Re: [802.3_50G] 答复: [802.3_50G] CAUI-4 operatingmodes

[Brad Booth <bbooth@xxxxxxxx>]

Chris,

Thanks for the pointer to Rob's presentation.

I should probably highlight that when I hear the term "application space" that means "market" to me. It appears the term is being use as "deployment model" as in "how to apply that technology in that space."

Greenfield and brownfield have more to do with the deployment model; not the market. The study group needs to provide information about which market the technology is focused on to be able to answer the 5 Criteria. It is absolutely critical to put on our "marketing hats" (or find some in our companies that wear them) to make sure that the standards we're planning on creating truly are satisfying a market need. In other words, are end users really going to buy it?

For example, I believe that 50G is pretty straight-forward to justify its market. It's obvious that some folks have a tougher time with the 100G (2x50G) objectives. As an end user, I hope to provide some insight in Macau as to why I believe a 2x50G (100G) has a market, how it will be used and what the requirements are for its use. There is a lot of support for the 200G objectives, but what I haven't seen presented (and hope to see in Macau) is data that shows end user support for the technology and information that highlights what potential impact 200G may have on 400G's BMP. When we did the PAR and CSD for .3bs, the information provided in those documents was based upon only 100G being in the market. The introduction of 200G impacts the previous data we developed, and it needs to be addressed.

Thanks,

Brad

On Wed, Mar 2, 2016 at 9:53 AM, Chris Cole <chris.cole@xxxxxxxxxxx> wrote:

Hi Brad,

 

We tried to capture the details of the various applications in Rob’s presentation:

 

http://www.ieee802.org/3/50G/public/adhoc/archive/stone_021716_50GE_NGOATH_adhoc-v2.pdf

 

We will have an updated presentation in Macau.

 

More broadly, you raise a very important question which is the relevance of IEEE 802.3 broad market potential, economic feasibility, and distinct identity criteria to the realities of the market place today. The trend has been for exponential proliferation of optical PMDs and form factors. At 10G the industry consensus was that lowest cost is achieved by reaching agreement on a couple of solutions (SR and LR in SFP+) which everyone focused on developing and deploying, hence creating a broad market. For 100G and higher, the new industry approach to lowest cost is developing unique technology optimized to individual applications. MS nicely articulated this perspective in 802.3 by commenting that it will deploy whatever best solves its problems, independent of whether it’s standardized in the IEEE or not. Other Web 2.0 companies have similar approach. Since different end users have different requirements, the industry has responded by developing multitude of different solutions. Which raises the question whether there will even be such a thing as a broad market in the optics industry, and if not then it’s problematic to use it as a criteria for new standards.  

 

Chris

 

From: B Booth [mailto:bbooth@xxxxxxxx]
Sent: Tuesday, March 01, 2016 8:13 PM
To: STDS-802-3-50G@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_50G] 答复: [802.3_50G] CAUI-4 operatingmodes

 

If we're going to use titles like "Supported Applications" can we at least highlight what those applications are. Where in the network is that link intended to be used? What is the intended application space or market?

Otherwise, how do we evaluate broad market potential, economic feasibility, distinct identity, etc?

Thanks,
Brad

---

From: Wangxinyuan (Xinyuan)
Sent: ‎3/‎2/‎2016 4:23 AM
To: STDS-802-3-50G@xxxxxxxxxxxxxxxxx
Subject: [802.3_50G] 答复: [802.3_50G] CAUI-4 operatingmodes

Another option?

Just borrow from Chris table, with  “S3”.

Scenario	Supported	FEC Type	50Gb/s xAUI	100Gb/s xAUI	200Gb/s xAUI
	Applications
S3	Long-term	KP4 RS-544	LAUI LAUI-2	CAUI-2 CAUI-4?	CCAUI-4 CCAUI-8
	Near-term

 

 

发件人: Chris Cole [mailto:chris.cole@xxxxxxxxxxx]
发送时间: 2016年3月2日 6:48
收件人: STDS-802-3-50G@xxxxxxxxxxxxxxxxx
主题: Re: [802.3_50G] CAUI-4 operating modes

 

The 50/100/200G SG will be making a choice in Macau between two objective setting scenarios for 50, 100, 200Gb/s xAUI chip-to-module interfaces.

 

 

[The entire original message is not included.]

Scenario	Supported Applications	FEC Type	50Gb/s xAUI	100Gb/s xAUI	200Gb/s xAUI
S1	Backwards Compatibility	KR4 RS-528	LAUI LAUI-2	CAUI-2	N.A.
	Long-term Mainstream	KP4 RS-544	LAUI</