From taixuanyueshi@gmail.com Mon May 10 00:27:51 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 67D3028C1A6 for ; Mon, 10 May 2010 00:27:51 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 2.452 X-Spam-Level: ** X-Spam-Status: No, score=2.452 tagged_above=-999 required=5 tests=[BAYES_50=0.001, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GaiCeHBtVZnf for ; Mon, 10 May 2010 00:27:47 -0700 (PDT) Received: from mail-gw0-f53.google.com (mail-gw0-f53.google.com [74.125.83.53]) by core3.amsl.com (Postfix) with ESMTP id 7C83D28C1A9 for ; Mon, 10 May 2010 00:24:02 -0700 (PDT) Received: by gwb17 with SMTP id 17so1487602gwb.40 for ; Mon, 10 May 2010 00:23:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:from:date :message-id:subject:to:content-type; bh=iehpLlZOOsSd377a8oNHwFKZ9LtVDalhJcB8RpEaLjs=; b=pbJ84mosSIMRa4wHE/ok5Q1XJ6C4dspOd8ge1Ncc3jy3umSF75oGOdF0WK5c7nW/B5 gYEH7JY5hL2IkZr0BNKDY0K8TOVw7VyHj9PuzFRe3UZkRdg64V+uIidM/YOY5EV5nmgS DD1Ha8Vj36ZY+NmRxjY9HwWvDnk/GTvWuRXVg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; b=oBgLTNjjXo0WGDF18gEPVu3CTeoSpgyB003aADLjCMnfmnS8fn48Px31nLtnNrbHyc oTGYPPlFV10nd9zLfb8Z2dkiCzlMlEefYg3Q3pcZv4HYDP2fbwM8VJVZx5qrkO4OHfsy m0BR4PnpMnqpPBfhZU8Edy6BTrUzN2VRB+xuw= Received: by 10.231.156.196 with SMTP id y4mr2014445ibw.40.1273476230382; Mon, 10 May 2010 00:23:50 -0700 (PDT) MIME-Version: 1.0 Received: by 10.231.34.132 with HTTP; Mon, 10 May 2010 00:23:30 -0700 (PDT) From: xuan tai Date: Mon, 10 May 2010 15:23:30 +0800 Message-ID: To: ppsp@core3.amsl.com Content-Type: multipart/alternative; boundary=00504501586f57869a0486384a5d Subject: [ppsp] A Question about the architecture of P2P CDN based content sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 May 2010 07:27:51 -0000 --00504501586f57869a0486384a5d Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: quoted-printable Dear Everyone: I have a question when I was reading a draft about PPSP named *=A1=B0draft-li-ppsp-p2p-cdn-00=A1=B1(A P2P CDN based Content Sharing System using PPSP and RELOAD)*, and welcome everybody to join me to discuss the question as follows: *Background:* In the architecture of P2P CDN based content sharing system, there are thre= e kinds of participators: content/service provider, CDN provider and user; The CDN provider provides tracker overlay, storage overlay and cachers; The storage overlay acts as storage cloud providing the services of storing massive content safely and reliably. Cachers are deployed near CSCs, and cache the hot contents for CSCs. *The problem is*: *Is it necessary to design this kind of functions: =A1=B0storage overlay=A1= =B1?* In my opinion, content provider acts as the content source, and it must be very safe and reliable, while cachers store some hot contents and deliver them to users very quickly, therefore there is no need to design a function entity =A1=B0storage overlay=A1=B1; and in common knowledge, the architectu= re of CDN systems includes no =A1=B0storage overlay=A1=B1 providing this kind of func= tions. *PS: * In the DECADE proposed by Huawei, every UE in the P2P Systems has its own =A1=B0storage=A1=B1 which has the same name but different functions with th= e =A1=B0storage overlay=A1=B1 in this draft .The =A1=B0storage=A1=B1 in DECADE provides oth= er UEs to download the UE=A1=AFs data when the UE is offline. --=20 Regards, =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Tele= communications (BUPT) =CC=A8=E8=AF / Tai Xuan e-mail: taixuanyueshi@gmail.com mobile:+86135-8176-2082 --00504501586f57869a0486384a5d Content-Type: text/html; charset=GB2312 Content-Transfer-Encoding: quoted-printable

Dear Everyone:

I have a question when I was reading a draft about PPSP named “draft-li-ppsp-p2p-cdn-00”(A P2= P CDN based Content Sharing System using PPSP and RELOAD), and welc= ome everybody to join me to discuss the question as follows:<= /span>

 = ;

Background:

In the architecture of P2P CDN based content sharing system, there are thr= ee kinds of participators: content/service provider, CDN provider and user;=

The CDN provider provides tracker overlay, storage overlay and cachers;

The storage overlay acts as storage cloud p= roviding the services of storing massive content safely and reliably= . Cachers are deployed near CSCs, and cache the hot contents for CSCs.

 = ;

The problem is:

Is it necessary to design this k= ind of functions: “storage overlay”?

In my opinion, content provider acts as the content source, and it must be= very safe and reliable, while cachers store some hot contents and deliver = them to users very quickly, therefore there is no need to design a function= entity “storage overlay”; and in common knowledge, the architecture of CDN systems = includes no “storage overlay” providing this kind of functions.=

 = ;

PS:

In the DECADE proposed by Huawei, every UE in the P2P Systems has its own = “storage” which has the same name but different functions with = the “storage overlay” in this draft .The “storage” = in DECADE provides other UEs to download the UE’s data when the UE is= offline.



--
Regards,

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3= =D1=A7 / Beijing University of Posts and Telecommunications (BUPT)
=CC= =A8=E8=AF / Tai Xuan
e-mail: = taixuanyueshi@gmail.com
mobile:+86135-8176-2082
--00504501586f57869a0486384a5d-- From li.lichun1@zte.com.cn Fri May 14 01:53:15 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 45D7C3A6A86 for ; Fri, 14 May 2010 01:53:15 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -95.035 X-Spam-Level: X-Spam-Status: No, score=-95.035 tagged_above=-999 required=5 tests=[BAYES_50=0.001, HTML_MESSAGE=0.001, MIME_BASE64_TEXT=1.753, MIME_CHARSET_FARAWAY=2.45, RCVD_DOUBLE_IP_LOOSE=0.76, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JEiCRmz7Yw10 for ; Fri, 14 May 2010 01:53:14 -0700 (PDT) Received: from mx7.zte.com.cn (mx7.zte.com.cn [202.103.147.169]) by core3.amsl.com (Postfix) with ESMTP id 03FED3A6A83 for ; Fri, 14 May 2010 01:53:08 -0700 (PDT) Received: from [10.30.3.19] by [192.168.168.15] with StormMail ESMTP id 6793.3655956928; Fri, 14 May 2010 16:52:55 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse2.zte.com.cn with ESMTP id o4E8qlKK093797; Fri, 14 May 2010 16:52:48 +0800 (CST) (envelope-from li.lichun1@zte.com.cn) In-Reply-To: To: xuan tai MIME-Version: 1.0 X-Mailer: Lotus Notes Release 6.5.6 March 06, 2007 Message-ID: From: li.lichun1@zte.com.cn Date: Fri, 14 May 2010 16:52:18 +0800 X-MIMETrack: Serialize by Router on notes_smtp/zte_ltd(Release 6.5.4|March 27, 2005) at 2010-05-14 16:52:37, Serialize complete at 2010-05-14 16:52:37 Content-Type: multipart/alternative; boundary="=_alternative 0030F00848257723_=" X-MAIL: mse2.zte.com.cn o4E8qlKK093797 Cc: ppsp@core3.amsl.com, ppsp-bounces@ietf.org Subject: Re: [ppsp] A Question about the architecture of P2P CDN based content sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol 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(PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 3.451 X-Spam-Level: *** X-Spam-Status: No, score=3.451 tagged_above=-999 required=5 tests=[AWL=0.999, BAYES_50=0.001, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UmAB3A0XCE9y for ; Sun, 16 May 2010 23:58:05 -0700 (PDT) Received: from mail-iw0-f181.google.com (mail-iw0-f181.google.com [209.85.214.181]) by core3.amsl.com (Postfix) with ESMTP id 8CF7D3A63EC for ; Sun, 16 May 2010 23:58:05 -0700 (PDT) Received: by iwn9 with SMTP id 9so137317iwn.40 for ; Sun, 16 May 2010 23:57:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:in-reply-to :references:from:date:message-id:subject:to:cc:content-type; bh=N5aPr+nzLA7KSmRhjZsE8Jy33qk3HAmKZ1bjO7ifvNM=; b=M0W4DtLId6qfYs7IcNPr5/uWEDL/iqGuTDs36P8JBG0Etcb8A8fbYR7spDfX1n4j8a zGMNlLF0bsHAo6E/UHXp7dCG7rleSSb/wqNMWRYs8TnK6oVM8q9wlZ6bu3NLpnuNvZx+ K0JNNdgliFdB8+xaLEG9ARNWGMrvkTiCA5pS0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; b=vu18wGsTrMhHUcboqvu33SgTsJljA0zPoa1AH72Yk+fWRxraFG+lFjNFmkvzY0hgae Vs6aUZx5/enF/oLwlfJmq/VuEoh4SmVRm97lw8/EolFFkeGABIE5PWWyEGXv4hlwxn/6 +mlxv8L9AtlFrxFSEKnwEyOkq0Dz0qyBpT+XQ= Received: by 10.231.184.1 with SMTP id ci1mr16094ibb.39.1274079477351; Sun, 16 May 2010 23:57:57 -0700 (PDT) MIME-Version: 1.0 Received: by 10.231.34.132 with HTTP; Sun, 16 May 2010 23:57:37 -0700 (PDT) In-Reply-To: References: From: xuan tai Date: Mon, 17 May 2010 14:57:37 +0800 Message-ID: To: li.lichun1@zte.com.cn Content-Type: multipart/alternative; boundary=0016367b6f7aa9c4a30486c4be9b Cc: ppsp@core3.amsl.com, ppsp-bounces@ietf.org Subject: Re: [ppsp] A Question about the architecture of P2P CDN based content sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 06:58:12 -0000 --0016367b6f7aa9c4a30486c4be9b Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: quoted-printable Hi lichun Thanks for your reply for "A Qustion about" the architecture of P2P CDN based content sharing. According to your answer, I still doubt that, could this kind of function such as "persistent storage service" be provided by content provider ,but not storage overlay? Can you give more detailed explanation? Thank you very much. =D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:52=A3=AC =D0=B4=B5=C0=A3=BA > > Hi Xuan > Thanks for your comments. > With cachers, content source doesn't need to be very powerful, doesn't ne= ed > to have very wide bandwidth. Analogously, with storage overlay, content > source doesn't need to be very reliable. > Using storage overlay's persistent storage service, content/service > provider's can save the cost to deploy and maintain a very reliable stora= ge > system. > Many CDN providers provide persistent storage service. In my opinion, > persistent storage can be viewed as an optional function of CDN or a CDN > related function. > > BR > Lichun > > > > *xuan tai * > =B7=A2=BC=FE=C8=CB: ppsp-bounces@ietf.org > > 2010-05-10 15:23 > =CA=D5=BC=FE=C8=CB > ppsp@core3.amsl.com > =B3=AD=CB=CD > =D6=F7=CC=E2 > [ppsp] A Question about the architecture of P2P CDN based content > sharing > > > > > Dear Everyone: > I have a question when I was reading a draft about PPSP named *=A1=B0draf= t-li-ppsp-p2p-cdn-00=A1=B1(A > P2P CDN based Content Sharing System using PPSP and RELOAD)*, and welcome > everybody to join me to discuss the question as follows: > > *Background:* > In the architecture of P2P CDN based content sharing system, there are > three kinds of participators: content/service provider, CDN provider and > user; > The CDN provider provides tracker overlay, storage overlay and cachers; > The storage overlay acts as storage cloud providing the services of > storing massive content safely and reliably. Cachers are deployed near > CSCs, and cache the hot contents for CSCs. > > *The problem is*: > *Is it necessary to design this kind of functions: =A1=B0storage overlay= =A1=B1?* > In my opinion, content provider acts as the content source, and it must b= e > very safe and reliable, while cachers store some hot contents and deliver > them to users very quickly, therefore there is no need to design a functi= on > entity =A1=B0storage overlay=A1=B1; and in common knowledge, the architec= ture of CDN > systems includes no =A1=B0storage overlay=A1=B1 providing this kind of fu= nctions. > > *PS: * > In the DECADE proposed by Huawei, every UE in the P2P Systems has its own > =A1=B0storage=A1=B1 which has the same name but different functions with = the =A1=B0storage > overlay=A1=B1 in this draft .The =A1=B0storage=A1=B1 in DECADE provides o= ther UEs to > download the UE=A1=AFs data when the UE is offline. > > > > -- > Regards, > > =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Te= lecommunications (BUPT) > =CC=A8=E8=AF / Tai Xuan > e-mail: *taixuanyueshi@gmail.com* > > mobile:+86135-8176-2082_______________________________________________ > ppsp mailing list > ppsp@ietf.org > https://www.ietf.org/mailman/listinfo/ppsp > > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail i= s solely property of the sender's organization. This mail communication is = confidential. Recipients named above are obligated to maintain secrecy and = are not permitted to disclose the contents of this communication to others. > This email and any files transmitted with it are confidential and intende= d solely for the use of the individual or entity to whom they are addressed= . If you have received this email in error please notify the originator of = the message. Any views expressed in this message are those of the individua= l sender. > This message has been scanned for viruses and Spam by ZTE Anti-Spam syste= m. > > --=20 Regards, =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Tele= communications (BUPT) =CC=A8=E8=AF / Tai Xuan e-mail: taixuanyueshi@gmail.com mobile:+86135-8176-2082 --0016367b6f7aa9c4a30486c4be9b Content-Type: text/html; charset=GB2312 Content-Transfer-Encoding: quoted-printable
Hi lichun
Thanks for your reply for "A Qustion about" the architecture= of P2P CDN based content sharing.
According to your answer, I still doubt that, could this kind of funct= ion such as "persistent storage service" be provided by content p= rovider ,but not storage overlay? Can you give more detailed explanation?
Thank you very much.


