Diameter Maintenance and Extensions L. Bertz Internet-Draft Sprint Intended status: Standards Track July 8, 2016 Expires: January 9, 2017 Diameter Per-Flow Max Bitrates draft-bertz-dime-perflowmbr-01 Abstract This document defines optional Diameter attributes for per-flow maximum bit rates. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. 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." This Internet-Draft will expire on January 9, 2017. 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. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November Bertz Expires January 9, 2017 [Page 1] Internet-Draft Diameter Per-Flow Max Bitrates July 2016 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. 1. Introduction This document provides a mechanism for the specification of per-flow maximum bit rates. Such values are used to limit individual IP flow (5 tuple) rates while maintaining a higher aggregate maximum bit rate across aggregate flows. It supplements the various values defined Aggregate Maximum Bitrates such as those specified for IP Mobility [RFC7222]. 2. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. 3. Per Flow AVPs 3.1. Per-Flow-Max-DL-Bit-Rate The Per-Flow-Max-DL-Bit-Rate AVP (AVP Code TBD1) is of type Unsigned32. It specifies the maximum downlink bit rate that is requested/ allocated for each of the mobile node's IP flows. The measurement units are bits per second. 3.2. Per-Flow-Max-UL-Bit-Rate The Per-Flow-Max-UL-Bit-Rate AVP (AVP Code TBD1) is of type Unsigned32. It specifies the maximum uplink bit rate that is requested/ allocated for each of the mobile node's IP flows. The measurement units are bits per second. Bertz Expires January 9, 2017 [Page 2] Internet-Draft Diameter Per-Flow Max Bitrates July 2016 4. IANA Considerations IANA allocated AVP codes in the IANA-controlled namespace registry specified in Section 11.1.1 of [RFC6733] for the following AVPs that are defined in this document. +--------------------------+----------+-----------------+-----------+ | AVP | AVP Code | Section Defined | Data Type | +--------------------------+----------+-----------------+-----------+ | Per-Flow-Max-DL-Bit-Rate | TBD1 | Section 3.1 | Unsiged32 | | | | | | | Per-Flow-Max-UL-Bit-Rate | TBD2 | Section 3.2 | Unsiged32 | +--------------------------+----------+-----------------+-----------+ 5. Relationship to other Max Bit Rate settings The per flow AVPs can be used with any other combination of AVPs representing multiple IP flows (5 tuples). For example, the Per-Flow-Max-DL-Bit-Rate can be used to limit the individual bit rate of any single IP flow while the aggregate rate of the IP flows can be limited by the Aggregate-Max-DL-Bit-Rate AVP [RFC7222]. For example, setting a Per-Flow-Max-DL-Bit-Rate of 2Mbps and an Aggregate-Max-DL-Bit-Rate of 20Mbps would permit up a mimimum of ten IP flows of 2Mbps. Achieving higher throughput is possible through the use of mulitple connections or paths. However, no single IP flow will dominate amongst competing flows. 6. Security Considerations This document defines new AVPs to limit the maximum bitrate of an IP flow (5-tuple) in the mobile devices uplink or downlink. As these are further constraints on Diameter applications already specifying aggregeate maximum bit rates, they do not introduce new security concerns for an Authorized User. For an operator, access to this data may give some insight to how the associated service operates. It is RECOMMENDED that this or any Diameter communication is secured. The Security Considerations of the Diameter protocol itself have been discussed in RFC [RFC6733]. Use of the AVPs defined in this document MUST take into consideration the security issues and requirements of the Diameter base protocol. Bertz Expires January 9, 2017 [Page 3] Internet-Draft Diameter Per-Flow Max Bitrates July 2016 7. References 7.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC6733] Fajardo, V., Ed., Arkko, J., Loughney, J., and G. Zorn, Ed., "Diameter Base Protocol", RFC 6733, DOI 10.17487/RFC6733, October 2012, . 7.2. Informative References [RFC7222] Liebsch, M., Seite, P., Yokota, H., Korhonen, J., and S. Gundavelli, "Quality-of-Service Option for Proxy Mobile IPv6", RFC 7222, DOI 10.17487/RFC7222, May 2014, . Author's Address Lyle Bertz Sprint 6220 Sprint Parkway Overland Park, KS 66251 United States Email: lylebe551144@gmail.com Bertz Expires January 9, 2017 [Page 4]