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From: "Marck Gendra" <marck.gendra@upcnet.es>
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Date: Mon, 1 Oct 2001 14:42:33 +0200
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Subject: [Diffserv-interest] How to dimension a Token Bucket?
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Hello,
I'm making the following experiment:
Sending a video session (with Cisco IP/TV video server) marked as EF.
The average speed of video transmission is about 1.5Mbps, but there are =
some traffic bursts.
The TB of the edge router (ingress) should mark conformant packets as EF =
and should drop exceeded packets.
I would like to know how to dimension the TB to get less than 0.1% =
packets lost and then obtain a good video quality for EF traffic.
Does anybody knows if there's any formula (similar to ATM Leaky bucket) =
to dimension correctly both parameters of the Token Bucket to obtain =
less than 0.1% losses?

Thanks you.=20

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hello,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I'm making the following =
experiment:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Sending a video session (with Cisco =
IP/TV video=20
server) marked as EF.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The average speed of video transmission =
is about=20
1.5Mbps, but there are some traffic bursts.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The TB of the edge router (ingress) =
should mark=20
conformant packets&nbsp;as EF&nbsp;and should drop exceeded=20
packets.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I would like to know how to dimension =
the=20
TB&nbsp;to get less than 0.1%&nbsp;packets lost and then obtain a good =
video=20
quality for EF traffic.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Does anybody knows if there's any =
formula (similar=20
to ATM Leaky bucket) to dimension correctly both parameters of the Token =
Bucket=20
to obtain less than 0.1% losses?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks =
you.</FONT>&nbsp;</DIV></BODY></HTML>

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From diffserv-interest-admin@ietf.org  Fri Oct  5 10:10:40 2001
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From: "Johann Max" <johann@lrc.feelt.ufu.br>
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Date: Fri, 5 Oct 2001 10:18:17 -0300
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Subject: [Diffserv-interest] AF PHB
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Hi,

How to configure buffers size for the class AF1, AF2, AF3 and AF3. And
weight in WRR scheduler for each class?

Thanks

-------------------------------------------------------
Johann Max Hofmann Magalhães
Mestrado - Laboratório de Redes de Computadores - UFU
emails: johann@lrc.feelt.ufu.br
            jmhm@zipmail.com.br
hp: http://www.jmhm.hpg.com.br


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From diffserv-interest-admin@ietf.org  Fri Oct  5 16:00:05 2001
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From: "Jeff Norman" <jnorman@nortelnetworks.com>
Reply-To: "Jeff Norman" <jnorman@nortelnetworks.com>
Subject: re:[Diffserv-interest] AF PHB
To: Johann Max <johann@lrc.feelt.ufu.br>
cc: diffserv-interest <diffserv-interest@ietf.org>
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Johann,
  I don't think anyone understands your question, as your
question sounds like you are asking how to do it on a
certain product.

--Jeff

In message "[Diffserv-interest] AF PHB", 
"Johann Max" <johann@lrc.feelt.ufu.br> writes:

>Hi,
>
>How to configure buffers size for the class AF1, AF2, AF3 and AF3. And
>weight in WRR scheduler for each class?
>
>Thanks
>
>-------------------------------------------------------
>Johann Max Hofmann Magalhães
>Mestrado - Laboratório de Redes de Computadores - UFU
>emails: johann@lrc.feelt.ufu.br
>            jmhm@zipmail.com.br
>hp: http://www.jmhm.hpg.com.br
>
>
>_______________________________________________
>Diffserv-interest mailing list
>Diffserv-interest@ietf.org
>http://www1.ietf.org/mailman/listinfo/diffserv-interest
>



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From diffserv-interest-admin@ietf.org  Mon Oct  8 07:23:48 2001
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From: "Johann Max" <johann@lrc.feelt.ufu.br>
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References: <200110051958.f95Jw5S21783@zcars0m9.nortelnetworks.com>
Subject: Re: re:[Diffserv-interest] AF PHB
Date: Mon, 8 Oct 2001 08:05:22 -0300
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Jeff,
This isn't a product. I only need to do a simulation of PHB AF with classes
AF1, AF2, AF3 and AF4. Therefore, I would like to know the amount of buffer
space and bandwidth assigned each class. I need a reference, paper, draft or
RFC about this.

Best regards,
Johann Max

-----Mensagem Original-----
De: "Jeff Norman" <jnorman@nortelnetworks.com>
Para: "Johann Max" <johann@lrc.feelt.ufu.br>
Cc: "diffserv-interest" <diffserv-interest@ietf.org>
Enviada em: Sexta-feira, 5 de Outubro de 2001 16:58
Assunto: re:[Diffserv-interest] AF PHB


Johann,
  I don't think anyone understands your question, as your
question sounds like you are asking how to do it on a
certain product.

--Jeff

In message "[Diffserv-interest] AF PHB",
"Johann Max" <johann@lrc.feelt.ufu.br> writes:

>Hi,
>
>How to configure buffers size for the class AF1, AF2, AF3 and AF3. And
>weight in WRR scheduler for each class?
>
>Thanks
>
>-------------------------------------------------------
>Johann Max Hofmann Magalhães
>Mestrado - Laboratório de Redes de Computadores - UFU
>emails: johann@lrc.feelt.ufu.br
>            jmhm@zipmail.com.br
>hp: http://www.jmhm.hpg.com.br
>
>
>_______________________________________________
>Diffserv-interest mailing list
>Diffserv-interest@ietf.org
>http://www1.ietf.org/mailman/listinfo/diffserv-interest
>




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From diffserv-interest-admin@ietf.org  Tue Oct 16 11:34:13 2001
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From: "Marck Gendra" <marck.gendra@upcnet.es>
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Subject: [Diffserv-interest] diffserv and IPv6
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Hi,

I'm interest in the interoperability of Diffserv and IPv6.
Is there any document related on diffserv and IPv6 compatibility?

