Research on design and implementationof Internet measurement infrastructure

Lv Jun

Aug 28, 2003

1. Introduction

2. Analysis of Internet measurement infrastructure

3.Improvement measurement architecture

4. Implementation status

5. Summary

1. Introduction1. Introduction

We require to build a "measurement infrastructure"

for the Internet. Some experts make the investigation into the

measurement infrastructure : NIMI, IPMA, etc But these infrastructures also have some problems. Proposing an improvement architecture and a specific implementation diagram.

2. Analysis of measurement infrastructure2. Analysis of measurement infrastructure

(1) NIMI(2)IPMA(3)SKITTEROthers

2. Analysis of measurement infrastructure2. Analysis of measurement infrastructure

An architecture for Internet measurement (1) NIMI ： （ National Internet measurement infrastructure ） Goals ： building a "measurement infrastructure" for the Internet. The emphasis: a generalized architecture for scalable measurement inf

rastructure . A scalable architecture may sustain full mesh measurement t

ools and data collection or analysis, the infrastructure maintenance, etc.

Meet the demands of heterogeneity,manageability and controllable.

The infrastructure can be carried out by NPD (Network Probe Daemon),which is deployed on network nodes.

NIMINIMI

Such an infrastructure consists of a collection of measurement "platforms," which are dedicated workstations sited at different locations around the network

platform platform

NIMI ArchitectureNIMI Architecture

NIMI NIMI

NIMI Architecture

CPOC

MC

DAC

NPD

NPD

MC

NPD

DAC

NIMINIMI

NIMI properties ：ScalableFlexibleSecurityProblems ： System crashed and failed to

restart; updates required to NPD or measurement software

IPMAIPMA (2) IPMA ： (Internet performance measurement and an

alysis ) The IPMA project is engaged in the following statistics

research activities: Measurement and analysis of interdomain routing statistics, inclu

ding: route flap, growth of routing tables, network topology, invalid routing announcements,

Experimentation and deployment of the Mapper network topology monitoring tool developed by NLANR.

Real-Time visualization of network routing and performance statistics

IPMAIPMA

The IPMA collects a variety of network and interdomain routing statistics at each of Network Access Points (NAPs).

These statistics provide valuable information on the performance of NAP media, the stability of network service providers, and serve as an early indicator of emerging network problems.

IPMAIPMA

IPMA Architecture

Data Distiller

Salamender

Client

Web Server

Client

Client

BGP Peer

2. Analysis of measurement 2. Analysis of measurement

infrastructureinfrastructure (3) Skitter （ CADIA ）

Measure Forward IP Paths

Measure Round Trip Time Track Persistent Routing changes

Visualize Network Connectivity

2. Analysis of measurement infrastructure2. Analysis of measurement infrastructure

Passive measurement projects: (1)NLANR---PMA project (2)MOAT NAI(Network analysis infrastruc

ture)

（ 3 ） CoralReef (CAIDA software)

ProblemsProblems

System crashed and failed to restart; updates required to NPD or measurement software; disk space exhausted; packet filter misconfigured; clock running berserk, etc.

Hard facilities are incompatible for these infrastructure, data resource and software cannot be shared.

It is difficult to deploy probe on the network backbone. The function and structure of the probing system are complex.

3. Improvement Measurement 3. Improvement Measurement

ArchitectureArchitecture Idea 1.    By improving NPD, we composing network probe

platform (NPP) 2.    Design a client application interface 3.    Use a proxy to store configuration information and

data resource 4.   Establish the measurement information center

（ MIC ） Distributed measurement of hierarchical architecture,

provide data as web report. (IPMA)

NIMI Architecture

CPOC

MC

DAC

NPD

NPD

MC

NPD

DAC

3. Improvement Measurement 3. Improvement Measurement ArchitectureArchitecture

Five parts ： NPP ， CA ， MCC ， DATA ，DAC

DATAMCC

CA

NPP

DAC

NPP

MIC

DAC

NPP NPP

DATA MCC

CA

4. Implementation Status4. Implementation Status (1) Block-diagram Measurement

module(NPP)measurement request

Measurement goal Measurement tools

Measurement 1

Measurement 2…………

Configuration （ MCC)

Client application(CA)

client configuration Client browse

Real time display

Data maintenance

Database(DATA) Data

analysis(DAC)

Information center (MIC)

client

4. 4. Implementation StatusImplementation Status

(2) Implementation Configuration

Data collecting

5. Summary5. Summary

we survey the principle and property of present measurement infrastructure,and propose improving

architecture. we present an implementation block-diagram on the

basis of practical performing design. We have an idea about executing the plan on the

CERNET and have prepared to do some work to facilitate the performing of the plan

The End

Thanks!