Re: [tram] FW: New Version Notification for draft-reddy-tram-stun-path-data-00.txt

> -----Original Message-----
> From: tram [mailto:tram-bounces@ietf.org] On Behalf Of Aijun Wang
> Sent: Wednesday, December 24, 2014 12:07 PM
> To: Tirumaleswar Reddy (tireddy); tram@ietf.org
> Subject: Re: [tram] FW: New Version Notification for draft-reddy-tram-stun-
> path-data-00.txt
> 
> Hi, Reddy:
> 
> I doubt the feasibility of this probe process. For UE that has multiple
> interfaces, the OS of the UE will automatically choose only one default
> interface for communicating. 

No, MPTCP on mobile devices already uses multiple interfaces (for example Apple uses MPTCP for Siri).  MPRTP (draft-ietf-avtcore-mprtp-00) also uses multiple interfaces.

> According to this draft, the ICE agent within the
> UE will try every possible interface to send the STUN packet? 
> This will make
> the connection time between two endpoints unacceptable.

The new attribute can be added to the STUN binding request/response used for ICE connectivity checks and does not introduce any additional messages.

-Tiru

> 
> Best Regards.
> 
> -----Original Message-----
> From: tram [mailto:tram-bounces@ietf.org] On Behalf Of Tirumaleswar
> Reddy
> (tireddy)
> Sent: Tuesday, December 23, 2014 11:29 PM
> To: tram@ietf.org
> Subject: [tram] FW: New Version Notification for draft-reddy-tram-stun-path-
> data-00.txt
> 
> This draft describes a mechanism for an endpoint to discover the path
> characteristics using STUN.
> Comments and suggestions are welcome.
> 
> -Tiru
> 
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> Sent: Tuesday, December 23, 2014 8:37 PM
> To: Varun Singh; Tirumaleswar Reddy (tireddy); Dan Wing (dwing); Varun
> Singh; Tirumaleswar Reddy (tireddy); Pal Martinsen (palmarti); Dan Wing
> (dwing); Pal Martinsen (palmarti)
> Subject: New Version Notification for draft-reddy-tram-stun-path-data-00.txt
> 
> 
> A new version of I-D, draft-reddy-tram-stun-path-data-00.txt
> has been successfully submitted by Tirumaleswar Reddy and posted to the
> IETF
> repository.
> 
> Name:		draft-reddy-tram-stun-path-data
> Revision:	00
> Title:		Discovery of path characteristics using STUN
> Document date:	2014-12-23
> Group:		Individual Submission
> Pages:		9
> URL:
> http://www.ietf.org/internet-drafts/draft-reddy-tram-stun-path-data-00.txt
> Status:
> https://datatracker.ietf.org/doc/draft-reddy-tram-stun-path-data/
> Htmlized:
> http://tools.ietf.org/html/draft-reddy-tram-stun-path-data-00
> 
> 
> Abstract:
>    A host with multiple interfaces needs to choose the best interface
>    for communication.  Oftentimes, this decision is based on a static
>    configuration and does not consider the path characteristics, which
>    may affect the user experience.
> 
>    This document describes a mechanism for an endpoint to discover the
>    path characteristics using Session Traversal Utilities for NAT (STUN)
>    messages.  The measurement information can then be used to influence
>    the endpoint's Interactive Connectivity Establishment (ICE) candidate
>    pair selection algorithm.
> 
> 
> 
> 
> 
> 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.
> 
> The IETF Secretariat
> 
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> 
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