Video Conference Services Development in China During SARS

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Video Conference Services Development in China
During SARS

• Congxiao Bao , Xing LiChina Education and
  Research Network Center(CERNET)
• Tsinghua Univ.
• Congxiao_at_cernet.edu.cn, xing_at_cernet.edu.cn

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Main points

• Why we did?
• What we did?
• How we did?
• What we learnt?
• Next step

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Outline

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

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CERNET Introduction
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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

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CERNET Topology
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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

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CERNET Multicast Network
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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

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Severe SARS situation during April June, 2003
in Beijing and China
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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 face communications
  were not encouraged
• International, national units universities
  student dormitories or even canteens
• Students dated behind iron rail fences
• All public activities were 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

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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

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• CERNET Videoconference Services

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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,
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CERNET Video Conference Systems

• Multicast
• AccessGrid
• Windows Platform
• Unicast
• H.323
• PolyCom Platform

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Multicast VC System
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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

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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

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

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Spring Internet2 Member meeting
APRU 2003
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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