RE: RE : Please do respond to this message.

[Dor Snapir - Israel <DorS@gilat.com>]

My mistake
Dor

In the ETSI EN 301 192 reference, the use of CRC or checksum seems
mandatory..

Have you another reference stating that it is optional ?

Thanks

The overhead associated with IP over MPEG-2 is 4Byte mpeg-2 header +
17Bytes
MPE (Multi Protocol Encapsulation) if utilizing the CRC or checksum
option
and 13Bytes if not
The 17 bytes are added only if this mpeg frame contain the IP header
See ETSI EN 301 192 (DVB specification for data broadcasting)
Section Packing will only eliminate the 4Bytes mpeg2 header but it is
recommended if the link utilization is more important then the link
speed
(e.g. Geo Stationary Satellite networks)
Hope I helped

-----Original Message-----
From: Dr G Fairhurst [mailto:gorry@erg.abdn.ac.uk]
Sent: Friday, August 23, 2002 10:42 AM
To: ip-dvb@erg.abdn.ac.uk
Subject: Please do respond to this message.



The following message was sent to the ietf@ietf.org mailing list.
It would be good to respond to this message thread, to stimulate more 
discussion in this area.

Message included.

Gorry


------ Forwarded Message
From: "Narayan, Krishnan" <knarayan@idirect.net>
Date: Wed, 21 Aug 2002 15:51:36 -0400
To: <IETF@ietf.org>
Subject: IP over MPEG-2 Transport

Hi All: Can someone let me know the Overhead associated with IP over
MPEG-2 and how does Section packing reduce that overhead?


Thanks in advance
krishan



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