Re: [conex] Fwd: New Version Notification for draft-wagner-conex-credit-00.txt
John Leslie <john@jlc.net> Fri, 12 July 2013 10:44 UTC
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Date: Fri, 12 Jul 2013 06:44:17 -0400
From: John Leslie <john@jlc.net>
To: David Wagner <david.wagner@ikr.uni-stuttgart.de>
Message-ID: <20130712104417.GO18393@verdi>
References: <201307121201.58082.david.wagner@ikr.uni-stuttgart.de>
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Subject: Re: [conex] Fwd: New Version Notification for draft-wagner-conex-credit-00.txt
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David Wagner <david.wagner@ikr.uni-stuttgart.de> wrote: > > we submitted a new draft describing potential definitions of credit > and credit handling in the audit. This strikes me as a good idea -- there has been confusion about that, and having a separate draft will probably aid discussion here. > Abstract: Let me comment on the Abstract before I read the whole draft... > Congestion Exposure (ConEx) is a mechanism by which senders inform > the network about the congestion encountered by previous packets on > the same flow. This indeed is the way we define ConEx. > In order to make ConEx information useful, reliable auditing is > necessary to provide a strong incentive to declare ConEx > information honestly. I personally disagree with this statement. (I'd be happy to go into why I disagree; but I don't think this is the right email to do so.) > However, there is always a delay between congestion events and > the respective ConEx signal at the audit. To avoid state and > complex Round-Trip Time estimations at the audit, in > [draft-ietf-conex-abstract-mech] it is proposed to use credit signals > sent in advance to cover potential congestion in the next feedback > delay duration. Unfortunately, introducing credit does not provide > incentives to honestly report congestion. This document lists > potential issues regarding the proposed crediting and discusses > potential solutions approaches to interpret and handle credits at the > audit. That text belongs in an Introduction. IMHO, the Abstract should limit itself to something like: " " The ConEx Working Group is designing an audit mechanism to test " whether congestion encountered is being honestly reported by the " sender. This mechanism involves "credit" markings for possible " congestion not yet encountered. This document discusses issues " regarding such credit markings. -- John Leslie <john@jlc.net>
- [conex] Fwd: New Version Notification for draft-w… David Wagner
- Re: [conex] Fwd: New Version Notification for dra… John Leslie
- Re: [conex] Fwd: New Version Notification for dra… David Wagner