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Information Model for Describing Network Device QoS Datapath Mechanisms (RFC3670)

IP.com Disclosure Number: IPCOM000021224D
Original Publication Date: 2004-Jan-01
Included in the Prior Art Database: 2004-Jan-06

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Moore: AUTHOR [+5]

Abstract

The purpose of this document is to define an information model to describe the quality of service (QoS) mechanisms inherent in different network devices, including hosts. Broadly speaking, these mechanisms describe the properties common to selecting and conditioning traffic through the forwarding path (datapath) of a network device. This selection and conditioning of traffic in the datapath spans both major QoS architectures: Differentiated Services and Integrated Services.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group B. Moore

Request for Comments: 3670 IBM Corporation

Category: Standards Track D. Durham

Intel

J. Strassner

INTELLIDEN, Inc.

A. Westerinen

Cisco Systems

W. Weiss

Ellacoya

January 2004

Information Model for Describing

Network Device QoS Datapath Mechanisms

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2004). All Rights Reserved.

Abstract

The purpose of this document is to define an information model to

describe the quality of service (QoS) mechanisms inherent in

different network devices, including hosts. Broadly speaking, these

mechanisms describe the properties common to selecting and

conditioning traffic through the forwarding path (datapath) of a

network device. This selection and conditioning of traffic in the

datapath spans both major QoS architectures: Differentiated Services

and Integrated Services.

This document should be used with the QoS Policy Information Model

(QPIM) to model how policies can be defined to manage and configure

the QoS mechanisms (i.e., the classification, marking, metering,

dropping, queuing, and scheduling functionality) of devices.

Together, these two documents describe how to write QoS policy rules

to configure and manage the QoS mechanisms present in the datapaths

of devices.

Moore, et al. Standards Track [Page 1]

RFC 3670 QoS Device Datapath Info Model January 2004

This document, as well as QPIM, are information models. That is,

they represent information independent of a binding to a specific

type of repository.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1. Policy Management Conceptual Model . . . . . . . . . . . 6

1.2. Purpose and Relation to Other Policy Work. . . . . . . . 7

1.3. Typical Examples of Policy Usage . . . . . . . . . . . . 7

2. Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1. Common Needs Of DiffServ and IntServ . . . . . . . . . . 8

2.2. Specific Needs Of DiffServ . . . . . . . . . . . . . . . 9

2.3. Specific Needs Of IntServ. . . . . . . . . . . . . . . . 9

3. Methodology. . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1. Level of Abstraction for Expressing QoS Policies . . . . 10

3.2. Specifying Policy Parameters . . . . . . . . . . . . . . 11

3.3. Specifying Policy Services . . . . . . . . . . . . . . . 12

3.4. Level of Abstraction for Defining QoS Attributes and

Classes. . . . . . . . . . . . . . . . . . . . . . . . . 13

3.5. Characterization of QoS Properties . . . . . . . . . . . 14

3.6. QoS Information Model Derivation . . . . . . . . . . . . 15

3.7. Attribute Representation . . . . . . . . . . . . . . . . 16

3.8. Mental Model . . . ....