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Here is the translation of Yao Yang's Email…
Sorry, I did not learn English, had to use the Chinese reply.
"The Bridge" is the second floor, which is the data link layer (MAC) device,Broadcom patent in the name of the CMC, meaning "Coaxial Media Converter -the conversion of the physical layer. My mail is actually raised questions about the purely physical layer conversion. But we hope that the MAC layer is notdivided into two sections - light and power for some, that is, do not want them abridge device. In China, EoC was originally named "Cable Bridge", the short board is not end to end. We believe that the solution to the problem is one of theexpansion of EPON the MPCP protocol, called does not matter what the CMC(or the OCU, or the ECB) to change the frame format, and perhaps increase the number of predicted frames, while forwarding data storage, but keep the OLTcontrol of the CNU, management, scheduling. And here is my response…
Yao Yang,
I think we are in agreement. He OLT should control both the ONU and the CNU. And, the converter, or OCU, should not bridge
two different MACs. Instead, the CNU should provide a PHY-layer translation. Please let me know if this is what you are in favor of.
Thanks!
Jorge
姚洋，
我覺得我們是一致的。他OLT的控制ONU和本校。和轉換器，或OCU的，不應該縮小兩個不同的MAC。相反，本校應提供PHY層的翻譯。請讓我知道如果這是你贊成。 謝謝！ 豪爾赫 ---------
Jorge D. Salinger
VP, Access Architecture
Technology & Prod Development
Comcast Cable Communications
Comcast Center
1717 Arch Street – 43rd Floor
Philadelphia, PA 19103
Tel: +1 (215) 286-4122
Cell: +1 (215) 439-1721
From: 姚永 <yy0412@xxxxxxxxx>
Reply-To: 姚永 <yy0412@xxxxxxxxx> Date: Sun, 4 Mar 2012 09:42:22 +0800 To: EPoC Study Group <STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx> Subject: [802.3_EPOC] 回复: Re: [802.3_EPOC] What is the problem with the EPoC converter, and what is the CLT? 抱歉，我没有学过英语，只好用中文答复。
“桥”应该是二层、也就是数据链路层（包括MAC）的设备，博通专利中的名称是CMC，意思是“Coaxial Media Converter”——物理层的转换。我的上一个邮件实际是对单纯物理层转换提出了疑问。但是我们希望MAC层不要分成两段——光和电各一段，也就是不希望当中有个桥接设备。在中国，EoC最初就是以“缆桥”命名的，其短板就是不能端到端。我们认为，解决的方案之一就是扩展EPON MPCP协议，在CMC（或者OCU、或者ECB，叫什么不重要）变换一下帧格式，也许还要增加一些预测帧，同时对数据存储转发，但是保持OLT对CNU的控制、管理、调度。
2012-03-04
姚永
发件人：Geoff Thompson
发送时间：2012-03-04 08:09
主题：Re: [802.3_EPOC] What is the problem with the EPoC converter, and what is the CLT?
收件人：STDS-802-3-EPOC
抄送：
David-
As I discussed in my earlier message, your statement below: ‘Bridge’ is actually the more generic term. In IEEE 802, a "bridge" is not a generic term. Rather, it is a specific type of device whose configuration in standardized in 802.1 Best regards, Geoff Thompson On 23//12 11:42 PM, Barr, David wrote:
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