Subject: Re: [Diffserv] Linux Diffserv

From: Brian E Carpenter <[email-masked]>
Date: Wed, 01 Aug 2001 17:13:21 -0500

This list is for diffserv standardisation.

For general discussion try the diffserv-interest list.
Join that list via
http://www.ietf.org/mailman/listinfo/diffserv-interest

However I will point out that diffserv is 100% an IP layer standard, and that we
certainly expect traffic conditioning at every ingress. Traffic conditioning at the
egress is not required, unless the downstream SLA makes it essential.

   Brian

GOPAL NAYAK wrote:
> 
> Hello All,
>   In which layer most of these diffserver work ? Though ideally they should
> work in IP layer ( Network layer) but I wonder whether most diffserver
> implementation support it in Data Link Layer ? Where is it implemented in
> Linux ?
> 
>  Second, do we have a situation where route has two ingress and two egress
> o/p and each of them having different SLA ?
> 
>                                       SLA1  -------------------------------
> SLA3
> >From domain 1                   ---------| dm1     FIB module     dm3
> |--------------------> To domain 3
> >From domain 2                   ---------| dm2               |
> dm4   |---------------------> To domain 4
> 
>                                       SLA3   -------------------------------
> SLA4
> 
> In this case do we need to have diffserver module (classifier, scheduler
> ect) at each interface ?
> 
> Regards,
> Gopal
> 
>   --------------------------------------------------------------------------------------------------------------------------------
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-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Brian E Carpenter 
Distinguished Engineer, Internet Standards & Technology, IBM 
On assignment for IBM at http://www.iCAIR.org 
Board Chairman, Internet Society http://www.isoc.org

"We shall need a number of efficient librarian types 
 to keep us in order." - Alan Turing, 1947.

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