The MPLS WG Archive

[Brian E Carpenter <brian@hursley.ibm.com>]

Bora,

I don't think we will see reports of Diffserv deployment experience until
production releases from major router vendors support Diffserv.

The edge boxes that I'm thinking of will need to do MF classification and shaping
at LAN speeds (whatever that means in a particular year). Other boxes only need
to do BA classification and policing. 

But this is old ground that we settled in the early days of diffserv. And
I don't see what it has to do with MPLS.

  Brian

Bora Akyol wrote:
> 
> The comment about the backbone and ingress boxes is something that always
> comes up. However, with the age of private peering, VPNS and customers of
> ISPs getting hooked at OC48 speeds to the larger ISPs, there is no longer a
> core box or an edge box. Most core boxes have almost edge box capabilities.
> And at high speeds, it helps to have standard, and not very flexible
> mechanisms.
> 
> Regarding the ISPs, is there a document somewhere that describes the current
> experiences of any ISP that has deployed DS. I don't think that document
> exists. I believe that the most widespread use of DS-like behavior is in
> MPLS with the CoS (EXP) bits which are essentially used as priorities.
> 
> Thanks
> 
> Bora
> 
> > -----Original Message-----
> > From: Brian E Carpenter [mailto:brian@hursley.ibm.com]
> > Sent: Thursday, June 01, 2000 1:34 PM
> > To: Bora Akyol
> > Cc: diffserv@ietf.org
> > Subject: Re: "This is a gripe" [was Re: [Diffserv] MPLS Diffserv
> > Extensions related questions/comments
> >
> 
> << SNIPPED>>
> 
> > I have to say that my assumption has always been that the
> > hard problems
> > would be solved by ingress boxes where scale is not such an
> > issue, so that
> > very simple mechanisms would be sufficient in the backbone boxes.
> >
> >   Brian
> >
> >
> 
> <<SNIPPED>>

-- 
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Brian E Carpenter 
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