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John D’Ambrosia:以太网正在呈指数级增长!

2014年03月03日 12:15:56 | 作者:戴尔网络首席技术官办公室以太网传播总负责人 John D’Ambrosia | 来源:网界网

摘要:我很欣赏Metcalfe定律,该定律提出网络价值会与用户数量的平方成正比。这本来是针对电信领域的一个预测,但我认为这也完全适用于消费者之间联网的价值,尤其是对于IEEE 802网络来说。那么,在今年3月IEEE 802首次在北京召开全体...

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以太网
400G
指数级增长
IEEE 802
Metcalfe定律中英双语

以太网联盟主席、戴尔网络首席技术官办公室以太网传播总负责人 John D’Ambrosia

以太网刚刚度过40周年,并且其快速发展没有透出任何放慢的迹象。目前,IEEE 802.3以太网工作组正准备在3月IEEE 802 全体会议上请求将400 Gb/s以太网研究组批准成为正式工作组。400 Gb/s以太网研究组和IEEE 802.3一道已经开展8个研究项目,这些项目的范围涵盖从、数据中心如何走向400 Gb/s,也涵盖不同的铜介质和光学介质的以太网传输方式。上述各种标准可能对企业、数据中心、接入层、车载网络、电信运营商的客户端连接、网络接入等众多不同应用领域产生重大影响。

业界一直称我为致力于让以太网向更高速发展的推动者,然而以太网的快速发展甚至让一直强调高速率的我都感到吃惊。的确,以太网满足了不同应用领域的需求,而以太网对我来说最大的魅力在于,我看到覆盖了全球所有网络。我看到不同的市场都希望在其应用领域充分利用以太网。我很幸运,能在世界各地遇到众多志同道合的人士,他们对以太网的发展也非常感兴趣。2006年我负责在美国加州圣地亚哥征集10 GbE之后以太网下一阶段速率的研究意向征集(Call-For-Interests ,CFI),从这里开始,然后到中国北京,再到俄罗斯莫斯科、印度班加罗尔、日本东京、加拿大埃德蒙顿,我在全球各地都遇到了众多对以太网下一步发展非常感兴趣的人们。

由于以太网涉及各种不同应用领域,每个人对以太网都有不同的表述,要准确说明什么是以太网及其发展趋势如何,往往是一个巨大的挑战。不过正如我所说的,以太网并不局限于一个应用领域。在一次我跟Bob Metcalfe(以太网发明者)邮件往来中,Bob总结了他眼中的以太网――很简单、也很雅致:“以太网就是创新的代名词”。的确,结合开放标准特性以及实现可能、应用推广前景来看,以太网的价值、端口数量和带宽还将迅猛增长。

目前,我正在准备在3月IEEE 802全体会议上请求批准用于定义IEEE P802.3bs 400 Gb/s以太网项目的文档。此外,还有一些有意思的消息可以发布:

· IEEE 802.3以太网工作组将在如下三个方面进行研究意向征集 (CFI):

  ·单根双绞线上的100 Mb/s以太网传输(面向汽车和工业应用领域)

  ·塑料光纤上的千兆以太网传输(有关应用包括汽车和家庭网络)

  ·25 Gb以太网(面向超大规模数据中心)

我预计以太网解决方案还会进军其他应用领域,所以我参与的项目还包括:

· IEEE 802.11 Wireless LAN工作组将推动“高效无线局域网”(High Efficiency Wireless LAN)项目审批,该项目旨在推动未来高密度应用场景,并大幅提高实际吞吐量。

· IEEE 802.15工作组将推动“100 Gbps无线开关点对点的物理层”项目审批。今后无线会不会进入数据中心领域?

·将开会研讨“物联网”具体细节,并探讨IEEE 802标准能否适用于物联网应用领域。

所以,您会看到,这是非常令人激动的一周!如果您希望了解关于上述不同项目的更多信息,敬请参阅IEEE 802网页:http://www.ieee802.org/。如果您希望进一步了解即将召开的IEEE 802全体会议的更多信息,敬请访问:http://802world.org/plenary/。

我很欣赏Metcalfe定律,该定律提出网络价值将与用户数量的平方成正比。这本来是针对电信领域的一个预测,但我认为这也完全适用于消费者之间联网的价值,尤其是对于IEEE 802网络来说。那么,在今年3月IEEE 802首次在北京召开全体会议之际,就请尽情想象IEEE 802参与者推动的网络所带来价值的巨大潜力吧!

