From mailman-owner@ietf.org  Tue Feb  1 05:05:48 2000
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This is a reminder, sent out once a month, about your ietf.org mailing
list memberships.  It includes your subscription info and how to use
it to change it or unsubscribe from a list.

You can visit the URLs to change your membership status or
configuration, including unsubscribing, setting digest-style delivery
or disabling delivery altogether (e.g., for a vacation), and so on.

In addition to the URL interfaces, you can also use email to make such
changes.  For more info, send a message to the '-request' address of
the list (for example, diffserv-request@ietf.org) containing just the
word 'help' in the message body, and an email message will be sent to
you with instructions.

If you have questions, problems, comments, etc, send them to
mailman-owner@ietf.org.  Thanks!

Passwords for diffserv-archive@optimus.ietf.org:

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http://www.ietf.org/mailman/options/diffserv/diffserv-archive@optimus.ietf.org


From diffserv-admin@ietf.org  Tue Feb  1 15:08:46 2000
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Date: Tue, 01 Feb 2000 11:20:46 -0800
To: Maria Elena Villapol <maria@SPRI.Levels.UniSA.Edu.Au>
From: Fred Baker <fred@cisco.com>
Cc: RSVP <rsvp@ISI.EDU>, diffserv <diffserv@ietf.org>
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At 02:59 PM 1/31/00 +1030, Maria Elena Villapol wrote: 
>
> How could we get the work group scheduling (agenda) for the meeting? 


Are you on ietf-announce@ietf.org? If not, send a note to
ietf-announce-request@ietf.org, and you should start receiving announcements of
internet drafts, meetings, and the like.

The agendas of the diff-serv and rsvp meetings should be posted on the
diff-serv and rsvp mailing lists

you can also find more meeting information at www.ietf.org, and more
specifically, http://www.ietf.org/meetings/IETF-47.html. The agenda is not
posted there as yet, but should be within the next few weeks.

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From diffserv-admin@ietf.org  Thu Feb  3 15:05:19 2000
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From: Yonghong Ren <ren@appiancom.com>
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Subject: [Diffserv] Apologies  --  Re: Check this
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This message is in MIME format. Since your mail reader does not understand
this format, some or all of this message may not be legible.

------_=_NextPart_001_01BF6E5C.3E21FE48
Content-Type: text/plain;
	charset="iso-8859-1"

Hello everyone.

I was hit by a virus hidden in a mail I received from someone I actually
know. The virus replicated itself to every address in my Microsoft Outlook
Address Book, which unfortunately contained several mailing list addresses,
including DiffServ's.

If you see a mail with "Check this" subject line, please delete it right
away! Don't open the attachment!

If you did open the attachment and your computer runs the wonderful
Microsoft Windows, please do the following to clean the virus out:

*	search your local hard disks for RUNDLL.VBS and LINKS.VBS and remove
them. (Should be in Windows\system32 or WinNT\system32)

*	 search Windows Registry for RUNDLL.VBS and remove the entry. (You
need to run regedit to do this.)

I can't express how sorry I am for the trouble I caused. I offer my
sincerest apologies to you all!

Thank you.

Ren Yonghong
Ren Yonghong
Appian Communications, Inc.
ren@appiancom.com <mailto:ren@appiancom.com> 
978 929-9098 x131
 

------_=_NextPart_001_01BF6E5C.3E21FE48
Content-Type: text/html;
	charset="iso-8859-1"

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">


<META content="MSHTML 5.00.2314.1000" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT size=2>
<P>Hello everyone.</P>
<P>I was hit by a virus hidden in a mail I received from someone I actually 
know. The virus replicated itself to every address in my Microsoft Outlook 
Address Book, which unfortunately contained several mailing list addresses<SPAN 
class=729122915-03022000>, including DiffServ</SPAN><SPAN 
class=729122915-03022000>'s</SPAN>.</P>
<P>If you see a mail with "Check this" subject line, please delete it right 
away! Don't open the attachment!</P>
<P>If you did open the attachment and your computer runs the wonderful Microsoft 
Windows, please do the following to clean the virus out:</P>
<UL style="MARGIN-RIGHT: 0px">
  <LI>search your local hard disks for <FONT color=#ff0000>RUNDLL.VBS </FONT>and 
  <FONT color=#ff0000>LINKS.VBS </FONT>and remove them. (Should be in 
  Windows\system32 or WinNT\system32)<BR></LI>
  <LI>&nbsp;search Windows Registry for RUNDLL.VBS and remove the entry. (You 
  need to run regedit to do this.)</LI></UL>
<P></P>
<P><FONT color=#ff0000 size=4>I can't express how sorry I am for the trouble I 
caused. I offer my sincerest apologies to you all!</FONT></P>
<P>Thank you.</FONT></P></DIV>
<DIV><FONT face=Script>Ren Yonghong</FONT></DIV>
<DIV><FONT face="Times New Roman">Ren Yonghong</FONT></DIV>
<DIV><FONT face="Times New Roman">Appian Communications, Inc.</FONT></DIV>
<DIV><FONT face="Times New Roman"><A 
href="mailto:ren@appiancom.com">ren@appiancom.com</A></FONT></DIV>
<DIV><FONT face=Arial size=2>978 929-9098 x131</FONT></DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

------_=_NextPart_001_01BF6E5C.3E21FE48--

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From diffserv-admin@ietf.org  Thu Feb  3 21:47:38 2000
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From: Mudassir Tufail <Mudassir@calynet.com>
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Subject: [Diffserv] forwarding & aggregating of AF classes (RFC2597)
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Hello

Some questions raised in my mind while reading the second paragraph in
section 2.0 of RFC2597 which says:

"A DS node SHOULD implement all four general use AF classes. Packets in one
AF class MUST be forwarded independently from packets in another AF class,
i.e., a DS node MUST NOT aggregate two or more AF classes together."

1) Does it exclude the possibility of having AF classes being "relatively"
forwarded? 
For example AF1x class being forwarded with two times lesser delay than
class AF2x. In this case, packets of AF1x class are not being forwarded
independently from packets of AF2x class. Does it not violate the
requirement (of independent forwarding) quoted above?

2) If I remember correct, there have been a discussion on the list for
mapping many DSCPs to a single PHB (in case if a node imlpements fewer
PHBs). This behavior of node does not make it DS non-compliant (correct me
if it is wrong). Is it not the case of aggregating two or more AF classes
together (i.e. a possible violation of the above quote)?