 
=D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:5= 2=A3=AC <li.l= ichun1@zte.com.cn>=D0=B4=B5=C0=A3=BA

Hi Xuan
Thanks for= your comments.
With cachers, content source doesn'= ;t need to be very powerful, doesn't need to have very wide bandwidth. = Analogously, with storage overlay, content source doesn't need to be ve= ry reliable.
Using storage overlay's persistent= storage service, content/service provider's can save the cost to deplo= y and maintain a very reliable storage system.
Many CDN providers provide persistent storage serv= ice. In my opinion, persistent storage can be viewed as an optional functio= n of CDN or a CDN related function.

BR
Lichun


xuan tai <taixuanyueshi@gmai= l.com>
=B7=A2=BC= =FE=C8=CB:  ppsp-bounces@ietf.org=20

2010-05-10 15:23

=CA=D5=BC=FE=C8= =CB
ppsp@core3.amsl.com=20
=B3=AD=CB=CD
=D6=F7=CC=E2
[ppsp] A Question about the archit= ecture of P2P CDN based content        sharing




Dear Everyo= ne:
I have a question when I w= as reading a draft about PPSP named “draft-li-ppsp-p2p-cdn-00&r= dquo;(A P2P CDN based Content Sharing System using PPSP and RELOAD)= , and welcome everybody to join me to discuss the question as follows:
 
Background:
In the architecture of P2P CDN based content sharing system, there are th= ree kinds of participators: content/service provider, CDN provider and user= ;
The CDN provider provides tracker overlay= , storage overlay and cachers;
The storage overlay acts as storage cloud providing the services of storing massive conten= t safely and reliably. Cachers are= deployed near CSCs, and cache the hot contents for CSCs.
 
The problem is:
Is it necessary to design this kind of functions: “storage o= verlay”?
In my opinion, content provider acts as t= he content source, and it must be very safe and reliable, while cachers sto= re some hot contents and deliver them to users very quickly, therefore ther= e is no need to design a function entity “storage overlay”; and= in common knowledge, the architecture of CDN systems includes no “st= orage overlay” providing this kind of functions.
 
PS:
In the= DECADE proposed by Huawei, every UE in the P2P Systems has its own “= storage” which has the same name but different functions with the &ld= quo;storage overlay” in this draft .The “storage” in DECA= DE provides other UEs to download the UE’s data when the UE is offlin= e.



--
Regar= ds,

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Pos= ts and Telecommunications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com

mobile:+86135-8176-2082_______________________________________________
p= psp mailing list
ppsp= @ietf.org
ht= tps://www.ietf.org/mailman/listinfo/ppsp
 


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Regards,=

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts = and Telecommunications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com
mobile:+86135-8176-2082
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taixuanyueshi@gmail.com Mon May 17 00:40:13 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 0F1893A6962 for ; Mon, 17 May 2010 00:40:13 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 2.952 X-Spam-Level: ** X-Spam-Status: No, score=2.952 tagged_above=-999 required=5 tests=[AWL=0.500, BAYES_50=0.001, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id I4VohUT4R1YC for ; Mon, 17 May 2010 00:40:03 -0700 (PDT) Received: from mail-iw0-f181.google.com (mail-iw0-f181.google.com [209.85.214.181]) by core3.amsl.com (Postfix) with ESMTP id 4C6FD3A68DB for ; Mon, 17 May 2010 00:40:01 -0700 (PDT) Received: by iwn9 with SMTP id 9so151509iwn.40 for ; Mon, 17 May 2010 00:39:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:in-reply-to :references:from:date:message-id:subject:to:cc:content-type; bh=oDdHCTZUrh1EC3sGWBRe0YBGfYZSYBxVmxqmZmhUw+s=; b=g1UhAI/sQfRqDFzLEZ77Ci3ylYCVNwG4+sQD8wwtmUiBWR5aunbVOVsoTJMo85pCsn BsVzCEJHmJ3mK9jKoRX9xbhHA+x/bZNdfYqiuCfo2z4XRWWAIC9J6x7ZmQGXwlxa7SgT 5bGidIZjyW+IJYX8gL+DxeaL78vQ748ZwMoLU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; b=joW/cg6hYekm9pRPfYKvhH1x2wLek1HAkWI6VNHklQxrXNQCmGk5jYsUZVsFV0euV2 bPXgguahlLEvE6FZAK6Cs48gfwbRzaUhoh6hV1Jcig0Ox4Zls+ff5yV2U/P2luWjDcKt Jf0uNj86npUdllMMUbM0It0xgwaaJniVkC/hU= Received: by 10.231.167.208 with SMTP id r16mr25851iby.47.1274081993182; Mon, 17 May 2010 00:39:53 -0700 (PDT) MIME-Version: 1.0 Received: by 10.231.34.132 with HTTP; Mon, 17 May 2010 00:39:33 -0700 (PDT) In-Reply-To: References: From: xuan tai Date: Mon, 17 May 2010 15:39:33 +0800 Message-ID: To: li.lichun1@zte.com.cn Content-Type: multipart/alternative; boundary=005045015a599e4e910486c55452 Cc: ppsp@core3.amsl.com, ppsp-bounces@ietf.org Subject: Re: [ppsp] A Question about the architecture of P2P CDN based content sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 07:40:13 -0000 --005045015a599e4e910486c55452 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: quoted-printable OK, I understand it now, at some extent, storage overlay can liberate content providers from keeping online and persistent all the time, thank yo= u very much! =D4=DA 2010=C4=EA5=D4=C217=C8=D5 =CF=C2=CE=E73:21=A3=AC =D0=B4=B5=C0=A3=BA > > Yes, a content provider can deploy its own persistent storage system, and > doesn't use the persistent storage service provided by CDN provider. > Many CDN providers provide the persistent storage service. I think small > content/service providers would like the persistent storage service. With > this service, content/service providers don't need a very reliable conten= t > source server, and don't need to keep the server online 24/7. > > > > *xuan tai * > > 2010-05-17 14:57 > =CA=D5=BC=FE=C8=CB > li.lichun1@zte.com.cn > =B3=AD=CB=CD > ppsp@core3.amsl.com, ppsp-bounces@ietf.org > =D6=F7=CC=E2 > Re: [ppsp] A Question about the architecture of P2P CDN based content > sharing > > > > > Hi lichun > Thanks for your reply for "A Qustion about" the architecture of P2P CDN > based content sharing. > According to your answer, I still doubt that, could this kind of function > such as "persistent storage service" be provided by content provider ,but > not storage overlay? Can you give more detailed explanation? > Thank you very much. > > > > =D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:52=A3=AC <*li.lichun1@zte.= com.cn* >=D0=B4=B5=C0=A3=BA > > Hi Xuan > Thanks for your comments. > With cachers, content source doesn't need to be very powerful, doesn't ne= ed > to have very wide bandwidth. Analogously, with storage overlay, content > source doesn't need to be very reliable. > Using storage overlay's persistent storage service, content/service > provider's can save the cost to deploy and maintain a very reliable stora= ge > system. > Many CDN providers provide persistent storage service. In my opinion, > persistent storage can be viewed as an optional function of CDN or a CDN > related function. > > BR > Lichun > > > *xuan tai <**taixuanyueshi@gmail.com* *>* > =B7=A2=BC=FE=C8=CB: *ppsp-bounces@ietf.org* > > 2010-05-10 15:23 > > =CA=D5=BC=FE=C8=CB > *ppsp@core3.amsl.com* > =B3=AD=CB=CD > =D6=F7=CC=E2 > [ppsp] A Question about the architecture of P2P CDN based content > sharing > > > > > > Dear Everyone: > I have a question when I was reading a draft about PPSP named *=A1=B0draf= t-li-ppsp-p2p-cdn-00=A1=B1(A > P2P CDN based Content Sharing System using PPSP and RELOAD)*, and welcome > everybody to join me to discuss the question as follows: > * > Background:* > In the architecture of P2P CDN based content sharing system, there are > three kinds of participators: content/service provider, CDN provider and > user; > The CDN provider provides tracker overlay, storage overlay and cachers; > The storage overlay acts as storage cloud providing the services of > storing massive content safely and reliably. Cachers are deployed near > CSCs, and cache the hot contents for CSCs. > * > The problem is*: * > Is it necessary to design this kind of functions: =A1=B0storage overlay= =A1=B1?* > In my opinion, content provider acts as the content source, and it must b= e > very safe and reliable, while cachers store some hot contents and deliver > them to users very quickly, therefore there is no need to design a functi= on > entity =A1=B0storage overlay=A1=B1; and in common knowledge, the architec= ture of CDN > systems includes no =A1=B0storage overlay=A1=B1 providing this kind of fu= nctions. > * > PS: * > In the DECADE proposed by Huawei, every UE in the P2P Systems has its own > =A1=B0storage=A1=B1 which has the same name but different functions with = the =A1=B0storage > overlay=A1=B1 in this draft .The =A1=B0storage=A1=B1 in DECADE provides o= ther UEs to > download the UE=A1=AFs data when the UE is offline. > > > > -- > Regards, > > =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Te= lecommunications (BUPT) > =CC=A8=E8=AF / Tai Xuan > e-mail: *taixuanyueshi@gmail.com* > > mobile:+86135-8176-2082_______________________________________________ > ppsp mailing list* > **ppsp@ietf.org* * > **https://www.ietf.org/mailman/listinfo/ppsp* > > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail i= s > solely property of the sender's organization. This mail communication is > confidential. Recipients named above are obligated to maintain secrecy an= d > are not permitted to disclose the contents of this communication to other= s. > This email and any files transmitted with it are confidential and intende= d > solely for the use of the individual or entity to whom they are addressed= . > If you have received this email in error please notify the originator of = the > message. Any views expressed in this message are those of the individual > sender. > This message has been scanned for viruses and Spam by ZTE Anti-Spam syste= m. > > > > > -- > Regards, > > =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Te= lecommunications (BUPT) > =CC=A8=E8=AF / Tai Xuan > e-mail: *taixuanyueshi@gmail.com* > mobile:+86135-8176-2082 > > > -------------------------------------------------------- > ZTE Information Security Notice: The information contained in this mail i= s solely property of the sender's organization. This mail communication is = confidential. Recipients named above are obligated to maintain secrecy and = are not permitted to disclose the contents of this communication to others. > This email and any files transmitted with it are confidential and intende= d solely for the use of the individual or entity to whom they are addressed= . If you have received this email in error please notify the originator of = the message. Any views expressed in this message are those of the individua= l sender. > This message has been scanned for viruses and Spam by ZTE Anti-Spam syste= m. > > --=20 Regards, =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Tele= communications (BUPT) =CC=A8=E8=AF / Tai Xuan e-mail: taixuanyueshi@gmail.com mobile:+86135-8176-2082 --005045015a599e4e910486c55452 Content-Type: text/html; charset=GB2312 Content-Transfer-Encoding: quoted-printable OK, I understand it now, at some extent, storage overlay can liberate conte= nt providers from keeping online and persistent all the time, thank you ver= y much!

