draft-ietf-mmusic-fec-grouping-03.txt   draft-ietf-mmusic-fec-grouping-04.txt 
MMUSIC Working Group Adam Li MMUSIC Working Group Adam Li
INTERNET-DRAFT HyerVision INTERNET-DRAFT HyerVision
Expires: September 5, 2006 March 5, 2006 Expires: October 4, 2006 April 4, 2006
Forward Error Correction Grouping Semantics Forward Error Correction Grouping Semantics
in Session Description Protocol in Session Description Protocol
<draft-ietf-mmusic-fec-grouping-03.txt> <draft-ietf-mmusic-fec-grouping-04.txt>
Status of this memo Status of this memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that other Task Force (IETF), its areas, and its working groups. Note that other
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v=0 v=0
o=adam 289083124 289083124 IN IP4 host.example.com o=adam 289083124 289083124 IN IP4 host.example.com
s=ULP FEC Seminar s=ULP FEC Seminar
t=0 0 t=0 0
c=IN IP4 224.2.17.12/127 c=IN IP4 224.2.17.12/127
a=group:FEC 1 2 a=group:FEC 1 2
a=group:FEC 3 4 a=group:FEC 3 4
m=audio 30000 RTP/AVP 0 m=audio 30000 RTP/AVP 0
a=mid:1 a=mid:1
m=application 30002 RTP/AVP 100 m=audio 30002 RTP/AVP 100
a=rtpmap:100 ulpfec/8000 a=rtpmap:100 ulpfec/8000
a=mid:2 a=mid:2
m=video 30004 RTP/AVP 31 m=video 30004 RTP/AVP 31
a=mid:3 a=mid:3
m=application 30004 RTP/AVP 101 m=video 30004 RTP/AVP 101
c=IN IP4 224.2.17.13/127 c=IN IP4 224.2.17.13/127
a=rtpmap:101 ulpfec/8000 a=rtpmap:101 ulpfec/8000
a=mid:4 a=mid:4
5. Security Consideration 5. Security Consideration
There is a weak threat for the receiver that the FEC grouping can be There is a weak threat for the receiver that the FEC grouping can be
modified to indicate FEC relationships that do not exist. Such modified to indicate FEC relationships that do not exist. Such
attacks may result in failure of FEC protect, and/or mishandling of attacks may result in failure of FEC protect, and/or mishandling of
other media payload streams. It is recommended that the receiver other media payload streams. It is recommended that the receiver
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modifications upon the publication of this specification: modifications upon the publication of this specification:
- Replace all occurrences of RFC XXXX with the RFC number this - Replace all occurrences of RFC XXXX with the RFC number this
specification receives when being published. specification receives when being published.
- Replace reference [5] and all occurrences of RFC YYYY with the - Replace reference [5] and all occurrences of RFC YYYY with the
corresponding title and RFC number of that ID when it is published. corresponding title and RFC number of that ID when it is published.
- Remove this Section. - Remove this Section.
This Internet-Draft expires September 5, 2006. This Internet-Draft expires October 4, 2006.
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