Thank you,  

Mudassir Tufail

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Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/



From diffserv-admin@ietf.org  Fri Feb  4 09:50:43 2000
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From: Juha Heinanen <jh@lohi.eng.telia.fi>
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Date: Fri, 4 Feb 2000 15:57:14 +0200 (EET)
To: Mudassir Tufail <Mudassir@calynet.com>
Cc: diffserv@ietf.org
Subject: [Diffserv] forwarding & aggregating of AF classes (RFC2597)
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Mudassir Tufail writes:

 > "A DS node SHOULD implement all four general use AF classes. Packets in one
 > AF class MUST be forwarded independently from packets in another AF class,
 > i.e., a DS node MUST NOT aggregate two or more AF classes together."

 > 1) Does it exclude the possibility of having AF classes being "relatively"
 > forwarded?

i don't read it that way.  the "i.e." part tries to interpret what the
earlier part of the sentence says and that doesn't prevent relative
allocation of resources.  the only requirement regarding resource
allocation is

   A DS node MUST allocate a configurable, minimum amount of forwarding
   resources (buffer space and bandwidth) to each implemented AF class.
   Each class SHOULD be serviced in a manner to achieve the configured
   service rate (bandwidth) over both small and large time scales.

and a minimun amount of forwarding resources can be calculated from a
relative weight.

 > 2) If I remember correct, there have been a discussion on the list for
 > mapping many DSCPs to a single PHB (in case if a node imlpements fewer
 > PHBs). This behavior of node does not make it DS non-compliant (correct me
 > if it is wrong). Is it not the case of aggregating two or more AF classes
 > together (i.e. a possible violation of the above quote)?

a node SHOULD implement all four classes, but if it doesn't, it still is
not allowed to aggregate two classes together.

-- juha

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From diffserv-admin@ietf.org  Fri Feb  4 11:43:26 2000
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Date: Fri, 4 Feb 2000 21:21:04 +0530
From: Dhiman Barman <dhiman@cse.iitb.ernet.in>
To: diffserv@ietf.org
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Hi,
  What I could understand is that a filter of a queueing discipline 
decides which class a packet should go to looking at the DSCP cde
point. Now can some one correct me, what happens if the DSCP bits 
are not set while a packet enters  a DS domain. Who guides the setting
of the bits ?

Thanks,
Dhiman

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http://www.ietf.org/mailman/listinfo/diffserv
Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/



From diffserv-admin@ietf.org  Fri Feb  4 14:20:19 2000
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From: Mudassir Tufail <Mudassir@calynet.com>
To: "'dhiman@cse.iitb.ernet.in'" <dhiman@cse.iitb.ernet.in>
Cc: diffserv@ietf.org
Subject: RE: [Diffserv] bits
Date: Fri, 4 Feb 2000 10:04:58 -0800 
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Ingress node of DS domain may perform MF classification to classify an
unmarked packet. The policy of the DS domain determines the value of DSCP
with which the packet should then be marked.  

Mudassir 

> -----Original Message-----
> From: Dhiman Barman [mailto:dhiman@cse.iitb.ernet.in]
> Sent: Friday, February 04, 2000 7:51 AM
> To: diffserv@ietf.org
> Subject: [Diffserv] bits
> 
> 
> Hi,
>   What I could understand is that a filter of a queueing discipline 
> decides which class a packet should go to looking at the DSCP cde
> point. Now can some one correct me, what happens if the DSCP bits 
> are not set while a packet enters  a DS domain. Who guides the setting
> of the bits ?
> 
> Thanks,
> Dhiman
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/
> 

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From diffserv-admin@ietf.org  Fri Feb  4 19:00:44 2000
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Dhiman,

This is described in RFC 2475

   Brian

Dhiman Barman wrote:
> 
> Hi,
>   What I could understand is that a filter of a queueing discipline
> decides which class a packet should go to looking at the DSCP cde
> point. Now can some one correct me, what happens if the DSCP bits
> are not set while a packet enters  a DS domain. Who guides the setting
> of the bits ?
> 
> Thanks,
> Dhiman
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/

-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Brian E Carpenter (IAB Chair)
Program Director, Internet Standards & Technology, IBM 
On assignment for IBM at http://www.iCAIR.org 
Attend INET 2000: http://www.isoc.org/inet2000
Non-IBM email: brian@icair.org

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From diffserv-admin@ietf.org  Sat Feb  5 02:41:45 2000
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Date: Sat, 5 Feb 2000 12:36:36 +0530
From: Dhiman Barman <dhiman@cse.iitb.ernet.in>
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Hi All,
	 I want to see the utilities that come with diffserv patches. I
mean to say, we can test the perl scripts for testing the ds features.
Now where is the application or interface which takes in the various 
high level commands like add dev .. and so on and play the QoS related 
tasks. 

Thanks,
Dhiman

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From diffserv-admin@ietf.org  Mon Feb  7 09:38:55 2000
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Diffservers,

The diffserv sessions in Adelaide will be 

MONDAY, March 27, 2000 1530-1730
TUESDAY, March 28, 2000 1300-1400

  Brian Carpenter
  diffserv co-chair



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From diffserv-admin@ietf.org  Mon Feb  7 22:31:30 2000
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To: diffserv@ietf.org
Subject: Re: [Diffserv] TSWTCM - Action from Washington IETF
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Nabil Seddigh wrote:
> As a side note, by the end of this month,  the TSWTCM will be available
> in BSD's ALTQ  (thanks to Kenjiro Cho) and in Linux Diffserv  
> (thanks to Jamal Hadi Salim).

TSWTCM is added to ALTQ, and available for FreeBSD, NetBSD and OpenBSD
through KAME IPv6 snap-kit.
(ALTQ is being developed under the KAME CVS repository so that TSWTCM
isn't in the ALTQ release yet.)
KAME http://www.kame.net/
ALTQ http://www.csl.sony.co.jp/~kjc/software.html

I should add that implementing TSWTCM was straightforward, and
probabilistic marking seems to be able to achieve the rate close to
the target rate (over enough number of samples).

Please direct further discussion on implementation issues
to dsimplementation@atnf.CSIRO.AU
or
to diffserv-interest@external.cisco.com.

