ISO/IEC/IEEE 8802-3-2021/Amd 4-2021Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 4: Physical layers and management parameters for

ISO/IEC/IEEE 8802-3-2021/Amd 4-2021Telecommunications and exchange between information technology systems — Requirements for local and metropolitan area networks — Part 3: Standard for Ethernet — Amendment 4: Physical layers and management parameters for 50 Gb/s, 200 Gb/s, and 400 Gb/s operation over single‐mode fiber