Re: [Diffserv-interest] CIR in AF class

Scott W Brim <sbrim@cisco.com> Tue, 11 May 2004 11:41 UTC

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Date: Tue, 11 May 2004 07:24:51 -0400
From: Scott W Brim <sbrim@cisco.com>
To: Brian E Carpenter <brc@zurich.ibm.com>
Cc: Feng Y <feng6@uwindsor.ca>, diffserv-interest@ietf.org
Subject: Re: [Diffserv-interest] CIR in AF class
Message-ID: <20040511112450.GN2184@sbrim-w2k01>
References: <web-42722019@uwindsor.ca> <40A08249.8080207@zurich.ibm.com>
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On Tue, May 11, 2004 09:35:37AM +0200, Brian E Carpenter allegedly wrote:
> Yang,
> 
> In the diffserv architecture all packets with the same PHB get
> the same treatment - so there is no way that different flows
> within a class can get different treatments. However, there nothing
> to prevent an implementation from going further than the architecture
> and doing some type of flow-based additional treatment. But that
> would be a proprietary extension.
> 
>     Brian

Also, CIR treatment at the edge can be very different.  

> Feng Y wrote:
> >Hi,
> >
> >I have a question about the services in AF class. According
> >to the RFC, the applications in the same service class
> >should be treat identically. Does that mean, for a ISP,
> >when it negotiates the SLAs with customers, all important
> >parameters such as CIRs, CBSs, EBSs, and so on are the
> >same? Or, within a class, different applications may have
> >different CIRs?

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