P-Access-Network-Info ABNF Update
RFC 7913
| Document | Type |
RFC - Informational
(June 2016; No errata)
Updates RFC 7315
Was draft-holmberg-dispatch-pani-abnf (individual)
|
|
|---|---|---|---|
| Author | Christer Holmberg | ||
| Last updated | 2016-09-13 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | Gonzalo Salgueiro | ||
| Shepherd write-up | Show (last changed 2015-12-14) | ||
| IESG | IESG state | RFC 7913 (Informational) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Ben Campbell | ||
| Send notices to | (None) | ||
| IANA | IANA review state | IANA OK - No Actions Needed | |
| IANA action state | No IANA Actions | ||
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
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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 /
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