Learning with Chromebooks: Well Prepared Network Infrastructure

Learning with Chromebooks Infrastructure Solution – Maximizing Learning ROI with a Well Prepared Network Infrastructure

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Is My Network Infrastructure Ready?

Scale the network to support more devicesDedicated Internet Access (DIA) Several factors influence DIA considerations including use case

(accessing content online, etc.) Google recommends .2 to .5 Mbps per concurrent session at a

minimum for general web browsing and editing Google Drive documents*

WAN connections and equipment Adequate bandwidth from site to DIA

Wireless infrastructure Expect each user to have an average of 2 devices to support Best practice is to support ~25 devices/radio Shift from coverage to capacity

Every active user on a network has a cumulative effect on the bandwidth

usage

Laptop

Chromebook

Convertible

Successful Chromebook deployments depend on sufficient network infrastructure and bandwidth to maximize learning ROI.

*https://support.google.com/chrome/a/answer/3339263?hl=en

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Develop and Implement Your Deployment PlanDefine your usage model Define your Chrome Use Case Implement for your Use Case

Supporting a hybrid Windows/Chrome environment will influence usage model and use case considerations

Google Apps For Education GAFE + Online content, services and

applications access such as LMS, CMS, etc.

Implement your solution elements to support your Usage Model and Use Case

Shared Hybrid Shared/1:1 Windows/

Chrome

1:1

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Spectrum of Usage Models

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Shared Device Model Chrome supports shared models

well – all data is stored in the cloud as opposed to locally

Devices shared amongst many classes which can create contention

Devices typically remain on premise at all times in carts, cabinets, etc. thereby excluding other off premise learning activities

1:1 Model Users are assigned a device Anytime/Anywhere eLearning Supports learning models such as

flipped classroom, etc. that are unsupportable in a shared model

Provides maximum degree of flexibility for all learning models

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Spectrum of Usage Models

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Usage Model – Windows Devices for Teachers/Admins

Teacher/Admin Devices may require: More offline capabilities Traditional Windows applications Support for all usage models and use cases Simplified authentication for greater ease of use

and manageability Access to many of the same features, apps

and extensions with a Chrome browser on the Windows teacher/admin device

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Supporting new or existing Windows devices

in the same environment

Tablets/Detachable

Laptop

Convertible

Laptop

LaptopConvertible

Use Case – Accessing Additional Content and Services Online

Additional Access: Access to additional online

services, content and applications has a cumulative effect on bandwidth consumption

Active User * SUM[GAFE + LMS + CMS + Video]

Google Apps Access LMS CMS Video Content

Bandwidth Consumed

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Solution BlueprintBasic Architecture

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Is this a chromebook in photo?

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Overview of the Path to the Cloud

High level overview of the points along the path to consider: Dedicated Internet Access DIA Security– Firewall/Gateway– Content filter

Wide Area Network– Fiber, MPLS, etc.– Routers– Switches

Wireless Infrastructure

FirewallContent Filter

Infrastructure (WAN, LAN, switches, routers, etc.)

Building Out the Path to the Cloud

Aggregate traffic from all the devices at all of the schools begins to converge at the backbone and progresses along the path out to the Google cloud.

Google Admin Console

LMS

GAFEDocs | Sheets | Slides

FirewallContent Filter

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Diving Deeper to the School Level

The edge of the network has a significant role in providing adequate support for the number of devices. Coverage may have been the primary

consideration for access point deployment topology.

One access point for every 4 classrooms may offer sufficient coverage for a cart of devices that is shared amongst those rooms

Devices move from room to room

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Solution BlueprintFull Deployment

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Adding Devices to the Infrastructure

Points along the path to consider: Dedicated Internet Access and Wide

Area Network - Calculate required bandwidth by use case and number of clients and increase as necessary

DIA Security and Content Filter - Ensure adequately sized for increased traffic

Wireless Infrastructure - Shift from coverage to capacity


LMS



Firewall

Content Filter

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Diving Deeper to the School Level

The access point topology changes as we increase the number of devices. Capacity versus coverage:– Capacity emerges as the primary

consideration– Best practice of ~25 device associations

per radio

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Full deployment

Optimized Path to the Cloud: Wireless coverage in schools Sufficient bandwidth in WAN and backbone

equipment Firewall/Gateway and Content Filter

appropriately sized Sufficient DIA bandwidth.


LMS


CMS/LMS


Firewall

GAFE and other online access to content,

services and applications

Content Filter