Usage scenarios of Application-aware Networking (APN) for SD-WAN
draft-yang-apn-sd-wan-usecase-01

Document Type Active Internet-Draft (individual)
Authors Feng Yang  , Weiqiang Cheng  , Shuping Peng  , Zhenbin Li 
Last updated 2021-02-18
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Network Working Group                                            F. Yang
Internet-Draft                                                  W. Cheng
Intended status: Informational                              China Mobile
Expires: August 23, 2021                                         S. Peng
                                                                   Z. Li
                                                                  Huawei
                                                       February 19, 2021

    Usage scenarios of Application-aware Networking (APN) for SD-WAN
                    draft-yang-apn-sd-wan-usecase-01

Abstract

   This document describes the usage of Application-aware Networking
   (APN) in SD-WAN scenarios.  In these scenarios, APN is able to
   identify a particular application, steer its traffic flows along
   explicit path across the network, and provide SLA guaranteed network
   services such as low latency and high reliability.

Requirements Language

   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 RFC 2119 [RFC2119].

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Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Usage Scenarios of APN for SD-WAN . . . . . . . . . . . . . .   3
     2.1.  APN for Traffic Steering into Dedicated WAN . . . . . . .   3
     2.2.  APN for Traffic Steering into Particular Cloud  . . . . .   3
     2.3.  APN for Value-added Service Provisioning in SD-WAN  . . .   4
     2.4.  APN for Data Processing in SD-WAN . . . . . . . . . . . .   4
   3.  APN with SRv6 . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Business Model of APN enhanced SD-WAN . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Normative References  . . . . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   As more and more applications are moved to the cloud, the traditional
   WAN architecture starts facing challenges.  Software-defined Wide
   Area Network (SD-WAN) provides a cloud-friendly way of
   interconnecting branch offices and applications in the cloud over any
   combination of transport services such as MPLS and 4G LTE, which is
   able to optimising application performance with low costs.

   Application-aware Networking (APN) is introduced in
   [I-D.li-apn-framework] and [I-D.li-apn-problem-statement-usecases].
   APN conveys application information such as application/user/flow
   identifiers and SLA/service requirements along data packets into
   network [I-D.li-6man-app-aware-ipv6-network] and make the network
   aware of applications and their requirements, so to provide
   corresponding network services and guarantee their SLA requirements.
   The ever-emerging network services such as network slicing and iOAM
   can be further enhanced with the application awareness in the network
   enabled by APN.

   This document describes the usage scenarios of APN for SD-WAN.

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2.  Usage Scenarios of APN for SD-WAN

   This section describes the scenarios that can use APN to meet the
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