1 © 2000, Cisco Systems, Inc. Course Number Presentation_ID 802.11 Wireless Applications Education...
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Transcript of 1 © 2000, Cisco Systems, Inc. Course Number Presentation_ID 802.11 Wireless Applications Education...
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1© 2000, Cisco Systems, Inc.
Course NumberPresentation_ID
802.11 Wireless 802.11 Wireless ApplicationsApplications
Education MarketEducation Market
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2Presentation_ID © 2000, Cisco Systems, Inc.
AgendaAgenda
• Educational Trends
• Scenarios
• Interoperability
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3Presentation_ID © 2000, Cisco Systems, Inc.
EducationEducation
• Tie schools together for internet
• Connect remote classrooms (trailers) to main building
• Provide portable network connection to students
• Provide networks in old buildings
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4© 2000, Cisco Systems, Inc.
Course NumberPresentation_ID
ScenariosScenarios
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5Presentation_ID © 2000, Cisco Systems, Inc.
School DistrictSchool DistrictMetropolitan Area NetworkMetropolitan Area Network
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6Presentation_ID © 2000, Cisco Systems, Inc.
Remote ClassroomsRemote Classrooms
Main Building
Trailers
• Connect Classrooms quickly easily
• Provide Network, IP phone, without additional wiring.
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7Presentation_ID © 2000, Cisco Systems, Inc.
Wireless ClassroomWireless Classroom
Maximum CoverageAutorate Negotiation
Wireless for StudentsDiPole Antennas
Class 1 Class 3
Class 1
Hallway
2000’
850’
Class 4 Class 5 Class 5 Class 6 Class 7Class 2
Class 8 Class 10 Class 11 Class 12 Class 13Class 9
AP’s on Isolated LAN with PIX
1
1 6 11 1
6 11 1
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8Presentation_ID © 2000, Cisco Systems, Inc.
Wireless Classroom Wireless Classroom (mobile carts)(mobile carts)
• Mobility: Allows teachers to have internet access anywhere Within the school
• Cost: A dedicated computer room is not needed for internet access.
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9Presentation_ID © 2000, Cisco Systems, Inc.
Outdoor CoverageOutdoor Coverage
Maximum CoverageAutorate Negotiation
Wireless for StudentsDiPole Indoor, Patch Outdoor
Class 1 Class 3
Hallway
1000’
850’
Class 4Class 2
AP’s on Isolated LAN with PIX
Class 8 Class 10 Class 11Class 9
Building Courtyard
1000’
1 6
1 6
11
1
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10Presentation_ID © 2000, Cisco Systems, Inc.
Campus Wide Wireless AccessCampus Wide Wireless Access
Greenville College
Indoor Access withinall buildings on campus
Outdoor Access throughoutthe campus grounds
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11© 2000, Cisco Systems, Inc.
Course NumberPresentation_ID
K-12 Wireless NetworkingK-12 Wireless Networking
Jeffry A. Spain, CCNAJeffry A. Spain, CCNA
Network AdministratorNetwork Administrator
Cincinnati Country Day SchoolCincinnati Country Day School
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12Presentation_ID © 2000, Cisco Systems, Inc.
CCDS DemographicsCCDS Demographics
• Independent school in suburban Cincinnati
• 900 students, pre-K through grade 12
• Technology program that integrates laptop use in all areas of the curriculum
• 675 laptop computers
All faculty and all students in grades 5-12
• Cisco-based campus-wide internetwork
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13Presentation_ID © 2000, Cisco Systems, Inc.
Classroom Network AccessClassroom Network Access
• Requirements for spontaneous use, changing furniture arrangements, and user mobility
• Requirement for good network performance based on applications in use
• Severe cost/performance/convenience issues with wireless prior to 11-Mbps DSSS
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14Presentation_ID © 2000, Cisco Systems, Inc.
Aironet Design ConsiderationsAironet Design Considerations
• Wireless products in general meet classroom flexibility requirements
• Access points laid out to minimize number of users per access point
50 Aironet access points (all diversity antennae)
One per classroom
Others sufficient to cover common areas
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15Presentation_ID © 2000, Cisco Systems, Inc.
11-Mbps DSSS Performance11-Mbps DSSS Performance
• 11-Mbps DSSS provides good performance in a classroom environment
• Cisco Aironet fastest of wireless products tested on isolated data links
• See: http://support.countryday.net/wireless/performance
10Base-T Full Duplex
9.45 Mbps
Cisco Aironet 5.67 Mbps
Lucent WaveLAN 4.93 Mbps
3Com AirConnect 3.79 Mbps
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16Presentation_ID © 2000, Cisco Systems, Inc.
Operational ExperienceOperational Experience
• No performance or coverage complaints
Install Microsoft Office 2000 over wireless
• Fragility of gray plastic antenna cover
Anticipate wireless cards built into laptops
• Occasional access point lockup
Seems to be related to users in marginal coverage areas
Requires power cycling the access point
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17© 2000, Cisco Systems, Inc.
Course NumberPresentation_ID
InteroperabilityInteroperability
Third Party DevicesThird Party Devices
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18Presentation_ID © 2000, Cisco Systems, Inc.
IEEE 802.11 ComplianceIEEE 802.11 ComplianceOffers You…Offers You…
• A very high-performance WLAN system
Efficient MAC and high-quality radio
802.11 products perform better thanproprietary systems
Client interoperability
• WEP standard privacy and authentication
• Standards-based migration path for system growth
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19Presentation_ID © 2000, Cisco Systems, Inc.
WI-FI CertificationWI-FI Certification
• WECA certifies Interoperability between products.
• This provides assurance to customers of migration and integration options.
• Cisco is a founding member of WECA.
• Certified products can be found at www.wi-fi.com
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20Presentation_ID © 2000, Cisco Systems, Inc.
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21Presentation_ID © 2000, Cisco Systems, Inc.
Education CustomersEducation Customers
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Cisco Wireless Training © 2000, Cisco Systems, Inc.