Remote Authentication Dial In User Service (RADIUS) Protocol Extensions
RFC 6929

Internet Engineering Task Force (IETF)                          A. DeKok
Request for Comments: 6929                                Network RADIUS
Updates: 2865, 3575, 6158                                        A. Lior
Category: Standards Track                                     April 2013
ISSN: 2070-1721

          Remote Authentication Dial-In User Service (RADIUS)
                          Protocol Extensions

Abstract

   The Remote Authentication Dial-In User Service (RADIUS) protocol is
   nearing exhaustion of its current 8-bit Attribute Type space.  In
   addition, experience shows a growing need for complex grouping, along
   with attributes that can carry more than 253 octets of data.  This
   document defines changes to RADIUS that address all of the above
   problems.

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/rfc6929.

Copyright Notice

   Copyright (c) 2013 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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

DeKok & Lior                 Standards Track                    [Page 1]
RFC 6929                    RADIUS Extensions                 April 2013

Table of Contents

   1. Introduction ....................................................3
      1.1. Caveats and Limitations ....................................5
           1.1.1. Failure to Meet Certain Goals .......................5
           1.1.2. Implementation Recommendations ......................5
      1.2. Terminology ................................................6
      1.3. Requirements Language ......................................7
   2. Extensions to RADIUS ............................................7
      2.1. Extended Type ..............................................8
      2.2. Long Extended Type .........................................9
      2.3. TLV Data Type .............................................12
           2.3.1. TLV Nesting ........................................14
      2.4. EVS Data Type .............................................14
      2.5. Integer64 Data Type .......................................16
      2.6. Vendor-Id Field ...........................................16
      2.7. Attribute Naming and Type Identifiers .....................17
           2.7.1. Attribute and TLV Naming ...........................17
           2.7.2. Attribute Type Identifiers .........................18
           2.7.3. TLV Identifiers ....................................18
           2.7.4. VSA Identifiers ....................................18
      2.8. Invalid Attributes ........................................19
   3. Attribute Definitions ..........................................21
      3.1. Extended-Type-1 ...........................................21
      3.2. Extended-Type-2 ...........................................22
      3.3. Extended-Type-3 ...........................................23
      3.4. Extended-Type-4 ...........................................24
      3.5. Long-Extended-Type-1 ......................................25
      3.6. Long-Extended-Type-2 ......................................26
   4. Vendor-Specific Attributes .....................................27
      4.1. Extended-Vendor-Specific-1 ................................28
      4.2. Extended-Vendor-Specific-2 ................................29
      4.3. Extended-Vendor-Specific-3 ................................30
      4.4. Extended-Vendor-Specific-4 ................................31
      4.5. Extended-Vendor-Specific-5 ................................32
      4.6. Extended-Vendor-Specific-6 ................................34
   5. Compatibility with Traditional RADIUS ..........................35
      5.1. Attribute Allocation ......................................35