Re: [re-ECN] preliminary draft of problem statement- authors wanted

[Michael Menth <[e-mail]>]

Hi Toby,

here is some text for the abstract.

>    We need to add an abstract summarising the problem and pointing
>
>    towards congestion exposure as an answer...
>

I like it short:

The idea of congestion exposure means that a flow reveals an estimate of 
the congestion it causes on its remaining downstream path. It makes 
policing or other actions depending on downstream congestion in the 
Internet more effective and leads thereby to a more efficient and fairer 
Internet. This document motivates the need for congestion exposure and 
illustrates its usefulness in different use cases. Therefore, actions 
should be taken to implement a simple form of congestion exposure in the 
Internet.

However, an enumeration for what congestion exposure may be useful can 
help to catch the reader's interest:

The idea of congestion exposure means that a flow reveals an estimate of 
the congestion it causes on its remaining downstream path. Congestion 
exposure may be useful for various purposes, e.g.,  meaningful policing 
at network ingresses, congestion-based accounting between ISPs, fairer 
bandwidth sharing among users, increased trust in the 
congestion-responsiveness of end-systems, and possibly 
congestion-dependent load balancing and routing. Therefore, congestion 
exposure leads to a more efficient and fairer Internet. This document 
motivates the need for congestion exposure and illustrates its 
usefulness in different use cases. Therefore, actions should be taken to 
implement a simple form of congestion exposure in the Internet.

The abstract may also contain a summary of the problem (I don't find 
it's necessary in the abstract) and be placed before the text above:

The Internet relies on TCP's congestion control algorithm and saved it 
from a major congestion collapse since its adoption. However, TCP is 
applied on a voluntary base and the bandwidth is fairly shared among 
flows instead of users. This is problematic so that ISPs take simple or 
advanced policing actions on some sorts of traffic. However, since 
congestion on the downstream path of a flow is not visible, these 
approaches possibly hit users unnecessarily and are not effective enough.


Regards,

    Michael

[e-mail] schrieb:
> Hi Michael,
>
> Thanks for the useful feedback. Clearly this document is still in its
> very early stages. I will try and produce a new version by end of the
> week  which will hopefully address some of your comments.
>
> Meanwhile I am still keen to get volunteers willing to contribute chunks
> of text for any of the sections. 
>
> Toby
>
>   
>> -----Original Message-----
>> From: Michael Menth [mailto:[e-mail]]
>> Sent: 23 September 2009 22:41
>> To: Moncaster,T,Toby,DER3 R
>> Cc: [e-mail]
>> Subject: Re: [re-ECN] preliminary draft of problem statement- authors
>> wanted
>>
>> Hi Toby,
>>
>> I read the whole document and still it is unclear in many parts. I
>> marked them in the attached doc-file. I hope this helps to improve its
>> clarity.
>>
>> Regards,
>>
>>     Michael
>>
>> [e-mail] schrieb:
>>     
>>> Hi All,
>>>
>>> As promised here is a new draft of the problem statement with a bit
>>>       
>> more meat on the bones. There is still an awful lot of work to be done
>> on this and not too much time to do it. Our absolute deadline to get
>> something in is October 19th - only just over 3 weeks away...
>>     
>>> As before I would welcome any contributions of text or general
>>>       
>> comments. When I have a bit more time I will do proper xml2rfc author
>> entries for everyone that has contributed... For political reasons I
>> want it to be clear that this is a document that has been worked on
>> from people across the whole range of the IETF community.
>>     
>>> Toby
>>>
>>> ____________________________________________________________________
>>> Toby Moncaster, Senior Researcher, Network Infrastructure Practise
>>> B54/70 Adastral Park, Ipswich, IP53RE, UK.  [phone]
>>>
>>>
>>>
>>>
>>>
>>>       
> ---------------------------------------------------------------------
>   
>> -
>>     
>>> --
>>>
>>> _______________________________________________
>>> re-ECN mailing list
>>> [e-mail]
>>> https://www.ietf.org/mailman/listinfo/re-ecn
>>>       
>> --
>> Dr. Michael Menth, Assistant Professor
>> University of Wuerzburg, Institute of Computer Science Am Hubland, D-
>> 97074 Wuerzburg, Germany, room B206
>> phone: [phone] (new), fax: [phone]
>> mailto:[e-mail]
>> http://www3.informatik.uni-wuerzburg.de/research/ngn
>>     

-- 
Dr. Michael Menth, Assistant Professor
University of Wuerzburg, Institute of Computer Science
Am Hubland, D-97074 Wuerzburg, Germany, room B206
phone: [phone] (new), fax: [phone]
mailto:[e-mail]
http://www3.informatik.uni-wuerzburg.de/research/ngn