Re: [CCAMP] ODUflex error in RFC7139 (3924)

Lou Berger <lberger@labn.net> Mon, 24 March 2014 00:50 UTC

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Date: Sun, 23 Mar 2014 20:50:42 -0400
From: Lou Berger <lberger@labn.net>
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To: Fred Gruman <fgruman@gmail.com>, Fatai Zhang <zhangfatai@huawei.com>
References: <20140321030515.3EF087FC387@rfc-editor.org> <0a6b01cf45dc$60228370$20678a50$@olddog.co.uk> <F82A4B6D50F9464B8EBA55651F541CF85CADA265@SZXEMA504-MBS.china.huawei.com> <E3FC9FA3-2FF3-451B-98AB-1E6DF9F8F876@gmail.com>
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Subject: Re: [CCAMP] ODUflex error in RFC7139 (3924)
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Fred,

On 3/23/2014 9:48 AM, Fred Gruman wrote:
> Hi Fatai,
>
> I believe there is an error in RFC 7139 regarding the ITU-T definitions regarding ODUflex(CBR) in Table 1.
>
> Table 1 lists the minimum, nominal and maximum values for the TS.  But the left column is wrong.  Per G.709 (Table 7-7) these values should be listed as ODTUk.ts (ODTU2.ts, ODTU3.ts, ODTU4.ts).  Note that the formulas in this section are written correctly (e.g., refers to ODTUk.ts)

^@#%$ -  You are 100% correct.  This once again demonstrates why it is
generally a bad idea to copy text/format/values from other
specifications rather than just referencing them.  Can you file an
errata on this?

> Table 2 for ODUflex(GFP) is correctly referring to ODUk.ts, but I wanted to point out the the values for ODUk.ts are different than ODTUk.ts used for ODUflex(CBR). ODUk.ts is given in G.709 Table 7-8.  You may want to explicitly show the ODUk.ts values to be consistent with ODUflex(CBR), although this update is not absolutely necessary as the text is correct.
If you really want to see this changed, I suggest that you propose a
specific revision in the errata.

Thank you!
Lou

> Fred
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