VXLAN GPE Extension for Packets Exchange Between Control and User Plane of vBNG
draft-hu-nvo3-vxlan-gpe-extension-for-vbng-00

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nvo3                                                               S. Hu
Internet-Draft                                                    F. Qin
Intended status: Informational                                     Z. Li
Expires: December 15, 2018                                  China Mobile
                                                                 Z. Wang
                                                                  Huawei
                                                                   T. Ao
                                                                     ZTE
                                                           June 13, 2018

VXLAN GPE Extension for Packets Exchange Between Control and User Plane
                                of vBNG
             draft-hu-nvo3-vxlan-gpe-extension-for-vbng-00

Abstract

   This document briefly describes the architecture of control plane and
   user plane separated vBNG and define the extension of VXLAN-GPE for
   PPPoE/IPoE dialup packets exchange between control plane and user
   plane.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on December 15, 2018.

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   This document is subject to BCP 78 and the IETF Trust's Legal
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   publication of this document.  Please review these documents

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   carefully, as they describe your rights and restrictions with respect
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Abbreviations . . . . . . . . . . . . . . . .   2
   3.  CU separated BNG Requirements . . . . . . . . . . . . . . . .   2
   4.  Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  vBNG service header . . . . . . . . . . . . . . . . . . .   4
     4.2.  Optional solution for vBNG service header . . . . . . . .   5
     4.3.  Inner packets encapsulation and decapsulation . . . . . .   6
     4.4.  User dialup process . . . . . . . . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   For migration of vBNG, one way is separating the control plane(CP)
   and user plane(UP) of traditional BNG.  CP is deployed in centrolized
   cloud DC and UP is fulfilled by high performance hardware device,
   e.g. router, switch, etc.  VXLAN-GPE is used to transfer PPPoE/IPoE
   dialup packets between CP and UP.  This document describes how to
   extend VXLAN-GPE to carry necessary information of access user in
   VXLAN packets.

2.  Terminology and Abbreviations

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   BNG: Broadband Network Gateway.  It is usually the layer 3 edge node
   of ISP's core network and provides users access control for broadband
   service.  It's also known as BRAS(Broadband Remote Access Server) or
   BAS(Broadband Access Server).

3.  CU separated BNG Requirements

   The architecture of C/U separated BNG is shown as the following
   figure.

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                      +----------------------------------+
                      |              BNG-CP              |
                      +--+--------------+--------------+-+
                         |              |              |
                Service  |     Control  |    Management|
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