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SpeedTouch™
(Wireless) Business DSL Router
IPQoS Configuration Guide
Release R5.3.0
SpeedTouch™608WL and
SpeedTouch™620 only
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SpeedTouch™ IPQoS Configuration Guide R5.3.0
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Copyright Copyright ©1999-2005 THOMSON. All rights reserved. Passing on, and copying of this document, use and communication of its contents is not permitted without written authorization from THOMSON. The content of this document is furnished for informational use only, may be subject to change without notice, and should not be construed as a commitment by THOMSON. THOMSON assumes no responsibility or liability for any errors or inaccuracies that may appear in this document. Thomson Telecom
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Contents Contents About this IPQoS Configuration Guide...................... 7 1 Document scope ...........................................................9 2 Introduction.................................................................11 2.1 What is Quality of Service?.......................................................... 12 2.2 Relative versus Guaranteed QoS.................................................. 14 3 Basic QoS Concepts....................................................15 3.1 P
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Contents 5.1 Classification ............................................................................... 30 5.1.1 Order of classification rules............................................................................ 31 5.2 Labels........................................................................................... 33 5.2.1 Label parameters explained............................................................................ 35 5.2.2 Using TOS, DSCP or Precedence .....................
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Contents 7.1 Configuring labels and rules for VoIP.......................................... 86 7.2 Configuring labels and rules for DSCP. ....................................... 90 7.3 Configuring labels and rules for Interactive traffic. .................... 92 7.4 IPQoS configuration..................................................................... 95 8 Scenario 2: Business user with TOS marking. .........97 8.1 Labels........................................................................
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About this IPQoS Configuration Guide About this IPQoS Configuration Guide In this configuration This routing configuration guide explains how routes can/must be used in SpeedTouch™ R5.3 products. To explain the use of routes, a distinction is made guide between standard IP forwarding and packet-based classification. All examples start from a clean SpeedTouch™ configuration. Used Symbols A note provides additional information about a topic. A tip provides an alternative method or short-cut to
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About this IPQoS Configuration Guide E-NIT-CTC-20041213-0013 v0.5 8
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Chapter 1 Document scope 1 Document scope Introduction The SpeedTouch™ Release 5.3.0 has a strong Quality of Service (QoS) base that allows classification and forwarding of data to a single or multiple ATM VPI/VCIs with each a set of ATMQoS parameters. IP Quality of Service is an extension to this QoS framework. This configuration guide presents: An introduction on IPQoS An overview of the IPQoS framework An overview of the labels, rules and expressions An overview of the queue, meters an
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Chapter 2 Introduction 2Introduction Introduction This chapter gives a general description and use of Quality of Service. In this chapter Topic Page 2.1 What is Quality of Service? 12 2.2 Relative versus Guaranteed QoS 14 E-NIT-CTC-20041213-0013 v0.5 11
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Chapter 2 Introduction 2.1 What is Quality of Service? Definition Quality of Service is the ability for an application to obtain the network service it requires for successful operation. Nowadays the total amount of data traffic increases, while new types of data emerge, like: voice data, video data, audio data. These new types of data pose new requirements for data transport, e.g. low latency, low data loss… To meet these requirements, the entire network must ensure them via a connection se
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Chapter 2 Introduction Bandwidth versus QoS Quality of Service is really best noticed when the Best Effort service encounters congestion. So a common question is "why not provide more bandwidth, use Best Effort, and get rid of complicated QoS architectures?" There are four answers: First of all, it is less economic to use more bandwidth than to use QoS. Many congestion problems can be resolved by using QoS. The second reason is, Denial of Service (DoS) attacks can always fill links. Even
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Chapter 2 Introduction 2.2 Relative versus Guaranteed QoS Types of QoS There are two different approaches to achieve QoS: Guaranteed QoS: Measurable connection parameters are specified for certain data or for a connection, for example a guaranteed amount of bandwidth or delay across the network. This allows for an exact specification and measurement of the Quality of Service of data or a connection. Examples of “guaranteed QoS” are Integrated Services (IntServ) and ATM QoS like VBR and CBR
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Chapter 3 Basic QoS Concepts 3 Basic QoS Concepts Introduction This chapter provides a brief explanation about: Basic concepts of Quality of Service in general. Precedence and TOS in general The Differentiated Services architecture in detail In this chapter Topic Page 3.1 Precedence and TOS 16 3.2 Differentiated Services 18 3.3 Classification and conditioning principles 20 3.4 Differentiated Services Code Point (DSCP) 22 E-NIT-CTC-20041213-0013 v0.5 15
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Chapter 3 Basic QoS Concepts 3.1 Precedence and TOS Introduction There are two generations of quality of service architectures in the Internet Protocol. The interpretation of the Type of Service Octet in the Internet Protocol header varies between these two generations. The figure below shows the Internet Protocol header. The Type of Service Octet is the second 8-bit octet of the Internet Protocol header. 04 816 31 Version Header Type of Service Total Length Length Identification DM OFF Time t
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Chapter 3 Basic QoS Concepts Precedence values The table below gives the precedence values: Precedence Purpose 0Routine 1Priority 2 Immediate 3Flash 4Flash Override 5CRITIC/ECP 6 Internetwork Control 7 Network Control Note that IP Precedence is obsolete and is only implemented to provide backwards compatibility. Second generation The Differentiated Service Code Point is a selector for router's per-hop behaviours. 012345 67 Differentiated Service Code Point ECT CE The fields ECT and CE are spare
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Chapter 3 Basic QoS Concepts 3.2 Differentiated Services Introduction Differentiated Services (DiffServ) is an architecture which allows service providers to offer different kinds of services to different customers and their traffic streams. Differentiated Services is a framework for scalable service discrimination and allows an approach to modular IPQoS objectives for the needs of various types of applications. The premise to DiffServ networks is that routers within the core of the network
