draft-ietf-mmusic-sdp-ipv6-02.txt   draft-ietf-mmusic-sdp-ipv6-03.txt 
Internet Engineering Task Force Sean Olson Internet Engineering Task Force Sean Olson
Internet draft Gonzalo Camarillo Internet draft Gonzalo Camarillo
<draft-ietf-mmusic-sdp-ipv6-02.txt> Ericsson <draft-ietf-mmusic-sdp-ipv6-03.txt> Ericsson
February 2002 February 2002
Expires: August 2002 Adam Roach Expires: August 2002 Adam Roach
dynamicsoft dynamicsoft
Support for IPv6 in SDP Support for IPv6 in SDP
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. all provisions of Section 10 of RFC2026.
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as reference material or to cite them other than as "work in as reference material or to cite them other than as "work in
progress." progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
Abstract Abstract
This document describes the use of IPv6 addresses [1] in conjunction This document describes the use of IPv6 addresses in conjunction
with the Session Description Protocol (SDP) [2]. Specifically, this with the Session Description Protocol (SDP). Specifically, this
document clarifies existing text in SDP with regards to the syntax document clarifies existing text in SDP with regards to the syntax
of IPv6 addresses. of IPv6 addresses.
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Support for IPv6 in SDP Support for IPv6 in SDP
1. Introduction 1. Introduction
SDP is intended for describing multimedia sessions for the purposes SDP is intended for describing multimedia sessions for the purposes
of session announcement, session invitation, and other forms of of session announcement, session invitation, and other forms of
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multicast-address = IP4-multicast | IP6-multicast multicast-address = IP4-multicast | IP6-multicast
IP4-multicast = m1 3*( "." decimal-uchar ) IP4-multicast = m1 3*( "." decimal-uchar )
"/" ttl [ "/" integer ] "/" ttl [ "/" integer ]
; IPv4 multicast addresses may be in the ; IPv4 multicast addresses may be in the
; range 224.0.0.0 to 239.255.255.255 ; range 224.0.0.0 to 239.255.255.255
m1 = ("22" ("4"|"5"|"6"|"7"|"8"|"9")) | m1 = ("22" ("4"|"5"|"6"|"7"|"8"|"9")) |
("23" DIGIT )) ("23" DIGIT ))
IP6-multicast = hexpart "/" ttl [ "/" integer ] IP6-multicast = hexpart
; IPv6 address starting with FF ; IPv6 address starting with FF
addr = FQDN | unicast-address addr = FQDN | unicast-address
FQDN = 4*(alpha-numeric|"-"|".") FQDN = 4*(alpha-numeric|"-"|".")
; fully qualified domain name as specified ; fully qualified domain name as specified
; in RFC1035 ; in RFC1035
unicast-address = IP4-address | IP6-address unicast-address = IP4-address | IP6-address
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Support for IPv6 in SDP Support for IPv6 in SDP
IP4-address = b1 "." decimal-uchar "." decimal-uchar IP4-address = b1 3*("." decimal-uchar) | "0.0.0.0"
"." b4 | "0.0.0.0"
b1 = decimal-uchar b1 = decimal-uchar
; less than "224"; not "0" or "127" ; less than "224"; not "0" or "127"
b4 = decimal-uchar
; not "0"
; The following is from RFC2373 Appendix B. It is a direct copy. ; The following is from RFC2373 Appendix B. It is a direct copy.
IP6-address = hexpart [ ":" IP4-address ] IP6-address = hexpart [ ":" IP4-address ]
hexpart = hexseq | hexseq "::" [ hexseq ] | hexpart = hexseq | hexseq "::" [ hexseq ] |
"::" [ hexseq ] "::" [ hexseq ]
hexseq = hex4 *( ":" hex4) hexseq = hex4 *( ":" hex4)
hex4 = 1*4HEXDIG hex4 = 1*4HEXDIG
4. Example SDP description with IPv6 addresses 4. Example SDP description with IPv6 addresses
The following is an example SDP description using the above ABNF for The following is an example SDP description using the above ABNF for
IPv6 addresses. In particular, the origin, URI, and connection IPv6 addresses. In particular, the origin, URI, and connection
fields contain IPv6 addresses. fields contain IPv6 addresses.
v=0 v=0
o=nasa1 971731711378798081 0 IN IP6 2201:056D::112E:144A:1E24 o=nasa1 971731711378798081 0 IN IP6 2201:056D::112E:144A:1E24
s=(Almost) live video feed from Mars-II sattelite s=(Almost) live video feed from Mars-II satellite
u=http://[1080::8:800:200C:417A]/marsII
p=+1 713 555 1234 p=+1 713 555 1234
c=IN IP6 FF00:03AD::7F2E:172A:1E24/127 c=IN IP6 FF1E:03AD::7F2E:172A:1E24
t=3338481189 3370017201 t=3338481189 3370017201
m=audio 6000 RTP/AVP 2 m=audio 6000 RTP/AVP 2
a=rtpmap:2 G726-32/8000 a=rtpmap:2 G726-32/8000
m=video 6024 RTP/AVP 107 m=video 6024 RTP/AVP 107
a=rtpmap:107 H263-1998/90000 a=rtpmap:107 H263-1998/90000
5. Note for implementors 5. Note for implementors
An implementation might receive an SDP session description with an An implementation may receive an SDP session description with an
IPv6 address that contains an IPv4-mapped address. Such an address IPv6 address whose format [1] is internally that of an IPv4 mapped
MUST be treated the same as an IPv4 address. address. Note that such an address is actually the address of an
IPv4-only node, and implementors are warned to interpret IPv4 mapped
addresses as equivalent to IP4.
6. IANA Considerations 6. IANA Considerations
This document updates the definition of the IP6 addrtype parameter This document updates the definition of the IP6 addrtype parameter
found in RFC2327. found in RFC2327.
7. Security Considerations 7. Security Considerations
No additional considerations above what is stated in section 7 of No additional considerations above what is stated in section 7 of
RFC2327.
Olson/Camarillo/Roach 3 Olson/Camarillo/Roach 3
Support for IPv6 in SDP Support for IPv6 in SDP
RFC2327.
8. References 8. References
[1] R. Hinden and S. Deering, "IP Version 6 Addressing [1] R. Hinden and S. Deering, "IP Version 6 Addressing
Architecture", RFC2373, IETF. Architecture", RFC2373, IETF.
[2] M. Handley and V. Jacobson, "Session Description Protocol", [2] M. Handley and V. Jacobson, "Session Description Protocol",
RFC2327, IETF. RFC2327, IETF.
[3] R. Hinden, et. al., "Format for Literal IPv6 Addresses in [3] R. Hinden, et. al., "Format for Literal IPv6 Addresses in
URL's", RFC2732, IETF. URL's", RFC2732, IETF.
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E-Mail: <adam@dynamicsoft.com> E-Mail: <adam@dynamicsoft.com>
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Full Copyright Statement Full Copyright Statement
Copyright (c) The Internet Society (2001). All Rights Reserved. Copyright (c) The Internet Society (2002). All Rights Reserved.
Olson/Camarillo/Roach 4
Support for IPv6 in SDP
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
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Support for IPv6 in SDP
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph kind, provided that the above copyright notice and this paragraph
are included on all such copies and derivative works. However, this are included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than followed, or as required to translate it into languages other than
English. English.
 End of changes. 

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