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The specification allows NEMs to optionally use a shortened codeword FEC variant -- RS (272, 257+1, 7, 10) that replaces the IEEE 802.3cd and 802.3bs standard FEC.
Targeted for massive aggregation of data across an array of applications, 400 Gigabit Ethernet (GbE) has completed the standardization process and was published in December 2017 by the IEEE 802.3bs Ethernet Working Group.
The Ethernet Alliance, a global consortium dedicated to the continued success and advancement of Ethernet technologies, today commended the IEEE 802.3 Ethernet Working Group on the approval of IEEE 802.3bs, Standard for Ethernet Amendment: Media Access Control Parameters, Physical Layers, and Management Parameters for 200 gigabit per second (Gb/s) and 400 Gb/s Operation.
"Networks are under increasing strain while expectations of uptime and speed are growing, and 400GbE technologies will quickly become a critical part of the network's backbone," said John D'Ambrosia, Ethernet Alliance Chairman of the Board of Directors, and IEEE 802.3bs task force chair.
This service covers the new IEEE 802.3bs and the new IEEE 802.3cd specification for 50, 100, 200 and 400 Gigabit Ethernet primarily focusing on the industry shift to PAM4, a new signaling scheme deemed necessary to address the growing need for more bandwidth while still realizing today's physical design realities.
The latest revisions of IEEE 802.3bs and OIF CEI-56G implementation agreements define PAM-4 and NRZ interfaces for electrical chip-to-chip, chip-to-module, backplane connection, and optical interfacing for up to 400-Gb/s bandwidth.
These multi-rate speed options allow network equipment manufacturers (NEMs) to test products at speeds based on the new IEEE 802.3cd draft standard and IEEE 802.3bs standard using the 400GE QSFP-DD module at 200GE, 100GE, and 50GE speeds, from a single port.
The 400G QSFP-DD is designed to be compliant with the IEEE 802.3bs 400GBASE- LR8/FR8 and QSFP-DD MSA specifications for links up to 10 km.
The demonstration is designed to showcase the Ethernet Alliance's IEEE 802.3bs 400 Gbps technology recently ratified in December 2017 and the OIF's FlexE 1.1 Implementation Agreement (IA).
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