Re: [PCN] Concensus questions from Thursday's PCN meeting
"Georgios Karagiannis" <karagian@cs.utwente.nl> Wed, 26 March 2008 09:52 UTC
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From: Georgios Karagiannis <karagian@cs.utwente.nl>
To: 'Steven Blake' <steven.blake@ericsson.com>
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Date: Wed, 26 Mar 2008 10:49:37 +0100
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Cc: pcn@ietf.org
Subject: Re: [PCN] Concensus questions from Thursday's PCN meeting
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Hi Steven The comments that I have sent in the previous email cannot be clearly seen. Please see again in line: > -----Original Message----- > From: pcn-bounces@ietf.org [mailto:pcn-bounces@ietf.org] On > Behalf Of Georgios Karagiannis > Sent: woensdag 26 maart 2008 10:00 > To: 'Steven Blake' > Cc: pcn@ietf.org > Subject: Re: [PCN] Concensus questions from Thursday's PCN meeting > > Hi Steven > > Please see in line! > > > > -----Original Message----- > > From: Steven Blake [mailto:steven.blake@ericsson.com] > > Sent: dinsdag 25 maart 2008 16:20 > > To: Georgios Karagiannis > > Cc: pcn@ietf.org > > Subject: RE: [PCN] Concensus questions from Thursday's PCN meeting > > > > On Thu, 2008-03-20 at 18:59 +0100, Georgios Karagiannis wrote: > > > > [snip] > > > > > When router is preferentially dropping marked packets: > > > > > > PCN_lower_threshold (1) < C1*(99%) - 1%* (C2 + C3 + C4 + C5) > > > > > > > > > > > > > > > ----------------------------------------------------- > > > > > > When router is dropping marked and unmarked packets are > with equal > > > probability p: > > > > > > > > > PCN_lower_threshold (2) < MINIMUM {C1; SECOND_PART}, where: > > > > > > [(C1 + C6) - 1%C1 - 1%(C2 + C3 + C4 + C5)]} > > > SECOND_PART= ---------------------------- > > > 50% > > > > > > PCN_lower_threshold (2) < MINIMUM {C1; SECOND_PART}, where: > > > > > > [(2*C1) - 1%C1 - 1%(C2 + C3 + C4 + C5)]} > > > SECOND_PART = -------------------------------- > > > 50% > > > > > > => PCN_lower_threshold (2) < C1 > > > > > > > > > Therefore, the second scheme (2) can be considered more > robust and > > > more stable then the first scheme. > > > > Georgios, > > > > If I assume that C1 = C2 = C3 = C4 = C5, then > > > > PCN_lower_threshold(1) < (0.99 * C1) - (0.01 * 4 * C1) = 0.95 * C1 > > > > whereas > > > > PCN_lower_threshold(2) < C1 > > > > I think you will agree that this is not a significant difference. > Georgios: For this example, yes, but note that not all links in the PCN domain will support equal bandwidth! Consider that the following situation occurs: C2=C3=C4=C5= 10*C1 Thenn (1) will be: PCN_lower_threshold(1) < (0.99 * C1) - (0.01 * 4 * 10 *C1) PCN_lower_thhershold (1) < C1 (0.99 - 0.4) PCN_lower_thhershold (1) < C1 * 0.59 Whereas: PCN_lower_threshold (2) < C1 Best regards, Georgios > > > > > > > > > > > Regards, > > > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > Steven Blake <steven.blake@ericsson.com> > > Ericsson/Redback Networks +1 919-472-9913 > > > > > _______________________________________________ > PCN mailing list > PCN@ietf.org > https://www.ietf.org/mailman/listinfo/pcn > _______________________________________________ PCN mailing list PCN@ietf.org https://www.ietf.org/mailman/listinfo/pcn
- [PCN] Concensus questions from Thursday's PCN mee… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… toby.moncaster
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- Re: [PCN] Concensus questions from Thursday's PCN… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- [PCN] [Fwd: RE: Concensus questions from Thursday… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Wei Gengyu
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… philip.eardley
- Re: [PCN] Concensus questions from Thursday's PCN… Michael Menth
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… philip.eardley
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… philip.eardley
- Re: [PCN] Concensus questions from Thursday's PCN… toby.moncaster
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- Re: [PCN] Concensus questions from Thursday's PCN… Wei Gengyu
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… philip.eardley
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Geib, Ruediger
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- Re: [PCN] Concensus questions from Thursday's PCN… Anna Charny (acharny)
- [PCN] Fw: Concensus questions from Thursday's PCN… Wei Gengyu
- [PCN] On pcn and overloads (was: Concensus questi… Anna Charny (acharny)
- Re: [PCN] On pcn and overloads (was: Concensus qu… Geib, Ruediger
- Re: [PCN] On pcn and overloads (was: Concensus qu… Anna Charny (acharny)
- Re: [PCN] On pcn and overloads (was: Concensus qu… toby.moncaster
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- [PCN] Georgios's example philip.eardley
- Re: [PCN] Concensus questions from Thursday's PCN… Steven Blake
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Georgios Karagiannis
- Re: [PCN] Concensus questions from Thursday's PCN… Michael Menth
- Re: [PCN] Concensus questions from Thursday's PCN… Michael Menth
- Re: [PCN] Concensus questions from Thursday's PCN… philip.eardley