High-speed Ethernet is a moving target. While 100 Gigabit Ethernet (GE) is still rolling out, 400GE is already nipping at its heels. In fact, IEEE802.3bs-compliant, with traffic line rates up to 400GE, was demoed for the first time at OFC 2017 in March, proving that higher-speed Ethernet is not waiting: The next generation of Ethernet speed is on its way.
400 Gigabit Ethernet is Here, But Who Benefits? | Light Reading