ppt information technology for indonesian education network 03 1998

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Information Technology for Indonesian Education Network

Computer Network Research Group Institute of Technology Bandung [email protected]

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Focus

 _{Existing Implemented Infrastructure.}  _{Experience in Building an AII.}

 _{Low Cost Technology To Educate}

Indonesia.

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Our situation

 _{Develop by University}

 _{Implemented & Run by Education}

Sector

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Outline

 _{Historical Perspective}  _{Current Infrastructure.}

 _{Brief overview on our research}

results in:

 _{physical layer.}  _{Network layer.}

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Experience in Internet

building

 January 1993 - Suryono (Texas) install

a packet radio 1200bps to LAPAN.

 _{LAPAN 1200bps to BPPT & Internet}

64Kbps.

 _{286 PC as gateway! to connect the}

whole ITB campus.

 _{Software NOS (running on DOS) as}

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Indonesia Topology Jan.1993

LAN InterNet Universitas Indonesia BPPT LAPAN ITB 1200 bps 2 Meteran

1200 bps UHF

1200 bps UHF LAN InterNet Universitas Indonesia BPPT LAPAN ITB 1200 bps 2 Meteran

1200 bps UHF

Amateur Packet Radio AX.25

at 1200bps

PC Gateway 286!

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ITB in 1995

 _{Telkom Leased Line at 14.4Kbps}

 _{RISTI-Telkom to BPPT 64Kbps.}

 _{ITB uses FreeBSD (UNIX) as Router &}

Server.

 _{For the first time ITB sees Web in}

Internet.

 _{ITB learns to build a campus network}

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Typical ITB Campus Net

Backbone Kampus (Thick Ethernet)

LAN LAN

LAN

PC Router

Server (Novell / UNIX) Server Novell / UNIX

PC Router

Internet

Web Server / DNS PC Gateway

Backbone Kampus (Thick Ethernet)

LAN LAN

LAN

PC Router

Server (Novell / UNIX) Server Novell / UNIX

PC Router

Internet

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ITB Today ....

 _{T1 Satelite link to Japan.}

 _{2Mbps link to Indonesia IX.}

 _{VSAT TDMA & SCPC to various universities.}  _{4Mbps Uwave Jakarta-Bandung.}

 _{128 Kbps to Jakarta, Surabaya & Malang.}

 _{WaveLAN 2Mbps for Metropolitan}

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ITB Network Operation

Center

Internet Exchange

Indonesia Exchange Ethernet

To Japan 1.55Mbps 2Mbps

IX Telkom

VSAT TDMA 128/64Kbps

cache cache _router

router Access Server

ITB Network

router

Jakarta - 4Mbps Malang - 128Kbps Surabaya - 128Kbps

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Internet Exchange

Indonesia Exchange Ethernet

To Japan 1.55Mbps 2Mbps

IX Telkom

cache cache _router

ITB Network

router

Terrestrial Network VSAT SCPC 19.2-64K JCSAT-3 Palapa C1 CDMA 2Mbps AX.25 Packet Radio Internet Exchange Indonesia Exchange Ethernet

To Japan 1.55Mbps 2Mbps

IX Telkom

cache cache _router

ITB Network

router

Terrestrial Network VSAT SCPC 19.2-64K JCSAT-3 Palapa C1 CDMA 2Mbps AX.25 Packet Radio Connection to IIX via RadNet

7 Universities via

VSAT TDMA

SCPC

Connect 3 Universities

Connect to 6 Universities

5 Universities / Research Inst

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Key to Success

Human Resource

Development!

Self-financing!

Community-base

development.

The more people

the lower the cost

Involving students

in the process!

Gives incentives

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Results in Physical Layer

 _{Homebrew 2Mbps CDMA.}

 _{VSAT TDMA vs. SCPC Network.}  Low Cost Access for Schools.

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VSAT TDMA vs. SCPC

 VSAT TDMA 128Kbps Outbound

 VSAT TDMA 64Kbps Inbound

 _{VSAT TDMA is not suitable for Internet}

application (especially Web).

 _{Tune TDM for 40 byte (originally}

256byte packet).

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Homebrew 2Mbps CDMA

 Uses Lucent CDMA 2Mbps card

915MHz 250mW.

 _{Run on FreeBSD.}

 _{Homebrew antenna (cost ~US$150).}

 Max. distance 15km (use PA for more).

 _{Most of our high speed MAN using this}

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Consequences CDMA 2Mbps

 _{bypassing local line.}

 We promote different alternative for

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Homebrew 64-256Kbps

packet radio

 We are prototyping 64-256Kbps packet

radio network in the lab by

[email protected].

 _{AX.25 link layer protocol is used.}

 _{GMSK MX 589 one chip modem is used.}

 _{We drive the modem via parallel port.}

 _{MMIC Minicircuit is being build for}

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Low Cost Access for Schools

 _{AX.25 1200bps Packet Radio}

Network.

 Proxy Server.