-Kenjiro

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From diffserv-admin@ietf.org  Tue Feb  8 10:30:56 2000
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From: Tamas Varga <Tamas.Varga.II@eth.ericsson.se>
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Dear DIFFSERVers,
would you inform me where do I find the definitions for INET-ENDPOINT-MIB?
I searched among RFCs and some drafts but I could not find the MIB
referenced in the IMPORT section of diffserv-mib-01.txt. Please give me
a pointer to this document.
Best regards,
Tom Varga


   DIFF-SERV-MIB DEFINITIONS ::= BEGIN
      IMPORTS
      Unsigned32, Counter32, Counter64, OBJECT-TYPE,
      MODULE-IDENTITY, zeroDotZero, mib-2          FROM SNMPv2-SMI
      TEXTUAL-CONVENTION, RowStatus, RowPointer, TestAndIncr
                                                   FROM SNMPv2-TC
      MODULE-COMPLIANCE, OBJECT-GROUP              FROM SNMPv2-CONF
      ifIndex                                      FROM IF-MIB;
      InetEndpointType, InetEndpoint               FROM INET-ENDPOINT-MIB;
 -------------------------------------------------------^^^^^^^^^^^^^^^^^


-- 
Tamas VARGA - PhD Student                    
  Technical University of Budapest                  phone: +36-1-437-7087
   High Speed Networks Laboratory         http://hsnlab.ttt.bme.hu/~varga
  ERICSSON Hungary, Traffic Lab     mailto:Tamas.Varga.II@eth.ericsson.se

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From diffserv-admin@ietf.org  Tue Feb  8 11:07:14 2000
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Date: Tue, 08 Feb 2000 10:20:46 -0500
To: Tamas Varga <Tamas.Varga.II@eth.ericsson.se>
From: Kwok Ho Chan <khchan@NortelNetworks.com>
Subject: Re: [Diffserv] INET-ENDPOINT-MIB reference in Diffserv MIB
Cc: diffserv@ietf.org
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Tom:
The INET-ENDPOINT-MIB has been changed to INET-ADDRESS-MIB.
Its reference is in draft-ops-endpoint-mib-06.txt.

This change is reflected in draft-ietf-diffserv-mib-02.txt,
currently under review by the co-authors.
-- Kwok --

 
At 03:52 PM 2/8/00 +0100, Tamas Varga wrote:
>Dear DIFFSERVers,
>would you inform me where do I find the definitions for INET-ENDPOINT-MIB?
>I searched among RFCs and some drafts but I could not find the MIB
>referenced in the IMPORT section of diffserv-mib-01.txt. Please give me
>a pointer to this document.
>Best regards,
>Tom Varga
>
>
>   DIFF-SERV-MIB DEFINITIONS ::= BEGIN
>      IMPORTS
>      Unsigned32, Counter32, Counter64, OBJECT-TYPE,
>      MODULE-IDENTITY, zeroDotZero, mib-2          FROM SNMPv2-SMI
>      TEXTUAL-CONVENTION, RowStatus, RowPointer, TestAndIncr
>                                                   FROM SNMPv2-TC
>      MODULE-COMPLIANCE, OBJECT-GROUP              FROM SNMPv2-CONF
>      ifIndex                                      FROM IF-MIB;
>      InetEndpointType, InetEndpoint               FROM INET-ENDPOINT-MIB;
> -------------------------------------------------------^^^^^^^^^^^^^^^^^
>
>
>-- 
>Tamas VARGA - PhD Student                    
>  Technical University of Budapest                  phone: +36-1-437-7087
>   High Speed Networks Laboratory         http://hsnlab.ttt.bme.hu/~varga
>  ERICSSON Hungary, Traffic Lab     mailto:Tamas.Varga.II@eth.ericsson.se
>
>_______________________________________________
>diffserv mailing list
>diffserv@ietf.org
>http://www.ietf.org/mailman/listinfo/diffserv
>Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/
>
>
>

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From diffserv-admin@ietf.org  Tue Feb  8 13:59:21 2000
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From: "Bert Wijnen" <WIJNEN@vnet.ibm.com>
To: Tamas.Varga.II@eth.ericsson.se, diffserv@ietf.org
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Ref:  Your note of Tue, 08 Feb 2000 15:52:39 +0100

Subject: Re:   [Diffserv] INET-ENDPOINT-MIB reference in Diffserv MIB

Look at: drafts-ops-endpoint-mib-06.txt (rev 7 expected soon)

Bert

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confirm 821511

Thanks,

Dennis Hayes           Office   #  609-727-3226 
Redback Networks        Mobile #  609-413-3604
email: dhayes@redback.com 
http://www.redback.com/


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<html><br>
<div>confirm 821511</div>
<br>

Thanks,<br>
<br>
Dennis Hayes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Office&nbsp;&nbsp; #&nbsp; 609-727-3226 <br>
Redback
Networks<x-tab>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</x-tab>Mobile
#&nbsp; 609-413-3604<br>
email: dhayes@redback.com <br>
<font color="#0000FF"><u><a href="http://www.redback.com/" eudora="autourl">http://www.redback.com/<br>
<br>
</a></font></u></html>

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From diffserv-admin@ietf.org  Wed Feb  9 02:18:54 2000
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Sorry for the delayed response to this one ...

> Then I would also like to see a paper on how ipsec in tunnel mode over
> diffserv should be handled at the same time in FB. Or is there any work
> already done on this?

The goal is to make ipsec tunnels orthogonal to the diffserv model to
the extent possible.  Some details can be found in 
draft-black-diffserv-tunnels-00.txt, which will be revised to appear
as a WG draft sometime this month (final warning - get comments about
what you do and don't like in now ;-) ).  --David

---------------------------------------------------
David L. Black, Senior Technologist
EMC Corporation, 42 South St., Hopkinton, MA  01748
+1 (508) 435-1000 x75140, FAX: +1 (508) 497-6909
black_david@emc.com  Cellular: +1 (978) 394-7754
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From diffserv-admin@ietf.org  Wed Feb  9 06:26:42 2000
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--------------797C8960959176BF836732CF
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Hi,

I have questions.

1. In Ingress Node,  Packet marking as IN packet its sending rate within
Service profile rate or
OUT packet excceding  Service profile rate.
Then How marking other best-effort packets ?

Regrads,
- Jin Han

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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<font size=-1>Hi,</font><font size=-1></font>
<p><font size=-1>I have questions.</font><font size=-1></font>
<p><font size=-1>1. In Ingress Node,&nbsp; Packet marking as IN packet
its sending rate within Service profile rate or&nbsp;</font>
<br><font size=-1>OUT packet excceding&nbsp; Service profile rate.</font>
<br><font size=-1>Then How marking other best-effort packets ?</font><font size=-1></font>
<p><font size=-1>Regrads,</font>
<br><font size=-1>- Jin Han</font></html>

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From diffserv-admin@ietf.org  Wed Feb  9 06:33:29 2000
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Hi,
I have questions.
In current Differentiated Services,
According to PHB, Interior Node have multiple queues.
1. Which is as active buffer management in each queue ? ( rio or red )
If answer  is RIO, What is differentiation RIO with multiple queue or
WRED
(Weighted RED) ?

