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1 Introduction

The DFN-LAB has developed a system called HADES (HADES Active Delay Evaluation System). HADES is a

tool that provides performance measurements following the IETF approach [RFC3393] and offers IPPM

performance metrics such as One-Way Delay (OWD) [1], One-Way Delay Variation (OWDV) and Packet Loss.

A transmitter station produces groups of UDP-packets (UDP: User Datagram Protocol) in configurable intervals,

signs each packet with a valid timestamp (based on a GPS hardware clock) and a sequence number and

transfers it to a receiving station. The receiver determines precisely the actual receiving time and stores all the

data in a file. With this information the one-way delay, the delay variation and packet loss on a single route can

be determined.

HADES is currently being used for all IP performance measurements at over 57 locations within the X-WiN (the

German R&E Network). HADES measurements are currently also being performed within GÉANT, within the

LHCOPN networks (Large Hadron Collider, CERN) and within NRENs participating in the GÉANT2 MDM

Prototype resulting in more than 100 measurement stations being deployed worldwide yielding data on over

5000 monitored paths. Access to the HADES measurement data is available through the perfSONAR-UI

graphical interface (http://www.perfsonar.net/).The purpose of this document is to provide a guide on how to

properly install HADES. During the installation process, this guide should be used together with the HADES

User’s Guide [2], which focuses primarily on the steps required to install and start HADES in an environment

mainly based on two (or more) points of measurement and a central server. Because of this distribution, the

process presented here involves the manipulation of both a server system and client stations that are in charge

of measuring the network.

This document is organized as follows: Chapter 2 is about the HADES architecture and the hardware

environment which this installation process uses. Subsequently, sections 3.1 and 3.2 in Chapter 3 focus on the

requirements for the installation of HADES. Chapter 4 gives an idea about what steps are useful to do before

the installation process of HADES begins. Chapter 5 describes the installation process itself, and finally,

Chapters 6 and 7 are related to post-installation steps of HADES.

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