Light Reading

IEEE Picks Up 25Gbit/s Ethernet Cause

Dan O'Shea

Just days after a consortium was formed to pursue a 25Gbit/s specification for data centers, the IEEE has anointed its 802.3 25 Gbit/s Ethernet Study Group, the first step to establishing for formal standard.

Institute of Electrical and Electronics Engineers Inc. (IEEE) members voted last week to pursue the effort to explore uses and market interest in 25Gbit/s Ethernet for single-lane interconnections between servers and top-of-rack networking gear inside data centers. Mark Nowell, chairman of the study group and senior director at Cisco Systems Inc. (Nasdaq: CSCO), tells Light Reading an initial straw poll of voting engineers found 121 in favor and just one against the idea. The move to establish the study group was unanimously approved in a follow-up vote. (See IEEE Studies 25G Ethernet Standard.)

Only two weeks earlier, several companies came together to announce the 25 Gigabit Ethernet Consortium, which aimed to pursue a default standard in the absence of a formal IEEE standard, while also building enough broad industry support to get the IEEE to pursue a formal standard. A previous effort to start a 25Gbit/s standard process at an IEEE meeting in March did not advance, Nowell believes in part because that meeting was held in China and was not as heavily attended as the meeting this month in San Diego. (See Will 25G Effort Prove Valuable?, 25-GigE Consortium Devises Data Center Standard, and New 25-Gig Ethernet Spec Targets Data Center.)

The consortium effort and the IEEE study effort appear to be in alignment. Nowell says all of the founding members of the consortium backed the call for interest to form the study group. The consortium also has previously suggested it could feed its own spec, already completed, back into the standards process. Cisco notably was absent from the consortium's founding members, but Nowell says the network giant is in the process of joining the consortium.

Need to know more about network functions virtualization and the cloud? Check out the agenda for NFV and the Data Center, September 16 at the Santa Clara Marriott, Calif.

The IEEE standards process also can draw on details of the existing 100Gbit/s Ethernet standard, which include specifications for four lanes of 25 Gbit/s.

"Because we can use stuff hammered out in the 100G process, I would expect this effort to move quickly," Nowell says, adding that in previous standard efforts where existing specs could be leveraged, concepts have moved from study group to task-force development to standard in about 18 months.

For now, the study group is focused on examining the need for server interconnection at 25 Gbit/s using copper backplane interfaces, but Nowell says additional applications could evolve. "Once we have a MAC standard, it could proliferate into other areas of the data center where 10G is not enough and 40G is too much."

— Dan O'Shea, Managing Editor, Light Reading

(1)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
User Rank: Blogger
7/23/2014 | 6:07:22 PM
Two times the fun
The 25G consortium  also was developing a spec for two lanes of 25 Gbit/s for server interconnection, though the IEEE study group for now is looking at a single-lane solution.
From The Founder
The comms industry is rallying to the cause of open, independent interoperability testing.
Flash Poll
Live Streaming Video
CLOUD / MANAGED SERVICES: Prepping Ethernet for the Cloud
Moderator: Ray LeMaistre Panelists: Jeremy Bye, Leonard Sheahan
Telecom Innovators Video Showcase
Tail-f, Cisco & What the Future Holds

10|9|15   |   8:17   |   (0) comments

Steve Saunders meets with Tail-f's Director of Technology, Carl Moberg, in Stockholm to discuss becoming part of Cisco, ETSI MANO, virtualization and the need to combine science and business in order to create opportunities for service providers.
LRTV Interviews
Broadband Forum Embraces SDN & NFV

10|9|15   |   02:42   |   (0) comments

At Gigabit Europe 2015, Robin Mersh and Kevin Foster from the Broadband Forum explain how the industry body is adapting to meet the SDN, NFV and cloud needs of the access network sector.
LRTV Interviews
Top Tips for FTTH Operators

10|8|15   |   02:26   |   (0) comments

At Gigabit Europe 2015, Ventura Team co-founder Richard Jones talks about some of the key business case considerations for FTTH network operators.
LRTV Interviews
M-net Calls for FTTx Unity

