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Building an effective ICT infras

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Building an effective ICT infras Powered By Docstoc
					       Building an effective ICT
infrastructure for E-Learning at WSU
              eLearning Conference
                November 4, 2009
              C. Walker, ICT Director
                   Agenda
•   E-Learning Requirements
•   Network Types
•   WSU situation
•   Strategy
•   Network Architecture
•   Summary
       E-Learning Requirements
• Typically E-learning Systems have the
  following requirements
  – Many users(students) need access simultaneously
  – Multimedia content such as video and voice
  – Real-time access (live online presentation)
  – Integration with ERP
  – Rapid Growth of Data
                        Network Types
Types            Cost     Typical Speed    Technology

LAN Access       Lowest   10-100Mbps       •Ethernet over Copper Cable
                                           •Ethernet over Radio (Wireless
                                           Access)

Campus Backbone Low       1Gbps - 10Gbps   Ethernet over Fibre



Metro Backbone   Normal   <=100Mbps        •Low range, High Speed Data
                                           Radio
                                           •Metro Ethernet over Fibre

WAN Backbone     High     <=10Mbps         Telecom Carrier Technologies
                                           using MW Radios, Fibre and
                                           Copper
             Special Networks
• SEACOM
  – Provides through TENET low cost, high speed
    Internet to universities through Oceanic Fibres
    from South East Africa to Europe
• SANREN
  – Provides High Speed National Backbone that
    connects Universities and Research centres
    together that allow access to super computers as
    well as the medium for SEACOM
              WSU Situation
• Four Campuses separated by large distances
• Buffalo Campus consists of mostly small sites
  scattered in East London, Potsdam and
  Chiselhurst
• Many Health Resource Centres and small offices
  scattered throughout Eastern Cape
• Main Sites NMD, IBIKA, Queenstown and
  Potsdam located where Public
  Telecommunication Infrastructure is poor
  compared with East London and other major
  South Africa cities.
Typical University



       One Campus
   One Physical Location
         Simple
WSU
      Complex       Opportunity


       Goal
       Build a cost effective
       consolidated Data
       Network that will lower
       the overall cost of
       running separate
       networks whilst
       providing reliable and
       effective services
               WSU ICT Strategy 1/2
Data Network
• Establish Main Hub in East London to enable best connection to
  SANREN and SEACOM and best connections to other sites.
• Establish Wireless Metropolitan Network in East London to connect
  the multiple Buffalo City sites together.
• Establish DR site in EL
• Establish High Availability to the major sites (IBIKA and NMD)
• Build Gigabit LAN Backbones at all sites.
• Use 2Mbps Telkom Diginet for WAN links where there is no Fibre
  infrastructure
• Use dedicated Neotel Metro Ethernet Links (<= 10Mbps) to connect
  to large and critical sites
• Use TENET ADSL for small remote sites.
• Explore Wireless Access for students in 2010
                 WSU ICT Strategy                                 2/2


Services
• Virtualised Server & Consolidated Storage
    – Fast Provision of services
    – Disaster Recovery
• Identity Management System
    – Provides Single Sign-on for all applications
• Quality of service
    – Provide different priorities to different applications, users, or data flows
    – Guarantee a certain level of performance to a data flow.
• Security Fortification
    – Prevent all kinds of denial of service attacks
    – enforce access policies
• WAN acceleration
    – using Cisco WAAS at the major sites
WSU Network Architecture
                  Summary
• QOS to ensure excellent performance of any
  eLearning System
• Security Fortification to prevent DOS and other
  intrusions.
• Use of Cisco WAAS to improve the performance
  at the large sites.
• Storage and Server Consolidation to improve the
  provision of new services
• Consolidation of Telecommunication and Internet
  Links to reduce costs whilst delivering improved
  network performance
Thank You

				
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