=D4=DA 2010=C4=EA5=D4=C217=C8=D5 =CF=C2=CE=E73:2= 1=A3=AC <li.l= ichun1@zte.com.cn>=D0=B4=B5=C0=A3=BA

Yes, a content provider can deploy its own persistent storage syst= em, and doesn't use the persistent storage service provided by CDN prov= ider.
Many CDN providers provide= the persistent storage service. I think small content/service providers wo= uld like the persistent storage service. With this service, content/service= providers don't need a very reliable content source server, and don= 9;t need to keep the server online 24/7.



xuan tai <taixuanyueshi@gmai= l.com>

2010-05-17 14:57

=CA=D5=BC=FE=C8= =CB
li.lichun1@zte.com.cn
=B3=AD=CB=CD
ppsp@core3.amsl.com, ppsp-bounces@ietf.org=20
=D6=F7=CC=E2
Re: [ppsp] A Question about the ar= chitecture of P2P CDN based content         sharing




Hi lichun
T= hanks for your reply for "A Qustion about" the architecture of P2= P CDN based content sharing.
According to your answer, I still doub= t that, could this kind of function such as "persistent storage servic= e" be provided by content provider ,but not storage overlay? Can you g= ive more detailed explanation?
Thank you very much.



=D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:52=A3=AC <li.lichun1@zte.com.cn>=D0=B4=B5=C0=A3=BA
Hi Xuan
Thanks fo= r your comments.
With cachers, content source doesn't need to be very powerful, doesn= 9;t need to have very wide bandwidth. Analogously, with storage overlay, co= ntent source doesn't need to be very reliable.
Using storage overla= y's persistent storage service, content/service provider's can save= the cost to deploy and maintain a very reliable storage system.
Many CDN providers provide persistent storage service. In my opinion, persi= stent storage can be viewed as an optional function of CDN or a CDN related= function.

BR
Lichun


xuan tai <= taixuanyueshi@gmail.com<= /u>>
=B7=A2=BC=FE=C8=CB:  pps= p-bounces@ietf.org

2010-05-10 15:23


=CA=D5=BC=FE=C8= =CB
= ppsp@core3.amsl.com<= /u>
=B3=AD=CB=CD
=D6=F7=CC=E2
[ppsp] A Question about the archit= ecture of P2P CDN based content        sharing




Dear Everyone:
I have a question when I was= reading a draft about PPSP named “draft-li-ppsp-p2p-cdn-00&rdq= uo;(A P2P CDN based Content Sharing System using PPSP and RELOAD), = and welcome everybody to join me to discuss the question as follows:=
 
Background:
In the architecture of= P2P CDN based content sharing system, there are three kinds of participato= rs: content/service provider, CDN provider and user;
The CDN provider provides tracker overlay, storage overlay and cachers;
The storage overlay acts as storage cloud providing the services of storing mass= ive content safely and reliably. C= achers are deployed near CSCs, and cache the hot contents for CSCs.
 
The problem is:
Is it necessary= to design this kind of functions: “storage overlay”?
In my opinion, content provider acts as the content source, and it must be = very safe and reliable, while cachers store some hot contents and deliver t= hem to users very quickly, therefore there is no need to design a function = entity “storage overlay”; and in common knowledge, the architec= ture of CDN systems includes no “storage overlay” providing thi= s kind of functions.
 
PS:
In the DECADE proposed by Huawei, every = UE in the P2P Systems has its own “storage” which has the same = name but different functions with the “storage overlay” in this= draft .The “storage” in DECADE provides other UEs to download = the UE’s data when the UE is offline.



--
Regards,

=B1= =B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Telecom= munications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com

mobile:+86135-8176-2082= _______________________________________________
ppsp ma= iling list
ppsp@ietf.org
https://www.ietf.org/m= ailman/listinfo/ppsp=20


-----------------------------------------------= ---------
ZTE Information Security Notice: The information contained in = this mail is solely property of the sender's organization. This mail co= mmunication is confidential. Recipients named above are obligated to mainta= in secrecy and are not permitted to disclose the contents of this communica= tion to others.
This email and any files transmitted with it are confidential and intended = solely for the use of the individual or entity to whom they are addressed. = If you have received this email in error please notify the originator of th= e message. Any views expressed in this message are those of the individual = sender.
This message has been scanned for viruses and Spam by ZTE Anti-Spam system.=




--
Regards,

= =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Tele= communications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com
mobile:+86135-8176-2082=20 


--------------------------------------------------------
ZTE Information Security Notice: The information&n=
bsp;contained in this mail is solely property=
 of the sender's organization. This mail&=
nbsp;communication is confidential. Recipients named&nb=
sp;above are obligated to maintain secrecy an=
d are not permitted to disclose the cont=
ents of this communication to others.
This email and any files transmitted with&nbs=
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 the use of the individual or entity&nbs=
p;to whom they are addressed. If you hav=
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tify the originator of the message. Any =
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p;of the individual sender.
This message has been scanned for viruses&nbs=
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-- =
Regards,

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing Universi= ty of Posts and Telecommunications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-m= ail: taixuanyueshi@gmail.com=
mobile:+86135-8176-2082
--005045015a599e4e910486c55452-- From melodysong@huawei.com Mon May 17 01:15:24 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id A25513A6A18 for ; Mon, 17 May 2010 01:15:24 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 2.987 X-Spam-Level: ** X-Spam-Status: No, score=2.987 tagged_above=-999 required=5 tests=[AWL=-1.569, BAYES_50=0.001, FH_RELAY_NODNS=1.451, HELO_MISMATCH_COM=0.553, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45, RDNS_NONE=0.1] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wUUC8KXqE1TM for ; Mon, 17 May 2010 01:15:23 -0700 (PDT) Received: from szxga03-in.huawei.com (unknown [119.145.14.66]) by core3.amsl.com (Postfix) with ESMTP id ADFD03A6A1E for ; Mon, 17 May 2010 01:15:02 -0700 (PDT) Received: from huawei.com (szxga03-in [172.24.2.9]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0L2K00HKS1HAJA@szxga03-in.huawei.com> for ppsp@core3.amsl.com; Mon, 17 May 2010 16:12:47 +0800 (CST) Received: from huawei.com ([172.24.2.119]) by szxga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0L2K007IE1HA6C@szxga03-in.huawei.com> for ppsp@core3.amsl.com; Mon, 17 May 2010 16:12:46 +0800 (CST) Received: from s64081a ([10.138.84.48]) by szxml04-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPA id <0L2K003XB1H3P3@szxml04-in.huawei.com> for ppsp@core3.amsl.com; Mon, 17 May 2010 16:12:43 +0800 (CST) Date: Mon, 17 May 2010 16:12:39 +0800 From: Song Haibin In-reply-to: To: li.lichun1@zte.com.cn, 'xuan tai' Message-id: <01b301caf598$b7a246a0$26e6d3e0$@com> MIME-version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Content-type: multipart/alternative; boundary="Boundary_(ID_y7iO0dhZJ6PD8YJB6LHVUw)" Content-language: zh-cn Thread-index: Acr1km05OQoMB9CWTNeLoM2RkwbBzwAAeBPQ References: Cc: ppsp@core3.amsl.com, ppsp-bounces@ietf.org Subject: Re: [ppsp] A Question about the architecture of P2P CDN based content sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 08:15:24 -0000 This is a multipart message in MIME format. --Boundary_(ID_y7iO0dhZJ6PD8YJB6LHVUw) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: quoted-printable >>The =A1=B0storage=A1=B1 in DECADE provides other UEs to download the = UE=A1=AFs data when the UE is offline.=20 Sorry to chime in. Right. And the in-network storage does not have to support various application layer protocols. The DECADE client can also control the network resources used by the in-network storage for content distribution. =20 And in addition, as far as I can understand, PPSP is NOT trying to = redesign CDN architecture to provide something like =A1=B0persistent = storage=A1=B1. So what is the purpose of this document? =20 By the way, why don=A1=AFt you send the email to ppsp@ietf.org? =20 Xie Xie, Haibin =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of li.lichun1@zte.com.cn Sent: Monday, May 17, 2010 3:22 PM To: xuan tai Cc: ppsp@core3.amsl.com; ppsp-bounces@ietf.org Subject: Re: [ppsp] A Question about the architecture of P2P CDN based content sharing =20 Yes, a content provider can deploy its own persistent storage system, = and doesn't use the persistent storage service provided by CDN provider. Many CDN providers provide the persistent storage service. I think small content/service providers would like the persistent storage service. = With this service, content/service providers don't need a very reliable = content source server, and don't need to keep the server online 24/7.=20 xuan tai =20 2010-05-17 14:57=20 =CA=D5=BC=FE=C8=CB li.lichun1@zte.com.cn=20 =B3=AD=CB=CD ppsp@core3.amsl.com, ppsp-bounces@ietf.org=20 =D6=F7=CC=E2 Re: [ppsp] A Question about the architecture of P2P CDN based content sharing =20 =09 Hi lichun=20 Thanks for your reply for "A Qustion about" the architecture of P2P CDN based content sharing.=20 According to your answer, I still doubt that, could this kind of = function such as "persistent storage service" be provided by content provider = ,but not storage overlay? Can you give more detailed explanation?=20 Thank you very much.=20 =D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:52=A3=AC < = li.lichun1@zte. com.cn>=D0=B4=B5=C0=A3=BA=20 Hi Xuan=20 Thanks for your comments.=20 With cachers, content source doesn't need to be very powerful, doesn't = need to have very wide bandwidth. Analogously, with storage overlay, content source doesn't need to be very reliable.=20 Using storage overlay's persistent storage service, content/service provider's can save the cost to deploy and maintain a very reliable = storage system.=20 Many CDN providers provide persistent storage service. In my opinion, persistent storage can be viewed as an optional function of CDN or a CDN related function. BR=20 Lichun=20 xuan tai < taixuanyueshi@gmail.com>=20 =B7=A2=BC=FE=C8=CB: = ppsp-bounces@ietf.org=20 2010-05-10 15:23=20 =20 =CA=D5=BC=FE=C8=CB ppsp@core3.amsl.com=20 =B3=AD=CB=CD =09 =D6=F7=CC=E2 [ppsp] A Question about the architecture of P2P CDN based content sharing =20 =09 =09 Dear Everyone:=20 I have a question when I was reading a draft about PPSP named =A1=B0draft-li-ppsp-p2p-cdn-00=A1=B1(A P2P CDN based Content Sharing = System using PPSP and RELOAD), and welcome everybody to join me to discuss the = question as follows:=20 =20 Background:=20 In the architecture of P2P CDN based content sharing system, there are = three kinds of participators: content/service provider, CDN provider and user; = The CDN provider provides tracker overlay, storage overlay and cachers;=20 The storage overlay acts as storage cloud providing the services of = storing massive content safely and reliably. Cachers are deployed near CSCs, and cache the hot contents for CSCs.=20 =20 The problem is:=20 Is it necessary to design this kind of functions: =A1=B0storage = overlay=A1=B1?=20 In my opinion, content provider acts as the content source, and it must = be very safe and reliable, while cachers store some hot contents and = deliver them to users very quickly, therefore there is no need to design a = function entity =A1=B0storage overlay=A1=B1; and in common knowledge, the = architecture of CDN systems includes no =A1=B0storage overlay=A1=B1 providing this kind of = functions.=20 =20 PS:=20 In the DECADE proposed by Huawei, every UE in the P2P Systems has its = own =A1=B0storage=A1=B1 which has the same name but different functions with = the =A1=B0storage overlay=A1=B1 in this draft .The =A1=B0storage=A1=B1 in = DECADE provides other UEs to download the UE=A1=AFs data when the UE is offline.=20 --=20 Regards, =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and = Telecommunications (BUPT) =CC=A8=E8=AF / Tai Xuan e-mail: taixuanyueshi@gmail.com=20 mobile:+86135-8176-2082_______________________________________________ ppsp mailing list ppsp@ietf.org https://www.ietf.org/mailman/listinfo/ppsp=20 --=20 Regards, =B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and = Telecommunications (BUPT) =CC=A8=E8=AF / Tai Xuan e-mail: taixuanyueshi@gmail.com mobile:+86135-8176-2082=20 =20 --Boundary_(ID_y7iO0dhZJ6PD8YJB6LHVUw) Content-type: text/html; charset=gb2312 Content-transfer-encoding: quoted-printable

