Re: [OPSAWG] Negotiation replacing configuration

Brian,

Many protocols already do some type of negotiation but it is based on
capabilities and local/remote configuration rather than operational state
-- at the link layer 802.3x and DCBX come to mind, with routing protocols
operational parameters such as the hello timer come to mind, or even with
TCP things like ECN and SACK are negotiated.  But that is a one-off
negotiation at startup.

The draft seems to want to take this kind of negotiation one step further.
 It looks like an interesting concept.  I worry a bit about the complexity.
 This also seems to be moving in the opposite direction of a centralized
SDN controller making global decisions and implementing them (just an
observation, not a judgement about whether it's a good or bad thing).  It
would help to see a detailed example of how this would actually work for a
sample network/application for folks to get a feel for the complexity.

Anoop

On Tue, Jan 28, 2014 at 4:04 PM, Brian E Carpenter <
brian.e.carpenter@gmail.com> wrote:

> Hi,
>
> I'm a bit surprised at the silence on this. After all, we
> are suggesting a fairly radical change of approach: from
> centrally-driven configuration of devices to peer negotiation
> between devices. In this WG we'd like to get feedback on
> the problem statement based on real experience, since the
> NMRG discussion is more likely to be theoretical.
> Also, is our summary of existing protocols accurate?
>
>     Brian
>
> -------- Original Message --------
> Subject: I-D Action: draft-jiang-config-negotiation-ps-02.txt
> Date: Sat, 18 Jan 2014 11:23:25 -0800
> From: internet-drafts@ietf.org
> Reply-To: internet-drafts@ietf.org
> To: i-d-announce@ietf.org
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
>
>         Title           : Network Configuration Negotiation Problem
> Statement and Requirements
>         Authors         : Sheng Jiang
>                           Yuanbin Yin
>                           Brian Carpenter
>         Filename        : draft-jiang-config-negotiation-ps-02.txt
>         Pages           : 14
>         Date            : 2014-01-18
>
> Abstract:
>    This document describes a problem statement and general requirements
>    for distributed autonomous configuration of multiple aspects of
>    networks, in particular carrier networks.  The basic model is that
>    network elements need to negotiate configuration settings with each
>    other to meet overall goals.  The document describes a generic
>    negotiation behavior model.  The document also reviews whether
>    existing management and configuration protocols may be suitable for
>    autonomic networks.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-jiang-config-negotiation-ps/
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-jiang-config-negotiation-ps-02
>
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-jiang-config-negotiation-ps-02
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
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>
> --
> Regards
>    Brian Carpenter
>    http://orcid.org/0000-0001-7924-6182
>
>
>
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