Subject: RE: [Diffserv] Per Hop Behavior Identification Codes (RFC2836)

From: Radhakrishna <[email-masked]>
Date: Tue, 18 Jul 2000 13:15:01 +0530

Thanks Brian.

Do you know any work going on in other working groups to identify and
standardize the QoS parameters (independent of underlying technologies -
"link layers") that could be used with PHBID codes ?
(similar to IntServ objects/parameters associated with Guaranteed and
Control Load services)

Regards,
....RK

> -----Original Message-----
> From:	Brian E Carpenter [SMTP:[email-masked]]
> Sent:	Tuesday, July 18, 2000 12:43 PM
> To:	Radhakrishna
> Cc:	[email-masked]
> Subject:	Re: [Diffserv] Per Hop Behavior Identification Codes
> (RFC2836)
> 
> Yes, these codes are global in scope (whereas DSCP values are local).
> 
> QOS parameters for signalling are quite independent of the PHBID codes.
> It's a quite separate question, outside the mandate of the diffserv
> WG.
> 
>   Brian
> 
> Radhakrishna wrote:
> > 
> > Do these codes work across DiffServ domains ?
> > i.e. whether we can use these codes to get consistent PHBs
> > across domains, while the DSCPs used in these domains could be
> > different ? Can they be used by end hosts to signal the desired
> > PHBs to the network ?
> > 
> > Also what about the parameters, if these codes are used for
> > negotiating the bandwidth ? Although, these codes uniquely
> > identify the PHBs, I think there should be some parameters to
> > characterize these PHBs so that we can appropriately map or
> > bring up VC with required parameters.
> > 
> > I am using these codes to signal the desired PHBs through RSVP as
> explained
> > http://www.ietf.org/internet-drafts/draft-rk-diffserv-rsvp-sig-00.txt.
> > This draft proposes siganling and admission control for DiffServ
> networks
> > using RSVP, where in end hosts or the access nodes can request the
> > desired PHBs (through PHB Id codes) along with PHB parameters for
> > their traffic. Like to know whether it is appropriate to use these codes
> for
> > that purpose.
> > 
> > Thanks,
> > .....RK
> > 
> > **************************************************
> > Radhakrishna C
> > Staff Engineer,
> > Motorola India Electronics Ltd.,
> > The Senate, 33A, Ulsoor Road,
> > Bangalore-560042, INDIA.
> > Phone: +91-80-5598615,  Fax: +91-80-5598660
> > Email: [email-masked]
> > **************************************************
> > 
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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: [email-masked]

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