Wavetek ANT-20 Manual de usuario

BN 3035/98.32

ANT-20, ANT-20E

Advanced Network Tester

Broadband Analyzer/Generator

BN 3035/90.80

Software Version 7.20

Operating Manual

Please direct all enquiries to your

local Wavetek Wandel Goltermann sales

company. The addresses are given at the

end of this handbook.

Copyrights

This product orparts of it are based upon

Recommendations and/or Standards of the

Standardization Sector of the International

Telecommunication Union- ITU-T and/or of the

European Telecommunications Standards Institute -

ETSI. These Recommendations and Standards are

subject to copyrights of these organizations. Without

written permission of the ITU-T and/or ETSI it isnot

permitted to copy ITU-T Recommendations or ETSI

standards or parts thereof and/or make them available

to third parties.

Wavetek Wandel Goltermann

Eningen GmbH & Co.

Mühleweg 5, 72800 Eningen u. A.

Author: MDD/TD

Translator: JohnNutley

Order no.: BN 3035/98.32

Edition: 06/00.07(V 7.20)

Previous edition:

05/00.04(V 7.10)

Subject to change without notice

Our normal guarantee and delivery

terms apply

Printed in Germany

ANT-20/ANT-20E Broadband Analyzer/Generator

Contents

Introduction

1 Main applications of the Broadband Analyzer/Generator . . . . . . . .I-1

2 Application concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-2

3 Test applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-5

3.1 ATM performance analysis . . . . . . . . . . . . . . . . . . . . . . . . . . .I-5

3.2 Traffic management tests . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-5

3.3 UNI signaling tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-6

3.4 Analysis of ATM signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-6

3.5 Other fields of application . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-6

4 Using and setting up the Broadband Analyzer/Generator . . . . . . . .I-7

5Overview: Virtual Instruments, “VIs” . . . . . . . . . . . . . . . . . . . . . . . . .I-8

6 Often used terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-9

Operation

1 ATM Test Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-1

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-1

1.2 “ATM Test Control” window layout and commands. . . . . . . .O-2

1.3 Important dialog windows . . . . . . . . . . . . . . . . . . . . . . . . . . .O-4

2 ATM Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-7

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-7

2.2 “ATM Test Results” main window layout and commands . . .O-7

2.3 Results window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-9

3 ATM Channel Explorer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-11

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-11

3.2 “ATM Channel Explorer” window layout and commands . .O-12

3.3 Results window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-14

Broadband Analyzer/Generator ANT-20/ANT-20E

4 Port configurations (topologies) and

Instrument Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-16

4.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-16

4.2 The “Instrument Configuration” dialog . . . . . . . . . . . . . . . .O-16

4.3 Port configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-17

4.4 Tx/Rx Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-19

4.4.1 The “ATM Layer” dialog . . . . . . . . . . . . . . . . . . . . . . . . . . .O-19

4.4.2 “Edit Signal Structure”. . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-21

