Re: [aqm] Questioning each PIE heuristic - moving averages and rate measurement

2017-05-26 Thread Bob Briscoe
> ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm -- Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Questioning each PIE heuristic - moving averages and rate measurement

2017-05-26 Thread Bob Briscoe
Michael, Yes, I should have said that the most useful aspect of your paper is the model that ties all the different algos together allowing comparison. Bob On 25/05/17 08:55, Michael Menth wrote: Hi Bob, hi Rong, Am 25.05.2017 um 00:34 schrieb Bob Briscoe: Michael, I just started

Re: [aqm] Questioning each PIE heuristic - moving averages and rate measurement

2017-05-24 Thread Bob Briscoe
1.03 121.02 131.02 141.01 151.01 161.01 171.01 181.00 191.00 201.00 Cheers Bob On 30/03/17 10:57, Michael Menth wrote: Hi all, Am 30.03.2017 um 11:08 schrieb Jonathan Morton: On 30 Mar, 201

Re: [aqm] Questioning each PIE heuristic

2017-03-30 Thread Bob Briscoe
ching logic for that. If your underlying algorithm is sound, it will naturally decay to zero packet drops if the empty-queue condition persists. - Jonathan Morton -- ____________ Bob Briscoe

Re: [aqm] Questioning each PIE heuristic

2017-03-29 Thread Bob Briscoe
Rong Pan mailto:ro...@cisco.com>>, Luca Muscariello <mailto:luca.muscarie...@gmail.com>>, "Bless, Roland (TM)" mailto:roland.bl...@kit.edu>> Cc: tsvwg IETF list mailto:ts...@ietf.org>>, Fred Baker mailto:fredbaker.i...@gmail.com>>, Bob Briscoe mailto:

Re: [aqm] Questioning each PIE heuristic

2017-03-28 Thread Bob Briscoe
Rong, Some comments inline. And one remaining question at the end... On 28/03/17 02:04, Rong Pan (ropan) wrote: Bob, Sorry for the late reply. I have been traveling. Please see inlineŠ Rong On 3/23/17, 5:01 PM, "aqm on behalf of Bob Briscoe" wrote: Rong, Preethi, Greg, Fred,

[aqm] Questioning each PIE heuristic

2017-03-23 Thread Bob Briscoe
Rong, Preethi, Greg, Fred, and others involved in PIE, You may recall that when we wrote PI2 we didn't include any of PIE's heuristics. Mostly because PI2 solved the issues they addressed intrinsically. But we left some until we had checked their benefit, which is what I'm doing now... My fi

Re: [aqm] L4S status update

2016-11-28 Thread Bob Briscoe
Roland, On 24/11/16 20:48, Bless, Roland (TM) wrote: Hi Bob, see comments inline, please. Am 22.11.2016 um 20:09 schrieb Bob Briscoe: I share your concern about cc-specific AQMs. But that is not a good characterization of what we're doing. Yep, but it's part of what you're

Re: [aqm] [tcpPrague] L4S status update

2016-11-28 Thread Bob Briscoe
Mario, On 24/11/16 16:57, Mario Hock wrote: Hello Bob and Roland, I followed your discussion and want to share my opinion, here. (Comments inline). Am 22.11.2016 um 20:09 schrieb Bob Briscoe: *Is any AQM CC-neutral?** *Note rule 5 <https://tools.ietf.org/html/rfc7567#section-4.5>

Re: [aqm] [tcpPrague] L4S status update

2016-11-25 Thread Bob Briscoe
Jonathan, On 22/11/16 20:37, Jonathan Morton wrote: On 22 Nov, 2016, at 21:09, Bob Briscoe wrote: {Note 1} I have never got a good answer to my questions on aqm@ietf as to why a sqrt that controls the shrinkage of the spacing between dropped packets has something to do with the steady state

Re: [aqm] L4S status update

2016-11-22 Thread Bob Briscoe
Indeed, at the moment, when DCTCP is on its own in the L4S queue of the DualQ AQM as coded now, it hits up against a step threshold, which makes it behave as 1/p^2, not 1/p. For now, that's just because we didn't want to change too much about DCTCP at one time. But it's also got some

[aqm] L4S status update

2016-10-31 Thread Bob Briscoe
thms solve the problem (in plain English and maths), how the Dual Queue Coupled AQM algorithm works, and recording the results of extensive testbed experiments. “`/*Data Centre to the Home’: Ultra-Low Latency for All*/ <http://www.bobbriscoe.net/projects/latency/dctth_preprint.

