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APAN-KR Overlay Multicast Working Group Activity

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

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  1. APAN-KR Overlay Multicast Working Group Activity 2003.1.23 Joonbok Lee Computer Science Dept., KAIST jblee@cosmos.kaist.ac.kr

  2. 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

  3. 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.

  4. 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

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. Korea vs. Brazil A-Match football game broadcast • Totally 579 users • Maximum: 198 users

  15. Korea vs. Brazil A-Match football game broadcast : Traffic Measurement • Traffics of KAIST • Max. 60Mbps

  16. 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.

  17. 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/

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