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Summary: 0 errors (**), 0 flaws (~~), 1 warning (==), 2 comments (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 Network Working Group C. Holmberg 3 Internet-Draft Ericsson 4 Updates: 7315 (if approved) April 8, 2016 5 Intended status: Informational 6 Expires: October 10, 2016 8 P-Access-Network-Info ABNF Update 9 draft-holmberg-dispatch-pani-abnf-03 11 Abstract 13 This document updates RFC 7315, by modifying the extension-access- 14 info part of the P-Access-Network-Info header field Augmented Backus- 15 Naur Form (ABNF), and by adding the following 'access-info' header 16 field parameter values to the list of 'access-info' header field 17 parameter values in the ABNF: 'operator-specific-GI' and 'utran-sai- 18 3gpp'. The values are defined in the ABNF, but are not included in 19 the list. 21 Status of This Memo 23 This Internet-Draft is submitted in full conformance with the 24 provisions of BCP 78 and BCP 79. 26 Internet-Drafts are working documents of the Internet Engineering 27 Task Force (IETF). Note that other groups may also distribute 28 working documents as Internet-Drafts. The list of current Internet- 29 Drafts is at http://datatracker.ietf.org/drafts/current/. 31 Internet-Drafts are draft documents valid for a maximum of six months 32 and may be updated, replaced, or obsoleted by other documents at any 33 time. It is inappropriate to use Internet-Drafts as reference 34 material or to cite them other than as "work in progress." 36 This Internet-Draft will expire on October 10, 2016. 38 Copyright Notice 40 Copyright (c) 2016 IETF Trust and the persons identified as the 41 document authors. All rights reserved. 43 This document is subject to BCP 78 and the IETF Trust's Legal 44 Provisions Relating to IETF Documents 45 (http://trustee.ietf.org/license-info) in effect on the date of 46 publication of this document. Please review these documents 47 carefully, as they describe your rights and restrictions with respect 48 to this document. Code Components extracted from this document must 49 include Simplified BSD License text as described in Section 4.e of 50 the Trust Legal Provisions and are provided without warranty as 51 described in the Simplified BSD License. 53 Table of Contents 55 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 56 2. Update to RFC 7315 . . . . . . . . . . . . . . . . . . . . . 3 57 3. Security Considerations . . . . . . . . . . . . . . . . . . . 3 58 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 59 5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 3 60 6. Change Log . . . . . . . . . . . . . . . . . . . . . . . . . 4 61 7. Normative References . . . . . . . . . . . . . . . . . . . . 4 62 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 5 64 1. Introduction 66 [RFC7315] defines the Session Initiation Protocol (SIP) [RFC3261] P- 67 Access-Network-Info header field. 69 The header field syntax contains an 'access-info' header field 70 parameter, with a set of pre-defined values. Most pre-defined values 71 follow the 'generic-param' rule [RFC3261]. However, currently the 72 Augmented Backus-Naur Form (ABNF) [RFC5234] in [RFC7315] requires new 73 values to follow the 'gen-value' rule [RFC3261], which is more 74 restrictive than 'generic-param'. There is no justification for the 75 restriction, and new values have already been defined following the 76 'generic-param' rule. 78 The ABNF also defines the following 'access-info' header field 79 parameter values: 'operator-specific-GI' and 'utran-sai-3gpp'. 80 However, the values are not included in the list of 'access-info' 81 values. 83 This document updates section 5.4 of [RFC7315], by modifying the 84 extension-access-info part of the P-Access-Network-Info header field 85 ABNF. 87 As the P-Access-Network-Info header field is mainly used in networks 88 defined by the 3rd-Generation Partnership Project (3GPP), where new 89 values following the 'generic-param' rule have been defined 90 [TS.3GPP.24.229], the update is not seen to cause backward 91 compatibility concerns. 93 2. Update to RFC 7315 95 This section updates the ABNF defined in section 5.4 of RFC 7315, as 96 described below: 98 Old syntax: 100 access-info = cgi-3gpp / utran-cell-id-3gpp / 101 dsl-location / i-wlan-node-id / 102 ci-3gpp2 / eth-location / 103 ci-3gpp2-femto / fiber-location / 104 np / gstn-location /local-time-zone / 105 dvb-rcs2-node-id / extension-access-info 106 np = "network-provided" 107 extension-access-info = gen-value 109 New syntax: 111 access-info = cgi-3gpp / utran-cell-id-3gpp / 112 dsl-location / i-wlan-node-id / 113 ci-3gpp2 / eth-location / 114 ci-3gpp2-femto / fiber-location / 115 np / gstn-location /local-time-zone / 116 dvb-rcs2-node-id / operator-specific-GI / 117 utran-sai-3gpp / extension-access-info 118 np = "network-provided" 119 extension-access-info = generic-param 121 3. Security Considerations 123 The security considerations for the P-Access-Network-Info header 124 field are defined in [RFC7315]. The ABNF update defined in this 125 document does not impact the security considerations. 127 4. IANA Considerations 129 This document makes no requests from IANA. 131 5. Acknowledgments 133 TBD 135 6. Change Log 137 [RFC EDITOR NOTE: Please remove this section when publishing] 139 Changes from draft-holmberg-dispatch-pani-abnf-02 141 o Changes based on AD review by Ben Campbell. 143 o - 'Conventions' section removed, as the draft does not contain any 144 RFC 2119 keywords. 146 o - Reference to RFC 2119 removed. 148 o 'operator-specific-GI' and 'utran-sai-3gpp' values added to list 149 of 'access-info' values. 151 o 24.229 reference version updated. 153 Changes from draft-holmberg-dispatch-pani-abnf-01 155 o - Editorial fixes based on comments from Jean Mahoney. 157 o - Reference to 3GPP 24.229 added. 159 Changes from draft-holmberg-dispatch-pani-abnf-00 161 o - Category changed to 'Informational'. 163 7. Normative References 165 [RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, 166 A., Peterson, J., Sparks, R., Handley, M., and E. 167 Schooler, "SIP: Session Initiation Protocol", RFC 3261, 168 DOI 10.17487/RFC3261, June 2002, 169 . 171 [RFC5234] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax 172 Specifications: ABNF", STD 68, RFC 5234, 173 DOI 10.17487/RFC5234, January 2008, 174 . 176 [RFC7315] Jesske, R., Drage, K., and C. Holmberg, "Private Header 177 (P-Header) Extensions to the Session Initiation Protocol 178 (SIP) for the 3GPP", RFC 7315, DOI 10.17487/RFC7315, July 179 2014, . 181 [TS.3GPP.24.229] 182 3GPP, "IP multimedia call control protocol based on 183 Session Initiation Protocol (SIP) and Session Description 184 Protocol (SDP);Stage 3", 3GPP TS 24.229 13.5.1, March 185 2016. 187 Author's Address 189 Christer Holmberg 190 Ericsson 191 Hirsalantie 11 192 Jorvas 02420 193 Finland 195 Email: christer.holmberg@ericsson.com