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Re: [CCAMP] Transcoding factor in OTN signaling in draft-zhang-ccamp-gmpls-evolving-g709

Lou Berger <lberger@labn.net> Mon, 10 October 2011 10:31 UTC

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Date: Mon, 10 Oct 2011 06:31:05 -0400
From: Lou Berger <lberger@labn.net>
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Cc: ccamp@ietf.org
Subject: Re: [CCAMP] Transcoding factor in OTN signaling in draft-zhang-ccamp-gmpls-evolving-g709
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Fred,
	Thank you for the additional information.  G-PID usage is still being
discussed.  In general, factors that impact resource/label allocation
are reflected in traffic parameters.

Lou

On 10/7/2011 3:07 PM, Gruman, Fred wrote:
> Hello,
> 
>  
> 
> G.709 ODUflex(CBR) has transcoding factor T in the calculation of the
> number of TS. Does the transcoding factor need to be explicitly signaled
> as part of the OTN traffic parameters for ODUflex(CBR)?
> 
>  
> 
> I don’t know if there are any currently defined ODUflex(CBR) clients
> that would use a transcoding factor other than 1, but if this exists now
> or in the future, the intermediate nodes would need to know the
> transcoding factor in order to calculate the correct number of TS.
> Perhaps this could be inferred based on GPID but then intermediate nodes
> would need to interpret GPID (I seem to recall another thread that GPID
> should be used at end nodes plus maybe penultimate hop).
> 
>  
> 
> Best Regards,
> 
> Fred
> 
>  
> 
> 
> 
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