而在打造网络的同时,我们也期待着更多应用的到来!

 

附:英文原文

Ethernet’s Exponential Trajectory!

By John D’Ambrosia, Chief Ethernet Evangelist, Dell Networking CTO Office

Fresh off a year of 40th anniversary celebrations, Ethernet's expansive progression is showing no signs of letting up. Right now, the IEEE 802.3 Ethernet Working Group is working on 8 projects with the 400 Gb/s Ethernet Study Group preparing to request approval to become an official task force at the IEEE 802 March Plenary. The activities currently underway range from DC to 400 Gb/s, and cover the transmission of Ethernet across various copper and optical mediums. These standards are of potential interest to a myriad of different application areas, such as enterprise, data center, access, vehicular networking, client-side connections for service providers, access networks, and the list goes on.

Given my industry reputation as a guy who is always working on going faster, it might surprise you that all of these efforts fascinate me. Yes, they will address different application areas, but the beauty of Ethernet for me is when I step back, I see its presence throughout networks world-wide. I see different markets wishing to exploit Ethernet for their application space. And I have been fortunate to meet people from around the world, who are interested in Ethernet’s evolution. From San Diego, CA in the United States, where I led the Call-for-Interest in 2006 to start the next rate of Ethernet after 10GbE to Beijing, China to Moscow, Russia to Bangalore, India to Tokyo, Japan to Edmonton, Canada and everywhere in between, I have traveled the world and met people interested in where Ethernet is going.

And given all of these different application spaces and everyone claiming Ethernet-this and Ethernet-that, trying to exactly state what Ethernet is and where it is going, has often been a challenge, afterall, as I noted Ethernet is not constrained to one application space. During one email exchange with Bob Metcalfe, he summed up “What is Ethernet” to me in a few simple, yet elegant words, “Ethernet is a brand of innovation.” Combined with its open-standards nature, and the realization that if it is built, the applications will come, Ethernet’s exponential expansion in value, ports shipped, and bandwidth continue onward.

So while I am preparing to request the approval of the project documentation that will define the IEEE P802.3bs 400 Gb/s Ethernet project, there are a number of other interesting things that have been announced for the IEEE 802 March Plenary:

·There will be three Call-For-Interests (CFI) in the IEEE 802.3 Ethernet Working Group

  · 100 Mb/s Ethernet over a Single Twisted Pair (targeting automotive and industrial application spaces)

  · Gigabit Ethernet over Plastic Optical Fiber (example applications include automotive and home networking)

  · 25 Gigabit Ethernet (targeting hyper-scale data centers)

Other efforts that I am also following, as I can envision applications that are potentially synergistic with Ethernet-based solutions include:

·The IEEE 802.11 Wireless LAN Working Group will be seeking approval of its “High Efficiency Wireless LAN” project, which will seek to enable high density scenarios in the future and enable a substantial increase in real world throughput.

·The IEEE 802.15 Working Group will be seeking approval of its “100 Gbps Wireless Switched Point-to-Point Physical Layer” Project. Will wireless be coming to data centers in the future?

·There will be a meeting that will explore the “Nuts and Bolts of the Internet of Things” and discuuss how IEEE 802 standards might be applied to this application space.

So, as you can see, it will be a very exciting week! If you are interested in finding out more about these different projects, please feel free to check out the IEEE 802 webpage at http://www.ieee802.org/, and if you want more information on the upcoming IEEE 802 Plenary meeting, check out http://802world.org/plenary/.

I am fond of Metcalfe's Law, which essentially states that- the value of a network grows exponentially as a function of the square of the number of users. While this was intended to describe telecommunications networks, I think it is entirely appropriate to use it to describe the value of our own inter-personal networks, especially at IEEE 802. So as the IEEE 802 holds its first plenary in Beijing in March, imagine the potential for how the value of the IEEE 802 Network of participants will be soaring.

And, as we build out these networks, we wait for the applications to come!

[责任编辑:蒙克 meng_ke@cnw.com.cn]

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