High-speed Ethernet is taking center stage this week at the European Conference on Optical Communication in Rome where several vendors, including Arista, Cisco and Huawei, are showing off gear that will power large-enterprise and hyperscale networks.

The key demos come from the Ethernet Alliance and the 100G Lambda multi-source agreement (MSA) group, which are pushing technology advances needed to support 400G Ethernet, including new pulse amplitude modulation or PAM4 for electrical and optical interfaces, high-bandwidth switching silicon, and a new high-density pluggable connector system known as QSFP-DD.

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