2. Best-effort flows map to Default PHB.
Then have other queue.
Which is active buffer mangement in Default PHB ?

Regrads,
- Jin Han




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From diffserv-admin@ietf.org  Wed Feb  9 14:36:54 2000
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From: demir <demir@usc.edu>
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Subject: Re: [Diffserv] Diffserv ns-2 
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Does anyone have Difserv contributed code to ns-2? 

Alper K. Demir, PhD student
University of Southern California
Computer Science Dept.
LA, CA





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From diffserv-admin@ietf.org  Wed Feb  9 14:56:03 2000
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From: Tarik Alj <aljtarik@ozias.inrs-telecom.uquebec.ca>
Reply-To: Tarik Alj <aljtarik@ozias.inrs-telecom.uquebec.ca>
Subject: Re: [Diffserv] Diffserv ns-2 
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Please see :

http://www.teltec.dcu.ie/%7Emurphys/ns-work/

for diffserv modules contributed to ns by Sean Murphy. 

for ns pointers in general:

http://www-mash.cs.berkeley.edu/ns

http://www.ee.surrey.ac.uk/Personal/L.Wood/ns/

> 
> Does anyone have Difserv contributed code to ns-2? 
> 
> Alper K. Demir, PhD student
> University of Southern California
> Computer Science Dept.
> LA, CA
> 

Tarik


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That's a question for the implementation list

http://www.atnf.csiro.au/news/exploders/dsimplementation.html
(but the server isn't responding right now)

   Brian Carpenter
   Diffserv co-chair

demir wrote:
> 
> Does anyone have Difserv contributed code to ns-2?
> 
> Alper K. Demir, PhD student
> University of Southern California
> Computer Science Dept.
> LA, CA
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/

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From diffserv-admin@ietf.org  Wed Feb  9 15:58:46 2000
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From: Shahram Davari <Shahram_Davari@pmc-sierra.com>
To: "'Bae Jin Han'" <jhbae@cslab5.korea.ac.kr>, diffserv@ietf.org
Subject: RE: [Diffserv] Question 1.
Date: Wed, 9 Feb 2000 12:20:16 -0800 
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Hi,

> -----Original Message-----
> From: Bae Jin Han [mailto:jhbae@cslab5.korea.ac.kr]
> Sent: Wednesday, February 09, 2000 5:51 AM
> To: diffserv@ietf.org
> Subject: [Diffserv] Question 1.
> 
> 
> Hi,
> I have questions.
> In current Differentiated Services,
> According to PHB, Interior Node have multiple queues.
> 1. Which is as active buffer management in each queue ? ( rio or red )

This is not specified or enforced by Diffserv WG. You may use any active
queue management that you like.

> If answer  is RIO, What is differentiation RIO with multiple queue or
> WRED
> (Weighted RED) ?

As far as I know in RIO the queue size for each drop precedence consists
only of that type of packets + all lower drop precedence packets, while in
WRED a single queue size which is the actual queue size is used for all drop
precedence. Also WRED uses a value of 2^(-n) for the probability of
dropping.

> 
> 2. Best-effort flows map to Default PHB.
> Then have other queue.
> Which is active buffer management in Default PHB ?
> 
> Regrads,
> - Jin Han
> 
> 

You can use the same RIO or WRED or ... that you use for other queues.

> 
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/
> 

Regards,
Shahram

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From diffserv-admin@ietf.org  Wed Feb  9 16:06:15 2000
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From: Shahram Davari <Shahram_Davari@pmc-sierra.com>
To: "'Bae Jin Han'" <jhbae@cslab5.korea.ac.kr>, diffserv@ietf.org
Subject: RE: [Diffserv] Question 2
Date: Wed, 9 Feb 2000 12:29:52 -0800 
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Hi,
 
You can Mark them as BE. You don't need to police in that case. BE queue
will have only one type of packet (you may think of them being IN).
 
_Shahram

-----Original Message-----
From: Bae Jin Han [mailto:jhbae@cslab5.korea.ac.kr]
Sent: Wednesday, February 09, 2000 6:00 AM
To: diffserv@ietf.org
Subject: [Diffserv] Question 2


Hi, 

I have questions. 


1. In Ingress Node,  Packet marking as IN packet its sending rate within
Service profile rate or  
OUT packet excceding  Service profile rate. 
Then How marking other best-effort packets ? 


Regrads, 
- Jin Han 


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From diffserv-admin@ietf.org  Wed Feb  9 18:54:56 2000
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Date: Thu, 10 Feb 2000 10:30:38 +1100 (EST)
From: Muneyb Minhazuddin <Muneyb.Minhazuddin@tip.csiro.au>
To: Brian E Carpenter <brian@hursley.ibm.com>
cc: diffserv@ietf.org, dsimplemenation@tip.csiro.au
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Brian,

The dsimplemenation server is alive and working. I noted that there were a
list of mails in diffserv-interest list addressed to dsimplementation list
but did not make it to the list as the author of the first mail 
(subject : Diffserv Based IP Services Dated 28th Jan)

had got the email address wrong he had addressed his mail to

dsimplementatio@atnf.csiro.au (had missed the n)

And the subsequent replies had the same error.

Regards 
Muneyb.
Owner dsimplementation list.

On Wed, 9 Feb 2000, Brian E Carpenter wrote:

> That's a question for the implementation list
> 
> http://www.atnf.csiro.au/news/exploders/dsimplementation.html
> (but the server isn't responding right now)
> 
>    Brian Carpenter
>    Diffserv co-chair



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From diffserv-admin@ietf.org  Fri Feb 11 17:56:29 2000
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To: IETF-Announce: ;
Cc: diffserv@ietf.org
From: The IESG <iesg-secretary@ietf.org>
Reply-to: iesg@ietf.org
Date: Fri, 11 Feb 2000 16:18:40 -0500
Subject: [Diffserv] Last Call: Per Hop Behavior Identification Codes to Proposed
 Standard
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The IESG has received a request from the Differentiated Services
Working Group to consider Per Hop Behavior Identification Codes
<draft-ietf-diffserv-phbid-00.txt> as a Proposed Standard.

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action.  Please send any comments to the
iesg@ietf.org or ietf@ietf.org mailing lists by February 25, 2000.

Files can be obtained via
http://www.ietf.org/internet-drafts/draft-ietf-diffserv-phbid-00.txt


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From diffserv-admin@ietf.org  Wed Feb 16 08:37:40 2000
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Subject: [Diffserv] I-D ACTION:draft-ietf-diffserv-ba-def-00.txt
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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Differentiated Services Working Group of the IETF.

