets Official Nod.)

Lucent Technologies Inc. (NYSE: LU) has put up a few papers on 100-Gbit/s transmission this year, though with work that's primarily at the optical layer and conducted at Bell Labs . (See Lucent Stretches 100-GigE.)

And earlier this month, in conjunction with the recent SC06 supercomputing conference, a group of vendors and carriers demonstrated 100-Gbit/s Ethernet traversing the live Level 3 Communications Inc. (Nasdaq: LVLT) network between Houston and Tampa, Fla. (See Group Demos Technology.)

Infinera is calling it the first real test of 100-Gbit/s Ethernet on a live network.