>>The =A1=B0storage=A1=B1 in DECADE provides other UEs to download the = UE=A1=AFs data when the UE is offline.

Sorry to chime in. Right. And the in-network storage does = not have to support various application layer protocols. The DECADE client = can also control the network resources used by the in-network storage for content distribution.

 

And in addition, as far as I can understand, PPSP is NOT = trying to redesign CDN architecture to provide something like =A1=B0persistent = storage=A1=B1. So what is the purpose of this document?

 

By the way, why don=A1=AFt you send the email to = ppsp@ietf.org?

 

Xie Xie,
Haibin

 

From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = li.lichun1@zte.com.cn
Sent: Monday, May 17, 2010 3:22 PM
To: xuan tai
Cc: ppsp@core3.amsl.com; ppsp-bounces@ietf.org
Subject: Re: [ppsp] A Question about the architecture of P2P CDN = based content sharing

 


Yes, a content provider can deploy its own persistent storage system, and = doesn't use the persistent storage service provided by CDN provider.
Many CDN providers provide the persistent storage service. I think small content/service providers would like the persistent storage service. = With this service, content/service providers don't need a very reliable content = source server, and don't need to keep the server online 24/7.


xuan tai = <taixuanyueshi@gmail.com>

2010-05-17 14:57

=CA=D5=BC=FE=C8=CB

li.lichun1@zte.com.cn

=B3=AD=CB=CD

ppsp@core3.amsl.com, = ppsp-bounces@ietf.org

=D6=F7=CC=E2

Re: [ppsp] A Question about the architecture = of P2P CDN based content         sharing

 




Hi = lichun
Thanks for your reply for "A Qustion about" the architecture of P2P CDN = based content sharing.
According to your answer, I still doubt that, could this kind of function such as "persistent storage service" be provided by content provider = ,but not storage overlay? Can you give more detailed explanation?
Thank you very much.



=D4=DA 2010=C4=EA5=D4=C214=C8=D5 =CF=C2=CE=E74:52=A3=AC = <li.lichun1@zte.com.cn>=D0=B4=B5=C0=A3=BA<= span lang=3DEN-US>

Hi Xuan
Thanks for your comments.
With cachers, content source doesn't need to be very powerful, doesn't = need to have very wide bandwidth. Analogously, with storage overlay, content = source doesn't need to be very reliable.
Using storage overlay's persistent storage service, content/service = provider's can save the cost to deploy and maintain a very reliable storage = system.
Many CDN providers provide persistent storage service. In my opinion, persistent storage can be viewed as an optional function of CDN or a CDN related function.

BR =
Lichun

xuan tai <taixuanyueshi@= gmail.com>
=B7=A2=BC=FE=C8=CB: =  ppsp-bounces@i= etf.org

2010-05-10 15:23

 

=CA=D5=BC=FE=C8=CB

ppsp@core3.ams= l.com =

=B3=AD=CB=CD

=D6=F7=CC=E2

[ppsp] A Question about the architecture of = P2P CDN based content        sharing

 




Dear Everyone:
I have a question when I was reading a draft about PPSP named = =A1=B0draft-li-ppsp-p2p-cdn-00=A1=B1(A P2P CDN based Content Sharing System using PPSP and RELOAD), and welcome everybody to join me to discuss the question as = follows:
 
Background:
In the architecture of P2P CDN based content sharing system, there are = three kinds of participators: content/service provider, CDN provider and user; =
The CDN provider provides tracker overlay, storage overlay and = cachers;
The storage overlay acts as storage cloud providing the services of storing massive content safely and reliably. = Cachers are deployed near CSCs, and cache the hot contents for CSCs.
 
The problem is:
Is it necessary to design this kind of functions: =A1=B0storage = overlay=A1=B1?
In my opinion, content provider acts as the content source, and it must = be very safe and reliable, while cachers store some hot contents and deliver = them to users very quickly, therefore there is no need to design a function = entity =A1=B0storage overlay=A1=B1; and in common knowledge, the architecture = of CDN systems includes no =A1=B0storage overlay=A1=B1 providing this kind of = functions.
 
PS:
In the DECADE proposed by Huawei, every UE in the P2P Systems has its = own =A1=B0storage=A1=B1 which has the same name but different functions with = the =A1=B0storage overlay=A1=B1 in this draft .The =A1=B0storage=A1=B1 in DECADE provides = other UEs to download the UE=A1=AFs data when the UE is offline.



--
Regards,

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Telecommunications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com=

mobile:+86135-8176-2082______________________________________________= _
ppsp mailing list
ppsp@ietf.org
https://www.ietf.org/mailman/listinfo/ppsp


--
Regards,

=B1=B1=BE=A9=D3=CA=B5=E7=B4=F3=D1=A7 / Beijing University of Posts and Telecommunications (BUPT)
=CC=A8=E8=AF / Tai Xuan
e-mail: taixuanyueshi@gmail.com=
mobile:+86135-8176-2082

 