4.5 Signaling emulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-21

4.5.1 The “Signaling Protocol” dialog. . . . . . . . . . . . . . . . . . . . . .O-21

4.5.2 The “Address Input” dialog . . . . . . . . . . . . . . . . . . . . . . . . .O-22

5 Test Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-25

5.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-25

5.2 The “Test Setup” dialog: Setting the Test Type . . . . . . . . .O-26

5.3 The “ATM Layer QoS - Looped Topology” test type. . . . . . O-27

5.4 The “ATM Layer QoS (PVC) - Point-to-point” test type. . . . O-28

5.5 The “ATM Layer QoS (PVC) - Looped” test type . . . . . . . . O-29

5.6 The “ATM Layer QoS (SVC) - Calling” test type. . . . . . . . .O-30

5.7 The “ATM Layer QoS (SVC) - Called” test type . . . . . . . . .O-30

5.8 The “ATM Layer QoS (SVC) - Self Call” test type. . . . . . . .O-31

5.9 The “Test Setup <...>” dialog: Configure test type . . . . . . .O-32

5.9.1 Select channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-33

5.9.2 Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-34

5.9.3 Called party address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-35

5.9.4 Own instrument address. . . . . . . . . . . . . . . . . . . . . . . . . . .O-35

5.9.5 Source parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-36

5.9.6 Multiplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-37

5.9.7 Channel labeling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-37

6 Defining Virtual Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O-38

6.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .O-38

6.2 The “Channel Editor” dialog . . . . . . . . . . . . . . . . . . . . . . . .O-38

6.3 Parameter display and modification (index cards) . . . . . . .O-40

6.3.1 The “General” index card . . . . . . . . . . . . . . . . . . . . . . . . . .O-40

ANT-20/ANT-20E Broadband Analyzer/Generator

iii

6.3.2 The “Header/Address” index card. . . . . . . . . . . . . . . . . . . .O-41

6.3.3 The “Traffic Contract” index card. . . . . . . . . . . . . . . . . . . . .O-43

6.3.4 The “Traffic Contract” index card (continued) . . . . . . . . . . .O-44

6.3.5 The “Traffic Source” index card. . . . . . . . . . . . . . . . . . . . . .O-45

Application Guide

1 The Application Manager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

1.1 Selecting the Instruments for ATM Applications . . . . . . . . . .A-1

1.2 Starting and Stopping the Measurement. . . . . . . . . . . . . . . .A-2

2 ATM Layer Quality of Service Measurements (SVC). . . . . . . . . . . .A-3

2.1 Overview: Basic operating sequence . . . . . . . . . . . . . . . . . .A-3

2.2 Test setup and description . . . . . . . . . . . . . . . . . . . . . . . . . .A-4

2.3 Application settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4

2.3.1 Configuring the Instrument: “ATM Test Control” VI. . . . . . . .A-5

2.3.2 Selecting the Test Type: “ATM Test Control” VI . . . . . . . . . . A-9

2.3.3 Configuring the Test Type: “ATM Test Control” VI . . . . . . .A-10

2.4 Enabling and Disabling Test Traffic:

“ATM Test Control” VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-12

2.5 Editing Test Parameters “On-Line”:

“ATM Test Control” VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-13

2.6 Inserting Errors: “ATM Test Control” VI. . . . . . . . . . . . . . . .A-14

2.7 Displaying the Results: “ATM Test Results” VI . . . . . . . . . . A-15

2.7.1 Preparing to Record Results. . . . . . . . . . . . . . . . . . . . . . . .A-15

2.7.2 Displaying the Signaling Analysis . . . . . . . . . . . . . . . . . . . .A-16

2.7.3 The “Quality Of Service” window. . . . . . . . . . . . . . . . . . . . .A-18

2.7.4 The “Receiver Status” window . . . . . . . . . . . . . . . . . . . . . .A-20

3 Detecting and analyzing ATM channels (Channel Explorer) . . . .A-22

3.1 Overview: Basic operating sequence . . . . . . . . . . . . . . . . .A-22

3.2 Test setup and description . . . . . . . . . . . . . . . . . . . . . . . . .A-23

3.3 Application settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-23

3.4 Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-24

3.4.1 “Activity” Scan:

Detect and Display Active ATM Channels. . . . . . . . . . . . . .A-24

3.4.2 Analyzing the AAL types of active ATM channels. . . . . . . .A-25

3.4.3 Displaying the AAL Type Distribution . . . . . . . . . . . . . . . . .A-26

Broadband Analyzer/Generator ANT-20/ANT-20E

3.4.4 Trouble Scan: Detecting and displaying

ATM Channels where alarms are present . . . . . . . . . . . . . A-27

3.5 Selecting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-29

3.6 Sorting Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-30

Technical Background

1 ATM Traffic Generation and Multiplexing . . . . . . . . . . . . . . . . . . . TB-1

1.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-1

1.2 Generator Principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-2

1.3 Source Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-2

1.3.1 “Constant Bit Rate” source model. . . . . . . . . . . . . . . . . . . . TB-3

1.3.2 “On-Off” source model . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-4

1.4 Traffic Control and Multiplexing Method . . . . . . . . . . . . . . . TB-5

1.5 Traffic Shaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-8

2 Testing Switched Virtual Circuits (SVCs) . . . . . . . . . . . . . . . . . . .TB-9

2.1 General features of the signaling

(Software version 6.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-9

2.2 Interoperability with other instruments . . . . . . . . . . . . . . . . TB-9

2.3 Starting and stopping signaling, generating test traffic . . . TB-10

2.4 “Calling” mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-10

2.5 “Called” mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-13

2.6 “Self Call” mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB-15

Specifications “ATM Layer”