[aqm] tsvwg, aqm or both: WG name in continuing drafts related to AQM

2016-10-31 Thread Bob Briscoe
helps search engines find it when people look for aqm-dualq-coupled? Makes sense? Bob -- Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org

Re: [aqm] working group status and rechartering vs. closing

2016-06-13 Thread Bob Briscoe
doption activities. Bob ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm -- __

Re: [aqm] working group rechartering

2016-06-13 Thread Bob Briscoe
aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm -- Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] working group status and rechartering vs. closing

2016-06-01 Thread Bob Briscoe
topics will be useful to hear on the mailing list and in Berlin. ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm -- ________ Bob Briscoe http://bobbriscoe.net/

[aqm] L4S/DualQ BoF-forming on tcpprague list: pls air your concerns

2016-05-19 Thread Bob Briscoe
Volunteers pls: L4S non-WG-forming BoF proposal cut-off approaching Date: Wed, 18 May 2016 12:47:26 +0100 From: Bob Briscoe To: TCP Prague List Folks, At the Low Latency, Low Loss Scalable throughput (L4S) Bar Bof in Buenos Aires, there was support for a BoF about L4S, In the

Re: [aqm] [tcpm] [tcpPrague] [tsvwg] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-04-07 Thread Bob Briscoe
:44, Bob Briscoe wrote: Folks, Reminder, agenda & supporting materials below for the Bar BoF on L4S / DualQ Coupled AQM / TCP Prague *Event details** *Date/time: 09:00 - 10:00 local time (ART = 12-13:00 UTC) Thu 7 Apr 2016 Room: Quebracho B *Supporting materials / background:** *h

Re: [aqm] [tcpm] [tcpPrague] [tsvwg] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-04-06 Thread Bob Briscoe
9:55 end Most time will be allowed for people to talk from the floor. Cheers Bob & Koen On 05/04/16 13:02, Bob Briscoe wrote: Folks, We have a time and room for this Bar BoF: Date/time: 09:00 - 10:00 ART (= 12-13:00 UTC) Thu 7 Apr 2016 Room: Quebracho B We have the regular IETF remot

Re: [aqm] [tcpm] [tcpPrague] [tsvwg] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-04-05 Thread Bob Briscoe
016 at 12:21 PM, Spencer Dawkins at IETF mailto:spencerdawkins.i...@gmail.com>> wrote: Just to try to be helpful ... On Mon, Feb 22, 2016 at 2:54 AM, Bob Briscoe mailto:i...@bobbriscoe.net>> wrote: John, On 19/02/16 18:23, John Leslie wrote: Bo

Re: [aqm] [tcpm] [tcpPrague] [tsvwg] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-04-01 Thread Bob Briscoe
On Mon, Feb 22, 2016 at 2:54 AM, Bob Briscoe mailto:i...@bobbriscoe.net>> wrote: John, On 19/02/16 18:23, John Leslie wrote: Bob Briscoe mailto:i...@bobbriscoe.net>> wrote: I'm cross-posting 'cos this impacts 3 IETF WGs a

Re: [aqm] Last Call: (FlowQueue-Codel) to Experimental RFC

2016-03-25 Thread Bob Briscoe
Jonathan, It does make sense. Inline... On 24/03/16 20:08, Jonathan Morton wrote: On 21 Mar, 2016, at 20:04, Bob Briscoe wrote: The experience that led me to understand this problem was when a bunch of colleagues tried to set up a start-up (a few years ago now) to sell a range of "equi

Re: [aqm] Last Call: (FlowQueue-Codel) to Experimental RFC

2016-03-23 Thread Bob Briscoe
de deployable, with more people trying them, we're not going to get anywhere. There's still billions of boxes left to deploy and a long tail of deployed gear that will probably last 10 years or more. -- Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Last Call: (FlowQueue-Codel) to Experimental RFC