--Boundary_(ID_y7iO0dhZJ6PD8YJB6LHVUw)-- From zhangyunfei@chinamobile.com Mon May 17 01:28:16 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 108473A6A37 for ; Mon, 17 May 2010 01:28:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -93.585 X-Spam-Level: X-Spam-Status: No, score=-93.585 tagged_above=-999 required=5 tests=[AWL=-0.012, BAYES_50=0.001, HTML_MESSAGE=0.001, MIME_BASE64_TEXT=1.753, MIME_CHARSET_FARAWAY=2.45, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ffj66GpNwrBB for ; Mon, 17 May 2010 01:28:14 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id A2D523A69F2 for ; Mon, 17 May 2010 01:28:11 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.4.54]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2010051716272404-15824 ; Mon, 17 May 2010 16:27:24 +0800 Date: Mon, 17 May 2010 16:27:55 +0800 From: "zhangyunfei" To: "Song Haibin" , "li.lichun1@zte.com.cn" , "'xuan tai'" References: <01b301caf598$b7a246a0$26e6d3e0$@com> Message-ID: <201005171627553438267@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-17 16:27:24, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-17 16:28:04, Serialize complete at 2010-05-17 16:28:04 Content-Type: multipart/alternative; boundary="=====003_Dragon845331858440_=====" Cc: "ppsp@ietf.org" Subject: Re: [ppsp] A Question about the architecture of P2P CDNbasedcontent sharing X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 08:28:16 -0000 This is a multi-part message in MIME format. --=====003_Dragon845331858440_===== Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="gb2312" SSBndWVzcyBMaWNodW4ncyBkb2N1bWVudCBpcyB0byBzaG93IGEgQ0ROIHVzZSBjYXNlIHdpdGgg dGhlIHN1cHBvcnQgb2YgUFBTUC5IZXJlIFBQU1AgaXMgbm90IHNwZWNpZmljIGZvciBwZXJzaXN0 ZW50IHN0b3JhZ2UuUmF0aGVyIHRoaXMgaXMgYSBieXByb2R1Y3Qgd2hpY2ggY2FuIGJlIGNvbWJp bmVkIHdpdGggUFBTUCBmdW5jdGlvbmFsaXRpZXMuDQpUaGUgcmFpc2VkIHF1ZXN0aW9uIG9mIHN0 b3JhZ2UgZnVuY3Rpb25hbGl0eSBpbiBERUNBREUgaXMgYSBsaXR0bGUgZmFyIGZyb20gdGhlIGZv Y3VzLlRoZSBmb2N1cyBvZiBERUNBREUgaXMgbm90IHRvIGJ1aWxkIGluLW5ldHdvcmsgc3RvcmFn ZSBidXQgdG8gYnVpbGQgYW4gYWNjZXNzIGFuZCByZXNvdXJjZSBjb250cm9sIHByb3RvY29sIGNv bW11bmljYXRpbmcgd2l0aCB0aGVzZSBraW5kcyBvZiBpbi1uZXR3b3JrIHN0b3JhZ2UuDQoNCkJS 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J_CHICKENPOX_66=0.6, MIME_BASE64_TEXT=1.753, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gy1UEuTGKwAq for ; Mon, 17 May 2010 01:32:30 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id 4EAE53A6840 for ; Mon, 17 May 2010 01:32:29 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.4.54]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2010051716314460-15974 ; Mon, 17 May 2010 16:31:44 +0800 Date: Mon, 17 May 2010 16:32:16 +0800 From: "zhangyunfei" To: "ppsp@ietf.org" Message-ID: <201005171632159681677@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-17 16:31:44, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-17 16:32:21, Serialize complete at 2010-05-17 16:32:21 Content-Type: multipart/alternative; boundary="=====003_Dragon750677486104_=====" Subject: [ppsp] International ppsp workshop info X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 08:32:31 -0000 This is a multi-part message in MIME format. --=====003_Dragon750677486104_===== Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="gb2312" IERlYXIgYWxsLA0KICAgSSB3b3VsZCBsaWtlIHRvIHNoYXJlIHRoZSBpbmZvbXJhdGlvbiBvZiB0 aGUgSW50ZXJuYXRpb25hbCBQUFNQKFBlZXIgdG8gUGVlciBTdHJlYW1pbmcgUHJvdG9jb2wpIElu ZHVzdHJpYWwgYW5kIFN0YW5kYXJkcyBXb3Jrc2hvcCBpbiBCZWlqaW5nIHRvIGJlIGhvc3RlZCBi eSBDaGluYSBNb2JpbGUuVGhlIHdvcmtzaG9wIGlzIGluaXRpYWxseSBwbGFubmVkIHRvIGJlIGhl 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PTI+DQo8SFIgc3R5bGU9IldJRFRIOiAxMjJweDsgSEVJR0hUOiAycHgiIFNJWkU9Mj4NCjwvRk9O VD48L0RJVj4NCjxESVY+PEZPTlQgY29sb3I9I2MwYzBjMD48Rk9OVCBzaXplPTI+emhhbmd5dW5m ZWk8L0ZPTlQ+PC9ESVY+DQo8RElWPjxGT05UIHNpemU9Mj4yMDEwLTA1LTE3PC9GT05UPjwvRk9O VD48L0RJVj48L0ZPTlQ+PC9CT0RZPjwvSFRNTD4NCg== --=====003_Dragon750677486104_=====-- From fluffy@cisco.com Mon May 17 07:09:33 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 52AD83A6A2E for ; Mon, 17 May 2010 07:09:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -109.983 X-Spam-Level: X-Spam-Status: No, score=-109.983 tagged_above=-999 required=5 tests=[AWL=0.616, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Enk8mNvFAlv3 for ; Mon, 17 May 2010 07:09:32 -0700 (PDT) Received: from sj-iport-5.cisco.com (sj-iport-5.cisco.com [171.68.10.87]) by core3.amsl.com (Postfix) with ESMTP id CAF263A68CE for ; Mon, 17 May 2010 07:09:31 -0700 (PDT) Authentication-Results: sj-iport-5.cisco.com; dkim=neutral (message not signed) header.i=none X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: At4FAFzr8EurR7H+/2dsb2JhbACRf4wBcaM3mSyFEASDQA X-IronPort-AV: E=Sophos;i="4.53,247,1272844800"; d="scan'208";a="198361122" Received: from sj-core-2.cisco.com ([171.71.177.254]) by sj-iport-5.cisco.com with ESMTP; 17 May 2010 14:09:14 +0000 Received: from [192.168.4.177] (rcdn-fluffy-8711.cisco.com [10.99.9.18]) by sj-core-2.cisco.com (8.13.8/8.14.3) with ESMTP id o4HE9DXQ008436 for ; Mon, 17 May 2010 14:09:14 GMT Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: text/plain; charset=us-ascii Impp: xmpp:cullenfluffyjennings@jabber.org From: Cullen Jennings In-Reply-To: <01b301caf598$b7a246a0$26e6d3e0$@com> Date: Mon, 17 May 2010 08:09:13 -0600 Content-Transfer-Encoding: quoted-printable Message-Id: <9CFBE5D6-4E1D-42AC-A2E4-C684ED21A57A@cisco.com> References: <01b301caf598$b7a246a0$26e6d3e0$@com> To: ppsp@ietf.org X-Mailer: Apple Mail (2.1078) Subject: [ppsp] Request about email address to use for PPSP X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 May 2010 14:09:33 -0000 Hi All, Can everyone please try and use ppsp@ietf.org as the email to reach this = list. Some email has been using ppsp@core3.amsl.com. I'm sure this just = happened due to some reply along the way but it makes it hard for others = to later search and filter the email. I'd appreciate it if people could = use ppsp@ietf.org.=20 Thanks, Cullen From ietfdbh@comcast.net Tue May 18 09:31:02 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 3DE8A28C1F1 for ; Tue, 18 May 2010 09:31:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.336 X-Spam-Level: X-Spam-Status: No, score=-1.336 tagged_above=-999 required=5 tests=[AWL=0.862, BAYES_50=0.001, GB_I_INVITATION=-2, GB_I_LETTER=-2, HTML_MESSAGE=0.001, J_CHICKENPOX_44=0.6, J_CHICKENPOX_64=0.6, J_CHICKENPOX_66=0.6] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oocYuDcxoa3j for ; Tue, 18 May 2010 09:31:00 -0700 (PDT) Received: from qmta05.westchester.pa.mail.comcast.net (qmta05.westchester.pa.mail.comcast.net [76.96.62.48]) by core3.amsl.com (Postfix) with ESMTP id AF4E828C205 for ; Tue, 18 May 2010 09:25:22 -0700 (PDT) Received: from omta10.westchester.pa.mail.comcast.net ([76.96.62.28]) by qmta05.westchester.pa.mail.comcast.net with comcast id K3CG1e0020cZkys554RCUM; Tue, 18 May 2010 16:25:12 +0000 Received: from Harrington73653 ([67.189.235.106]) by omta10.westchester.pa.mail.comcast.net with comcast id K4RA1e00D2JQnJT3W4RAG0; Tue, 18 May 2010 16:25:11 +0000 From: "David Harrington" To: "'zhangyunfei'" , References: <201005171632159681677@chinamobile.com> Date: Tue, 18 May 2010 12:25:09 -0400 Message-ID: <03ac01caf6a6$af8bf6f0$0600a8c0@china.huawei.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_03AD_01CAF685.287A56F0" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <201005171632159681677@chinamobile.com> Thread-Index: Acr1m3qnnDEorvOjSqmRJr7dvyo3HQBCVNvg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Subject: Re: [ppsp] International ppsp workshop info X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 May 2010 16:31:02 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_03AD_01CAF685.287A56F0 Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: 7bit Hi, I haven't seen the logistics information. How does one register for this workshop? How does one get an invitation letter for visa purposes? Is there a workshop hotel? Is there a web page that contains this information? This is less than a month away. Is the timing definite? "Initally planned for June 17 and 18" is not very certain for people to make airline and hotel reservations. regarding the agenda: this looks like a lot to cover in two days. Is there room for discussions or just presentations? Is this workshop 9-5 both days? I am a bit concerned about the "PPSP progress since ietf77" item. This is NOT a PPSP WG interim meeting. If this is truly an international industrial and standards workshop, this item seems rather detailed as compared to the "PPSP related work in other standard bodies(e.g.,3GPP,ITU,ETSI)" item. How much time are you planning to allocate to each topic? Do you have commitments from presenters? I would like to see an agenda with a list of what will be presented. dbh _____ From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of zhangyunfei Sent: Monday, May 17, 2010 4:32 AM To: ppsp@ietf.org Subject: [ppsp] International ppsp workshop info Dear all, I would like to share the infomration of the International PPSP(Peer to Peer Streaming Protocol) Industrial and Standards Workshop in Beijing to be hosted by China Mobile.The workshop is initially planned to be held on June 17 and 18. The workshop targets to bring experts in main standards bodies(IETF,3GPP,ITU,CCSA) and industrial fields(Operators, network equipment vendors, P2P streaming vendors) together to present and discuss state-of-the-art peer-to-peer streaming technologies, applications, and systems and to identify the key issues and challenges in PPSP and accelerate PPSP progress in IETF. The workshop will focus but not limit on the following topics: 1) Industrial progress of P2P streaming$B!J(Be.g.,China Mobile,PPLive,UUSee,Forcetech,Goalbit,Ravy)as well as their considerations on PPSP; 2) key issues of P2P streaming; 3) Progress of PPSP since IETF77(e.g.,Open issues progress, Protocol progress); 4$B!K(BPPSP related work in other standard bodies(e.g.,3GPP,ITU,ETSI); 5) More interested topics. Please let me know if you are willing to attend this workshop.Thanks. Best regards! Sincerely yours, Yunfei 2010-05-17 ***************************************************** Yunfei Zhang, Ph.D. R&D, CHINA MOBILE COMMUNICATIONS CORPORATION Tel: +86 10 158016966688 ext. 3247 Fax: +86 10 63601087 MOBILE: 1360-1032-119 ***************************************************** _____ _____ zhangyunfei 2010-05-17 ------=_NextPart_000_03AD_01CAF685.287A56F0 Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable
Hi,
 
I haven't seen the logistics=20 information.
How does one register for this=20 workshop?
How does one get an invitation letter for visa=20 purposes?
Is there a workshop hotel?
Is there a web page that contains this=20 information?
This is less than a month away.
Is the timing definite? "Initally planned for June 17 and 18" = is not very=20 certain for people to make airline and hotel = reservations.
 
regarding the agenda:
this looks like a lot to cover in two days. Is = there room=20 for discussions or just presentations?
Is this workshop 9-5 both = days?
I am a bit concerned about the "PPSP progress = since ietf77"=20 item.
This is NOT a PPSP WG interim = meeting.
If this is truly an international industrial = and standards=20 workshop, this item seems rather detailed as compared to the "PPSP related work in other standard = bodies(e.g.,3GPP,ITU,ETSI)"=20 item.
How much time are you planning to allocate to each=20 topic?
Do you have commitments from presenters?
I=20 would like to see an agenda with a list of what will be=20 presented.
 
dbh
 
 
From:=20 ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of=20 zhangyunfei
Sent: Monday, May 17, 2010 4:32 = AM
To:=20 ppsp@ietf.org
Subject: [ppsp] International ppsp workshop=20 info

