Diameter Policy Processing Application

This document summarizes the use of Diameter codes in a newly defined realization of a specification for invocation of policy processing (PEM-1). A new Command Code has been assigned by IANA. The document summarizes the uses of newly defined Diameter codes (a Command Code, an AVP, and a vendor-specific application id). When combined with the Diameter Base protocol, this application's specification satisfies the Open Mobile Alliance (OMA) Policy Evaluation, Enforcement, and Management (PEEM) requirements for sending a request for policy processing and receiving a response with the policy processing result. See for the normative use of Diameter. PEEM requirements are documented in and PEEM Architecture is documented in . The Diameter realization of this application assumes the use of the Diameter Base protocol, as per RFC 3588, and extends it only for a specific application using a vendor-id (PEN), a vendor-specific application ID, a new Command Code (314), and a new AVP defined in the vendor-specific namespace. Input to policy processing are being passed through a new AVP, and policy results are being passed through a combination of the same new AVP, and the Experimental-Result AVP.

The base Diameter specification (Section 1.4 of ) defines most of the terminology used in this document. Additionally, the terms and acronyms defined in are used in this document.

A detailed description of the Diameter Policy Processing Application can be found in Section 5.4.1 of the Policy Evaluation, Enforcement and Management Callable Interface (PEM-1) Technical Specification .

This document describes the Diameter Policy Processing Application. It builds on top of the Diameter Base protocol and the same security considerations described in RFC 3588 are applicable to this document. No further extensions are required beyond the security mechanisms offered by RFC 3588.

This section provides guidance to the Internet Assigned Numbers Authority (IANA) regarding registration of values related to the Diameter protocol, in accordance with BCP 26 . This document defines values in the namespaces that have been created and defined in the Diameter Base . The IANA Considerations section of that document details the assignment criteria. Values assigned in this document, or by future IANA action, must be coordinated within this shared namespace.

This specification assigns the value 314 from the Command Code namespace defined in . See Section 5.4.1.3.1 of for the assignment of 314. IANA has made the following assignment in the "Authentication, Authorization, and Accounting (AAA) Parameters" registry located at http://www.iana.org/assignments/aaa-parameters, in the sub-registry "Command Codes".

Code Value Name Reference -------------- ------------------------------- --------- 314 PDR / PDA [RFC5224]

This specification uses the value 1 for the Policy-Data AVP, in the OMA Vendor-ID (PEN) AVP namespace. See Section 5.4.1.3.3 of for the assignment of the namespace in this specification.

This specification uses the value 16777243 in the Application Identifier namespace as registered in IANA for the Policy Processing Application. See Section 5.4.1.3 of for more information.

The author would like to thank Dan Romascanu and Hannes Tschofenig for their help and support. Finally, the author would like to thank Alcatel-Lucent, as most of the effort put into this document was done while he was in their employ.