Diameter Command Code Registration for Third Generation Partnership Project (3GPP) Evolved Packet System (EPS)

The Third Generation Partnership Project (3GPP) is defining the Evolved Packet System (EPS) as part of their Release 8 architecture. As part of this architecture, the interfaces based on the Diameter protocol require the definition of two new Diameter applications. The 3GPP S6a/S6d application (vendor-specific application id: 1677251) enables the transfer of subscriber related data between the Mobile Management Entity (MME) and Home Subscriber Server (HSS) on the S6a interface and between the Serving GPRS Support Node (SGSN) and Home Subscriber Server (HSS) on the S6d interface. The 3GPP S13/S13' application (vendor-specific application id: 1677252) enables the Mobile Equipment Identity check procedure between the Mobile Management Entity (MME) and Equipment Identity Register (EIR) on the S13 interface and between the Serving GPRS Support Node (SGSN) and Equipment Identity Register (EIR) on the S13' interface. Both Diameter applications are defined under the 3GPP vendor-id "10415" and are defined in . This document defines the assigned values of the command codes used in these applications.

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.

The 3GPP S6a/S6d application described in section 5 of requires the allocation of command code values for the following command pairs: 3GPP-Update-Location-Request/Answer (ULR/ULA) 3GPP-Cancel-Location-Request/Answer (CLR/CLA) 3GPP-Authentication-Information-Request/ Answer (AIR/AIA) 3GPP-Insert-Subscriber-Data-Request/Answer (IDR/IDA) 3GPP-Delete-Subscriber-Data-Request/Answer (DSR/DSA) 3GPP-Purge-UE-Request/Answer (PUR/PUA) 3GPP-Reset-Request/Answer (RSR/RSA) 3GPP-Notify-Request/Answer (NOR/NOA) The 3GPP S13/S13 application described in section 6 of requires the allocation of a command code value for the following command pair: 3GPP-ME-Identity-Check-Request/Answer (ECR/ECA)

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 namespace that has been defined in the Diameter Base specification . Section 11 of (IANA Considerations) details the assignment criteria. IANA is requested to allocate the following command code values:

This document describes command codes used in applications which build on top of the Diameter base protocol and the same security considerations described in are applicable to this document. No further extensions are required beyond the security mechanisms offered by .

We would like to thank the 3GPP CT4 delegates, Victor Fajardo and Glen Zorn for their review and comments. We would also like to thank Dan Romascanu for volunteering to be AD sponsor and Hannes Tschofenig for volunteering to be Document Shepherd.