FW: [ipcdn] FW: WG Review: IP over DVB (ipdvb)

["Wijnen, Bert (Bert)" <bwijnen@lucent.com>]

Feedback from IPCDN WG member

Thanks,
Bert 

-----Original Message-----
From: Greg White [mailto:g.white@CableLabs.com]
Sent: dinsdag 28 oktober 2003 0:36
To: Wijnen, Bert (Bert)
Cc: Jean-Francois Mule; Richard_Woundy@cable.comcast.com
Subject: RE: [ipcdn] FW: WG Review: IP over DVB (ipdvb)


Bert,

I'm not sure if you've gotten any comments from others in IPCDN, but I
am a bit confused on the scope of the proposed WG.  The name indicates
"IP over DVB", yet the discussion below, and on the IP-DVB webpage
indicate that perhaps it really is IP over MPEG-2.

As you know, IPCDN is chartered with developing MIBs for IP over Cable
Data Networks.  The standardized Cable Data Networks that are the
subject of all of IPCDN's current work use MPEG-2 transport and in
particular Cable Data Networks in Europe use MPEG-2/DVB.  These systems
are widely deployed for the encapsulation of IP over MPEG-2.

I've glanced through draft-fair-ipdvb-req-02.txt, and don't see any
mention of the work that IPCDN and other standards bodies (SCTE, ETSI,
ITU-T) have done in this regard.  What isn't clear to me is the
relationship between the existing work, and what is being proposed by
this working group.

Sorry for the late comments.

Regards,
Greg White
CableLabs


-----Original Message-----
From: Wijnen, Bert (Bert) [mailto:bwijnen@lucent.com] 
Sent: Monday, October 20, 2003 7:30 PM
To: Ipcdn (E-mail)
Subject: [ipcdn] FW: WG Review: IP over DVB (ipdvb)


IPCDN folk, please check if this has overlap or conflicts
with your WG. 

Thanks,
Bert 

-----Original Message-----
From: The IESG [mailto:iesg-secretary@ietf.org]
Sent: maandag 20 oktober 2003 22:02
Cc: new-work@ietf.org; ip-dvb@erg.abdn.ac.uka.cnri.reston.va.us
Subject: WG Review: IP over DVB (ipdvb)


A new IETF working group has been proposed in the Internet Area.  
The IESG has not made any determination as yet.  The following
description 
was submitted, and is provided for informational purposes only.  Please
send 
your comments to the IESG mailing list (iesg@ietf.org) by October 27th.

IP over DVB (ipdvb)
-------------------

 Current Status: Proposed Working Group

 Description of Working Group:

 The MPEG-2 Transport Stream provides a transmission network that has
become
 widely use to support digital TV broadcast, including: DVB, ATSC,
ISDB-T.
 These, and related standards, define a set of commercially available
 components that are increasingly being used to provide a
general-purpose
 packet transmission network. MPEG-2 Transport networks are being used
to
 build IP networks to supplement broadcast TV/audio services and also
provide
 one-way and two-way IP-only subnetworks.

 There is a need to define an efficient standardised encapsulation for
IPv4
 and IPv6 datagrams, and to recommend procedures for supporting
protocols.
 Examples include dynamic address resolution, multicast group membership
 reporting and possibly management information tables and MIBs.
Documents
 will be defined that describe protocols required to build a complete
 IPv4/IPv6 unicast/multicast services, and the mappings required to
perform
 dynamic address resolution. The primary purpose of this working group
is to
 develop a set of Internet Drafts and where appropriate to progress
these as
 either Internet Informational RFCs or Standards track RFCs.

 The current list of work items is:

 1. Issue an Internet Draft specifying Requirements and Framework for
 supporting IP services via MPEG-2 transmission networks. Such
requirements
 should consider the range of platforms currently (or anticipated to be)
in
 use. This draft will be submitted to the IESG for possible publication
as
 an Informational RFC.

 2. The working group will investigate and design an efficient
encapsulation
 method for IPv4/IPv6, and advance this via the IESG to a
standards-track
 RFC. The design needs to consider the need for MAC addresses, the
potential
 need for synchronisation between streams, support for IPv6 and
multicast
 services, and support for multiple gateways (feeds).

 3. The working group will consider the options for unicast and
multicast
 address resolution. A working group Internet Draft will define a
framework
 and recommend appropriate address resolution mechanisms for IPv4 and
IPv6
 using both the existing Multi-Protocol Encapsulation and any new
 encapsulation developed by the working group. Consideration will be
paid to
 existing standards, and the cases for IPv6 and IPv4 will be described.
This
 document will be submitted to the IESG for publication as an
Informational
 RFC.

 4. A working group Internet Draft will be written to recommend a set of
 dynamic address resolution procedures for IPv6. It will describe the
 protocol and syntax of the information exchanged. This work may be
based on
 an extension to the Neighbor Discovery (ND) protocol to support MPEG-2
 transmission, and include specific optimisations for broadcast
networks.
 This document will be submitted to the IESG for publication as a
 standards-track RFC.

 5. If there is a need for further supporting protocols, it will
consider a
 possible recharter under the guidance of the IESG. Examples in this
area
 include, the negotiation/association of IP QoS with MPEG-2 transport
 streams, address resolution for IPv4, and the need for SNMP MIBs.



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