New Ethernet standard brings 5x speeds without cable change

(Image: Stockfresh)

28 September 2016

As expected the IEEE has ratified a new Ethernet specification — IEEE P802.3bz — that defines 2.5Gbase-T and 5Gbase-T, boosting the current top speed of traditional Ethernet five times without requiring the tearing out of current cabling.

The Ethernet Alliance wrote that the IEEE 802.3bz Standard for Ethernet Amendment sets Media Access Control Parameters, Physical Layers, and Management Parameters for 2.5Gbps and 5Gbps Operation lets access layer bandwidth evolve incrementally beyond 1Gbps, it will help address emerging needs in a variety of settings and applications, including enterprise, wireless networks.

Indeed, the wireless component may be the most significant implication of the standard as 2.5G and 5G Ethernet will allow connectivity to 802.11ac Wave 2 access points, considered by many to be the real driving force behind bringing up the speed of traditional NBase-T products.

“As new 802.11ac Wave 2 wireless technology is being deployed the need to offload more and more data at higher and higher speeds from the wireless to the wired network has never been so critical,” wrote Sachin Gupta, vice president of product management in a blog celebrating the ratification. “Going beyond 1 Gb/s with existing Cat5e and Cat6 cables was little more than a talking point two years ago. But now with Nbase-T, we have the ability to extend the life of an enormous asset — your wired network. The Cat5e and Cat6 installed in just the last 15 years now exceeds an estimated 70 billion meters of cabling, which is more than 10 trips to Pluto.”

Gupta added: “For some, a re-cabling isn’t even possible. For others, unfeasible. For the rest, re-cabling is just costly and disruptive. It is easy to imagine the value of delivering multi-gigabit speeds to the more than 1.3 billion Cat 5e/6 outlets worldwide if it doesn’t require the huge headache and expense of a major cable replacement. The promise of Nbase-T has to have nearly every CFO, CTO, building manager, and IT group breathing a huge sigh of relief.”

“The applications for Nbase-T solutions are vast and growing. Enterprise, small medium business, industrial, and home networks can take advantage of this technology to enable higher capacity wireless access points and faster downloads to client systems such as medical imaging systems that work with large data files, upgraded industrial and home networks,” the Nbase-T Alliance wrote of the ratification.

“Last quarter, Nbase-T switch and access point ports surged significantly as enterprises began to upgrade their campus networks to speeds beyond 1G,” said Alan Weckel, vice president of Ethernet switch market research at Dell’Oro Group. “There will be a sizable upgrade cycle around Nbase-T technology with robust growth expected over the next several years. As a result, we expect 2017 Nbase-T port shipments to exceed three million ports.”

Hand in hand with adoption of a low-speed Ethernet standard by the IEEE, proponents of the technology will hold an interoperability plugfest 10 October to tout the readiness of 2.5Gbase-T and 5Gbase-T products.



IDG News Service

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