10|8|15   |   03:45   |   (0) comments

At the Gigabit Europe event, Jörn Schoof from M-net, the Munich city network operator, calls for industry collaboration on fiber broadband access rollouts.
LRTV Documentaries
The Business Case Challenge for NFV

10|7|15   |   03:47   |   (0) comments

Virtual CPE is one of the early success stories for network functions virtualization, as service providers are finding flexible, programmable CPE solves a lot of logistics problems and reduces their cost. But even here, Masergy Communications faced a business case challenge, says CTO Tim Naramore.
LRTV Interviews
JT Offers Some Gigabit Lessons

10|7|15   |   4:08   |   (1) comment

Barna Kutvolgyi, managing director, Global Consumer, at JT, the incumbent operator on the island of Jersey, talks about how other service providers can learn from his company's gigabit broadband rollout experiences.
LRTV Interviews
AT&T's Chiosi on the Potential of Open Source

10|6|15   |   06:27   |   (0) comments

AT&T Distinguished Network Architect Margaret T. Chiosi talks to Light Reading's Carol Wilson about the potential for open source technology to liberate communications service providers.
LRTV Interviews
Network Security in a Gigabit World

10|6|15   |   05:52   |   (0) comments

Masergy's James Harrison talks about some of the network security and data center issues network operators need to consider as they expand their broadband services portfolios.
LRTV Documentaries
Telefónica: In Search of Virtual Simplicity

10|5|15   |   07:30   |   (0) comments

Francisco-Javier Ramon Salguero, head of Telefónica's NFV initiative, admits virtualization initially means greater complexity, but with the right abstraction layer, it is possible to create a services-driven network architecture. He explains how Telefónica's current trials and initiatives are aimed at doing that, and what his company and other carriers need to ...
LRTV Interviews
Gigabit Europe Takeaways

10|5|15   |   03:47   |   (0) comments

Participants from the inaugural Gigabit Europe event in Munich share their key takeaways from the conference.
Women in Comms Introduction Videos
Intel Urges Women to Take Advantage of Their Seat at the Table

10|5|15   |   4:27   |   (1) comment

Have inclusive and constructive conversations, attach a bigger meaning to your work and get involved in the cause, Intel's Monique Hayward advises women in comms.
LRTV Interviews
BT Updates on Plans

10|2|15   |   03:16   |   (2) comments

Peter Bell, CIO at Openreach, the access network division at UK incumbent BT, provides an update on the operator's trials and how Openreach is planning to deploy the broadband technology in its street cabinets.
Upcoming Live Events
October 14-15, 2015, New Orleans Ernest N. Morial Convention Center, New Orleans, LA
November 5, 2015, Hilton Santa Clara, Santa Clara, CA
November 17, 2015, Santa Clara, California
December 1, 2015, The Westin Times Square, New York City
December 2, 2015, The Westin Times Square, New York City
All Upcoming Live Events
Network appliances have a strong value proposition in today's networks and will continue to do so in the NFV and SDN-enabled networks of tomorrow.
Hot Topics
M&A Speculation Swirls Around Juniper
Ray Le Maistre, Editor-in-chief, 10/6/2015
Cisco's Chambers Rules Out Political Bid
Mitch Wagner, West Coast Bureau Chief, Light Reading, 10/6/2015
Cord Cutting? 'Fraid so.
Brett Sappington, 10/7/2015
Infinera Fleshes Out Its Metro 100G Story
Ray Le Maistre, Editor-in-chief, 10/7/2015
Cisco Makes 'Martian' Connection
Mitch Wagner, West Coast Bureau Chief, Light Reading, 10/9/2015
Like Us on Facebook
Twitter Feed
Webinar Archive
BETWEEN THE CEOs - Executive Interviews
With so many new and exciting communications technologies now under development, it's easy to get caught up in the industry's escalating hype cycle. That's why the ...
Last week saw a big day in the 15-year history of Light Reading when Editor-in-Chief Ray Le Maistre and I were invited to interview the Deputy Chairman and Rotating ...
Cats with Phones
"What?! I'm on with Finisar about their stock price tanking" Click Here