2016-03-21 Thread Bob Briscoe
Cheers Bob [Hohlfeld14] Hohlfeld, O., Pujol, E., Ciucu, F., Feldmann, A. & Barford, P., "A QoE Perspective on Sizing Network Buffers," In: Proc. Internet Measurement Conf (IMC'14) pp.333-346 ACM (November 2014) -Toke -- Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Last Call: (FlowQueue-Codel) to Experimental RFC

2016-03-19 Thread Bob Briscoe
IESG, authors, 1. Safe? My main concern is with applicability. In particular, the sentence in section 7 on Deployment Status: "We believe it to be a safe default and encourage people running Linux to turn it on: ...". and a similar sentiment repeated in the conclusions. "and we believe it to

Re: [aqm] [tcpPrague] [tsvwg] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-02-22 Thread Bob Briscoe
John, On 19/02/16 18:23, John Leslie wrote: Bob Briscoe wrote: I'm cross-posting 'cos this impacts 3 IETF WGs and interested implementers. We would like to propose a Bar BoF at the Buenos Aires IETF, about L4S, DualQ and solutions to the TCP Prague Requirements. This fee

[aqm] (Bar) BoF @IETF-95 'Ultra-Low Queuing Delay for All' (L4S, DualQ Coupled AQM, TCP Prague)?

2016-02-19 Thread Bob Briscoe
et... If you missed all the above, we've pulled together videos of demos, short papers, I-Ds etc here: https://riteproject.eu/dctth/ Incuding this particularly useful 2-pager: “Ultra-Low Delay for All <http://www.internetsociety.org/publications/ietf-journal-november-2015/ultra-low-delay-for-a

Re: [aqm] ECT(1)

2015-10-19 Thread Bob Briscoe
: Koen De Schepper , Ing-jyh Tsang , Bob Briscoe , ing-jyh.ts...@alcatel-lucent.com A new version of I-D, draft-briscoe-tsvwg-ecn-l4s-id-00.txt has been successfully submitted by Bob Briscoe and posted to the IETF repository. Name: draft-briscoe-tsvwg-ecn-l4s-id Revision:

Re: [aqm] ECT(1)

2015-10-15 Thread Bob Briscoe
up, we can't tell for sure. Bob - Jonathan Morton ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm -- Bob Briscoe http://

Re: [aqm] CoDel's control law that determines drop frequency

2015-10-01 Thread Bob Briscoe
y & Van back in 2013 that started this thread and still hasn't been answered. Cheers Bob Does this make any sense? Regards, Polina On 09/30/2015 02:59 PM, Bob Briscoe wrote: Polina, I think this was it: <https://www.ietf.org/proceedings/85/slides/slides-85-iccrg-2.pdf> I have a se

Re: [aqm] ECT(1)

2015-09-30 Thread Bob Briscoe
Mikael, I'll try to explain better how I'm hoping to use DSCP temporarily without needing to solve the Diffserv interconnect problem... On 06/08/15 21:38, Mikael Abrahamsson wrote: On Tue, 4 Aug 2015, Bob Briscoe wrote: *Combining ECT(0) and CE with a globally assigned DSCP sol

Re: [aqm] CoDel's control law that determines drop frequency

2015-09-30 Thread Bob Briscoe
Also below I've restated a couple of points I made back in 2013 when I first posted this. On 12/11/13 22:30, Bob Briscoe wrote: 5/ My analysis also shows that the rate of increase in drop probablity is inversely proportional to the link rate. I don't believe this is desirable, as it

Re: [aqm] CoDel's control law that determines drop frequency

2015-09-30 Thread Bob Briscoe
mailman/listinfo/aqm -- ________ Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] CoDel's control law that determines drop frequency

2015-09-30 Thread Bob Briscoe
tsman wrote: Dear Bob, On 09/30/2015 10:50 AM, Bob Briscoe wrote: Early on, Rong Pan showed that it takes CoDel ages to bring high load under control. I think this linear increase is the reason. Is there a link to this ? Polina ___ aqm mailing list a

Re: [aqm] CoDel's control law that determines drop frequency

2015-09-24 Thread Bob Briscoe
It was surprising to me at least, so I thought I'd share my findings, in the hope that someone would either find them useful or tell me how they're wrong (or both!). :) -Toke ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/l