	Title		: Definition of Differentiated Services Behavior 
                          Aggregates and Rules for their Specification
	Author(s)	: K. Nichols, B. Carpenter 
	Filename	: draft-ietf-diffserv-ba-def-00.txt
	Pages		: 15
	Date		: 15-Feb-00
	
The diffserv WG has defined the general architecture for differen-
tiated services (RFC 2475) and has been focused on the definition 
and standardization of the 'per-hop forwarding behaviors' (or 
PHBs) required in routers (RFCs 2474, 2597, and 2598). The dif-
ferentiated services framework creates services within a network 
by applying rules at the edges in the creation of traffic aggregates 
(known as Behavior Aggregates) coupled with the forwarding 
path behavior. The WG has also discussed the behavior required 
at diffserv network edges or boundaries for conditioning the 
aggregates, elements such as policers and shapers [MODEL, 
MIB]. A major feature of diffserv is that only the components 
applying the rules at the edge need to be changed in response to 
short-term changes in QoS goals in the network, rather than 
The next step for the WG is to lay out how the forwarding path 
components (PHBs, classifiers, and traffic conditioners) can be 
used within the architectural framework to compose specific 
Behavior Aggregates. These BAs should have properties such that 
the transit of individual packets of a BA through a differentiated 
services network can be characterized by specific metrics. How-
ever, no microflow information should be required as packets 
transit a differentiated services network. 
This document defines and discusses Behavior Aggregates in 
detail and lays out the format and required content for contribu-
tions to the Diffserv WG on BAs and the rules that will be applied 
for individual BA specifications to advance as WG products. This 
format is specified to expedite working group review of BA sub-
missions.
A pdf version of this document is available at:
ftp://ftp-eng.cisco.com/ftp/kmn-group/docs/ba_def.pdf.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-diffserv-ba-def-00.txt

Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
	"get draft-ietf-diffserv-ba-def-00.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


Internet-Drafts can also be obtained by e-mail.

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From diffserv-admin@ietf.org  Wed Feb 16 16:32:52 2000
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I'm responding as I'm reading the draft.  There is another sentence
cutoff at the end of the first paragraph of the Introduction section.
As I browse the draft it appears that text is getting cutoff along
page boundaries.

BTW, I'm reading this draft from:

http://www.ietf.org/internet-drafts/draft-ietf-diffserv-ba-def-00.txt

George Uhl
 
> 
> The last sentence in the first paragraph of the Abstract is incomplete:
> 
> A major feature of diffserv is that only the components 
> applying the rules at the edge need to be changed in response to 
> short-term changes in QoS goals in the network, rather than 
> 
> 
> George Uhl
> 



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From diffserv-admin@ietf.org  Wed Feb 16 16:43:52 2000
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Date: Wed, 16 Feb 2000 14:31:46 -0500
From: George Uhl <uhl@mamba-e.gsfc.nasa.gov>
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The last sentence in the first paragraph of the Abstract is incomplete:

A major feature of diffserv is that only the components 
applying the rules at the edge need to be changed in response to 
short-term changes in QoS goals in the network, rather than 


George Uhl


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Yes, there is a formatting error at the end of each page.
Kathie will fix it.

  Brian

George Uhl wrote:
> 
> The last sentence in the first paragraph of the Abstract is incomplete:
> 
> A major feature of diffserv is that only the components
> applying the rules at the edge need to be changed in response to
> short-term changes in QoS goals in the network, rather than
> 
> George Uhl
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/

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From diffserv-admin@ietf.org  Wed Feb 16 18:03:24 2000
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From: demir <demir@usc.edu>
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Subject: Re: [Diffserv] I-D ACTION:draft-ietf-diffserv-ba-def-00.txt
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Oops. It should be:
A pdf version of this document is available at:
ftp://ftp-eng.cisco.com/ftp/kmn-group/docs/BA_def.pdf

Alper K. Demir




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From diffserv-admin@ietf.org  Wed Feb 16 18:16:54 2000
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A number of issues, questions and concerns.  First the minor mechanical 
hassles, then the broad implications, then a lot of things that need 
clarification.

1) ERROR 432 -- The URL you requested could not be fetched. 

This means that: 

ftp/kmn-group/docs/ba_def.pdf: No such file or directory. 

2) As George Uhl noted, text got lost at page breaks in the .txt version.

3) The semantics of a BA seems to have changed between RFC 2475 and this 
draft.  The definition ("... crossing a link in a particular direction") 
pretty clearly (at least in my mind) implies that its scope is hop-by-hop.  In 
the draft, it seems to be a kind of odd beast which isn't quite end-to-end, 
nor is it hop-by-hop.  Flows can apparently join and leave a BA anywhere in 
the DS domain.  In fact, it looks like this draft is looking do redefine a BA 
to be some kind of a spanning tree of the DS domain.  Would the authors 
explain?  

4) The draft seems to have gotten religion about measurable, quantifiabile, 
characteristics, for which I applaud it.  It does seem a bit difficult to 
reconcile this with the relative PHBs, as in the legacy class selectors and to 
a lesser extent AF.  

5) On a related topic, most of parameters  will be quite sensitive to network 
topology, route selected and link characteristics, as well as the capabilities 
and configuration of the DS nodes on the path.  What I think we're saying is 
that each the value for each measureable, quantifiable parameter is in fact 
the worst case of any path along the spanning tree.  Or, actually, the worst 
spanning tree that could possibly result from a route flap.   Which might be 
quite a bit worse than it would actually be for many feasible paths.  Or, in 
another words, the parameter values experienced by  two flows belonging to the 
same BA, which enter and/or leave the DS domain at different DS edges may 
differ considerably.

6) The draft explicitly refers to pinned routes from time to time, and hints 
at them elsewhere.  Except for MPLS, do any standards track RFCs allow for 
route pinning?

7) Can anybody think of an example of a parameter which is absolute, rather 
than bounded?  We couldn't do that with ATM, despite its very fine-grained 
mechanisms and conservative approach to aggregation.

8)  I assume that it's intended that a central assumption is that each flow 
will be shaped to the agreed TCA before it enters the DS domain and policed at 
the DS edge node;  otherwise, the parameters of the BA do not obtain.

9) The authors clearly have in mind some kind of relationship between a 
service and a BA.  It is not clear to me what that might be.  Can a BA can be 
made to carry multiple services?  Is it possible for more than one BA to have 
the same PHB (i.e., with different DSCPs) such that the edge-to-edge 
characteristics experienced by packets belonging to the BAs might differ?  If 
not, do we not implicitly limit the number of distinct services that can be 
offered by a DS domain? How will defining BAs address the difficulties the 
group (and also ISSL and the ATM Forum) has been struggling with in not having 
services in its charter?

