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APAN-KR Overlay Multicast Working Group Activity 2003.1.23 Joonbok Lee Computer Science Dept., KAIST jblee@cosmos.kaist.ac.kr Contents Introduction: overlay multicast APAN-KR overlay multicast working group 2.1 Overview 2.2 Goals 2.3 Member Activities 3.1 Testbed

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Apan kr overlay multicast working group activity l.jpg

APAN-KR Overlay Multicast Working Group Activity

2003.1.23

Joonbok Lee

Computer Science Dept., KAIST

jblee@cosmos.kaist.ac.kr


Contents l.jpg

Contents

  • Introduction: overlay multicast

  • APAN-KR overlay multicast working group

    2.1 Overview

    2.2 Goals

    2.3 Member

  • Activities

    3.1 Testbed

    3.2 Digital Video Services

  • Digital Video Services Events

  • Next Phase

    Links


1 introduction l.jpg

1. Introduction

  • IP Multicast

    • Relay on network layer to replicate and deliver data packets to receivers.

    • Difficulties

      Limited router support

      Per-group/source state in routers

      Reliability difficulties

      Congestion-control difficulties

      Undefined pricing model

  • Overlay Multicast

    • Known as Relayed Multicast.

    • Combining application layer multicast with network layer multicast.


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2. APAN-KR overlay multicast working group

  • Motivation

    • We had difficulty to watch multicast video sessions and experiment multicast research.

    • Zooin.net want to test their products.

  • Started at October, 2002.

2.1 Overview


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2.2 Goals

  • To experiment current overlay multicast technology and find practical/research issues.

  • To deploy APAN-KR overlay multicast testbed for multicast research experiments and services.

  • To explore applications which can be serviced on overlay multicast testbed and do experimental service.


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2.3 Member

  • 5 Universities and 1 Company

    • KAIST

    • Chungnam National University

    • Chonnam National University

    • K-JIST

    • Korea University

    • Zooin.net

  • More institutes will participate.


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3. Activities

3.1 Overlay Multicast Testbed

  • Deployed overlay multicast testbed using Zooin.net Castbox™ .

    • Castbox Manager: KAIST (, K-JIST)

    • Castbox Relay: KAIST, CNU, CHNU, K-JIST, Zooin.net

    • Castbox Agent: any nodes which are connecting to the testbed.

  • Will expand it to all participants.

  • Monitored by MRTG.


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Deployed Testbed

Monitor

KAIST APAN Node

CastBox

agent

CastBoxCombo

(Relay+ Manager)

CastBox

agent

CastBox

agent

CastBox

agent

KOREN

Commodity

Internet

CastBox

Relay

K-JIST

CastBoxCombo(Relay+ Manager)

CastBox

agent

CastBox

Relay

CastBox

Relay

Zooin.net

CastBox

agent

CastBox

agent

Chungnam Univ.

Chonnam Univ.


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Testbed Structure

Local multicast

Castbox Relay

Castbox Manager

Castbox Relay

Castbox Relay

Castbox Relay

CastboxAgent

Castbox Relay

Local multicast

Local multicast

Local multicast

Local multicast

Local multicast

CastboxAgent

CastboxAgent

CastboxAgent

Local multicast

Local multicast

Local multicast


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3.2 Digital Video Service

  • Digital Video is a good application on the testbed.

  • Cooperate with APAN-KR digital video working group.

  • WMT (Windows Media Technology) was used.

    • 5 WMT encoders and 1 WMT stream server were set up.

  • 2 live streams are available.

    • 640X480 , 30fps, 1.5Mbps

    • As a source, popular channel (movie and sports) are used.

    • 3 streams will be available soon.News, university lectures and conference netcast are considered as a candidate.


Slide11 l.jpg

Digital Video Service on Testbed

KAIST APAN NODE

WMT Stream Server

IPTV

Server (?)

CastBox

agent

Encoder

CastBoxCombo

(Relay+ Manager)

CastBox

agent

CastBox

agent

WMTEncoder

CastBox

agent

Commodity

Internet

KOREN

CastBox

Relay

K-JIST

CastBoxCombo(Relay+ Manager)

CastBox

Relay

CastBox

Relay

WMTEncoder

CastBox

agent

Zooin.net

WMTEncoder

CastBox

agent

WMTEncoder

CastBox

agent

Chungnam Univ.

Chonnam Univ.


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4. Digital Video Service Events

  • Test for massive number of users.

  • 2002.11 Korea vs. Brazil A-Match football game broadcast.

  • 2002.12 Korean Presidential Election broadcast. ( TV debate , Counting of votes broadcast)

  • 2003.4 Neulhui Korean folk dance team performance broadcast.


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Korea vs. Brazil A-Match football game broadcast

  • 2 Streams

    • 640 x 480, 30fps, 1.5Mbps

    • 320 x 240, 30fps, 768Kbps

  • Announce to KAIST sports news group and APAN-KR mailing lists.


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Korea vs. Brazil A-Match football game broadcast

  • Totally 579 users

  • Maximum: 198 users


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Korea vs. Brazil A-Match football game broadcast : Traffic Measurement

  • Traffics of KAIST

    • Max. 60Mbps


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5. Next Phase

  • Testbed

    • Make stable.

    • Make more sites to be participate.

    • Support multicast research experiment.

    • Expand to APAN.

    • No need to concern the bandwidth?

  • Digital video service

    • Test other video format (MPEG1/2, DVTS, … ).

    • Support APAN-KR (or APAN) related workshop netcast.


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Links

  • Working Group Homepage

    http://tv.kr.apan.net/wg/

  • Digital Video Service Homepage

    http://tv.kr.apan.net

  • Testbed Measurement Page

    http://cloud.kaist.apan.net/mrtg/castbox

  • Zooin.net

    http://www.zooin.net/


  • Login