Re: [802.3_400G] Breakout Functionality Objective

[Brad Booth <bbooth@xxxxxxxx>]

Paul,

No disagreement that breakout will be useful in the data center. We use it today. 

We didn't have the objective for the 40G efforts, yet we now have the capability. Obviously an objective was not required. The industry provided the "appropriate support" and IMHO will do so again. 

Thanks,

Brad

On Thursday, October 17, 2013, Kolesar, Paul wrote:

Brad,

There has been no suggestion that the break-out objective be an absolute requirement.  All have language like “as appropriate” or “if appropriate”.   

 

I personally think break-out capability makes a lot of sense for solutions aimed at connectivity within data centers.  In contrast, so far I have not seen arguments supporting break-out functionality in the longer-reach applications. 

 

Paul

 

From: Brad Booth [mailto:bbooth@xxxxxxxx]
Sent: Thursday, October 17, 2013 8:35 AM
To: STDS-802-3-400G@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_400G] Breakout Functinoality Objective

 

Jonathan,

 

Thank you for the summation of my concern. 

 

The selection of a PHY will be based on its ability to meet the objectives. For example, if there are two PHY/PMD proposals where #1 provides a significant cost and implementation benefit but #2 provides breakout capability, then this objective could be used to defeat #1 in favor of #2.

 

Maybe the question the study group needs to answer is: Is breakout a critical requirement for 400G that we wish to exclude proposals that do not support it?

 

Thanks,

Brad

On Wednesday, October 16, 2013, Jonathan King wrote:

‘Provide support if appropriate for breakout functionality to 40G and / or 100G’

 

To avoid locking out an otherwise compelling technology option….

 

From: John D'Ambrosia [mailto:John_DAmbrosia@xxxxxxxx]
Sent: Wednesday, October 16, 2013 6:15 AM
To: STDS-802-3-400G@xxxxxxxxxxxxxxxxx
Subject: [802.3_400G] Breakout Functinoality Objective

 

All,

Per our call last week, what are the thoughts on the wording of this as a proposed objective –

 

Provide appropriate support for breakout functionality to 40G and / or 100G

 

There was some concern about potential impact or unintended consequences that people wanted to see this wording to discuss further.

 

Regards,

 

John