10) There is a critical point in the introduction: 
 If the properties of a BA using a particu-
 lar PHB hold regardless of how the aggregate mutates as it 
 traverses the domain, then that BA scales. If there are limits to 
 where the properties hold, that translates to a limit on the size or 
 topology of a DS domain that can use that BA. Although useful 
 single-link BAs might exist, BAs that are invariant with network 
 size or that have simple relationships with network size and 
 whose properties can recovered by reapplying rules (that is, form-
 ing another diffserv boundary or edge to re-enforce the rules for 
 the aggregate) are needed for building scalable end-to-end quality 
 of service."
How do we know that the existing PHBs allow construction of BAs that have this 
property?

I'll get back with the clarifications on specific words in the text tomorrow.

Dan



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From diffserv-admin@ietf.org  Thu Feb 17 14:16:37 2000
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Dan,

...
> 3) The semantics of a BA seems to have changed between RFC 2475 and this
> draft.  The definition ("... crossing a link in a particular direction")
> pretty clearly (at least in my mind) implies that its scope is hop-by-hop.  In
> the draft, it seems to be a kind of odd beast which isn't quite end-to-end,
> nor is it hop-by-hop.  Flows can apparently join and leave a BA anywhere in
> the DS domain.  In fact, it looks like this draft is looking do redefine a BA
> to be some kind of a spanning tree of the DS domain.  Would the authors
> explain?

I don't think the original concept of BA was intended to be a single hop;
if that's what 2475 says we may need to adjust it. Yes, the "new" BA is
edge to edge of a DS network.

> 
> 4) The draft seems to have gotten religion about measurable, quantifiabile,
> characteristics, for which I applaud it.  It does seem a bit difficult to
> reconcile this with the relative PHBs, as in the legacy class selectors and to
> a lesser extent AF.

That would lead to soft metrics.

> 
> 5) On a related topic, most of parameters  will be quite sensitive to network
> topology, route selected and link characteristics, as well as the capabilities
> and configuration of the DS nodes on the path.  What I think we're saying is
> that each the value for each measureable, quantifiable parameter is in fact
> the worst case of any path along the spanning tree.  Or, actually, the worst
> spanning tree that could possibly result from a route flap.   Which might be
> quite a bit worse than it would actually be for many feasible paths.  Or, in
> another words, the parameter values experienced by  two flows belonging to the
> same BA, which enter and/or leave the DS domain at different DS edges may
> differ considerably.

I think that will depend on the BA.

> 
> 6) The draft explicitly refers to pinned routes from time to time, and hints
> at them elsewhere.  Except for MPLS, do any standards track RFCs allow for
> route pinning?

I don't think so; the QOS Routing RFC certainly discusses this issue.

> 
> 7) Can anybody think of an example of a parameter which is absolute, rather
> than bounded?  We couldn't do that with ATM, despite its very fine-grained
> mechanisms and conservative approach to aggregation.
> 
> 8)  I assume that it's intended that a central assumption is that each flow
> will be shaped to the agreed TCA before it enters the DS domain and policed at
> the DS edge node;  otherwise, the parameters of the BA do not obtain.

Yes

> 
> 9) The authors clearly have in mind some kind of relationship between a
> service and a BA.  

Er, not consciously.

   Brian

It is not clear to me what that might be.  Can a BA can be
> made to carry multiple services?  Is it possible for more than one BA to have
> the same PHB (i.e., with different DSCPs) such that the edge-to-edge
> characteristics experienced by packets belonging to the BAs might differ?  If
> not, do we not implicitly limit the number of distinct services that can be
> offered by a DS domain? How will defining BAs address the difficulties the
> group (and also ISSL and the ATM Forum) has been struggling with in not having
> services in its charter?
> 
> 10) There is a critical point in the introduction:
>  If the properties of a BA using a particu-
>  lar PHB hold regardless of how the aggregate mutates as it
>  traverses the domain, then that BA scales. If there are limits to
>  where the properties hold, that translates to a limit on the size or
>  topology of a DS domain that can use that BA. Although useful
>  single-link BAs might exist, BAs that are invariant with network
>  size or that have simple relationships with network size and
>  whose properties can recovered by reapplying rules (that is, form-
>  ing another diffserv boundary or edge to re-enforce the rules for
>  the aggregate) are needed for building scalable end-to-end quality
>  of service."
> How do we know that the existing PHBs allow construction of BAs that have this
> property?
> 
> I'll get back with the clarifications on specific words in the text tomorrow.
> 
> Dan
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/

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From diffserv-admin@ietf.org  Thu Feb 17 15:50:27 2000
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Subject: Re: [Diffserv] I-D ACTION:draft-ietf-diffserv-ba-def-00.txt 
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> Dan,
> 
> ...
> > 3) The semantics of a BA seems to have changed between RFC 2475 and this
> > draft.  The definition ("... crossing a link in a particular direction")
> > pretty clearly (at least in my mind) implies that its scope is hop-by-hop.  In
> > the draft, it seems to be a kind of odd beast which isn't quite end-to-end,
> > nor is it hop-by-hop.  Flows can apparently join and leave a BA anywhere in
> > the DS domain.  In fact, it looks like this draft is looking do redefine a BA
> > to be some kind of a spanning tree of the DS domain.  Would the authors
> > explain?
> 
> I don't think the original concept of BA was intended to be a single hop;
> if that's what 2475 says we may need to adjust it. Yes, the "new" BA is
> edge to edge of a DS network.
It wasn't clear, but certainly implied.  Next questions:  is there such a 
thing as a 'unicast' or a 'multicast' BA?  If so, can a unicast BA have more 
than one ingress edge node or more than one egress edge node?
> > 
> > 4) The draft seems to have gotten religion about measurable, quantifiabile,
> > characteristics, for which I applaud it.  It does seem a bit difficult to
> > reconcile this with the relative PHBs, as in the legacy class selectors and to
> > a lesser extent AF.
> 
> That would lead to soft metrics.
Um, what is a 'soft' metric?  
> > 
> > 5) On a related topic, most of parameters  will be quite sensitive to network
> > topology, route selected and link characteristics, as well as the capabilities
> > and configuration of the DS nodes on the path.  What I think we're saying is
> > that each the value for each measureable, quantifiable parameter is in fact
> > the worst case of any path along the spanning tree.  Or, actually, the worst
> > spanning tree that could possibly result from a route flap.   Which might be
> > quite a bit worse than it would actually be for many feasible paths.  Or, in
> > another words, the parameter values experienced by  two flows belonging to the
> > same BA, which enter and/or leave the DS domain at different DS edges may
> > differ considerably.
> 
> I think that will depend on the BA.
Can you elaborate?
> > 
> > 6) The draft explicitly refers to pinned routes from time to time, and hints
> > at them elsewhere.  Except for MPLS, do any standards track RFCs allow for
> > route pinning?
> 
> I don't think so; the QOS Routing RFC certainly discusses this issue.
Is this a problem?  As in are we relying on mechanisms that don't exist?
> > 
> > 9) The authors clearly have in mind some kind of relationship between a
> > service and a BA.  
> 
> Er, not consciously.
Then how do BAs support services?  Or, rather, TCAs?
 
