Re: [MMUSIC] Comments on draft-singh-avtcore-mprtp-04

[Varun Singh <[e-mail]>]

Hi Tiru,

Response inline.

On Wed, Mar 21, 2012 at 20:07, Tirumaleswar Reddy (tireddy)
<[e-mail]> wrote:
> Hi Varun –
>
> I have few comments related to the draft
>
> a)How is the situation handled when new network paths become
> available/disabled after the call is setup ?
>
>     (3G enabled/disabled after the call is setup)
>

This is a local decision and MPRTP will use all available paths.
Either the application or ICE or something else needs to tell MPRTP
when an interface is available or unavailable.

At the media level (in the worst case) the sending endpoint will
discover a path is unavailable when a subflow reports 100% loss and it
will stop using it. Alternatively, if the endpoint discovers that one
of its interface is disabled it can advertise a new set of interfaces
(excluding the disabled interface from the set) to the other endpoint.

> b)There is little information related to IPv6. How SIP Client would pick
> among list of ULA, link-local addresses, IPv6 global addresses with
> different precedence using ICE (refer to
> draft-keranen-mmusic-ice-adress-selection) ?
>

It is also a local decision. This should not be different from the
choices made by an endpoint using a single path. if an endpoint is
using ICE then it just inherits the ICE priorities.


For both these queries, do you have something specific in mind?

Cheers,
Varun


-- 
http://www.netlab.tkk.fi/~varun/