Re: [aqm] New I-D: draft-briscoe-aqm-dualq-coupled-00.txt

2015-08-14 Thread Bob Briscoe
Yuchung, On 08/08/15 00:54, Yuchung Cheng wrote: On Fri, Aug 7, 2015 at 7:46 AM, Bob Briscoe wrote: AQM Chairs, list, My co-authors and I have just posted a draft spec of the DualQ Coupled AQM we presented and demonstrated in Prague under the title "Data Centre to the Home&

[aqm] New I-D: draft-briscoe-aqm-dualq-coupled-00.txt

2015-08-07 Thread Bob Briscoe
than it would have if there had been just one FIFO. Cheers Bob, Koen, Olga & Inton. Forwarded Message Subject: New Version Notification for draft-briscoe-aqm-dualq-coupled-00.txt Date: Fri, 07 Aug 2015 06:41:15 -0700 From: internet-dra...@ietf.org To: Koen De Sc

Re: [aqm] ECT(1)

2015-08-06 Thread Bob Briscoe
Gorry, On 06/08/15 09:56, Gorry Fairhurst wrote: A few comments in-line, as someone interested in taking things forward: On 04/08/2015 13:42, Bob Briscoe wrote: John, [Ignore previous - clicked 'send' too early] There was much discussion about this identifier issue in Prague. Ma

Re: [aqm] ECT(1)

2015-08-04 Thread Bob Briscoe
John, [Ignore previous - clicked 'send' too early] There was much discussion about this identifier issue in Prague. Many people are well-aware that the sticking point is availability of an identifier, and its associated politics. On 04/08/15 05:08, John Leslie wrote: Bob Bris

Re: [aqm] ECT(1)

2015-08-04 Thread Bob Briscoe
John, There was much discussion about this identifier issue in Prague. Many people are well-aware that the sticking point is availability of an identifier, and its associated politics. On 04/08/15 05:08, John Leslie wrote: Bob Briscoe wrote: I do not believe an IP (v4) option or a v6

Re: [aqm] ECT(1)

2015-08-03 Thread Bob Briscoe
t does, which need to be resolved before we could even consider Standards Track. At first blush, this looks like a good match for Experimental use of ECT(1). -- John Leslie ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinf

[aqm] Invitation to subscribe to new DCTCP Evolution mailing list: (tcppra...@ietf.org)

2015-07-30 Thread Bob Briscoe
below. And below that, is the original announcement with some context and background URLs. You can catch up on any discussion you've missed using the list archives via the link above. If you want to respond about something most relevant to tcpprague, pls avoid cross-posting to

[aqm] Awesome Low Latency, Low Loss and Scalable Throughput

2015-07-10 Thread Bob Briscoe
dvance. Cheers Bob -- ____________ Bob Briscoe http://bobbriscoe.net/ ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Bob Briscoe
ow is to go idle (even momentarily) then perhaps it was because target is too small. Using some rule you could increase target. Conversely you can heuristically identify when target is likely too large, and reduce it. Simon On 7/3/2015 5:20 AM, Bob Briscoe wrote: AQM chairs and list, 1) Delay

[aqm] Questioning the goal of a hard delay target

2015-07-03 Thread Bob Briscoe
set the config too. Writing this all down cleared up a lot of nagging doubts I had in my mind. I hope it helps others too. Bob PS. Note my new interim email @. -- ________ Bob Briscoe http://bobbrisc

Re: [aqm] draft-ietf-aqm-pie-01: review

2015-07-03 Thread Bob Briscoe
and improvements to the slow-start algorithm (e.g. HSS). Bob PS. Pls note my new interim email @. Sorry for extended delay replying - your mail arrived after I left my office for the last time (I've left BT). I'm still "between jobs", but I'm trying to catch up on unf

Re: [aqm] draft-ietf-aqm-pie-01: review

2015-07-03 Thread Bob Briscoe
ou could build PIE on top of the parts of RED implemented in hardware (but this statement might not be true for all vendors' implementations). Bob -Vishal -- http://www.cs.columbia.edu/~misra/ <http://www.cs.columbia.edu/%7Emisra/> On May 22, 2015, at 9:38 AM, Bob Briscoe <mailto