Thanks.

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<DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I'm interest in the interoperability of =
Diffserv=20
and IPv6.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Is there any document related on =
diffserv and IPv6=20
compatibility?</FONT></DIV>
<DIV>&nbsp;</DIV>
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From diffserv-interest-admin@ietf.org  Tue Oct 16 13:30:42 2001
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To: "Marck Gendra" <marck.gendra@upcnet.es>
Cc: <diffserv@ietf.org>, <diffserv-interest@ietf.org>
Subject: Re: [Diffserv-interest] diffserv and IPv6
References: <000801c15657$b35944c0$4220a8c0@hp>
X-URL: <http://www.ifi.uio.no/~tomkri/>
From: Tom Kristensen <tomkri@ifi.uio.no>
Date: 16 Oct 2001 19:21:37 +0200
In-Reply-To: "Marck Gendra"'s message of "Tue, 16 Oct 2001 17:32:00 +0200"
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>>>>> "Marck" == Marck Gendra <marck.gendra@upcnet.es> writes:

    Marck> I'm interest in the interoperability of Diffserv and IPv6.
    Marck> Is there any document related on diffserv and IPv6
    Marck> compatibility?

What about starting with:

IETF Differentiated Services Working Group (charter/home page)
   http://www.ietf.org/html.charters/diffserv-charter.html

RFC2474 - "Definition of the Differentiated Services Field 
           (DS Field) in the IPv4 and IPv6 Headers"
   http://www.ietf.org/rfc/rfc2474.txt

RFC2475 - "An Architecture for Differentiated Services" 
   http://www.ietf.org/rfc/rfc2475.txt


As you may see, the words "interoperability" and 
"compatibility" in your question does not make sense as
DiffServ is supposed to be used in both IPv4 and v6 networks...

-- Tom

-- 
# Tom Kristensen                      (Research Associate) #
## Department of Informatics, University of Oslo          ##
### tel  +47 2285 2532  #  http://www.ifi.uio.no/~tomkri ###

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From diffserv-interest-admin@ietf.org  Wed Oct 17 08:35:00 2001
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Date: Wed, 17 Oct 2001 14:38:28 +0200
From: Brian E Carpenter <brian@hursley.ibm.com>
Organization: IBM
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To: Tom Kristensen <tomkri@ifi.uio.no>
Cc: Marck Gendra <marck.gendra@upcnet.es>, diffserv-interest@ietf.org
Subject: Re: [Diffserv-interest] diffserv and IPv6
References: <000801c15657$b35944c0$4220a8c0@hp> <7rk7xvts9q.fsf@odin.unik.no>
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To put it another way, diffserv is defined identically for
IPv4 and IPv6. It should also be able to cross over
an IPv4/IPv6 translator transparently. There is no document
on this topic because there is nothing to say!

  Brian

N.B. diffserv list deleted. Please don't cross-post unnecessarily-
it just fills up >2000 inboxes.

Tom Kristensen wrote:
> 
> >>>>> "Marck" == Marck Gendra <marck.gendra@upcnet.es> writes:
> 
>     Marck> I'm interest in the interoperability of Diffserv and IPv6.
>     Marck> Is there any document related on diffserv and IPv6
>     Marck> compatibility?
> 
> What about starting with:
> 
> IETF Differentiated Services Working Group (charter/home page)
>    http://www.ietf.org/html.charters/diffserv-charter.html
> 
> RFC2474 - "Definition of the Differentiated Services Field
>            (DS Field) in the IPv4 and IPv6 Headers"
>    http://www.ietf.org/rfc/rfc2474.txt
> 
> RFC2475 - "An Architecture for Differentiated Services"
>    http://www.ietf.org/rfc/rfc2475.txt
> 
> As you may see, the words "interoperability" and
> "compatibility" in your question does not make sense as
> DiffServ is supposed to be used in both IPv4 and v6 networks...
> 
> -- Tom
> 
> --
> # Tom Kristensen                      (Research Associate) #
> ## Department of Informatics, University of Oslo          ##
> ### tel  +47 2285 2532  #  http://www.ifi.uio.no/~tomkri ###
> 
> _______________________________________________
> Diffserv-interest mailing list
> Diffserv-interest@ietf.org
> http://www1.ietf.org/mailman/listinfo/diffserv-interest

-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Brian E Carpenter 
Distinguished Engineer, Internet Standards & Technology, IBM 
On assignment at the IBM Zurich Laboratory, Switzerland
Board Chairman, Internet Society http://www.isoc.org

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From diffserv-interest-admin@ietf.org  Sun Oct 21 19:57:07 2001
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Subject: [Diffserv-interest] Re: [Diffserv] diffserv and IPv6
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At 11:32 PM 10/16/2001, Marck Gendra wrote:
>Is there any document related on diffserv and IPv6 compatibility?

yes; the architecture. The same technology is used in IPv4 and IPv6


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