1:1 Infrastructure for Equitable Mobility
Gary Shuman & George Mallick
Dallas ISD Network Services
Listen to MP3/Audio of Presentation:
- Studying infrastructure deployment for a 1 to 1, specifically as devices go home.
- Lessons Learned and where we are going and why.
- Dallas ISD System
- Mobility Defined
- Off campus connection trial
- New eRate Program
- “To define student mobility and network options”
- Dallas ISD Network Example:
- Network Campus LAN,
- Wireless, Data Centers,
- Digital Classroom, student devices, teacher devices, guest services,
- state of the art technology
- Collapsed data centers down to 2 and
- 500 virtual servers, and 500 actual servers
- Fiber upgrades…also upgraded core and LAN in data centers. 40gig in data centers and between data centers. This allows us to keep them in sync.
- “In a country where we expect free wifi with our coffee, we should definitely demand it in our schools” -President Obama, June 2013.
- Core of the network to the schools was like a traffic jam – 100 mbps
- upgraded to 10gbps…feels like an open highway.
- “There nothing special about wireless networks except that wireless capacity is sometimes less than what you can get, for example, from optical fiber.” Vint Cerf, Leading Telecommunications Architecht, MCI & Google
- Dallas ISD Network diagram…two data centers. Each data center has a 5 gig connection to internet.
- Data connection goes to MDF, then 10gig to IDF closets…using Cisco.
- Dallas is peaking out 3gigs of their 5gigs connection.
- Data Network Delivered Services
- Network connectivity (LAN, Wireless/Mobility)
- Video Distribution (TV)
- Security Cameras
- Telephone & Fax
- Unified messaging
- Internet access
- Time clocks
- energy management
- Mobility: enabling the movement of info to disconnected devices that can be used by a person on the move.
- “I do not think that the wireless waves I have discovered will have any practical application.” Heinrich Hertz
- How do radio waves work video: https://www.youtube.com/watch?v=gLMC5R5Me9c
- The same info resources avail at school should be avail to students at home:
- Online textbooks
- Cloud Computing
- Study Resources
- Distance Learning
- Urban vs Rural
- Urban Challenges: Low income, smartphone only, coverage holes
- Rural Challenges: Lack of data services, Distance, Low-bandwidth
- Wireless study findings
- The purpose of the wireless study was to show how the District can provide a wireless connection to students, which do not have any internet connection, throughout the Dallas urban area.
- Considerations: Filtering, eRate Coverage, Student Responsibilities, Security\
- 802.11 wireless mesh system homing back access points to nearest school or network location
- Fairly successful, strung between buildings in less densely populated areas
- Pros: No equipment to issue to students, multi-point, district ownership with good ROI, no licensing requirements, on district network
- Cons: Expensive, high quanitty of transmitters to maintain; manpower, bandwidth limits, holes in coverage, require coop with City or a Utility
- Microwave – for hard to reach locations, to connected more distant areas
- Pros: No equip to issue to students, district ownership,
- Local ISP such as ATT, Verizon, TW Cable, etc.
- Pros: No equip to issue to students, service fully outsourced, available to high%, less staff req’d to manage
- Cons: Monthly ongoing bill not feasible in large district, traffic is off-district network; routing to filter is complicated
- WiFi Hotspot
- Private LTE
- Pros: No equipment to issue to students, multipoint, district ownership with fair ROI, on district network
- Cons: spectrum avail, high initial capital investment, custom end-device cell card
Funding: We’re looking to see how eRate will help
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