Re: [aqm] draft-ietf-aqm-pie-01: review

2015-05-22 Thread Bob Briscoe
ing up. Let me just comment on the following thread. I will spend more time on Bob's detailed comments and give feedback later. For now, please see inline… > Thanks, Rong From: Greg White <<mailto:g.wh...@cablelabs.com>g.wh...@cablelabs.com> Date: Wednesday, May 13, 2015 10

Re: [aqm] draft-ietf-aqm-pie-01: review

2015-05-12 Thread Bob Briscoe
en the mins came close to the target in recent time (e.g. by an EWMA), then the more likely it would drop. GIven no magic number will be correct, it's better to use a continuous approach, rather than when you're one side of a threshold you're fine and the other you're dea

[aqm] Fwd: ECN AQM parameters

2015-05-09 Thread Bob Briscoe
f expected RTTs. The former might be 100ms, but the latter is more likely to be 15-20ms, given most traffic in the developed world these days comes from CDNs. This could make significant difference to performance. Bob Date: Tue, 14 Apr 2015 19:59:47 +0100 To: "Fred Baker (fred)"

Re: [aqm] draft-ietf-aqm-pie-01: review

2015-05-09 Thread Bob Briscoe
the times it knows drops will occur). But it's a lot easier to just send faster by ignoring drop signals anyway. CoDel's determinism might become problematic if unresponsiveness to congestion became a serious problem, so that it became necessary to police c

[aqm] draft-ietf-aqm-pie-01: review

2015-05-08 Thread Bob Briscoe
re not in the header block. * About half ought to be made to depend on other constants * Need to state how to set the remaining constants for different environments * Implementation suggestion for Autotuning alpha & beta Bob _

Re: [aqm] bob's summary of ecn and aqm use cases

2015-05-08 Thread Bob Briscoe
ts/JqxCe2pFr67 ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm Bob Briscoe, BT ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

[aqm] PIE (and CoDel) drafts: proposed standard vs informational?

2015-04-29 Thread Bob Briscoe
the IETF want to standardise it? Is the intention that AQM-chair will be a job for life? Bob ________ Bob Briscoe, BT ___ aqm mailing list a

[aqm] Gaming ECN (again) (was: think once to mark, think twice to drop: draft-ietf-aqm-ecn-benefits-02)

2015-04-15 Thread Bob Briscoe
David, At 22:46 13/04/2015, David Lang wrote: On Mon, 13 Apr 2015, Bob Briscoe wrote: David, Returning from a fortnight offlist... I think your conception of how ECN works is incorrect. You describe ECN as if the AQM marks one packet when it drops another packet. You say that the ECN-mark

Re: [aqm] think once to mark, think twice to drop: draft-ietf-aqm-ecn-benefits-02

2015-04-13 Thread Bob Briscoe
teresing to provide soem way for the application sending the traffic to detect dropped packets and ECN responses. For example, a streaming media source (especially an interactive one like video conferencing) could adjust the bitrate that it's sending. David Lang ___

[aqm] Pointlessness of De-randomization

2014-11-10 Thread Bob Briscoe
ssumption "as long as the flow rate is small relative to the link capacity", which might not be applicable in your deployment scenario. However, it might be worth you taking a look. Bob _________

Re: [aqm] adoption call: draft-welzl-ecn-benefits

2014-08-12 Thread Bob Briscoe
to hide losses, I guess it is a good example to consider whether ECN still offers sufficient benefits over and above just removing losses. Cheers Bob -- John Leslie ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm ___

Re: [aqm] I-D Action: draft-ietf-aqm-recommendation-07.txt

2014-08-11 Thread Bob Briscoe
thing about any of the specifics in this para in the AQM draft. > Bob —— +GF: I’m also considering replacing /congestive collapse/ by /congestion collapse/ which seems a more common term, as noted by John L. Works for me. Regards Bob __

Re: [aqm] I-D Action: draft-ietf-aqm-recommendation-07.txt

2014-08-11 Thread Bob Briscoe
diff are available at > > tools.ietf.org. > > > > Internet-Drafts are also available by anonymous FTP at: > > ftp://ftp.ietf.org/internet-drafts/ > > > > ___ > > aqm mailing list > > aqm@ietf.org > > http

