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I am in favor of an objective for break-out functionality. That said, the challenge of breaking out 40G interfaces from a system based on 25G electrical lanes does not appear trivial. Fortunately this is not the case for 100G break-outs. While the proposed objective language does not mandate 40G break-out, I am concerned that stating it as a possibility could become a distraction, consuming time and resources. Can someone state a case that supports keeping 40G in the proposed objective? Regards, Paul From: John D'Ambrosia [mailto:John_DAmbrosia@xxxxxxxx] Chris, There are a number of ways to enable breakout, which could be via the architecture itself. Also, note that there is no timing related to this. It might apply to a future PMD. And as Mike noted in his response, there is nothing in here that says all PMD variants have to support break out. John From: Chris Cole [mailto:chris.cole@xxxxxxxxxxx] John, Does this objective preclude a duplex SMF (pair) PMD, for example 8x50G or 4x100G WDM? Chris From: John D'Ambrosia [mailto:John_DAmbrosia@xxxxxxxx] 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 |