Re: [manet-dlep-rg] London meet up?

Henning Rogge <hrogge@gmail.com> Wed, 05 March 2014 18:19 UTC

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Date: Wed, 5 Mar 2014 18:19:05 +0000
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From: Henning Rogge <hrogge@gmail.com>
To: Rick Taylor <rick@tropicalstormsoftware.com>
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Cc: "DLEP Research Group, \(manet-dlep-rg@ietf.org\)" <manet-dlep-rg@ietf.org>
Subject: Re: [manet-dlep-rg] London meet up?
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I just looked it up, we have no data items in the UDP discovery broadcast
at all at the moment.

Henning
On Mar 5, 2014 5:36 PM, "Rick Taylor" <rick@tropicalstormsoftware.com>;
wrote:

> Hi Guys,
>
> Thank you all very much for a very productive meeting this afternoon.  I
> include a write up of my notes, please correct me if I have missed anything
> pertinent.
>
> Stan has committed to updating the session initiation description to place
> the TCP server in the modem, so the initial part of the protocol is:  Modem
> broadcasts UDP Hello packets containing version, ident and TCP
> address/port.  Router TCP connects, session initiation occurs via the new
> TCP connection.
>
> Credit windowing will stay in the document, but will be clearly marked as
> an optional part of the protocol.  There was some concern raised over the
> clarity of the current text which will need to be address before last call.
>
> Vendor extensions will be defined using a new Data Item, containing a OUI
> (or something from an existing registry) and space for a payload.  There
> will need to be some guidance verbiage to characterise what is a valid
> vendor extension and what is not.
>
> There was clarification of what both ends of a DLEP session must do on
> reciept of an unrecognized signal and data item.  For a data item, the
> receiver MUST ignore the data item, for a signal the recipient MUST send an
> error status signal and terminate the TCP connection.
>
> There will be no facility in DLEP v1 for vendor extended signals.  Any
> extra signals will require an uplift of the verion of the protocol and
> require a new draft.
>
> There will be no such thing as a Peer Characteristic Request.  This will
> prevent abuse and misuse of the DLEP protocol to act as a configuration
> mechanism.
>
> There was further discussion concerning multiple QoS flows with seperate
> metrics across a single link.  This was agreed to be pushed out to another
> draft after DLEP v1, after some analysis that the proposed approach
> (heirachial data items) will not break existing DLEP v1 implementations.
>  Stan agreed to double check that the text specified 16bit length values
> for all TLVs (data and signals).
>
> There was discussion about enumerating error codes, and potential error
> text.  The status signal MUST include an error code, 0 being success,
> others to be enumerated after close analysis of the protocol, plus and
> optional free text field to carry loggable information, capped at 80 bytes,
> utf8 encoded.
>
> There was discussion of confidence values for metrics, and this was
> rejected as a core DLEP mechanism, and the suggestion was to use an
> extension data item TLV instead.
>
> In light of achieveing their goal of listing the outstanding points that
> needed to be reolved before DLEP can make progress to WG last-call, and
> actually achieving suitable consensus to resolve the outstanding issues to
> the satisafaction of one of the authors present, the DT decided to not
> apply for a continuation of their charter, and to instead announce "Mission
> Complete"
>
> Cheers,
>
> Rick Taylor
>
>
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