Jan 07 , 2019
A standard for Ethernet network connectivity in a data center environment is 25G Ethernet or 25 Gigabit Ethernet. IEEE P802.3by is created by the Ethernet Task Force of 25 Gb/s. IEEE 802.3by utilizes technology identified as four 25 Gbps channels for 100 Gigabit Ethernet (IEEE 802.3bj).
25G Ethernet do provide a cheaper route to 50Gbps, 100Gbps and higher Ethernet rates. Network operators are no longer restricted to use a 40G QSFP port to go from one device to another in order to achieve 100G bandwidth.
25G Ethernet dates back to 2014. This is the year of the first submission of 25G. A wide range of vendors discussed their cost and efficiency during that time compared to 10G, 40G, and 100G. Google, Microsoft, Broadcom, Arista, Mellanox, and other well known data-center and cloud computing providers have formed a special research group, 25G Ethernet Consortium, to promote the standardization of 25G Ethernet.
In 2015, the first production of 25G products appeared on the market. Researchers conducted analyzes of 25G Ethernet from multiple elements, like demands in data centers, benefits, uses and questions from individuals who may be concerned.
Fast 25G growth occurred in 2016-2017 The significance of these two years for 25G Ethernet development is important. Over the years, the IEEE has approved the 802.3by 25G Ethernet specification and other major suppliers are eager to launch their own 25G products to meet the market trend.
Finisar launched 25G Ethernet optics for high-speed data centers with its SFP28 eSR transceiver allowing 300-meter connections to existing OM3 MMF and 25G SFPwire, and Active Optical Cable (AOC) that also offers real-time troubleshooting and performance monitoring.
25G was acknowledged for next-generation server access rates in 2017. There is an urgent need to finalize the related technical specifications such as 25G ToR switches and AOC wires, and worldwide organisations are working aggressively to take the action.
In 2018 25G products compete with other products. Sales of 10G commodities decreased over the year while more and more recognition was given to 25G products.
25G is currently used primarily for switch-to-server apps. And in some aspects it gets ground compared to 10G and 40G Ethernet. With a five-year forecast by industry analysts at the Dell'Oro Group, you can see clear trends in the 25G market.