OpenTAP: Plugin Development Training

Lars Nielsen, Keysight Technologies5G-VINNI WP4, 11/03/20

This project has received funding from the EU’s Horizon 2020 research and innovation programme under grant agreement No 815279.

Agenda• Use case

– Network measurement– Iperf tool

• OpenTAP plugin development– Development resources– Tools and prerequisites

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USE CASEOpenTAP Plugin Development

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Use Case - Iperf Tool• Use case: measure connection performance between

two entities– Example from Introduction to OpenTAP: Ambulance and hospital– Previously showed how it could be done using Hawkeye

• Using the tool Iperf– Measure connection performance between Iperf server and client– Measurements configured and initiated from client– Controlled via command line

• Control remotely using Ssh– Control multiple clients– Automate measurements

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Network to test

Hospital

Ambulance5G

Iperf ServerIperf Client

Cmdvia Ssh

Test traffic

Test scripts

Use Case - Iperf Tool - OpenTAP• Control Iperf via OpenTAP• Iperf OpenTAP plugin

– Control the iperf client “instrument”– Provide test steps to run tests– Easy reusability

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Network to test

Hospital

Ambulance5G

Iperf ServerIperf Client

Cmdvia Ssh

Test traffic

IperfPlugin

OpenTAPEngine

OpenTAPplan

Result Listeners

User Interfaces

Instrument Plugins

DUT Plugins

Test Step Plugins

The OpenTAP architectureDEPENDENCY

PathWave

Automation Engine

DB Storage

CLI

DesktopEditor

Text Log

RabbitMQ

VNF DUT

Custom DUT

Custom Step

ConfigureTool

Custom Inst Custom RL

Custom UI

TUIWeb

Editor

Hawkeye Yardstick

IxLoad

Traffic load step

REST API

OpenTAP Plugin – Development process

• Prototype – Ssh Plugin– Single test step setting up connection and performing command

• Ongoing development – Ssh Plugin– A step to handle the connection– A step to execute a command

• Optimized plugin – Ssh Plugin– An instrument to manage the connection– A step to execute a command

• Packaged for user / customer – Iperf PLugin– Iperf instrument inherit from Ssh instrument– Iperf run measurement step

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Network to test

Hospital

Ambulance5G

Iperf ServerIperf Client

Cmdvia SSH

Test traffic

IperfPlugin

OpenTAPEngine

OpenTAPplan

OPENTAP PLUGIN DEVELOPMENTOpenTAP Plugin Development

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OpenTAP Development Resources

• Project page– https://www.opentap.io/

• Getting started and Developers guide– https://doc.opentap.io/#what-is-opentap

• Gitlab– https://gitlab.com/OpenTAP/opentap

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Prerequisites for Development

• Visual Studio– C# .NET Standard

• OpenTAP– The sequencing engine running the plugin and execute test steps

• Developer’s System CE (Bundle)– Editor CE – To compose test plans using the developed plugins– SDK – Containing code examples – Visual Studio SDK CE – Containing templates and integrates with Visual Studio

• Iperf server and client– Iperf documentation: https://iperf.fr/– IP and user information– Ssh key to Iperf client

• Renci SshNet– Ssh client library (Nugent package)

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DEMOOpenTAP Plugin Development

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Thank you for your attention

Q&A

This project has received funding from the EU’s Horizon 2020 research and innovation programme under grant agreement No 815279.

Resources:OpenTAP: https://www.opentap.io/OpenTAP on Gitlab: https://gitlab.com/OpenTAP/opentap5G-VINNI: https://www.5g-vinni.eu/