Converged Service A Dartmouth Perspective

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Converged ServiceA Dartmouth Perspective

• Bob Johnson

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Background

• Campus roughly one mile square
• User population is about 10,000
• Over 200 buildings/structures
• Campus is completely wired
• Currently 970 APs deployed

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Convergence Vision

• Applications are converging
• Collaboration multimedia
• The economics finally make sense
• Focus resources to support one network
• Must deliver a communications utility
• Wireless IP Phones
• Speech Activated communications
• Streaming Video

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The Wireless Decision-2001

• Dartmouth has a history of investing in
  technology
• Computing is pervasive
• Mandated for students
• Put wireless everywhere and see what happens

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First Generation Deployment

• Cisco Aironet 350 series (802.11b)
• Over 500 APs installed
• Every AP tied to the backbone
• Deployed over 18 months
• Coverage is ubiquitous
• Approximately 2200 active users per day
• Traffic types File sharing, web, email
• No authentication Wireless Frontier
• Standards not set
• Could not mandate client

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Evolving Wireless Vision

• Must deliver converged services
• Same as wired
• Support for emerging services
• Mobility is a given
• Deliver support for latency sensitive services
• Wireless Network must act as a system with
  other computing resources

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Third Generation Wireless

• Develop two wireless layers
• Expand 1st layer for general purpose bandwidth
• Low bandwidth access (802.11b ? g) to higher
  bandwidth
• Develop 2nd layer for high bandwidth latency
  sensitive services (802.11a) (i.e. video, next
  generation voice)
• Increase AP density and thus bandwidth
• Power control
• Built-in site survey, auto config
• Load balance associations
• Reduce or eliminate weak client pulling down
  others
• Build for mobility
• Provide transparent authentication/remediation
  for access to both wired and wireless network

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So.Whats been Converged

• VOIP
• Cisco Call Mgrs supporting hardwired, soft and
  handheld devices
• Vocera Speech Activated communications system
• Video over IP
• Video Furnace encoding 62 channels, Multicast
• VOD pilot to support 50 meg, concurrent-Unicast

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Converged Device Opportunities

• Handheld converged devices provide opportunity
  for partnerships within campus
• Opportunity to solve problems for other
  departments
• ROI often not directly realized by Computing
  Services
• Projects require not only diverse visionary
  support, but fiscal as well

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Mobilizing DartmouthWhere we are going
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Remote Dartmouth Wireless

• Anywhere you have internet access
• APs Phone Home through secure VPN tunnel
• All remote APs have same credentials
• Secure, authenticated access to converged
  communications resources
• VOIP, Video, traditional data
• Virtual Office(your campus office in your home)
• Traveling Faculty, Staff, Students

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Automatic Real-time Location Tracking
RSSI X
RSSI Z
RSSI Y
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Policy-based Network Access
Service Delivery Based on Who, What, When, Where
and How

• Identity awareI am Matt Green, the employee

• Device aware I am Matt Green with a laptop with
  no viruses or worms

• Traffic aware I am Matt Green with a laptop
  using a soft phone

• Time aware I am Matt Green with a laptop using a
  soft phone at 140 pm

• Location aware I am Matt Green with a laptop
  using a soft phone at 140 p.m. in the clinic

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Virtual Attendants

• Use location dependent services to push content
  to users
• Concept of who/where/when
• First implementation is campus tour with Vocera
  Badges
• Working with Library to provide stack attendant
  services in un-staffed locations.
• Other possibilities are campus tours,
  security/escort services

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Conclusion

• While it is the responsibility of Computing
  Services to provide platforms to provide layered
  services, the entire enterprise stands to gain
  from all that convergence to offer.
• For these convergence efforts to be truly
  successful, a true partnership needs to develop
  between CS and the community at large.