Network Working Group R. Atarashi Internet-Draft M. Ninomiya Intended status: Informational Internet Initiative Japan Inc. Expires: May 6, 2009 November 2, 2008 The Model for Net and App Interaction draft-atarashi-netappmodel-01 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on May 6, 2009. Atarashi & Ninomiya Expires May 6, 2009 [Page 1] Internet-Draft The Model for Net and App Interaction November 2008 Abstract This document describes the model for application and network interaction in reaction to Application Area Architecture Workshop held on February 11 and 12, 2008. There is not completed mechanism for collaboration between application and network yet even though a solution is required. The model proposed in this document is designed without a layer violation. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2. Problems . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3. Requirements notation . . . . . . . . . . . . . . . . . . 4 2. Adding Building Block . . . . . . . . . . . . . . . . . . . . 5 3. Network and Application Interaction . . . . . . . . . . . . . 6 4. Security Considerations . . . . . . . . . . . . . . . . . . . 7 5. Normative References . . . . . . . . . . . . . . . . . . . . . 8 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 9 Intellectual Property and Copyright Statements . . . . . . . . . . 10 Atarashi & Ninomiya Expires May 6, 2009 [Page 2] Internet-Draft The Model for Net and App Interaction November 2008 1. Introduction This document describes the model for application and network interaction in reaction to Application Area Architecture Workshop held on February 11 and 12, 2008. There is not completed mechanism for collaboration between application and network yet even though a solution is required. The model proposed in this document is designed without a layer violation. 1.1. Motivation From the application point of view, application users want to use network resources (ex. bandwidth, response time) and new network functions (ex. QoS, VLAN) flexibly. Applications and services have requirements for network behavior depending on the functions provided by the application. For example, a streaming service requires high bandwidth and low delay network, database transactions need no packet-loss network but don't need high bandwidth. From the network point of view, it is useful for operation to know the application behavior. If they can know the requirement from application, it may be possible to prepare the responded environment. It was impossible to change the configurations on demand, but NETCONF can be change the configuration flexibly. Now, it is ready to design the application common architecture, because the components are all together. 1.2. Problems One of the reasons that the collaboration is difficult is that we don't share a common architecture and terminology. There is a gap between application requirements and network functions. Application requirements and behavior are defined by service level, but network functions are implemented by routing and low level configurations. When we have a requirement for network behavior, we have to configure routers using CLI (Command Line Interface). It is hard because we have to master router configuration. And it is impossible that configuration changes automatically and frequently. We need an interface to collaborate between the applications and the network. IMO, the interface is defined not API-like function, but also model-like description. For example, - Application service model - Network function model These kinds of models may be higher level concept than API. As a application user for the NETCONF, the guideline is need to use and combine the application technologies and protocols. Atarashi & Ninomiya Expires May 6, 2009 [Page 3] Internet-Draft The Model for Net and App Interaction November 2008 1.3. Requirements notation 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]. Atarashi & Ninomiya Expires May 6, 2009 [Page 4] Internet-Draft The Model for Net and App Interaction November 2008 2. Adding Building Block At the Application Area Architecture Workshop, we agreed to add the application *semantic* layer which is really what users are interested in, and this is different even from the application *protocol* layer. For example, "jabber" is in the Semantic Layer, "xmpp" is in the Protocol Layer. Layer examples +-----------------+ +----------+ | Semantic Layer | | jabber | +-----------------+ +----------+ | Protocol Layer | | xmpp | +-----------------+ +----------+ | Transport Layer | | TCP/SCTP | +-----------------+ +----------+ | Internet Layer | | IP/IPv6 | +-----------------+ +----------+ | Datalink Layer | | VLAN | +-----------------+ +----------+ | Physical Layer | | Ethernet | +-----------------+ +----------+ Atarashi & Ninomiya Expires May 6, 2009 [Page 5] Internet-Draft The Model for Net and App Interaction November 2008 3. Network and Application Interaction In order to implement to interact with application and network, *Nanagement function* is needed outside the layer. Each layer is managed by the management function. The requirements from the Semantic Layer are conveyed to the management function to implement in the other layer. For example, a "closed network" is requested from the application, an VLAN is implemented in the Datalink Layer. +-----------------+ +------------+ | Semantic Layer |<-->| | +-----------------+ | | | Protocol Layer |<-->| | +-----------------+ | | | Transport Layer |<-->| | +-----------------+ | management | | Internet Layer |<-->| | +-----------------+ | | | Datalink Layer |<-->| | +-----------------+ | | | Physical Layer |<-->| | +-----------------+ +------------+ Management function consists of Managemeng Block and APIs to collaborate with each layer and application, network devices. Management block is application or management scenario suite. Applications make requirement to Managemeng Block through the API, Network devices are configured by Management Block through the API. +-----------------+ +---+-------------+---+ | Semantic Layer |<-->| | | | +-----------------+ | | | |requirements | Protocol Layer |<-->| | | |<-----> Applications +-----------------+ | | | | | Transport Layer |<-->| A | | A | +-----------------+ | P | Management | P |configuration | Internet Layer |<-->| I | Block | I |<-----> Network Devices +-----------------+ | | | | | Datalink Layer |<-->| | | | +-----------------+ | | | | | Physical Layer |<-->| | | | +-----------------+ +---+-------------+---+ Atarashi & Ninomiya Expires May 6, 2009 [Page 6] Internet-Draft The Model for Net and App Interaction November 2008 4. Security Considerations TBD Atarashi & Ninomiya Expires May 6, 2009 [Page 7] Internet-Draft The Model for Net and App Interaction November 2008 5. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. Atarashi & Ninomiya Expires May 6, 2009 [Page 8] Internet-Draft The Model for Net and App Interaction November 2008 Authors' Addresses Ray S. Aatarashi Internet Initiative Japan Inc. Jinbocho-Mitsui Buld., 1-105 Kanda Jinbo-cho, Chiyoda-ku, Tokyo 101-0051 Japan Phone: +81 3 5205 6464 Email: ray@iijlab.net Megumi Ninomiya Internet Initiative Japan Inc. Jinbocho-Mitsui Buld., 1-105 Kanda Jinbo-cho, Chiyoda-ku, Tokyo 101-0051 Japan Phone: +81 3 5205 6464 Email: ninomiya@iij.ad.jp Atarashi & Ninomiya Expires May 6, 2009 [Page 9] Internet-Draft The Model for Net and App Interaction November 2008 Full Copyright Statement Copyright (C) The IETF Trust (2008). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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