IEEE Std 802.3cm-2020 pdf download – IEEE Standard for Ethernet Amendment 7: Physical Layer and Management Parameters for 400 Gb/s over Multimode Fiber

02-23-2022 comment

IEEE Std 802.3cm-2020 pdf download – IEEE Standard for Ethernet Amendment 7: Physical Layer and Management Parameters for 400 Gb/s over Multimode Fiber
1. Introduction 1.3 Normative references Insert the following two references in alphanumeric order: ANSI/TIA-604-18-A:2018, FOCIS 18- Fiber Optic Connector Intermateability Standard- -Type MPO-16.2 IEC 61754-7-2:2017, Fibre optic interconnecting devices and passive components- -Fibre optic connector interfaces- Part 7-2: Type MPO connector family- Two fibre rows. 1.4 Definitions Insert two new definitions ufter 1.4.110“400GBASE-SR16”as follows: 1.4.110a 400GBASE-SR4.2: IEEE 802.3 Physical Layer specification for 400 Gb/s using 400GBASE-R encoding over eight lanes on multimode fiber in a bidirectional WDM format, with reach up to at least 150 m. (See IEEE Std 802.3, Clause 150.) 1.4.110b 400GBASE-SR8: IEEE 802.3 Physical Layer specification for 400 Gb/s using 400GBASE-R encoding over eight lanes of multimode fiber, with reach up to at least 100 m. (See IEEE Std 802.3, Clause 138.)
Change the third, fourth, and fifth paragraphs of 138. 1 as follows: Figure 138-1 shows the relationship of the PMDs and MDIs (shown shaded) with other sublayers to the ISO/IEC Open System Interconnection (OSI) reference model. 50 Gigabit Ethernet is introduced in Clause 131 and the purpose of each PHY sublayer is summarized in 131.2. 100 Gigabit Ethernet is introduced in Clause 80 and the purpose of each PHY sublayer is summarized in 80.2. 200 Gigabit Ethernet and 400 Gigabit Ethernet areis introduced in Clause 116 and the purpose of each PHY sublayer is summarized in 116.2. 50GBASE-SR,100GBASE-SR2, and -200GBASE-SR4 and 400GBASE-SR8 PHYs with the optional Energy-Efficient Ethernet (EEE) fast wake capability may enter the Low Power Idle (LPI) mode to conserve energy during periods of low link utilization (see Clause 78). The deep sleep mode of EEE is not supported. Further relevant information may be found in Clause 1 (terminology and conventions, references, definitions and abbreviations) and Annex A (bibliography, referenced as [B1], [B2], etc.). The 50GBASE-SR, 100GBASE-SR2. and 200GBASE-SR4. and 400GBASE-SR8 sublayers provide point-to-point 50, 100, and 200, and 400 Gigabit Ethernet links over one, two, or four, or eight pairs of multimode fiber, up to at least 100 m.

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