Issue link: http://www.e-digitaleditions.com/i/1284149
October/November/December 2020 I 49 Ethernet Speeds Data Rate Gb/s Ethernet Standard Proprietary/MSA Module IEEE Standard/MSA/ # Fiber Pairs # λ 'S Optical Modulation Reach (m) OM3 OM4 OM5 100 100GBASE-SR4 Standard 4 1 25G NRZ 70 100 Same as OM4 100 100G – SWDM4 MSA 1 4 25G NRZ 75 100 150 100 100G – BiDi Proprietary 1 2 50G PAM4 70 100 150 400 400GBASE-SR16 Standard 16 1 25G NRZ 70 100 Same as OM4 50 50GBASE-SR 1 1 50G PAM4 70 100 100 100GBASE-SR2 2 1 50G PAM4 70 100 200 200GBASE-SR4 4 1 50G PAM4 70 100 400 400GBASE-SR8 Standard 8 1 50G PAM4 70 100 Same as OM4 400 400GBASE-SR4.2 4 2 150 100 100GBASE-SR IEEE 802.3 Study Group 1 1 100G PAM4 30? 50? Same as OM4 200 200GBASE-SR2 2 400 400GBASE-SR4 4 800 800GBASE-SR8 Future Technology 8 1 100G PAM4 50? 4/4/800/1600 4/800/1600GBASE-SRm.n. 1/2/4/8 TBD 100G PAM4 100M OVER MMF TABLE 1: Common high-speed Ethernet modules. Question marks=the supported link distance is still not determined. Also in 2018, a 400 Gb BiDi MSA was formed. Prod- ucts meeting this MSA are expected to also be compliant with the 400GBASE-SR4.2 standard. Refer to Table 1 for common Ethernet modules. Figure 2 shows The Ethernet Alliance's 2020 Ethernet Roadmap, 2 documenting the growth in Ethernet speeds to satisfy the market needs of the largest enterprise data center customers. On the storage side, Fibre Channel (FC) remains the dominant standard for enterprise networks. More than 90 percent of FC links utilize MMF and VCSELs. 3 The Dell'Oro Group 4 estimates that 113 million ports FIGURE 2: The Ethernet Alliance's 2020 Ethernet Roadmap. of FC switches and adapters have shipped since 2001 and that 46.2 million ports are still currently in operation with continued growth of FC links; 16 Gigabit Fibre Channel (GFC) is being deployed at a faster rate than 8 GFC, and 32 GFC is beginning to ramp up. 5 Link Speed (b/s) Ethernet Speed Ethernet Speed Possible Future Speed Standard Completed 10G 25G 50G 100G 200G 400G 1T 10T 2000 2010 2020 2030 Highly Parallel Speeds Quad Speeds Duo Speeds Serial Speeds The T11 Technical Committee of the InterNational Committee for Information Technology Stand- ards (INCITS) recently completed FC-PI-7 standard specifications for 64 GFC in small form-factor pluggable (SFP) modules. It is nearing completion of FC-PI-7P specifications for parallel or quad lane 256 GFC (4 x 64 GFC) and is currently developing FC-PI-8