 Dear = = all,=20
   I would like to share the = infomration=20 of the International PPSP(Peer to Peer Streaming Protocol) = Industrial and=20 Standards Workshop in Beijing to be hosted by China = Mobile.The=20 workshop is initially planned to be held on June 17 and=20 = 18.=
   The workshop targets to bring experts in main standards=20 bodies(IETF,3GPP,ITU,CCSA) and industrial fields(Operators, network = equipment=20 vendors, P2P streaming vendors) together to present and discuss=20 state-of-the-art peer-to-peer streaming=20 technologies, applications, and systems and to identify = the key=20 issues and challenges in PPSP and accelerate PPSP progress in=20 = IETF.
   The workshop will focus but = not=20 limit on the following=20 = topics:
1) Industrial progress of P2P = streaming=1B$B!J=1B(Be.g.,China=20 Mobile,PPLive,UUSee,Forcetech,Goalbit,Ravy)as well as their = considerations on=20 PPSP;=
2) key issues of P2P=20 = streaming;=
3) Progress of PPSP=20 since IETF77(e.g.,Open issues progress, Protocol=20 = progress);=
4=1B$B!K=1B(BPPSP=20 related work in other standard=20 = bodies(e.g.,3GPP,ITU,ETSI);
5) More=20 interested=20 = topics.
    Please let me know if you are willing = to attend this=20 = workshop.Thanks.<= /FONT>
      =20 =
<= /FONT> 
Best=20 regards!
  Sincerely yours,
      = Yunfei=20
      =20 = 2010-05-17=
*****************************************************=
<= /FONT> 
Yunfei Zhang,=20 = Ph.D.
<= /FONT> 
R&D,=20 CHINA MOBILE COMMUNICATIONS=20 = CORPORATION
<= /FONT> 
Tel: +86 10=20 158016966688 ext.=20 = 3247
<= /FONT> 
Fax: +86 10=20 = 63601087
<= /FONT> 
MOBILE:=20 = 1360-1032-119
<= /FONT> 
*****************************************************=
 
zhangyunfei
2010-05-17
= ------=_NextPart_000_03AD_01CAF685.287A56F0-- From zhangyunfei@chinamobile.com Tue May 18 19:16:33 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id ABCCB3A69A4 for ; Tue, 18 May 2010 19:16:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -92.943 X-Spam-Level: X-Spam-Status: No, score=-92.943 tagged_above=-999 required=5 tests=[AWL=-0.474, BAYES_50=0.001, FH_RELAY_NODNS=1.451, GB_I_INVITATION=-2, GB_I_LETTER=-2, HELO_MISMATCH_COM=0.553, HTML_MESSAGE=0.001, J_CHICKENPOX_44=0.6, J_CHICKENPOX_46=0.6, J_CHICKENPOX_53=0.6, J_CHICKENPOX_64=0.6, J_CHICKENPOX_66=0.6, MIME_BASE64_TEXT=1.753, MIME_CHARSET_FARAWAY=2.45, RDNS_NONE=0.1, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id boYJAtpiGy1o for ; Tue, 18 May 2010 19:16:32 -0700 (PDT) Received: from cmccmta.chinamobile.com (unknown [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id 9FC223A68ED for ; Tue, 18 May 2010 19:16:31 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.2.71]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2010051910152963-3721 ; Wed, 19 May 2010 10:15:29 +0800 Date: Wed, 19 May 2010 10:16:00 +0800 From: "zhangyunfei" To: "David Harrington" , "ppsp@ietf.org" References: <201005171632159681677@chinamobile.com> <03ac01caf6a6$af8bf6f0$0600a8c0@china.huawei.com> Message-ID: <201005191016004219998@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-19 10:15:29, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-19 10:16:24, Serialize complete at 2010-05-19 10:16:24 Content-Type: multipart/alternative; boundary="=====003_Dragon130771422170_=====" Subject: Re: [ppsp] International ppsp workshop info X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 May 2010 02:16:33 -0000 This is a multi-part message in MIME format. --=====003_Dragon130771422170_===== Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="gb2312" VGhhbmtzIERhdmlkIGZvciB0aGUgc3VnZ2VzdGlvbi5WZXJ5IGNvbnNpZGVyYXRlIGFuZCB1c2Vm dWwgZm9yIHVzIHRvIG9yZ25pemUgdGhpcyB3b3Jrc2hvcC4NClRoaXMgaXMgYSBjbG9zZWQgbWVl dGluZyBvbiBKdW5lIDE3IGFuZCAxOCBhbmQgd2UgaGF2ZSBpbnZpdGVkIHNvbWUgZ3Vlc3RzIGZy b20gZGlmZmVyZW50IFNET3MgcmVsYXRlZCB0byBQUFNQIGZvciB0aGlzIHdvcmtzaG9wLkkgc2Vu dCBlbWFpbHMgYWJvdXQgdGhlIHdvcmtzaG9wIGFzIHdlbGwgYXMgdGhlIGludml0YXRpb24gbGV0 dGVyIGlzc3VlIHRvIG1vc3QgZ3V5cyBwYXJ0aWNpcGF0aW5nIGluIFBQU1AgZGlzY3Vzc2lvbnMg 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for ; Thu, 27 May 2010 09:23:33 -0700 (PDT) Received: from huawei.com (usaga03-in [172.18.4.17]) by usaga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0L3300JMQ6UZIN@usaga03-in.huawei.com> for ppsp@ietf.org; Thu, 27 May 2010 11:23:24 -0500 (CDT) Received: from zengPC (umc-196172.dhcp.missouri.edu [161.130.196.172]) by usaga03-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPSA id <0L3300JPI6UVRR@usaga03-in.huawei.com> for ppsp@ietf.org; Thu, 27 May 2010 11:23:23 -0500 (CDT) Date: Thu, 27 May 2010 11:23:18 -0500 From: "Wenjun (Kevin) Zeng" In-reply-to: To: 'Omer Luzzatti' , "'Y.J. Gu'" , ppsp@ietf.org Message-id: <014701cafdb8$ed73cec0$c85b6c40$@com> MIME-version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Content-type: multipart/alternative; boundary="Boundary_(ID_uciWDkaZ6GUh0qjsnCqbgQ)" Content-language: en-us Thread-index: Acq5Oa5Q6vJidF41SE6+0jYXucyX/AIhkPggDv0DGdA= References: <006801cab939$aead7c40$400ca40a@china.huawei.com> Subject: Re: [ppsp] We have submitted a Tracker Protocol X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list Reply-To: zengw@huawei.com List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 May 2010 16:23:52 -0000 This is a multi-part message in MIME format. --Boundary_(ID_uciWDkaZ6GUh0qjsnCqbgQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Hi Yingjie and all, While reading the tracker protocol draft, I came across the following questions. 1. The draft proposes that "Tracker may send STATISTICS messages to peers and peers report with the requested information." Any reason this should be initiated by the tracker, but not the peers? Some of the statistics parameters defined later such as Caching size and bandwidth seem to be more static information which could be reported when joining the swarm (using "put"). By the way, what is the definition of the "content report" parameter? 2. In the "put" and "get" methods between tracker and peers, chunk ID is involved. I was wondering what use cases do we have here for a peer to get the chunk information of the candidate peers from tracker (as opposed to directly from the peers)? There could be a synchronization issue between tracker and peers at the chunk level. This is probably related to Omer's first question below. I can understand having chunk info in the "put" method as this could be used for calculating statistics by the tracker. 3. 5.3 Statistics: Peer-Communication : 0x1 (Reserved) why do we have "peer communication" parameter in the tracker protocol? Thanks and best. -Kevin From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Omer Luzzatti Sent: Friday, March 12, 2010 2:46 AM To: Y.J. Gu; ppsp@ietf.org Subject: Re: [ppsp] We have submitted a Tracker Protocol Yingjie, Congrats on the first draft of the tracker protocol, really amazing work done in short time. Design point to consider: Especially for live streaming the tracker may need to 'recruit' resources to the swarm. These 'helper nodes' are joined nodes (and rightly you separated the 'join' from the swarmID) that could be helpful either for their bandwidth or storage. In general a tracker-originated 'Get' is what the server should send and the peers to be able to accept; in practice some additional information may be needed since the peers may not be real participates in the swarm but acting in different roles (super nodes, helpers, etc.). Note that in VOD you may want to 'distribute' the content which again will require the above. I know this complicates things significantly but please give it a thought. Questions: 1. It is not clear to me how a peer indicates that it 'deleted' a chunk from its storage. Does a peer send the entire list of chunks in every 'put'? this may be good if not too segmented but still if I delete my entire 'VOD title/swarm' data the server should be notified. 2. Do you expect peers to 'put' all of their existing storage just after 'joining'? 3. For security reasons we may want to consider having a 'session ID' to the Join response. 4. As you stated, for live streaming chunks won't be used so basically a peer will request a peer-list to watch that 'channel/swarm'. However, the swarmID may not be sufficient to indicate the entity wished to be watched. A peer may be authorized to watch the current program within the channel (the swarm) but not the next one (say a PPV event). This problem could be solved in one the following ways: a) letting the tracker reply with a different 'swarm-ID' to a get request (which btw will help when having different qualities swarms, or when there is more than one swarm representing the same content); b) having also a program ID as part of the reply. Regards and praises again for the work Omer From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of Y.J. Gu Sent: Monday, March 01, 2010 2:21 PM To: ppsp@ietf.org Subject: [ppsp] We have submitted a Tracker Protocol Hi everyone, We submitted a Tracker Protocol draft for ppsp. Abstract: This document defines P2P streaming Tracker Protocol, including functional entities and architecture, components, syntax and semantics. Tracker protocol is an application-level protocol for peers to register, publish/request content and inform peers status to Trackers. It is also for trackers to provide peer lists to peers, send control/manage messages and communicate with other trackers. Tracker protocol can serve both live media and Video on Demand (VoD), as well as file sharing. The URL for this draft is: http://www.ietf.org/id/draft-gu-ppsp-tracker-protocol-00.txt We appreciate your comments. Thanks. Regards Yingjie Gu --Boundary_(ID_uciWDkaZ6GUh0qjsnCqbgQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hi Yingjie and = all,

 

While reading the = tracker protocol draft, I came across the following = questions.

 

1.

The draft proposes that “Tracker may send STATISTICS messages to peers = and peers report with the requested information.” =  

Any reason this = should be initiated by the tracker, but not the peers? Some of the statistics = parameters defined later such as Caching size and bandwidth seem to be more static information which could be reported when joining the swarm (using = “put”). By the way, what is the definition of the “content report” parameter?

 

2. In the = “put” and “get” methods between tracker and peers, chunk ID is = involved.

I was wondering = what use cases do we have here for a peer to get the chunk information of the candidate = peers from tracker (as opposed to directly from the peers)? There could be a synchronization issue between tracker and peers at the chunk level. This = is probably related to Omer’s first question = below.

I can understand = having chunk info in the “put” method as this could be used for = calculating statistics by the tracker.

 

3.

5.3 Statistics: =  

Peer-Communication = : 0x1 (Reserved)

why do we have = “peer communication” parameter in the tracker = protocol?

 

Thanks and = best.

 

-Kevin

 

From:= ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Omer Luzzatti
Sent: Friday, March 12, 2010 2:46 AM
To: Y.J. Gu; ppsp@ietf.org
Subject: Re: [ppsp] We have submitted a Tracker = Protocol

 

Yingjie,

 

Congrats on = the first draft of the tracker protocol, really amazing work done in short time. =

Design point = to consider:

Especially for live streaming the tracker may need = to ‘recruit’ resources to the swarm. These ‘helper = nodes’ are joined nodes (and rightly you separated the ‘join’ from = the swarmID) that could be helpful either for their bandwidth or storage. In general a tracker-originated ‘Get’ is what the server should = send and the peers to be able to accept; in practice some additional = information may be needed since the peers may not be real participates in the swarm but = acting in different roles (super nodes, helpers, etc…). Note that in VOD = you may want to ‘distribute’ the content which again will require = the above. I know this complicates things significantly but please give it a thought.

 

Questions:

1.      = It is not clear to me how a peer indicates that it ‘deleted’ a = chunk from its storage. Does a peer send the entire list of chunks in every ‘put’? this may be good if not too segmented but still if I = delete my entire ‘VOD title/swarm’ data the server should be = notified.

2.      = Do you expect peers to ‘put’ all of their existing storage just = after ‘joining’?

3.      = For security reasons we may want to consider having a ‘session = ID’ to the Join response.

