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Video Conference Services Development in China During SARS

Video Conference Services Development in China During SARS. Congxiao Bao , Xing Li China Education and Research Network Center(CERNET) Tsinghua Univ. Congxiao@cernet.edu.cn , xing@cernet.edu.cn. Main points. Why we did? What we did? How we did? What we learnt? Next step. Outline.

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Video Conference Services Development in China During SARS

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  1. Video Conference Services Development in China During SARS Congxiao Bao , Xing LiChina Education and Research Network Center(CERNET) Tsinghua Univ. Congxiao@cernet.edu.cn, xing@cernet.edu.cn

  2. Main points • Why we did? • What we did? • How we did? • What we learnt? • Next step

  3. Outline • CERNET Introduction • Severe SARS situation during April –June, 2003 • CERNET video conference services during SARS • Experiences and observations • Future plan

  4. CERNET Introduction

  5. General Statistics • 20,000km DWDM transport network • 2.5 Gbps and multiple 155 Mbps links to 38 Pops covering all the provincial capitals • 300 Mbps to Global Internet • 100 Mbps to Advanced Networks (APAN、STARTAP、JANET) • 1,200+ universities connected located in 200+ cities • 12M end users • 320M Students in China

  6. 哈尔滨 乌鲁木齐 长春 沈阳 呼和浩特 北京 唐山 天津 银川 石家庄 大连 济南 兰州 太原 烟台 西宁 青岛 郑州 西安 徐州 汉中 南京 成都 无锡 上海 合肥 重庆 武汉 黄梅 宜昌 拉萨 杭州 九江 长沙 南昌 福州 贵阳 台北 桂林 Backbone 昆明 柳州 广州 厦门 Regional 百色 汕头 惠州 GigaPop 深圳 深圳 南宁 湛江 珠海 Pop 徐闻 海口 三亚 CERNET Topology

  7. CERNET Multicast Backbone • Native Multicast Service across 36 Pops all over country • PIM-SM/MBGP/MSDP and 10 Anycast RPs • Multicast routing ACL control • National peer • NSFCNET • International peers • APAN • STARTAP • JANET

  8. rp rp STARTAP APAN-TXP rp R0l BR R0b BR Rx6 BR nqhu BR+rp R1.1 rr s R1a rp R2a rp R2.1 rr s NSFCNET R8a rp CERNET R8.1 rr s R2a rp R3.1 rr s R7.1 rr s R7a rp R4a rp R4.1 rr s R6.1 rr s R6a rp R5.1 rr s R5a rp CERNET Multicast Network

  9. CERNET Multicast Monitoring • Two-layer monitoring system • Backbone • Provincial nodes • Real time and history statistics • CERNET multicast beacon • Multicast traffic monitoring • MBGP monitoring • MSDP monitoring

  10. Severe SARS situation during April –June, 2003 in Beijing and China

  11. Severe Situation • Beijing, from April 21-April 30 • Newly diagnosed SARS patients: 150+/per day • New suspects: 200+/per day • The whole country • Reached 26 provinces • Travels, visits or face to facecommunications were not encouraged • International, national units; universities; student dormitories; or even canteens • Students dated behind iron rail fences • All public activitieswere canceled • Public meetings, classes in primary and high schools • Disinfections were required everyday (during peak epidemic time） • working half time • Disinfect 3 times/day • transportation tools, offices, shops, homes, students dormitories, classrooms, even books • Everyday excises were encouraged

  12. Influences • People were more cautious and were voluntary to cooperate with government • People spent more time at homes and depended more on Internet • More important tasks were needed to keep CERNET daily operation • CERNET Videoconference Service System was started

  13. CERNET Videoconference Services

  14. CERNET Videoconference Service Framework Users video/audio encoder/decoder data sharing Videoconference monitoring Videoconference security Videoconference Service Provider Video conference management Network Access Provider Bandwidth management, multicast service,QoS,

  15. CERNET Video Conference Systems • Multicast • AccessGrid • Windows Platform • Unicast • H.323 • PolyCom Platform

  16. Reflector AG term AG term CERNET multicast Service AG term AG term multicast unicast AG term AG Term AG Term AG Term Multicast VC System

  17. Multicast VC Service (1) • Scale • 20+ Multicast based AG compatible clients • 100+ unicast clients using multiple reflectors • Activities • University presidents reported SARS situations to MOE • Researchers reported SARS research progress to MOST • University presidents working meeting • CERNET NOC day to day routine meetings • Academic exchanges

  18. Multicast VC Service (2) • Lessons • Large scale multicast video conference is a very useful tool especially during SARS • Running large scale multicast video conference system is a great challenge. • Trained human resource is key to success. • Training in the day to day operation is a very effective method. • Full dresses rehearsals before the formal meeting is necessary

  19. Reporting to MOST Univ. presidents reporting to MOE Everyday NOC meeting

  20. H.323 VC System • System • Polycom 20 sites • MCU 1 at CENET center • Mainly for international exchange and cooperation activities • Global Presidents working meeting (APRU2003) • Senior government staff training hosted by the World bank, Beijing office • Overseas applicants reviewed by NSFC • International conferences, International seminars • Internet2 Spring member meeting

  21. Spring Internet2 Member meeting APRU 2003

  22. Future Plan • CERNET2 • Native IPv6 backbone • 20 cities (2.5Gbps - 10 Gbps) • 200 universities • Next Generation Video Conference System to address • Scalability • Security • Mobility • QoS

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