APANKR Overlay Multicast Working Group Activity

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APAN-KR Overlay Multicast Working Group Activity

• 2003.1.23
• Joonbok Lee
• Computer Science Dept., KAIST
• jblee_at_cosmos.kaist.ac.kr

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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

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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
2.1 Overview

• Motivation
• We had difficulty to watch multicast video
  sessions and experiment multicast research.
• Zooin.net want to test their products.
• Started at October, 2002.

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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
CastBoxCombo(Relay Manager)
K-JIST
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.

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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
CastBoxCombo(Relay Manager)
K-JIST
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/