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RCA THOMSON SpeedTouchTM (Wireless) Business DSL Router Mapping to internal class

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Chapter 4

IP QoS Framework Overview

E-NIT-CTC-20041213-0013v0.5

28

Mapping to internalclass

The RM module maps packets to the an internal class depending on ATM QoS, VLAN

priority or DSCP settings. The table below shows the relation between these

settings. Once the mapping to the internal classes has been completed the packet

goes through a number of processes like firewall, nat etc. Finally once the packet is

ready for output it will be put in one of the 6 queues based upon its internal class.

INPUT Mapping OUTPUT

ATMQoS

Category

VLAN User

Priority

DiffServ

DSCP

Internal

Class

Queue Label

CBR 7 CS6,CS7 15

5Real

Time

VBR-rt 6 EF

CS5 14

VBR-nrt

(low CDVT) -AF41

CS4 13

4WFQ4

GFR

(low CDVT) -

AF42,AF4

312

VBR-nrt

(high CDVT) -AF31

CS3 11

3WFQ3

GFR

(high CDVT) 5AF32,AF3

310

--

AF21

CS2 9

2WFQ2

-4

AF22,AF2

38

UBR BCS 7 - AF11

CS1 7

1WFQ1

ABR /UBR

BCS 6 3AF12,AF1

36

UBR-mdcr /

UBR BCS 5 --

5

0Best

Effort

UBR / UBR

BCS 4 0CS0

Best Effort 4

UBR BCS 3 - - 3

UBR BCS 2 2 - 2

UBR BCS 1 - - 1

UBR BCS 0 1 - 0

Contents

Main Page Page Page Contents Contents 4 6 Meters, queues and IPQoS......................................... 59 7 Scenario 1: Residential user.......................................85 Page Page About this IPQoS Configuration Guide About this IPQoS Configuration Guide ! Page Chapter 1 1 Document scope Page 2Introduction 2.1 What is Quality of Service? Definition Misunderstandings ! Page 2.2 Relative versus Guaranteed QoS Types of QoS 3 Basic QoS Concepts 3.1 Precedence and TOS Introduction First generation Precedence values Second generation 3.2 Differentiated Services Differentiated Services domain 3.3 Classification and conditioning principles Introduction classifier Traffic classification Traffic conditioning Page 3.4 Differentiated Services Code Point (DSCP) Introduction Per Hop Behaviour Standardized PHBs Page Assured Forwarding (AF) PHB Group: 4 IP QoS Framework Overview 4.1 Main Framework Components Graphical overview QoS Components 4.2 Resource Management Mapping to internal class 5 Packet Classification and Labelling 5.1 Classification Introduction Terminology 5.1.1 Order of classification rules Introduction Routing classification Sub-chains ! Page 5.2 Labels Introduction CLI Command groups ! Label command group Adding a label Label parameters Debug command group 5.2.1 Label parameters explained Introduction Classification Defclass Page Page 5.2.2 Using TOS, DSCP or Precedence Introduction Precedence TOSmarking TOS DSCP 5.2.3 Forwarding parameters. Introduction TTLoverwrite TTL Modify the label parameters Page 5.3 Rules 5.3.1 Rules parameters explained Introduction Srcintf Chain Index Srcip Dstip Serv Page The flush command 5.3.2 Rule debug commands Introduction Traceconfig Traceconfig result Stats 5.4 Chains Page 5.4.1 Define a relation between chains 5.5 Expressions Page Bridgeport Addr Precedence Tos Dscp ! Srcportend Dstport Icmptype Dstportend Page Page 6 Meters, queues and IPQoS 6.1 Meters and queues 6.2 The IPQoS command group Overview IPQoS command group EF command group meter command group Page Page Page MTU explained. EF stats command EF list command Line Speed 6.4 Meter command group Introduction Adding a meter 6.4.1 Meter config command Meter parameters meter config Label Meter config parameters explained Name Intf Droprate Markrate Burst Page Dscp Precedence Class Classification Meter delete command Meter list command Meter start command Meter stop command Meter flush command Meter stats command 6.4.2 Packet flow Illustration Classification Metering 6.5 Queue command group Introduction Queue config command 6.5.1 Queue config parameters explained Dest Ecnmarking Queue Propagate Data ACK1Data DataACK2 Example Maxpackets Respackets Maxbytes Resbytes Hold Markprob Queue list command Queue stats command Queue clear command 6.6 IPQoS Command group Introduction ipqos config command 6.6.1 Ipqos config parameters explained Introduction Dest Discard State ! Priority Realtimerate Burstsize Weight Maxpackets Maxbytes Ipqos list command 7 Scenario 1: Residential user. 7.1 Configuring labels and rules for VoIP. Introduction The web interface Labels Rules Expressions Page 7.2 Configuring labels and rules for DSCP. Introduction Labels Rules Expressions 7.3 Configuring labels and rules for Interactive traffic. Introduction Labels Page Expressions Page Page 8 Scenario 2: Business user with TOS marking. ! 8.1 Labels Page Page Page 8.2 Rules. Page Page Page Page Page Page Page Page 8.3 IPQoS per PVC Page Page Chapter 9 9 Scenario 3: Metering Page Reference List Reference List Page Abreviation List Abreviation List