1 Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

1.1 Scrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

1.2 Fill Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

1.3 Cell Header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

1.4 General Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-2

1.4.1 Error Insertion (Anomalies). . . . . . . . . . . . . . . . . . . . . . . . . . S-2

1.4.2 Alarm Generation (Defects) . . . . . . . . . . . . . . . . . . . . . . . . . S-2

1.5 Functions for

ATM Layer Quality of Service Measurements . . . . . . . . . . . S-3

1.5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-3

1.5.2 Error Insertion (Anomalies). . . . . . . . . . . . . . . . . . . . . . . . . . S-3

1.5.3 Alarm Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-3

ANT-20/ANT-20E Broadband Analyzer/Generator

1.5.4 Test Cell Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-3

1.6 Source Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-4

1.6.1 Constant Bit Rate Model . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-4

1.6.2 “On-Off” Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-4

1.7 Traffic Shaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-5

1.7.1 Traffic Shaper for CBR, UBR and DBR Traffic Contracts . . .S-5

1.7.2 Traffic Shaper for VBR and SBR Traffic Contracts . . . . . . . .S-6

2 Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-7

2.1 Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-7

2.2 General Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-7

2.2.1 Error Measurements (Anomalies) . . . . . . . . . . . . . . . . . . . . . S-7

2.2.2 Alarm Detection (Defects). . . . . . . . . . . . . . . . . . . . . . . . . . .S-7

2.2.3 Receiver Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-7

2.3 ATM Layer Quality of Service Measurements. . . . . . . . . . . .S-8

2.3.1 General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-8

2.3.2 Error Related Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . S-8

2.3.3 Delay Related Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .S-8

2.3.4 Alarm Detection (Defects). . . . . . . . . . . . . . . . . . . . . . . . . . .S-9

2.3.5 Other Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-9

2.4 Channel Explorer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-10

2.4.1 Activity Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

2.4.2 Trouble Scan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-10

2.4.3 AAL analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-11

3 Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-12

3.1 Traffic Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-12

3.2 Signaling Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-12

Index

Broadband Analyzer/Generator ANT-20/ANT-20E

Notes:

ANT-20/ANT-20E Broadband Analyzer/Generator

Introduction I-1

Introduction

1 Main applications of the Broadband Analyzer/Generator

ATM is set to change the landscape in WANs and LANs in the coming years. Practically all

network operators view ATM as a key technology in enabling them to provide the required high

quality standard in future services.

With the Broadband Analyzer/Generator the right tool is provided to you for performing ATM

tests in a simply, reliably manner and with highest accuracy.

The tester is particularly suitable for

•commissioning,

•acceptance testing and

•in-service testing of ATM services, switches and networks.

This means that your network management is enhanced to provide performance tests that

guarantee the best possible “Quality of Service”. A special feature, the real-time function

supports the test, which also allows you to optimize the ATM traffic management.

Both SVCs (Switched Virtual Circuits) and PVCs (Permanent Virtual Circuits) are tested

precisely.

Testing of different ATM service categories will be supported directly by the Broadband

Analyzer/Generator.

ATM traffic contracts can be analyzed in detail and can therefore be guaranteed by means of an

acceptance test. The figure below shows the relationship between the ATM Forum and ITU-T

service categories, their traffic descriptions and the minimum guarantee corresponding to the

appropriate traffic contract.

Fig. I-1 Features of ITU-T and ATM Forum traffic contracts

Service

Bandwidth, min CLR

Category Traffic

Description Guarantees

Quality of Service

max CTD, CDVpeak-to-peak

CBR

DBR

nrt-VBR

CBR

ABR

UBR

PCR

and CDVTPCR

PCR, SCR, MBS

CDVTBCR

PCR, MCR

and CDVTPCR

PCR, MCR

and CDVTPCR

PCR, SCR, MBS

CDVTBCR

and CDVTPCR

Bandwidth, min CLR

max CTD, CDVpeak-to-peak

Bandwidth, low CLR for

conforming sources

Bandwidth, min CLR

Broadband Analyzer/Generator ANT-20/ANT-20E

I-2 Introduction

All the test applications have been developed in accordance with the latest information from the

standardization bodies ATM Forum and ITU-T to ensure that they are always up to date.

Your Wavetek Wandel Goltermann Sales Partner can supply the latest information about

software upgrades and new options to keep you abreast of the latest developments in ATM test

technology.

2 Application concept

The Broadband Analyzer/Generator in the ANT-20/ANT-20E is an ATM tester that is equipped

with integrated interfaces. This ensures that the necessary interface is easily accessible when

you are on the move.

Fig. I-2 Comprehensive choice of interfaces for the ANT-20/ANT-20E

The Broadband Analyzer/Generator operates in “Emulate” mode for an UNI interface for most

test applications. This configuration provides the test instrument with characteristics that are

similar to those of an ATM terminal. This configuration also allows signaling emulation to enable

you to make performance measurements using ATM switched virtual circuits. The function is

also used for testing the major characteristics of ATM switches.

ATM tests on SVCs can be performed faster and more effectively since you no longer need to

be concerned with setting up and clearing down the connection.

Otros manuales para ANT-20

Este manual sirve para los siguientes modelos

Tabla de contenidos

Otros manuales de Equipo de prueba de Wavetek

Wavetek

Wavetek 147 Manual de usuario