Re: [aqm] last call results on draft-ietf-aqm-recommendation

2014-05-16 Thread Bob Briscoe
Dave, At 21:25 15/05/2014, Dave Taht wrote: On Thu, May 15, 2014 at 9:17 AM, Bob Briscoe wrote: > Gorry, > > > At 16:55 15/05/2014, go...@erg.abdn.ac.uk wrote: >> >> Great, I look forward to comments on the actual text. I agree the front >> part needs more struct

Re: [aqm] last call results on draft-ietf-aqm-recommendation

2014-05-16 Thread Bob Briscoe
ors did not start this... the document we update uses this language and I think in the update it needs to be confined to the early sections, possibly with your text on why there is not mention elsewhere. We look forward to the detailed comments. Gorry _

Re: [aqm] last call results on draft-ietf-aqm-recommendation

2014-05-15 Thread Bob Briscoe
's only, but allow me one nit about the Intro: > > " there is currently no consensus solution to controlling the > congestion caused by such aggressive flows; significant research and > engineering will be required before any solution will be available. > It is i

Re: [aqm] last call results on draft-ietf-aqm-recommendation

2014-05-15 Thread Bob Briscoe
ity of the Internet. " The draft could at least mention congestion policing and ConEx RFCs coming out of the IETF right now (e.g. RFC6789 and draft-ietf-conex-abstract-mech, which is with the IESG). I promise I'll do a proper detailed review of the new text ASAP. Bob At 13:13 15/05/2

Re: [aqm] last call results on draft-ietf-aqm-recommendation

2014-05-15 Thread Bob Briscoe
s at least some of the points made. -- Wes Eddy MTI Systems ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm Bob Briscoe,

[aqm] How AQM Guidance might be misinterpreted

2014-01-23 Thread Bob Briscoe
t out in the AQM Guidance, probably under: "4.5. AQM algorithms SHOULD NOT be dependent on specific transport protocol behaviours" which currenty has only one example: "don't assume TCP". Bob Date: Thu, 23 Jan 2014 14:51:25 + To: Ingemar Johansson S From: Bob Bris

Re: [aqm] [tsvwg] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2014-01-23 Thread Bob Briscoe
Ingemar, inline... At 06:36 22/01/2014, Ingemar Johansson S wrote: Hi Please find answers inline /Ingemar > -Original Message- > From: Bob Briscoe [mailto:bob.bris...@bt.com] > Sent: den 21 januari 2014 23:50 > To: Ingemar Johansson S; ruediger.g...@telekom.de > Cc:

Re: [aqm] [tsvwg] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2014-01-21 Thread Bob Briscoe
expertise is too > limited to judge details). > > Regards, > > Ruediger > > -Ursprüngliche Nachricht- > Von: tsvwg-boun...@ietf.org [mailto:tsvwg-boun...@ietf.org] Im Auftrag > von Bob Briscoe > Gesendet: Montag, 4. November 2013 23:04 > An: tsvwg IETF list; AQM IETF list >

Re: [aqm] [e2e] What is a good burst? -- AQM evaluation guidelines

2013-12-15 Thread Bob Briscoe
he network, but not so large as to materially increase measured latency or probability of loss. At the point that it sends data in a manner that creates a sustained queue, it has exceeded what would be considered a useful burst size. Bob Briscoe, BT ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Text for aqm-recommendation on independent ECN config

2013-12-13 Thread Bob Briscoe
If you can make red work on wifi, I would love to know how. My take on this list was that we were trying to standardize on some aqm technologies that exist and are being deployed today. Bus is leaving the station. On Thu, Dec 12, 2013 at 4:05 PM, Bob Briscoe wrote: > Dave, > > > At 22:11

Re: [aqm] Text for aqm-recommendation on independent ECN config

2013-12-12 Thread Bob Briscoe
n Datacenters via Local Link Balancing http://www.irt-systemx.fr/wp-content/uploads/2013/12/AINTEC.ppt Sigh. I'll On Thu, Dec 12, 2013 at 11:35 AM, Jim Gettys wrote: > > > > On Wed, Dec 11, 2013 at 2:21 PM, Bob Briscoe wrote: >> >> Jim, >> >> >>

