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diff --git a/doc/rfc/rfc7913.txt b/doc/rfc/rfc7913.txt new file mode 100644 index 0000000..e9a6054 --- /dev/null +++ b/doc/rfc/rfc7913.txt @@ -0,0 +1,227 @@ + + + + + + +Internet Engineering Task Force (IETF) C. Holmberg +Request for Comments: 7913 Ericsson +Updates: 7315 June 2016 +Category: Informational +ISSN: 2070-1721 + + + P-Access-Network-Info ABNF Update + +Abstract + + This document updates RFC 7315, by modifying the extension-access- + info part of the P-Access-Network-Info header field Augmented Backus- + Naur Form (ABNF), and by adding the following 'access-info' header + field parameter values to the list of 'access-info' header field + parameter values in the ABNF: 'operator-specific-GI' and + 'utran-sai-3gpp'. The values are defined in the ABNF but are not + included in the list. + +Status of This Memo + + This document is not an Internet Standards Track specification; it is + published for informational purposes. + + This document is a product of the Internet Engineering Task Force + (IETF). It represents the consensus of the IETF community. It has + received public review and has been approved for publication by the + Internet Engineering Steering Group (IESG). Not all documents + approved by the IESG are a candidate for any level of Internet + Standard; see Section 2 of RFC 7841. + + Information about the current status of this document, any errata, + and how to provide feedback on it may be obtained at + http://www.rfc-editor.org/info/rfc7913. + + + + + + + + + + + + + + + + + +Holmberg Informational [Page 1] + +RFC 7913 PANI ABNF June 2016 + + +Copyright Notice + + Copyright (c) 2016 IETF Trust and the persons identified as the + document authors. All rights reserved. + + This document is subject to BCP 78 and the IETF Trust's Legal + Provisions Relating to IETF Documents + (http://trustee.ietf.org/license-info) in effect on the date of + publication of this document. Please review these documents + carefully, as they describe your rights and restrictions with respect + to this document. Code Components extracted from this document must + include Simplified BSD License text as described in Section 4.e of + the Trust Legal Provisions and are provided without warranty as + described in the Simplified BSD License. + +Table of Contents + + 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 + 2. Update to RFC 7315 . . . . . . . . . . . . . . . . . . . . . 3 + 3. Security Considerations . . . . . . . . . . . . . . . . . . . 3 + 4. Normative References . . . . . . . . . . . . . . . . . . . . 4 + Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 4 + Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4 + +1. Introduction + + [RFC7315] defines the Session Initiation Protocol (SIP) [RFC3261] + P-Access-Network-Info header field. + + The header field syntax contains an 'access-info' header field + parameter, with a set of pre-defined values. Most pre-defined values + follow the 'generic-param' rule [RFC3261]. However, currently the + Augmented Backus-Naur Form (ABNF) [RFC5234] in [RFC7315] requires new + values to follow the 'gen-value' rule [RFC3261], which is more + restrictive than 'generic-param'. There is no justification for the + restriction, and new values have already been defined following the + 'generic-param' rule. + + The ABNF also defines the following 'access-info' header field + parameter values: 'operator-specific-GI' and 'utran-sai-3gpp'. + However, the values are not included in the list of 'access-info' + values. + + This document updates Section 5.4 of [RFC7315], by modifying the + extension-access-info part of the P-Access-Network-Info header field + ABNF. + + + + + +Holmberg Informational [Page 2] + +RFC 7913 PANI ABNF June 2016 + + + As the P-Access-Network-Info header field is mainly used in networks + defined by the 3rd-Generation Partnership Project (3GPP), where new + values following the 'generic-param' rule have been defined + [TS.3GPP.24.229], the update is not considered to cause issues with + backward compatibility. + +2. Update to RFC 7315 + + This section updates the ABNF defined in Section 5.4 of RFC 7315, as + described below: + + Old syntax: + + access-info = cgi-3gpp / utran-cell-id-3gpp / + dsl-location / i-wlan-node-id / + ci-3gpp2 / eth-location / + ci-3gpp2-femto / fiber-location / + np / gstn-location /local-time-zone / + dvb-rcs2-node-id / extension-access-info + np = "network-provided" + extension-access-info = gen-value + + New syntax: + + access-info = cgi-3gpp / utran-cell-id-3gpp / + dsl-location / i-wlan-node-id / + ci-3gpp2 / eth-location / + ci-3gpp2-femto / fiber-location / + np / gstn-location /local-time-zone / + dvb-rcs2-node-id / operator-specific-GI / + utran-sai-3gpp / extension-access-info + np = "network-provided" + extension-access-info = generic-param + +3. Security Considerations + + The security considerations for the P-Access-Network-Info header + field are defined in [RFC7315]. The ABNF update defined in this + document does not impact the security considerations. + + + + + + + + + + + + +Holmberg Informational [Page 3] + +RFC 7913 PANI ABNF June 2016 + + +4. Normative References + + [RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, + A., Peterson, J., Sparks, R., Handley, M., and E. + Schooler, "SIP: Session Initiation Protocol", RFC 3261, + DOI 10.17487/RFC3261, June 2002, + <http://www.rfc-editor.org/info/rfc3261>. + + [RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax + Specifications: ABNF", STD 68, RFC 5234, + DOI 10.17487/RFC5234, January 2008, + <http://www.rfc-editor.org/info/rfc5234>. + + [RFC7315] Jesske, R., Drage, K., and C. Holmberg, "Private Header + (P-Header) Extensions to the Session Initiation Protocol + (SIP) for the 3GPP", RFC 7315, DOI 10.17487/RFC7315, July + 2014, <http://www.rfc-editor.org/info/rfc7315>. + + [TS.3GPP.24.229] + 3GPP, "IP multimedia call control protocol based on + Session Initiation Protocol (SIP) and Session Description + Protocol (SDP); Stage 3", 3GPP TS 24.229 13.5.1, March + 2016, <http://www.3gpp.org/ftp/Specs/html-info/24229.htm>. + +Acknowledgments + + Thanks to Ben Campbell, Cullen Jennings, Gonzalo Salgueiro, Jean + Mahoney, Menachem Dodge, Olafur Gudmundsson, Paul Kyzivat, and the + 3GPP community for providing guidance, input, and comments on the + document. + +Author's Address + + Christer Holmberg + Ericsson + Hirsalantie 11 + Jorvas 02420 + Finland + + Email: christer.holmberg@ericsson.com + + + + + + + + + + + +Holmberg Informational [Page 4] + |