Network Working Group E. Tacsik Internet-Draft Nokia Expires: May 19, 2004 November 19, 2003 IPv6CP option for IPv6 SIP Proxy address draft-tacsik-pppext-ipcp-opt-ipv6-sip-proxy-00.txt Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http:// www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on May 19, 2004. Copyright Notice Copyright (C) The Internet Society (2003). All Rights Reserved. Abstract This document defines a new PPP IPCP CONFIGURATION OPTION TYPE for returning the addresses of IPv6 SIP proxy server(s). This option provides one mechanism that a system may use to locate IPv6 SIP proxy server(s). This approach is applicable for a system that is using IPv4 over PPP for the link layer protocol and IPv4 address allocation. Tacsik Expires May 19, 2004 [Page 1] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Configuration Options . . . . . . . . . . . . . . . . . . . . 4 2.1 Primary IPv6 SIP Server Address Option . . . . . . . . . . . . 4 2.2 Secondary IPv6 SIP Server Address Option . . . . . . . . . . . 5 3. Security Considerations . . . . . . . . . . . . . . . . . . . 7 Author's Address . . . . . . . . . . . . . . . . . . . . . . . 8 References . . . . . . . . . . . . . . . . . . . . . . . . . . 8 A. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9 Intellectual Property and Copyright Statements . . . . . . . . 10 Tacsik Expires May 19, 2004 [Page 2] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 1. Introduction The SIP (Session Initiation Protocol)[2] is a signaling protocol used for session invitation, modification, and termination. The UAC (User Agent Client) sends a request to the UAS (User Agent Server). However, the request message (INVITE) is not directly sent to the callee UAS, it rather goes through proxy servers and possibly redirect servers. This draft specifyies one mechanism that a system may use to locate IPv6 SIP proxy server(s). This draft specifies a PPP IPCP CONFIGURATION OPTION TYPE that allows IPv6 SIP clients to locate a list of IPv6 SIP proxy servers that are to be used for all IPv6 SIP requests. This approach is applicable to a system utilizing PPP for its link layer protocol and IPv4 address allocation (e.g. 3GPP2 Packet Data Networks). Tacsik Expires May 19, 2004 [Page 3] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 2. Configuration Options The PPP IPCP Configuration Option format and the basic options are defined in RFC 1661 [1]. This document defines the two new options: Primary IPv6 SIP Server Address and Secondary IPv6 SIP Server Address. 2.1 Primary IPv6 SIP Server Address Option Description This PPP IPCP Configuration Option is used for negotiating with the remote peer the address of the Primary IPv6 SIP Server Address to be used on the local end of the link. A summary of the Primary IPv6 SIP Server Address Configuration Option format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | TYPE | Length | Prim-IPv6-SIP-Server Addr | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Prim-IPv6-SIP-Server Addr(cont)| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ type ? [To be assigned by IANA] Primary IPv6 SIP Server Address Option Length 18 Prim-IPv6-SIP-Server-Addr The 128-bit Primary IPv6 SIP Server Address is the IPv6 address of the primary proxy SIP server to be used by the local peer. Setting these 128-bits to zero requests that the peer provide the address information in a Config-Nak packet. Tacsik Expires May 19, 2004 [Page 4] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 Default By default, no primary server address is provided. 2.2 Secondary IPv6 SIP Server Address Option Description This PPP IPCP Configuration Option is used for negotiating with the remote peer the address of the secondary SIP Server Address to be used on the local end of the link. A summary of the Secondary IPv6 SIP Server Address Configuration Option format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | TYPE | Length | Sec-IPv6-SIP-Server Addr | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Sec-IPv6-SIP-Server Addr (cont)| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type ?+1 [To be assigned by IANA] Secondary IPv6 SIP Server Address Option Length 18 Sec-IPv6-SIP-Server Addr The 128-bit Secondary-IPv6-SIP-Server Address is the IPv6 address of the secondary SIP server to be used by the local peer. Setting these 128-bit to zero requests that the peer provide the address information in a Config-Nak packet. Default Tacsik Expires May 19, 2004 [Page 5] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 By default, no secondary SIP addrss is provided. Tacsik Expires May 19, 2004 [Page 6] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 3. Security Considerations No new threats are introduced by this proposal. Tacsik Expires May 19, 2004 [Page 7] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 References [1] Simpson, W., "The Point-to-Point Protocol", RFC 1661, July 1994. [2] Schulzrinne, H., Schooler, J. and J. Rosenberg, "SIP: session initiation protocol", RFC 2543, March 1999. Author's Address Ernie Tacsik Nokia 6000 Connection Drive Irving, TX 75039 Phone: +1(972)894-4044 EMail: ernie.tacsik@nokia.com Tacsik Expires May 19, 2004 [Page 8] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 Appendix A. Acknowledgements Tacsik Expires May 19, 2004 [Page 9] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 Intellectual Property Statement The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards-related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director. Full Copyright Statement Copyright (C) The Internet Society (2003). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assignees. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION Tacsik Expires May 19, 2004 [Page 10] Internet-Draft IPCP option for IPv6 SIP Proxy address November 2003 HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Acknowledgment Funding for the RFC Editor function is currently provided by the Internet Society. Tacsik Expires May 19, 2004 [Page 11] Network Working Group E. Tacsik Internet-Draft Nokia Expires: May 19, 2004 November 19, 2003 IPv6CP option for SIP Proxy address draft-tacsik-pppext-ipv6cp-opt-sip-proxy-00.txt Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http:// www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on May 19, 2004. Copyright Notice Copyright (C) The Internet Society (2003). All Rights Reserved. Abstract This document defines a new PPP IPCP CONFIGURATION OPTION TYPE for returning the addresses of IPv6 SIP proxy server(s). This option provides one mechanism that a system may use to locate IPv6 SIP proxy server(s). This approach is applicable for a system that is using IPv6 over PPP for the link layer protocol and IPv6 address allocation. Tacsik Expires May 19, 2004 [Page 1] Internet-Draft IPv6CP option for SIP Proxy address November 2003 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Configuration Options . . . . . . . . . . . . . . . . . . . . 4 2.1 Primary IPv6 SIP Server Address Option . . . . . . . . . . . . 4 2.2 Secondary IPv6 SIP Server Address Option . . . . . . . . . . . 5 3. Security Considerations . . . . . . . . . . . . . . . . . . . 7 Author's Address . . . . . . . . . . . . . . . . . . . . . . . 8 References . . . . . . . . . . . . . . . . . . . . . . . . . . 8 A. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9 Intellectual Property and Copyright Statements . . . . . . . . 10 Tacsik Expires May 19, 2004 [Page 2] Internet-Draft IPv6CP option for SIP Proxy address November 2003 1. Introduction The SIP (Session Initiation Protocol)[2] is a signaling protocol used for session invitation, modification, and termination. The UAC (User Agent Client) sends a request to the UAS (User Agent Server). However, the request message (INVITE) is not directly sent to the callee UAS, it rather goes through proxy servers and possibly redirect servers. This draft specifyies one mechanism that a system may use to locate IPv6 SIP proxy server(s). This draft specifies a PPP IPCP CONFIGURATION OPTION TYPE that allows IPv6 SIP clients to locate a list of IPv6 SIP proxy servers that are to be used for all IPv6 SIP requests. This approach is applicable to a system utilizing IP Version 6 over PPP [3] for its link layer protocol and IPv6 address allocation (e.g. 3GPP2 Packet Data Networks). Tacsik Expires May 19, 2004 [Page 3] Internet-Draft IPv6CP option for SIP Proxy address November 2003 2. Configuration Options The PPP IPCP Configuration Option format and the basic options are defined in RFC 2472 [3]. This document defines two new options: Primary IPv6 SIP Server Address and Secondary IPv6 SIP Server Address. 2.1 Primary IPv6 SIP Server Address Option Description This PPP IPCP Configuration Option is used for negotiating with the remote peer the address of the Primary IPv6 SIP Server Address to be used on the local end of the link. A summary of the Primary IPv6 SIP Server Address Configuration Option format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | TYPE | Length | Prim-IPv6-SIP-Server Addr | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Prim-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Prim-IPv6-SIP-Server Addr(cont)| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ type ? [To be assigned by IANA] Primary IPv6 SIP Server Address Option Length 18 Prim-IPv6-SIP-Server-Addr The 128-bit Primary IPv6 SIP Server Address is the IPv6 address of the primary proxy SIP server to be used by the local peer. Setting these 128-bits to zero requests that the peer provide the address information in a Config-Nak packet. Tacsik Expires May 19, 2004 [Page 4] Internet-Draft IPv6CP option for SIP Proxy address November 2003 Default By default, no primary server address is provided. 2.2 Secondary IPv6 SIP Server Address Option Description This PPP IPCP Configuration Option is used for negotiating with the remote peer the address of the secondary SIP Server Address to be used on the local end of the link. A summary of the Secondary IPv6 SIP Server Address Configuration Option format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | TYPE | Length | Sec-IPv6-SIP-Server Addr | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sec-IPv6-SIP-Server Addr (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |Sec-IPv6-SIP-Server Addr (cont)| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type ?+1 [To be assigned by IANA] Secondary IPv6 SIP Server Address Option Length 18 Sec-IPv6-SIP-Server Addr The 128-bit Secondary-IPv6-SIP-Server Address is the IPv6 address of the secondary SIP server to be used by the local peer. Setting these 128-bit to zero requests that the peer provide the address information in a Config-Nak packet. Default Tacsik Expires May 19, 2004 [Page 5] Internet-Draft IPv6CP option for SIP Proxy address November 2003 By default, no secondary SIP addrss is provided. Tacsik Expires May 19, 2004 [Page 6] Internet-Draft IPv6CP option for SIP Proxy address November 2003 3. Security Considerations No new threats are introduced by this proposal. Tacsik Expires May 19, 2004 [Page 7] Internet-Draft IPv6CP option for SIP Proxy address November 2003 References [1] Simpson, W., "The Point-to-Point Protocol", RFC 1661, July 1994. [2] Schulzrinne, H., Schooler, J. and J. Rosenberg, "SIP: session initiation protocol", RFC 2543, March 1999. [3] Haskin, D., "IP Version 6 over PPP", RFC 2472, December 1998. Author's Address Ernie Tacsik Nokia 6000 Connection Drive Irving, TX 75039 Phone: +1(972)894-4044 EMail: ernie.tacsik@nokia.com Tacsik Expires May 19, 2004 [Page 8] Internet-Draft IPv6CP option for SIP Proxy address November 2003 Appendix A. Acknowledgements Tacsik Expires May 19, 2004 [Page 9] Internet-Draft IPv6CP option for SIP Proxy address November 2003 Intellectual Property Statement The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards-related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director. Full Copyright Statement Copyright (C) The Internet Society (2003). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assignees. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION Tacsik Expires May 19, 2004 [Page 10] Internet-Draft IPv6CP option for SIP Proxy address November 2003 HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Acknowledgment Funding for the RFC Editor function is currently provided by the Internet Society. Tacsik Expires May 19, 2004 [Page 11]