4.      = As you stated, for live streaming chunks won’t be used so basically a = peer will request a peer-list to watch that ‘channel/swarm’. = However, the swarmID may not be sufficient to indicate the entity wished to be = watched. A peer may be authorized to watch the current program within the channel = (the swarm) but not the next one (say a PPV event). This problem could be = solved in one the following ways: a) letting the tracker reply with a different ‘swarm-ID’ to a get request (which btw will help when having different qualities swarms, or when there is more than one swarm = representing the same content); b) having also a program ID as part of the reply. =

 

Regards and praises again for the = work

Omer

 

 

From:= ppsp-bounces@ietf.org = [mailto:ppsp-bounces@ietf.org] On = Behalf Of Y.J. Gu
Sent: Monday, March 01, 2010 2:21 PM
To: ppsp@ietf.org
Subject: [ppsp] We have submitted a Tracker = Protocol

 

Hi everyone,
We submitted a Tracker Protocol draft for = ppsp.

 

Abstract:

   = This document defines P2P streaming Tracker Protocol, including functional = entities and architecture, components, syntax and semantics. =

   = Tracker protocol is an application-level protocol for peers to register, publish/request content and inform peers status to Trackers. It is also = for trackers to provide peer lists to peers, send control/manage messages = and communicate with other trackers. Tracker protocol can serve both live = media and Video on Demand (VoD), as well as file sharing.

 
The URL for this draft is:
http://www.ietf.org/id/draft-gu-ppsp-tracker-p= rotocol-00.txt

 

We appreciate your = comments.
Thanks.

 

 

 

 

 

Regards

Yingjie Gu

 

--Boundary_(ID_uciWDkaZ6GUh0qjsnCqbgQ)-- From zhangyunfei@chinamobile.com Thu May 27 19:50:36 2010 Return-Path: X-Original-To: ppsp@core3.amsl.com Delivered-To: ppsp@core3.amsl.com Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 780B83A69CD for ; Thu, 27 May 2010 19:50:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -92.973 X-Spam-Level: X-Spam-Status: No, score=-92.973 tagged_above=-999 required=5 tests=[BAYES_50=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_83=0.6, MIME_BASE64_TEXT=1.753, MIME_CHARSET_FARAWAY=2.45, RELAY_IS_221=2.222, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ehsim7gHZYna for ; Thu, 27 May 2010 19:50:35 -0700 (PDT) Received: from cmccmta.chinamobile.com (cmccmta.chinamobile.com [221.130.253.133]) by core3.amsl.com (Postfix) with ESMTP id 90F083A6987 for ; Thu, 27 May 2010 19:50:34 -0700 (PDT) Received: from LENOVO-917FFE55 ([10.2.2.119]) by mail.chinamobile.com (Lotus Domino Release 6.5.5FP1) with SMTP id 2010052810494431-4549 ; Fri, 28 May 2010 10:49:44 +0800 Date: Fri, 28 May 2010 10:50:18 +0800 From: "zhangyunfei" To: "zengw@huawei.com" , "'Omer Luzzatti'" , "'Y.J. Gu'" , "ppsp@ietf.org" References: <006801cab939$aead7c40$400ca40a@china.huawei.com> <014701cafdb8$ed73cec0$c85b6c40$@com> Message-ID: <201005281050179848824@chinamobile.com> X-mailer: Foxmail 6, 2, 103, 20 [cn] Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on jtgsml01/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-28 10:49:44, Serialize by Router on cmccmta/servers/cmcc(Release 6.5.5FP1 | April 14, 2006) at 2010-05-28 10:50:25, Serialize complete at 2010-05-28 10:50:25 Content-Type: multipart/alternative; boundary="=====003_Dragon207713673361_=====" Subject: Re: [ppsp] We have submitted a Tracker Protocol X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 May 2010 02:50:36 -0000 This is a multi-part message in MIME format. --=====003_Dragon207713673361_===== 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17:54:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 1.527 X-Spam-Level: * X-Spam-Status: No, score=1.527 tagged_above=-999 required=5 tests=[AWL=-1.525, BAYES_50=0.001, HTML_MESSAGE=0.001, J_CHICKENPOX_83=0.6, MIME_CHARSET_FARAWAY=2.45] Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZAjji2T011Hx for ; Sat, 29 May 2010 17:54:08 -0700 (PDT) Received: from usaga01-in.huawei.com (usaga01-in.huawei.com [206.16.17.211]) by core3.amsl.com (Postfix) with ESMTP id 602783A6958 for ; Sat, 29 May 2010 17:54:08 -0700 (PDT) Received: from huawei.com (usaga01-in [172.18.4.6]) by usaga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTP id <0L3700MSTJTWCX@usaga01-in.huawei.com> for ppsp@ietf.org; Sat, 29 May 2010 17:53:57 -0700 (PDT) Received: from zengPC (umc-196172.dhcp.missouri.edu [161.130.196.172]) by usaga01-in.huawei.com (iPlanet Messaging Server 5.2 HotFix 2.14 (built Aug 8 2006)) with ESMTPSA id <0L3700E7SJTMEL@usaga01-in.huawei.com> for ppsp@ietf.org; Sat, 29 May 2010 17:53:56 -0700 (PDT) Date: Sat, 29 May 2010 19:53:44 -0500 From: "Wenjun (Kevin) Zeng" In-reply-to: <002d01cafece$7bc003e0$58548a0a@china.huawei.com> To: "'Y.J. Gu'" , 'zhangyunfei' , 'Omer Luzzatti' , ppsp@ietf.org Message-id: <001801caff92$940d2d00$bc278700$@com> MIME-version: 1.0 X-Mailer: Microsoft Office Outlook 12.0 Content-type: multipart/alternative; boundary="Boundary_(ID_3DgcJHpWDAZ+grcawrha8g)" Content-language: en-us Thread-index: Acr+EIsXXJYW+FbIQoitqepsEGbZLQAuoNpwADEd4MA= References: <201005281050179848824@chinamobile.com> <002d01cafece$7bc003e0$58548a0a@china.huawei.com> Subject: Re: [ppsp] We have submitted a Tracker Protocol X-BeenThere: ppsp@ietf.org X-Mailman-Version: 2.1.9 Precedence: list Reply-To: zengw@huawei.com List-Id: discussing to draw up peer to peer streaming protocol List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 30 May 2010 00:54:11 -0000 This is a multi-part message in MIME format. --Boundary_(ID_3DgcJHpWDAZ+grcawrha8g) Content-type: text/plain; charset=gb2312 Content-transfer-encoding: quoted-printable Hi Yunfei and Yingjie, =20 Thanks a lot for your clarification.=20 Please see my responses inline below, starting with [Kevin]. =20 Best. =20 -Kevin =20 From: Y.J. Gu [mailto:guyingjie@huawei.com]=20 Sent: Friday, May 28, 2010 8:30 PM To: 'zhangyunfei'; zengw@huawei.com; 'Omer Luzzatti'; ppsp@ietf.org Subject: =B4=F0=B8=B4: Re: [ppsp] We have submitted a Tracker Protocol =20 Hi Yunfei and Kevin, Now we have updated the Tracker protocol and will submit soon. In the = latest version, we define 2 messages. STAT-Query is used by Tracker to query = Peer information. STAT-Report is initiated by peer to report peer = information. But, as Yunfei said, the system statistics can also be notified by = Tracker to peers, which is an existing schedule policy in P2P application, to improve the global performance and efficiency of PPSP. We can extend the STAT-Report to enable Tracker notifies the system statistics = information. Or, to make the syntax more legible, design a new message. =20 =20 [Kevin] Sounds good to me. =20 =20 As for your 2nd question, Peer doesn=A1=AFt use GET to get chunks = information of a candidate peer, instead the chunk id in the GET message indicate which chunks the requesting peer is interested in and Tracker should find some candidate peers who possess the desired chunks. And, in the following steps, the requesting peer will get detail chunks information by = querying the candidate peers. =20 [Kevin] Sorry my fault in not clearly stating my question. I was = wondering about the benefit of a peer requesting a list of peers that has a = specific chunk from the tracker. If I understand correctly, in BitTorrent, for example, tracker returns a list of peers in the swarm upon a request = from a joining peer. Typically requesting peer specifies only the Swarm ID (or = file ID). Specifying chunk ID in the peer list request does provide more flexibility (and potentially a better customized peer list), but I was a = bit concerned about the synchronization of chuck availability information between tracker and individual peers (e.g. in the case peers delete some chunks but have not updated the tracker). But maybe a first order approximation of the chunk availability information is sufficient in practice.=20 =20 As for your 3rd question, we have made removed it from the new version. =20 Thank you very much for your comments.=20 =20 =20 _____ =20 =B7=A2=BC=FE=C8=CB: zhangyunfei [mailto:zhangyunfei@chinamobile.com]=20 =B7=A2=CB=CD=CA=B1=BC=E4: 2010=C4=EA5=D4=C228=C8=D5 =C0=D6=C0=D610:50 =CA=D5=BC=FE=C8=CB: zengw@huawei.com; 'Omer Luzzatti'; 'Y.J. Gu'; = ppsp@ietf.org =D6=F7=CC=E2: Re: Re: [ppsp] We have submitted a Tracker Protocol =20 Hi Kevin. For the 1st question,one reason for the tracker (of course, peer can = also send statistics) to send statistics message is that the tracker actively pushes some system statistics(e.g., accumulated total upload/download = ratio, content scarcity degree,etc)to the peers and the peers can adjust its = own parameters(like caching size or upload/download ratio)accordingly for a better display. =20 BR Yunfei=20 =20 _____ =20 zhangyunfei 2010-05-28 _____ =20 =B7=A2=BC=FE=C8=CB=A3=BA Wenjun (Kevin) Zeng =B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2010-05-28 00:23:24 =CA=D5=BC=FE=C8=CB=A3=BA 'Omer Luzzatti'; 'Y.J. Gu'; ppsp@ietf.org =B3=AD=CB=CD=A3=BA=20 =D6=F7=CC=E2=A3=BA Re: [ppsp] We have submitted a Tracker Protocol =20 Hi Yingjie and all, =20 While reading the tracker protocol draft, I came across the following questions. =20 1. The draft proposes that =A1=B0Tracker may send STATISTICS messages to = peers and peers report with the requested information.=A1=B1 =20 Any reason this should be initiated by the tracker, but not the peers? = Some of the statistics parameters defined later such as Caching size and bandwidth seem to be more static information which could be reported = when joining the swarm (using =A1=B0put=A1=B1). By the way, what is the = definition of the =A1=B0content report=A1=B1 parameter? =20 2. In the =A1=B0put=A1=B1 and =A1=B0get=A1=B1 methods between tracker = and peers, chunk ID is involved.=20 I was wondering what use cases do we have here for a peer to get the = chunk information of the candidate peers from tracker (as opposed to directly = from the peers)? There could be a synchronization issue between tracker and = peers at the chunk level. This is probably related to Omer=A1=AFs first = question below. I can understand having chunk info in the =A1=B0put=A1=B1 method as this = could be used for calculating statistics by the tracker. =20 3. 5.3 Statistics: =20 Peer-Communication : 0x1 (Reserved)=20 why do we have =A1=B0peer communication=A1=B1 parameter in the tracker = protocol? =20 =20 Thanks and best. =20 -Kevin =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Omer Luzzatti Sent: Friday, March 12, 2010 2:46 AM To: Y.J. Gu; ppsp@ietf.org Subject: Re: [ppsp] We have submitted a Tracker Protocol =20 Yingjie, =20 Congrats on the first draft of the tracker protocol, really amazing work done in short time.=20 Design point to consider:=20 Especially for live streaming the tracker may need to = =A1=AErecruit=A1=AF resources to the swarm. These =A1=AEhelper nodes=A1=AF are joined nodes (and = rightly you separated the =A1=AEjoin=A1=AF from the swarmID) that could be helpful = either for their bandwidth or storage. In general a tracker-originated = =A1=AEGet=A1=AF is what the server should send and the peers to be able to accept; in practice = some additional information may be needed since the peers may not be real participates in the swarm but acting in different roles (super nodes, helpers, etc=A1=AD). Note that in VOD you may want to = =A1=AEdistribute=A1=AF the content which again will require the above. I know this complicates things significantly but please give it a thought. =20 Questions: 1. It is not clear to me how a peer indicates that it = =A1=AEdeleted=A1=AF a chunk from its storage. Does a peer send the entire list of chunks in = every =A1=AEput=A1=AF? this may be good if not too segmented but still if I = delete my entire =A1=AEVOD title/swarm=A1=AF data the server should be notified.=20 2. Do you expect peers to =A1=AEput=A1=AF all of their existing = storage just after =A1=AEjoining=A1=AF?=20 3. For security reasons we may want to consider having a = =A1=AEsession ID=A1=AF to the Join response. 4. As you stated, for live streaming chunks won=A1=AFt be used so = basically a peer will request a peer-list to watch that =A1=AEchannel/swarm=A1=AF. = However, the swarmID may not be sufficient to indicate the entity wished to be watched. A peer may be authorized to watch the current program within = the channel (the swarm) but not the next one (say a PPV event). This problem could be solved in one the following ways: a) letting the tracker reply = with a different =A1=AEswarm-ID=A1=AF to a get request (which btw will help = when having different qualities swarms, or when there is more than one swarm representing the same content); b) having also a program ID as part of = the reply.=20 =20 Regards and praises again for the work Omer =20 =20 From: ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Y.J. Gu Sent: Monday, March 01, 2010 2:21 PM To: ppsp@ietf.org Subject: [ppsp] We have submitted a Tracker Protocol =20 Hi everyone, We submitted a Tracker Protocol draft for ppsp. =20 Abstract: This document defines P2P streaming Tracker Protocol, including functional entities and architecture, components, syntax and semantics.=20 Tracker protocol is an application-level protocol for peers to = register, publish/request content and inform peers status to Trackers. It is also = for trackers to provide peer lists to peers, send control/manage messages = and communicate with other trackers. Tracker protocol can serve both live = media and Video on Demand (VoD), as well as file sharing.=20 The URL for this draft is: http://www.ietf.org/id/draft-gu-ppsp-tracker-protocol-00.txt =20 We appreciate your comments. Thanks. =20 =20 =20 =20 =20 Regards Yingjie Gu =20 --Boundary_(ID_3DgcJHpWDAZ+grcawrha8g) Content-type: text/html; charset=gb2312 Content-transfer-encoding: quoted-printable

