RE: [Ieprep] Re: WG Review: Recharter of Internet EmergencyPreparedness (ieprep)

"Dolly, Martin C, ALABS" <mdolly@att.com> Thu, 16 November 2006 13:30 UTC

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Subject: RE: [Ieprep] Re: WG Review: Recharter of Internet EmergencyPreparedness (ieprep)
Date: Thu, 16 Nov 2006 07:29:59 -0600
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Thread-Topic: [Ieprep] Re: WG Review: Recharter of Internet EmergencyPreparedness (ieprep)
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From: "Dolly, Martin C, ALABS" <mdolly@att.com>
To: "Janet P Gunn" <jgunn6@csc.com>, "Brian E Carpenter" <brc@zurich.ibm.com>
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Cc: "Robert G. Cole" <robert.cole@jhuapl.edu>, Pekka Savola <pekkas@netcore.fi>, ieprep@ietf.org, Scott Bradner <sob@harvard.edu>, Fred Baker <fred@cisco.com>, Sam Hartman <hartmans-ietf@mit.edu>, ietf@ietf.org
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Janet,

I agree that the items you listed below are best analyzed/discussed in
the IETF, for as long as real-life architecture deployment scenarios are
taken into account.

Martin
 
Janet Gunn wrote on 11/16:
Some of the possibilities in that continuum include (in no particular
order):
- Allowing extra sessions in, and permitting degradation in QoS across
all
sessions.
- Allowing a higher packet drop rate across all the "lower priority"
calls.
- Negotiating a lower bandwidth allocation, possibly accompanied by a
changing to a lower rate bandwidth codec when a higher priority session
needs to "preempt".
- Negotiating (or arbitrarily imposing) a different PHB (e.g. AF or BE
rather than EF) for lower priority sessions when a higher priority
session
needs to "preempt".
- Different Capacity Admission Control mechanisms for different priority
sessions.

The analysis/understanding of these (and other) alternatives is much
better
done in the IETF than in the historically-circuit-swiched SDOs.

Janet
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