Re: [aqm] Text for aqm-recommendation on independent ECN config

2013-12-12 Thread Bob Briscoe
> > > > True, however, it only means that you'll overshoot more or the time was > > too short to retain the trained count in memory (and in that case CoDel > > forgets it like you admit). Or do you think that the magic number applied > > to count on the recall (was

Re: [aqm] Text for aqm-recommendation on independent ECN config

2013-12-11 Thread Bob Briscoe
Jim, At 16:55 11/12/2013, Jim Gettys wrote: On Tue, Dec 10, 2013 at 10:04 PM, Bob Briscoe <<mailto:bob.bris...@bt.com>bob.bris...@bt.com> wrote: Jim, I'm just checking we're not talking past each other. I'll repeat two quotes from each of us, then comment. On

Re: [aqm] Text for aqm-recommendation on independent ECN config

2013-12-10 Thread Bob Briscoe
Jim, I'm just checking we're not talking past each other. I'll repeat two quotes from each of us, then comment. On Thu, Dec 5, 2013 at 1:13 PM, Bob Briscoe <<mailto:bob.bris...@bt.com>bob.bris...@bt.com> wrote: 3{New}. It SHOULD be possible to make different ins

[aqm] Text for aqm-recommendation on independent ECN config

2013-12-05 Thread Bob Briscoe
which assumed that only one instance of an AQM will handle both ECN-capable and non-ECN-capable packets. Bob ____________ Bob Briscoe, BT _

Re: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT

2013-11-12 Thread Bob Briscoe
y not be necessary to switch an ECN flow to AQM-generated drops - it may be sufficient to switch both ECN and drop traffic to tail drop at the same time - when load exceeds the operating region of the AQM as a whole. But, you may be right - needs more experiments. Bob Richard Scheffenegger

[aqm] CoDel's control law that determines drop frequency

2013-11-12 Thread Bob Briscoe
a network assuming there will be more flows on faster links. So, in order to remain as responsive on faster links, CoDel's control law will need to be tuned for the expected number of flows before it is deployed on different size links. Cheers

Re: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT

2013-11-12 Thread Bob Briscoe
Greg, inline... At 18:57 11/11/2013, Greg White wrote: On 11/11/13, 9:02 AM, "Bob Briscoe" wrote: >Greg, > >At 06:54 09/11/2013, Greg White wrote: >>This is very interesting work. There are a lot of unanswered questions >>about ecn / no-ecn coexistence and d

Re: [aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-12 Thread Bob Briscoe
iling list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm ________ Bob Briscoe, BT ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] [tsvwg] Immediate ECN: Autotuning AQM for RTT

2013-11-11 Thread Bob Briscoe
. Is that what you meant? Bob -Greg On 11/7/13, 1:03 PM, "Bob Briscoe" wrote: >Folks, > >"Immediate ECN" slides: ><http://bobbriscoe.net/presents/1311ietf/1311tsvarea-iecn.pptx> ><http://bobbriscoe.net/presents/1311ietf/1311tsvarea-iecn.pdf&g

Re: [aqm] Immediate ECN: Autotuning AQM for RTT

2013-11-11 Thread Bob Briscoe
his effect), but I had to cut short, because I had to squeeze a 20min presentation into the last 15 mins of tsvwg. Regards Bob Thanks, Rong On 11/7/13 12:03 PM, "Bob Briscoe" wrote: >Folks, > >"Immediate ECN" slides: ><http://bobbriscoe.net/presents

[aqm] Immediate ECN: Autotuning AQM for RTT

2013-11-07 Thread Bob Briscoe
CoDel) max_burst = 0 (for PIE) Bob PS. We have a paper under submission, which we can supply on request. We plan to document this in the IETF too. ________ Bob Briscoe, BT __

Re: [aqm] [tsvwg] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-07 Thread Bob Briscoe
avoid impairment, whereas ECN is solely a signal not an impairment, so there is no harm triggering it earlier. Cheers, Piers On 5 Nov 2013, at 18:41, Bob Briscoe wrote: > Piers, > > I tried to state exactly how ECN can benefit (2nd para of intro below), rather than make overblown claims.

