Re: [AVTCORE] WGLC on draft-ietf-avtcore-ecn-for-rtp-04

[Magnus Westerlund <[e-mail]>]

On 2011-10-07 20:30, Belling, Thomas (NSN - DE/Munich) wrote:
> Dear all,
> 
>  
> 
> I checked the draft and believe it is ready for publication.
> 
>  
> 
> I only have a small proposal for improvement, that could be incorporated
> if a revision becomes necessary due to other comments:
> 
>  
> 
> I noticed that you changed "must" to "should" in the Implementation
> Considerations In Clause 9 when going from version 01 to 02:
> 
>  
> 
>     To allow the use of ECN with RTP over UDP, the RTP implementation  
> 
>     *should* be able to set the ECT bits in outgoing UDP datagrams, and  
> 
>     *should* be able to read the value of the ECT bits on received UDP   
> 
>     datagrams. 
> 
>  
> 
> After some discussions with Magnus I understand that the exception
> motivating the “should” rather than a “must” is implementations only
> supporting sending or receiving of unidirectional media streams. But it
> would be clearer to state that explicitly, for instance by saying:
> 
>  
> 
> "To allow the use of ECN with RTP over UDP, an RTP implementation  
> desiring to support receiving ECN controlled media streams must support
> reading the value of the ECT bits on received UDP datagrams, and an RTP
> implementation desiring to support sending ECN controlled media streams
> must support setting the ECT bits in outgoing UDP datagrams."
> 

I think this a good clarification.

Cheers

Magnus Westerlund

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