Re: [re-ECN] Viability issue #3

> -----Original Message-----
> From: re-ecn-bounces@ietf.org [mailto:re-ecn-bounces@ietf.org] On
> Behalf Of Leslie Daigle
> Sent: 05 November 2009 06:07
> To: re-ecn@ietf.org
> Subject: [re-ECN] Viability issue #3
> 
> 
> [This attempts to outline an issue that could be perceived as
> challenging the viability of congestion exposure work.  The goal is to
> capture the issue, as well as itemize reasonable supporting arguments
> (for viability) and remaining questions to be addressed.  Please
> respond
> with suggestions as needed for each section.  ]
> 
> Viability Issue #3
> 
> Does this scale to the whole Internet?

Yes... It just may not give the same degree of accuracy everywhere

> 
> Suggested:
> 
> 1/ Discussions of working with ECN-enabled and non-ECN enabled routers
> begins to address this.

WE will need to do a proper survey of ECN-readiness. Arguably responding
to drop coming from a RED queue should give very similar results, it
just doesn't allow intermediate nodes to work out the downstream
congestion (and we need to set out the full implications of that)

> 
> 
> Questions:
> 
> 2/ Are there any issues with scale (processing, state) in core
routers?

I hope not as in general it is only border devices that are expected to
change in response to this (aside from any issues of ECN-capability).

> 
> 
> Leslie.
> 
> --
> 
> -------------------------------------------------------------------
> "Reality:
>       Yours to discover."
>                                  -- ThinkingCat
> Leslie Daigle
> leslie@thinkingcat.com
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