 Dial on Demand for Web &

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SMU /

SMP

Proxy &

Dial on Demand

Radio AX.25

Packet Radio Gateway

AX.25 Network

InterNet

SMU /

SMP

Proxy &

Dial on Demand

Radio AX.25

Packet Radio Gateway

AX.25 Network

InterNet

IntraNet for High Schools

24 hours

Packet Radio

E-mail

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Soundblaster Modem

 _{PC running Linux}

 _{Software Modem Packet Radio for}

Soundblaster

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Amateur Radio Network

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AMPR.ORG NET

ITB AMPR GATEWAY (LINUX) INTERNET WORLD WIDE AMPR.ORG VHF (Bandung) 1200 bps HF (Nasional) 1200 bps BANDUNG VHF AMPR.ORG YB-NET AMPR.ORG EN (DOS/NOS) JAKUT VHF 1200 bps JAKUT UHF

9600 bps SALATIGA (DOS/NOS) SALATIGA VHF 1200 bps UMM (DOS/NOS) MALANG VHF 1200 bps ITB GATEWAY ELEKTRINDO NUSANTARA UNIV. MUHAMMADIYAH MALANG

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Application Layer

TCP

AMPRNet IP (44.x.x.x)

InterNet IP

Link Layer (AX.25)

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Results in Network Layer

 _{Network Monitoring by}

[email protected].

 Monitor at http://netmon.itb.ac.id/

 _{Network Map}

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Traffic Distribution Grapher

Describes:

 _{Comparison between Inbound and Outbound}

Traffic

 _{Traffic Distribution by Protocols}

 _{The Most Active Routers/Hosts by Protocols}  _{Daily Usage Trend for some Protocols}

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TDG

Protokol

Host In vs Out

Trend

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Benefits:

 _{Behaviour of the users in ITB (AI3):}

 _{Subjects of interest}

 _{Sites to be visited}

 _{The rush hours}

 _{Most actives computer/host}

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Network Monitoring

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Scotty monitor

Connectivity monitoring

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Scotty monitor

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Web screen http://netmon.itb.ac.id/map.html

Text Map

Timeout alarm

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Web screen

Interface Utility Report

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Results:

 _{Reconfiguration of VSAT TDMA}

interface speed for better performance.

 _{Monitoring the JAMUS (ITB-YWCN) link}

performance.

 _{To Lembong: 99.525 %}

 _{To Surabaya: 85.523 %}

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System Platform:

 _{Pentium 100}

 16 MB RAM

 _{2,1 GB Hard disk}

 _{Operating System: FreeBSD}  _{Main Software: Scotty/Tkined}

(FreeWare) and TCPDUMP.

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Results in Application Layer

 _{Mailing Lists}

 _{English Technical Writting Course}

distance learning test bed.

 Cache & Cache Monitoring.  _{MPEG-3 Test Bed.}

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Cache

 _{ITB has set several Parents cache.}  _{Cache person is [email protected]}

 We cache all of our Web traffic.  check out

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HTTP-Cache: What

 _{Use of Proxy Server}

 _{Previously fetched WWW objects are}

stored in Proxy Server

 _{Proxy Server gives cached WWW}

object instead of fetches it from WWW server

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HTTP-Cache: Why

 _{Web is the most popular application}

on The Net

 _{Web traffic in byte is about 40%}  _{WAN link get congested}

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HTTP-Cache: Facts



HTTP-Cache reduces WAN traffic

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Cache Hierarchy

 _{Cache-Server mesh}

 _{Collaborates using “parent-sibling”}

relationship

 _{Sibling: fetches WWW-object only if it}

is found in local cache

 _{Parent: always fetches requested}

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Cache Hierarchy at ITB

Network

cache-naist1.ai3.net

ns1.itb.ac.id

ns2.itb.ac.id

cache.lib.itb.ac.id cache-en.itb.ac.id

bandung-net

VSAT-net

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Cache Usage Monitoring

 _{Log files}

 _{Daily statistics}

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Results

 _{Over 1.5Gbytes transferred data at a}

normal work-day

 _{Over 400Mbytes transferred data at}

a weekend-day

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Mailing Lists

 _{Uses majordomo on FreeBSD}

 _{Run on Dual Pentium 166MHz 32Mb RAM.}

 _{More than 220 mailing lists at ITB. (more} than 75% Indonesian mailing lists).

 _{More than 10.000 subscribers.}

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Distance Learning

 _{ITB’s Server:}

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Video Conference

 _{25 October 1997: 14:00 Indonesia Time.}

 _{Three Cities: Bandung-Surabaya-Malang}

 _{CU-SeeMe & Its Reflector.}

 _{Aiming for high school network in}

Indonesia.

 _{July 1997: Panel Discussion on the}

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Video on Demand

 _{Supported by Microsoft & Progressive}

Network.

 _{Splitter for UNFCC COP3 December}

1997.

 _{Publisher for “ITB’s Alumny}

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Summary

 _{ITB has managed to integrate 20+}

educational institutions to Internet.

 Major IT used:

 _{2Mbps CDMA Network.}

 _{Web based distance learning.}

 _{Real Publisher / Microsoft NetShow.}

 Key to success:

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References

 _{http://ai3.itb.ac.id/}

 _{http://xxx.itb.ac.id/~yc1dav/}  _{http://xxx.itb.ac.id/~cnrg/}

 _{http://xxx.itb.ac.id/~adnan/}

 _{http://distance-courses.itb.ac.id/}  _{http://virtual-university.itb.ac.id/}  _{http://netmon.itb.ac.id/}

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