RADIUS Extensions for IP Port Configuration and Reporting
RFC 8045

Document Type RFC - Proposed Standard (January 2017; Errata)
Last updated 2017-05-02
Replaces draft-cheng-radext-ip-port-radius-ext, draft-cheng-behave-cgn-cfg-radius-ext
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Lionel Morand
Shepherd write-up Show (last changed 2016-08-04)
IESG IESG state RFC 8045 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Kathleen Moriarty
Send notices to radext@ietf.org
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                          D. Cheng
Request for Comments: 8045                                        Huawei
Category: Standards Track                                    J. Korhonen
ISSN: 2070-1721                                     Broadcom Corporation
                                                            M. Boucadair
                                                                  Orange
                                                            S. Sivakumar
                                                           Cisco Systems
                                                            January 2017

       RADIUS Extensions for IP Port Configuration and Reporting

Abstract

   This document defines three new RADIUS attributes.  For devices that
   implement IP port ranges, these attributes are used to communicate
   with a RADIUS server in order to configure and report IP transport
   ports as well as mapping behavior for specific hosts.  This mechanism
   can be used in various deployment scenarios such as Carrier-Grade
   NAT, IPv4/IPv6 translators, Provider WLAN gateway, etc.  This
   document defines a mapping between some RADIUS attributes and IP Flow
   Information Export (IPFIX) Information Element identifiers.

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 7841.

   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/rfc8045.

Cheng, et al.                Standards Track                    [Page 1]
RFC 8045              RADIUS Extensions for IP Port         January 2017

Copyright Notice

   Copyright (c) 2017 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.

Cheng, et al.                Standards Track                    [Page 2]
RFC 8045              RADIUS Extensions for IP Port         January 2017

Table of Contents

   1. Introduction ....................................................4
   2. Terminology .....................................................5
      2.1. Requirements Language ......................................6
   3. Extensions of RADIUS Attributes and TLVs ........................7
      3.1. Extended Attributes for IP Ports ...........................7
           3.1.1. IP-Port-Limit-Info Attribute ........................7
           3.1.2. IP-Port-Range Attribute .............................9
           3.1.3. IP-Port-Forwarding-Map Attribute ...................12
      3.2. RADIUS TLVs for IP Ports ..................................15
           3.2.1. IP-Port-Type TLV ...................................16
           3.2.2. IP-Port-Limit TLV ..................................17
           3.2.3. IP-Port-Ext-IPv4-Addr TLV ..........................18
           3.2.4. IP-Port-Int-IPv4-Addr TLV ..........................19
           3.2.5. IP-Port-Int-IPv6-Addr TLV ..........................20
           3.2.6. IP-Port-Int-Port TLV ...............................21
           3.2.7. IP-Port-Ext-Port TLV ...............................22
           3.2.8. IP-Port-Alloc TLV ..................................23
           3.2.9. IP-Port-Range-Start TLV ............................24
           3.2.10. IP-Port-Range-End TLV .............................25
           3.2.11. IP-Port-Local-Id TLV ..............................25
   4. Applications, Use Cases, and Examples ..........................27
      4.1. Managing CGN Port Behavior Using RADIUS ...................27
           4.1.1. Configure IP Port Limit for a User .................27
           4.1.2. Report IP Port Allocation/Deallocation .............29
           4.1.3. Configure Port Forwarding Mapping ..................31
           4.1.4. An Example .........................................33
      4.2. Report Assigned Port Set for a Visiting UE ................35
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