> It is not clear to me what that might be.  Can a BA can be
> > made to carry multiple services?  Is it possible for more than one BA to have
> > the same PHB (i.e., with different DSCPs) such that the edge-to-edge
> > characteristics experienced by packets belonging to the BAs might differ?  If
> > not, do we not implicitly limit the number of distinct services that can be
> > offered by a DS domain? How will defining BAs address the difficulties the
> > group (and also ISSL and the ATM Forum) has been struggling with in not having
> > services in its charter?




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From diffserv-admin@ietf.org  Thu Feb 17 15:53:21 2000
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In-reply-to: Your message of "Wed, 16 Feb 2000 17:15:47 EST."
             <200002162215.RAA12732@noah.dma.isg.mot.com> 
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In addition to the broader questions I raised yesterday, there are a number of 
points in the draft which need clarification. This is not exhaustive, and I'm 
sure to have more later.

> customers any more than the specific PHBs employed in the pro-
> vider's network would be. QoS providers are expected to select 
> their own measures to make customer-visible in contracts and 
What's a "QoS provider"?  Is this a service provider that offers SLAs?  Or is 
it something else?

> puted. The filled in boxes in figure 1 represent the conformance 
> ensurers (e.g., shapers) and conformance enforcers (e.g., polic-
> ers). Although we expect that policers and shapers will be 
Why do we need these new terms "conformance ensurer" and "conformance 
enforcer"? 

> Associated with each BA are measurable, quantifiable, character-
> istics which can be used to describe what will happen to packets 
> of that BA as they cross the DS domain.
It's difficult to talk about these characteristics in terms of what will 
happen to individual packets, rather than flows.  Rather, these are 
characteristics which are measured over a (stastistically significant sample 
of a) flow.    

> Explicit expressions of 
> what happens to this behavior under aggregation, possibly param-
> eterized by node in-degrees or network diameters are required. 
After a couple of attempts, I was finally able to parse this sentence.  But 
what are "node in-degrees"?

> Rules must be recursively applied to result in a 
> known behavior.
I assume that this means 'interior rules', which aren't discussed before this 
point.


> Behavior Aggregates arise from a particular relationship between 
> edge and interior (which may be parameterized). 
I don't understand this statement.  What kind of relationship are we talking 
about?  What is the significance of 'arising'?  What kinds of parameters 
affect such a relationship?

Also, I'm beginning to think that there is a blurring between a _Type_ of BA 
(as in the thing specified in one of these specifications) and an _Instance_ 
of a BA (occurring in a DS domain).  It would be helpful if the authors made 
it clear which of these they are discussing at various points in the draft.

> The characteristics of a BA tell how it behaves under ideal condi-
> tions if configured in a specified manner (where the specification 
> may be parameterized). Characteristics of a BA might be drop 
> rate, throughput, delay bounds measured over some time period. 
That should be drop rate bounds -- I can't imagine a use for a service that 
drops exactly 10^x packets, no more and no less, will be dropped, much less 
mechanisms to support it.

> The definition and characteristics of a BA MAY be parameterized 
> by network-specific features; for example, maximum number of 
> hops, minimum bandwidth, total number of entry/exit points of 
> the BA to/from the diffserv network, maximum transit delay of 
> network elements, minimum buffer size available for the BA at a 
> network node, etc.
I'm not clear on the intent of this.  These kinds of things obviously affect 
the characteristics of the BA, but seem to be more in the nature of 
provisioning considerations.  Is this part of the distinction between BAs and 
services?

> For short-time behavior, 
> we are interested primarily in two things: 1) how many back-to-
> back packets of this BA will we see at any point (this would be 
> metered as a burst) and 2) how large a burst of packets of this BA 
> can appear in a queue at once (gives queue overflow and loss).
This sentence leaves me with more questions than it answers.  Starting with 
point-of-reference:  where will "we" be observing to "see" back-to-back 
packets?  Particularly considering the apparently spanning tree nature of a BA 
instance.  What are the causal relationships?  Is it something along the lines 
of "the application of the traffic conditioners plus the edge rules plus the 
interior rules cause the number of back-to-back packets in the burst to be 
bounded by x, where x is an objective, and the edge rules, interior rules and 
traffic conditioners will be engineered such that the objective x will be met?"

> 6.2 Considerations in specifying short-term or bursty BA
>        characteristics
I find this example to be  confusing.  It now appears that all flows in BAx 
transit link L.  I thought I'd understood that this was not necessarily the 
case, and that a BA could contain flows with multiple ingress edges and 
multiple egress edges, even if it was unicast?  

> Flows of 
> BAx packets from the N uplinks each have average rate R and are 
> destined to cross L.
Is that "each are conditioned to have an average rate R" or "are assumed 
(based on historical measurements or traffic models) to have an average rate 
R"?  ALso note that the example assumes that all packets are MTU sized, which 
is a worst case (but probably not a realistic worst case).

Incidentally, once the mechanical problems with the .pdf file got sorted out, 
I found it infinitely more readable than the .txt version.  I hope that this 
is some kind of experiement in updating the IETF's obsolescent documentation 
formatting guidelines.


Changing hats, if any of these new terms are truly needed, or if we have to 
redefine/clarify terms like "behavior aggregate",  would the authors provide 
me with definitions for the terminology draft? 


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From diffserv-admin@ietf.org  Fri Feb 18 01:45:08 2000
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Yes, Kathie will fix it. But not till I get back from vacation
next week I think. I'll post if there is some way I can get it
fixed before then.

