Transcript Dartmouth Computing Services: An Overview

Converged Service
A Dartmouth Perspective
Bob Johnson
Background
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Campus roughly one mile square
User population is about 10,000
Over 200 buildings/structures
Campus is completely wired
Currently 970 APs deployed
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
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”
First Generation Deployment
• Cisco Aironet 350 series (802.11b)
• Over 500 APs installed
– Every AP tied to the backbone
– Deployed over 18 months
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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
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
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
So….What’s been Converged
• VOIP
– Cisco Call Mgr’s 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, concurrentUnicast
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
Mobilizing Dartmouth
Where we are going
Campus wide access
for students
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Wireless VoIP for faculty
and staff
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Real-time people locator
for faculty and staff
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Wired and Wireless
security monitoring
system
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Secure wireless access
in lecture halls
5
802.1x security keeps
systems secure
6
Wireless Video
enhances teaching
7
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
Automatic Real-time Location
Tracking
 Multi-point triangulation enables
fine granularity (within 3 ft)
RSSI = X
 Real-time location service tracks
radio source as it moves
 Eliminates manual walkabout to
fingerprint RF propagation
 Independent of the radio device
and drivers
The device/user is located
RSSI = Y
RSSI = Z
Policy-based Network Access
Service Delivery Based on Who, What, When, Where and How
• Identity aware
I 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 1:40 pm
• Location aware
I am Matt Green with a laptop using a
soft phone at 1:40 p.m. in the clinic
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
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.