Virtual NAS (vNAS) Support for DNAS
draft-bng-radext-virtual-nas-for-dnas-02

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Last updated 2018-06-04
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Network Working Group                        RaghunadhaReddy. Pocha, Ed.
Internet-Draft                          ChandraShekar. Jamadarkhani, Ed.
Intended status: Standards Track                    Satyanarayana. Danda
Expires: December 5, 2018                                      Nishad. M
                                                   Nagappa. Chinnannavar
                                                           Cisco Systems
                                                            June 3, 2018

                  Virtual NAS (vNAS) Support for DNAS
                draft-bng-radext-virtual-nas-for-dnas-02

Abstract

   This specification defines a framework for interacting North bound
   (AAA/Policy) servers of the Client resides in Cloud and/or
   Distributed Network environment with High-Availability to achieve
   fewer use-cases.  First, NAS Client resides in Cloud or Virtualized
   or Distributed Network Access System to perform Authorization,
   Authentication and Accounting procedures with AAA Servers.  Second,
   AAAA/Policy Servers provide dynamic policy information for
   subscribers of supporting in NAS Clients resides in Cloud or
   Virtualized or Distributed Network environment.  Finally, Handling of
   Accounting related issues in better way for subscribers supported in
   Cloud or Virtualized or Distributed Network environment under High-
   Available conditions.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on December 5, 2018.

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Copyright Notice

   Copyright (c) 2018 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Outline of the document . . . . . . . . . . . . . . . . .   3
     1.2.  General Terminology . . . . . . . . . . . . . . . . . . .   4
     1.3.  Distributed Network Access Systems  . . . . . . . . . . .   4
     1.4.  Processing Dynamic Author Request in DNAS . . . . . . . .   5
   2.  Conventions used in this document . . . . . . . . . . . . . .   6
   3.  Problem Areas . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  AAA Operations in DNAS  . . . . . . . . . . . . . . . . .   6
       3.1.1.  Intimating DNAS/DNAE status to AAA Server . . . . . .   7
       3.1.2.  Dealing with AAA Operations for DNAS with High
               Availability  . . . . . . . . . . . . . . . . . . . .   7
     3.2.  AAA Operations in AAA Server  . . . . . . . . . . . . . .  10
       3.2.1.  Policy-Enforcement from AAA Server  . . . . . . . . .  10
       3.2.2.  Maintaining Accounting Records on AAA Server for end-
               users . . . . . . . . . . . . . . . . . . . . . . . .  10
   4.  Importance of vNAS in DNAS  . . . . . . . . . . . . . . . . .  10
     4.1.  Defining vNAS for DNAS  . . . . . . . . . . . . . . . . .  11
     4.2.  vNAS for AAA Operations . . . . . . . . . . . . . . . . .  12
     4.3.  vNAS for Dynamic Author Request Processing  . . . . . . .  13
     4.4.  Dealing with vNAS for DNAS under High Available Scenarios  13
   5.  vNAS role in AAA Server for DNAS  . . . . . . . . . . . . . .  14
   6.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .  15
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   10. Informative References  . . . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

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