	Kathie

Brian E Carpenter wrote:
> 
> Yes, there is a formatting error at the end of each page.
> Kathie will fix it.
> 
>   Brian
> 
> George Uhl wrote:
> >
> > The last sentence in the first paragraph of the Abstract is incomplete:
> >
> > A major feature of diffserv is that only the components
> > applying the rules at the edge need to be changed in response to
> > short-term changes in QoS goals in the network, rather than
> >
> > George Uhl
> >
> > _______________________________________________
> > diffserv mailing list
> > diffserv@ietf.org
> > http://www.ietf.org/mailman/listinfo/diffserv
> > Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/
> 
> _______________________________________________
> diffserv mailing list
> diffserv@ietf.org
> http://www.ietf.org/mailman/listinfo/diffserv
> Archive: http://www-nrg.ee.lbl.gov/diff-serv-arch/

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From diffserv-admin@ietf.org  Fri Feb 18 01:56:08 2000
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First, apologies for the problems in the draft. We felt it was
overdue and I wanted to get it out and shipped it just before
spending all day in a meeting then going on vacation (which
is where I am now, so I won't go into depth on all of this.

But, Dan's notes compel me to respond to two things.

First, using a descriptive phrase does not mean we are inventing
"new terminology"; in fact, it sometimes means that we are
conciously avoiding the use of "terminology".

Dan Grossman wrote:
> 
....
> > >
> > > 6) The draft explicitly refers to pinned routes from time to time, and hints
> > > at them elsewhere.  Except for MPLS, do any standards track RFCs allow for
> > > route pinning?
> >
> > I don't think so; the QOS Routing RFC certainly discusses this issue.
> Is this a problem?  As in are we relying on mechanisms that don't exist?
> > >

The use of any reference to this was merely to state that IF
a BA were relying on some sort of "pinned" routes (and we wanted
to be general here), the description should explicitly say so.
That is ALL. I'd be interested to hear if this is a widely
shared view, that the document is somehow advocating or assuming
them, so that we can fix this in the next revsision.

	Kathie

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From diffserv-admin@ietf.org  Fri Feb 18 11:58:36 2000
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For those who want the PDF version of the BA draft, without the formatting
error, here is the URL again. It's case sensitive

ftp://ftp-eng.cisco.com/ftp/kmn-group/docs/BA_def.pdf


   Brian

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From diffserv-admin@ietf.org  Mon Feb 21 08:25:40 2000
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Dear sir : 
I am Sam , post graduate student , master program 
in cairo university , egypt. 
and interested 
in the Diffserv and its features , 
so i am trying to simulate the diffserv , to make an 
analysis of the performance of diffserv , 
i am already using OPNET , but it does not support 
all the new components in diffserv , 
so can you help me about the simulation of these
components of diffserv , 
or if you know someone who may help me 

thanx for reading this message , 

yours sincerly , 
sam  ibrahim 





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From diffserv-admin@ietf.org  Tue Feb 22 07:47:11 2000
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Subject: [Diffserv] COPS and QoS
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Introducing Europe's leading IP QoS event for 2000
             The Global IP QoS Summit, London Marriott, 15th-17th March 2000
             http://www.ibctelecoms.com/ipqos2000

Examining optimal policy-based architectures and latest developments in the COPS protocol.
Speaker: Shai Herzog, co-author of COPS
             Keys to successul MPLS deployment
Speaker: Vijay Srinivasan, Chairman MPLS WG
             Parameters for measuring QoS in large IP networks
Speaker: Bob Mandeville, Author of IETF's switch testing spec
             Implementing DiffServ using the Assured Precedence PHB Group
Juha Heinanen, CTO Telia and DiffServ WG
             Plus: The carrier strategies for end-to-end QoS provision
speakers:
Mika Uusitalo, CTO, Sonera
Jack Ziros, VP IP Services, GlobalOne
Henjo Groenewegen, COO KPNQWest
             and many others
             visit us online at  http://www.ibctelecoms.com/ipqos2000
or email  Dr. Gustavo Martin  gustavo.martin@ibcuk.co.uk
                          

This is an Email from the Informa Group. Its contents are confidential to
the intended recipient at the Email address to which it has been addressed.
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From diffserv-admin@ietf.org  Tue Feb 22 11:34:43 2000
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Gustavo,

Please do not use the diffserv WG mailing list for advertising. This list
is only for discussion of the business of the working group.

Thanks

   Brian Carpenter
   diffserv co-chair

gustavo.martin@informa.com wrote:
> 
> Introducing Europe's leading IP QoS event for 2000
...


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From diffserv-admin@ietf.org  Tue Feb 22 15:44:17 2000
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Date: Tue, 22 Feb 2000 11:16:54 -0800
From: Kathleen Nichols <kmn@cisco.com>
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Folks,
I've sent a corrected text version of ba-def in. Also, the pdf version
has been aliased so that you can ftp it with either name.

	Kathie

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@@@@@@@@@@@@@@@@@@@@@@@@@@@

Kari Kuosa, TeleWare Oy
Itakeskuksen Maamerkki, FI-00930 Helsinki 
tel:+358 9 34349125, mobile:+358 40 521 4281
Internet:Kari.Kuosa@teleware.fi
@@@@@@@@@@@@@@@@@@@@@@@@@@@


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From diffserv-admin@ietf.org  Wed Feb 23 07:07:44 2000
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--NextPart

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Differentiated Services Working Group of the IETF.

	Title		: Definition of Differentiated Services Behavior 
                          Aggregates and Rules for their Specification
	Author(s)	: K. Nichols, B. Carpenter
	Filename	: draft-ietf-diffserv-ba-def-01.txt
	Pages		: 15
	Date		: 22-Feb-00
	
The diffserv WG has defined the general architecture for differen-
tiated services (RFC 2475) and has been focused on the definition 
and standardization of the 'per-hop forwarding behaviors' (or 
PHBs) required in routers (RFCs 2474, 2597, and 2598). The dif-
ferentiated services framework creates services within a network 
by applying rules at the edges in the creation of traffic aggregates 
(known as Behavior Aggregates) coupled with the forwarding 
path behavior. The WG has also discussed the behavior required 
at diffserv network edges or boundaries for conditioning the 
aggregates, elements such as policers and shapers [MODEL, 
MIB]. A major feature of diffserv is that only the components 
applying the rules at the edge need to be changed in response to 
short-term changes in QoS goals in the network, rather than 
reconfiguring the interior behaviors.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-diffserv-ba-def-01.txt

Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
	"get draft-ietf-diffserv-ba-def-01.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


Internet-Drafts can also be obtained by e-mail.

Send a message to:
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From diffserv-admin@ietf.org  Mon Feb 28 20:36:20 2000
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Message-ID: <38BB188A.7FBFB9D9@cisco.com>
Date: Mon, 28 Feb 2000 16:53:30 -0800
From: Kathleen Nichols <kmn@cisco.com>
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Please send me your requests for agenda space by March 10. Please
mention
the relevant draft title. Actual allocation of time and space will also
depend on the discussion/interest generated on the list. 

We currently hope/expect to have discussion on MIB, PIB, tunnels, and BA
definition and specification process. 

	Kathie

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