Hi Yunfei and = Yingjie,

 

Thanks a lot for = your clarification.

Please see my = responses inline below, starting with [Kevin].

 

Best.

 

-Kevin

 

From:= Y.J. Gu [mailto:guyingjie@huawei.com]
Sent: Friday, May 28, 2010 8:30 PM
To: 'zhangyunfei'; zengw@huawei.com; 'Omer Luzzatti'; = ppsp@ietf.org
Subject: =B4=F0=B8=B4: Re: [ppsp] We have submitted a Tracker Protocol

 

Hi Yunfei and Kevin,

Now we have updated the Tracker protocol and will submit = soon. In the latest version, we define 2 messages. STAT-Query is used by Tracker = to query Peer information.  STAT-Report is initiated by peer to report = peer information.  But, as Yunfei said, the system statistics can also = be notified by Tracker to peers, which is an existing schedule policy in = P2P application, to improve the global performance and efficiency of PPSP. = We can extend the STAT-Report to enable Tracker notifies the system statistics information. Or, to make the syntax more legible, design a new = message.

 

 

[Kevin] Sounds good to me.

 

 

As for your 2nd question, Peer doesn=A1=AFt use = GET to get chunks information of a candidate peer, instead the chunk id in the GET = message indicate which chunks the requesting peer is interested in and Tracker = should find some candidate peers who possess the desired chunks.  And, in = the following steps, the requesting peer will get detail chunks information = by querying the candidate peers.

 

[Kevin] Sorry my fault in not clearly stating my = question. I was wondering about the benefit of a peer requesting a list of peers that = has a specific chunk from the tracker. If I understand correctly, in = BitTorrent, for example, tracker returns a list of peers in the swarm upon a request = from a joining peer. Typically requesting peer specifies only the Swarm ID (or = file ID). Specifying chunk ID in the peer list request does provide more = flexibility (and potentially a better customized peer list), but I was a bit = concerned about the synchronization of chuck availability information between = tracker and individual peers (e.g. in the case peers delete some chunks but have not updated the tracker).  But maybe a first order approximation of the = chunk availability information is sufficient in practice.

 

As for your 3rd question, we have made removed it = from the new version.

 

Thank you very much for your comments. =

 

 

=B7=A2=BC=FE=C8=CB: zhangyunfei = [mailto:zhangyunfei@chinamobile.com]
=B7=A2=CB=CD=CA=B1=BC=E4: 2010=C4=EA5=D4=C228=C8=D5 =C0=D6=C0=D610:50
=CA=D5=BC=FE=C8=CB: zengw@huawei.com; 'Omer Luzzatti'; 'Y.J. = Gu'; ppsp@ietf.org
=D6=F7=CC=E2<= span style=3D'font-size:10.0pt;font-family:SimSun'>: Re: Re: [ppsp] We have submitted a Tracker = Protocol

 

Hi Kevin.

   For = the 1st question,one reason for the tracker (of course, peer can also send statistics) to send statistics message is that the tracker actively = pushes some system statistics(e.g., accumulated total upload/download = ratio, content scarcity degree,etc)to the peers and the peers can adjust its = own parameters(like caching size or upload/download = ratio)accordingly for a better display.

 

BR

Yunfei 

 

zhangyunfei

2010-05-28=

=B7=A2=BC=FE=C8=CB=A3=BA Wenjun = (Kevin) Zeng

=B7=A2=CB=CD=CA=B1=BC=E4=A3= =BA 2010-05-28 00:23:24

=CA=D5=BC=FE=C8=CB=A3=BA 'Omer = Luzzatti'; 'Y.J. Gu'; ppsp@ietf.org

=B3=AD=CB=CD=A3=BA =

=D6=F7=CC=E2=A3=BA Re: = [ppsp] We have submitted a Tracker Protocol

 

Hi Yingjie and = all,

 

While reading the = tracker protocol draft, I came across the following = questions.

 

1.

The draft proposes = that =A1=B0Tracker may send STATISTICS messages to peers and peers report = with the requested information.=A1=B1  

Any reason this = should be initiated by the tracker, but not the peers? Some of the statistics = parameters defined later such as Caching size and bandwidth seem to be more static information which could be reported when joining the swarm (using = =A1=B0put=A1=B1). By the way, what is the definition of the =A1=B0content report=A1=B1 = parameter?

 

2. In the = =A1=B0put=A1=B1 and =A1=B0get=A1=B1 methods between tracker and peers, chunk ID is involved. =

I was wondering = what use cases do we have here for a peer to get the chunk information of the = candidate peers from tracker (as opposed to directly from the peers)? There could = be a synchronization issue between tracker and peers at the chunk level. This = is probably related to Omer=A1=AFs first question = below.

I can understand = having chunk info in the =A1=B0put=A1=B1 method as this could be used for calculating = statistics by the tracker.

 

3.

5.3 Statistics: =  

Peer-Communication = : 0x1 (Reserved)

why do we have = =A1=B0peer communication=A1=B1 parameter in the tracker = protocol?

 

 

Thanks and = best.

 

-Kevin

 

From:= ppsp-bounces@ietf.org [mailto:ppsp-bounces@ietf.org] On Behalf Of = Omer Luzzatti
Sent: Friday, March 12, 2010 2:46 AM
To: Y.J. Gu; ppsp@ietf.org
Subject: Re: [ppsp] We have submitted a Tracker = Protocol

 

Yingjie,

 

Congrats on the = first draft of the tracker protocol, really amazing work done in short time. =

Design point to = consider:

Especially for live streaming the tracker may need = to =A1=AErecruit=A1=AF resources to the swarm. These =A1=AEhelper = nodes=A1=AF are joined nodes (and rightly you separated the =A1=AEjoin=A1=AF from the swarmID) that could = be helpful either for their bandwidth or storage. In general a tracker-originated = =A1=AEGet=A1=AF is what the server should send and the peers to be able to accept; in practice = some additional information may be needed since the peers may not be real participates in the swarm but acting in different roles (super nodes, = helpers, etc=A1=AD). Note that in VOD you may want to =A1=AEdistribute=A1=AF the = content which again will require the above. I know this complicates things significantly but = please give it a thought.

 

Questions:

1.      It is not clear to me how a peer indicates that it =A1=AEdeleted=A1=AF a chunk = from its storage. Does a peer send the entire list of chunks in every = =A1=AEput=A1=AF? this may be good if not too segmented but still if I delete my entire =A1=AEVOD = title/swarm=A1=AF data the server should be notified.

2.      Do you expect peers to =A1=AEput=A1=AF all of their existing storage just after = =A1=AEjoining=A1=AF?

3.      For security reasons we may want to consider having a =A1=AEsession ID=A1=AF = to the Join response.

4.      As you stated, for live streaming chunks won=A1=AFt be used so basically a peer = will request a peer-list to watch that =A1=AEchannel/swarm=A1=AF. However, = the swarmID may not be sufficient to indicate the entity wished to be watched. A peer may be authorized to watch the current program within the channel (the swarm) = but not the next one (say a PPV event). This problem could be solved in one the following ways: a) letting the tracker reply with a different = =A1=AEswarm-ID=A1=AF to a get request (which btw will help when having different qualities swarms, = or when there is more than one swarm representing the same content); b) = having also a program ID as part of the reply.

 

Regards and praises again for the = work

Omer

 

 

From:= ppsp-bounces@ietf.org = [mailto:ppsp-bounces@ietf.org] On = Behalf Of Y.J. Gu
Sent: Monday, March 01, 2010 2:21 PM
To: ppsp@ietf.org
Subject: [ppsp] We have submitted a Tracker = Protocol

 

Hi everyone,
We submitted a Tracker Protocol draft for = ppsp.

 

Abstract:

   = This document defines P2P streaming Tracker Protocol, including functional = entities and architecture, components, syntax and semantics. =

   = Tracker protocol is an application-level protocol for peers to register, publish/request content and inform peers status to Trackers. It is also = for trackers to provide peer lists to peers, send control/manage messages = and communicate with other trackers. Tracker protocol can serve both live = media and Video on Demand (VoD), as well as file sharing.


The URL for this draft is:
http://www.ietf.org/id/draft-gu-ppsp-tracker-p= rotocol-00.txt

 

We appreciate your = comments.
Thanks.

 

 

 

 

 =

Regards

Yingjie Gu

 

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