Diameter Quality-of-Service Application
RFC 5866
Internet Engineering Task Force (IETF) D. Sun, Ed.
Request for Comments: 5866 Alcatel-Lucent
Category: Standards Track P. McCann
ISSN: 2070-1721 Motorola Labs
H. Tschofenig
Nokia Siemens Networks
T. Tsou
Huawei
A. Doria
Lulea University of Technology
G. Zorn, Ed.
Network Zen
May 2010
Diameter Quality-of-Service Application
Abstract
This document describes the framework, messages, and procedures for
the Diameter Quality-of-Service (QoS) application. The Diameter QoS
application allows network elements to interact with Diameter servers
when allocating QoS resources in the network. In particular, two
modes of operation, namely "Pull" and "Push", are defined.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on
Internet Standards is available in Section 2 of RFC 5741.
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/rfc5866.
Copyright Notice
Copyright (c) 2010 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
Sun, et al. Standards Track [Page 1]
RFC 5866 Diameter QoS Application May 2010
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 . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Framework . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Network Element Functional Model . . . . . . . . . . . . . 7
3.2. Implications of Endpoint QoS Capabilities . . . . . . . . 8
3.2.1. Endpoint Categories . . . . . . . . . . . . . . . . . 8
3.2.2. Interaction Modes between the Authorizing Entity
and Network Element . . . . . . . . . . . . . . . . . 9
3.3. Authorization Schemes . . . . . . . . . . . . . . . . . . 10
3.3.1. Pull Mode Schemes . . . . . . . . . . . . . . . . . . 10
3.3.2. Push Mode Schemes . . . . . . . . . . . . . . . . . . 13
3.4. QoS Application Requirements . . . . . . . . . . . . . . . 14
4. QoS Application Session Establishment and Management . . . . . 17
4.1. Parties Involved . . . . . . . . . . . . . . . . . . . . . 17
4.2. Session Establishment . . . . . . . . . . . . . . . . . . 18
4.2.1. Session Establishment for Pull Mode . . . . . . . . . 18
4.2.2. Session Establishment for Push Mode . . . . . . . . . 21
4.2.3. Discovery and Selection of Peer Diameter QoS
Application Node . . . . . . . . . . . . . . . . . . . 24
4.3. Session Re-Authorization . . . . . . . . . . . . . . . . . 24
4.3.1. Client-Side Initiated Re-Authorization . . . . . . . . 25
4.3.2. Server-Side Initiated Re-Authorization . . . . . . . . 26
4.4. Session Termination . . . . . . . . . . . . . . . . . . . 28
4.4.1. Client-Side Initiated Session Termination . . . . . . 28
4.4.2. Server-Side Initiated Session Termination . . . . . . 28
5. QoS Application Messages . . . . . . . . . . . . . . . . . . . 29
5.1. QoS-Authorization Request (QAR) . . . . . . . . . . . . . 30
5.2. QoS-Authorization-Answer (QAA) . . . . . . . . . . . . . . 31
5.3. QoS-Install Request (QIR) . . . . . . . . . . . . . . . . 32
5.4. QoS-Install Answer (QIA) . . . . . . . . . . . . . . . . . 32
5.5. Re-Auth-Request (RAR) . . . . . . . . . . . . . . . . . . 33
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