Re: [aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-06 Thread Bob Briscoe
/2013 10:59 AM, Bob Briscoe wrote: Joe, I envisage that a very brief standards track doc that explicitly UPDATES the relevant IETF tunnel specs will be written, and it will refer to this doc for rationale. Tunnels need to handle ingress/egress translation of all signals in the header. This

Re: [aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-05 Thread Bob Briscoe
create it. - Alan Kay Privacy matters! We know from recent events that people are using our services to speak in defiance of unjust governments. We treat privacy and security as matters of life and death, because for some users, they are. On Mon, Nov 4, 2013 at 2:03 PM, Bob Briscoe

Re: [aqm] [tsvwg] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-05 Thread Bob Briscoe
clearly useful work. One thing that could do with clarification in the Introduction is that ECN - by itself - doesn't necessarily lead to low loss and delay - it should be made clear that it reflects the marking approach of the underlying scheme/AQM. Piers On 4 Nov 2013, at 22:03, Bo

Re: [aqm] [Bloat] [iccrg] AQM deployment status?

2013-11-04 Thread Bob Briscoe
_ts.xml&productDetail=products/mpls.xml>specification). Bob ____ Bob Briscoe, BT ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm

Re: [aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-04 Thread Bob Briscoe
. :) Bob Willing to comment and review, at least. On 5 November 2013 09:03, Bob Briscoe <<mailto:bob.bris...@bt.com>bob.bris...@bt.com> wrote: Folks, Pls respond if you support this being adopted as a work-group item in the IETF transport services w-g (tsvwg). The WG chairs ne

Re: [aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-04 Thread Bob Briscoe
Fred, At 22:39 04/11/2013, Fred Baker (fred) wrote: On Nov 4, 2013, at 2:03 PM, Bob Briscoe wrote: > Folks, > > Pls respond if you support this being adopted as a work-group item in the IETF transport services w-g (tsvwg). The WG chairs need visibility of interest. And don

[aqm] Who supports tsvwg adoption of adding ECN to L2 or tunnel protocols?

2013-11-04 Thread Bob Briscoe
between new lower layer congestion notification mechanisms, whether specified by the IETF or other standards bodies. [Cross-posting tsvwg & aqm, just in case] Bob Briscoe, also for co-authors Pat Thaler and John Kaippallimalil _____

Re: [aqm] [tsvwg] Immediate and Explicit Congestion Notification

2013-10-28 Thread Bob Briscoe
t's what we're doing. On Sun, Oct 27, 2013 at 6:36 PM, Bob Briscoe wrote: > John, inline... > > At 12:16 26/10/2013, John Leslie wrote: >> >> Bob Briscoe wrote: >> > >> > Exec summary >> > * Early tests show promise that we may have

Re: [aqm] [tsvwg] Immediate and Explicit Congestion Notification

2013-10-27 Thread Bob Briscoe
John, inline... At 12:16 26/10/2013, John Leslie wrote: Bob Briscoe wrote: > > Exec summary > * Early tests show promise that we may have found a way to make the > ultra-low queuing delay of data centre TCP incrementally deployable > on the public Internet > * For rtcweb,

Re: [aqm] Immediate and Explicit Congestion Notification (was: Guidelines for Adding Congestion Notification to Protocols that Encapsulate IP)

2013-10-25 Thread Bob Briscoe
Mat, At 11:56 22/10/2013, Matthew Ford wrote: On 22 Oct 2013, at 00:40, Bob Briscoe wrote: > There's more to it - I've asked to present the whole story in Vancouver. Cool, looking forward to it. I'll prime the question pump now if I may: Does the transport need to know th

[aqm] Immediate and Explicit Congestion Notification (was: Guidelines for Adding Congestion Notification to Protocols that Encapsulate IP)

2013-10-21 Thread Bob Briscoe
:35 15/10/2013, Dave Taht wrote: It is my general assumption that membership in the aqm wg is a subset of tsvwg, but in case it isn't... -- Forwarded message -- From: Bob Briscoe Date: Tue, Sep 17, 2013 at 5:33 AM Subject: [tsvwg] Guidelines for Adding Congestion Notificati

Re: [aqm] [iccrg] [Bloat] AQM deployment status?

2013-09-28 Thread Bob Briscoe
ps://www.ietf.org/mailman/listinfo/aqm ____________ Bob Briscoe, BT ___ aqm mailing list aqm@ietf.org https://www.ietf.org/mailman/listinfo/aqm