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    FWL_v11_Mod01.ppt FWL_v11_Mod01.ppt Presentation Transcript

    • © 2003, Cisco Systems, Inc. All rights reserved.
    • Module 1 Introduction to Wireless LANs
    • Learning Objectives
        • Define and describe WLANs
        • Describe the need and benefits of WLANs.
        • Identify characteristics of Cisco Aironet 802.11a products.
        • Identify characteristics of Cisco Aironet 802.11b products.
    • Overview
        • This module provides an introduction to the rapidly evolving technology of wireless LANs (WLANs). WLANs redefine the way the industry views LANs. Connectivity no longer implies attachment. Wireless networking provides all the features and benefits of traditional LAN technologies without the limitations of wires or cables. The freedom to roam while still maintaining connectivity has helped launch wireless networking to new heights.
    • Key terms
      • WLAN
      • Bridging
      • Access Point
      • Bridge
      • Antenna
      • Wi-Fi ™
    • Major Factors
      • There are four major factors to consider before implementing a wireless network:
      • High availability
      • Scalability
      • Manageability
      • Open architecture
    • Momentum is Building in Wireless LANs
      • Wireless LANs are an “addictive” technology
      • Strong commitment to Wireless LANs by technology heavy-weights
        • Cisco, IBM, Intel, Microsoft
      • Embedded market is growing
        • Laptop PC’s with “wireless inside”
        • PDA’s are next
      • The WLAN market is expanding from Industry-Specific Applications, to Universities, Homes, & Offices
      • Professional installers and technicians will be in demand
    • Wireless LANs Are Taking Off ($ Billions) Source: Forward Concepts, 2003
      • Future Growth Due To:
      • Standards
      • High Bandwidth Needs
      • Low Cost
      • Embedded in Laptops
      • Variety of Devices
      • Voice + Data
      • Multiple Applications
      • Security Issues Solved
      • Ease of Deployment
      • Network Mgmt. Tools
      • Enterprise Adoption
      Worldwide WLAN Market *includes embedded clients, add-on client cards, & infrastructure equipment for both the business and consumer segments CAGR = 43%
    • “ Business-Class”vs Consumer WLAN
      • Industry has segmented: consumer vs. business
      • Cisco offers only “business-class” products:
        • Security
        • Upgradeability
        • Network management
        • Advanced features
        • Choice of antennas
        • Highest throughput
        • Scalability
    • Benefits of WLANs
    • WiFi
    • Unlicensed Frequency Bands
    • Wireless Data Networks Local Wide Coverage Area Satellite Data Rates 9.6 Kbps 19.6 Kbps 56 Kbps 1 Mbps 2 Mbps 10 Mbps 50 Mbps Spread Spectrum Wireless LANs Infrared Wireless LANs Narrow Band Wireless LANs 2.5 GHz Service Broadband PCS Circuit and Packet Data Cellular, CDPD, Mobitex, DataTac Narrowband PCS
    • Wireless Technologies PAN (Personal Area Network) LAN (Local Area Network) WAN (Wide Area Network) MAN (Metropolitan Area Network) PAN LAN MAN WAN Bluetooth Peer-to-Peer Device-to-Device Short <1 Mbps 802.11a, 11b, 11g HiperLAN2 Enterprise Networks Medium 2–54+ Mbps 802.11 MMDS, LMDS Fixed, Last Mile Access Medium–Long 22+ Mbps GSM, GPRS, CDMA, 2.5–3G PDAs, Mobile Phones, Cellular Access Long 10–384 Kbps Standards Speed Range Applications
    • Icons
    • Icons
    • Icons
    • Wireless Technologies
    • WLAN Evolution: 2000–Present
      • Warehousing
      • Retail
      • Healthcare
      • Education
      • Businesses
      • Home
      802.11 Ratified 802.11a,b Ratified 802.11g Drafted
      • IEEE 802.11Begins Drafting
      860 Kbps 900 MHz 1 and 2 Mbps 2.4 GHz Proprietary 1986 1988 1990 1992 1994 1996 1998 2000 2002 1 and 2 Mbps 2.4 GHz 11 Mbps 54 Mbps Standards-based 5 GHz Radio Network Speed
    • Wi-Fi™
      • Wi-Fi™ Alliance
        • Wireless Fidelity Alliance
        • 170+ members
        • Over 350 products certified
      • Wi-Fi’s™ Mission
        • Certify interoperability of WLAN products (802.11)
        • Wi-Fi™ is the “stamp of approval”
        • Promote Wi-Fi ™ as the global standard
    • Components and Topologies
    • WLAN Devices
      • In-building Infrastructure
        • 1200 Series (802.11a and 802.11b)
        • 1100 Series (802.11b)
        • 350 Series (802.11b) not shown
      • Bridging
        • 350 Series (802.11b)
          • BR350
          • WGB350
        • 1400 Series (802.11a)
    • WLAN Devices
      • Antenna
        • 2.4GHz
        • 5 GHz Antennas
      • Clients
        • 350 Series (802.11b)
        • 5 GHz client adapter (802.11a)
        • Workgroup bridge (802.11b)
    • Cable, Accessories, Wireless IP Phone
      • Cable and Accessories
        • Low Loss Cable
        • Antenna Mounts
        • Lightening Arrestor
        • Wireless IP Phone
    • Cisco Aironet 802.11b Client Adapters
      • 2.4 GHz
        • 802.11b
        • 11 Mbps
      • Include
        • PC Card
        • PCI Card
        • LMC Card
        • Mini PCI
    • Cisco Aironet 350 Series Mini PCI Adapter
      • 2.4 GHz/802.11b embedded wireless for notebooks
      • 100 mW transmit power
      • Must order through PC manufactures (not orderable directly through Cisco)
    • Cisco Aironet 802.11a Client Adapter
      • 5 GHz/802.11a
        • 54 Mbps
      • Rate Shifting
        • 6, 9, 12, 18, 24, 36, 48, or 54
      • Fixed data rates
        • User configurable option
      • 5 dBi Patch Antenna
      • CardBus interface
      • Transmit power settings:
        • 20 mW, 10 mW, and 5 mW
    • 1200 Series Access Point
      • Dual radio design
      • Field upgradable radio and software
          • 802.11b radio
            • 100 mW radio
            • Built-in RP-TNC connectors for diversity
            • Wide range of Cisco 2.4 GHz antennas offered
          • 802.11a radio
            • Delivers up to 54 Mbps, the next generation of performance
            • Can run in dual mode capacity with the 802.11b radio
            • Innovative antenna design to fit deployment needs
      • Enterprise-class management and security
    • Cisco Aironet 1100 Series Access Point
      • Single 802.11b radio
        • Time-tested technology
        • Supports installed client-base
      • Upgradable
        • Migration path to 802.11g for further investment return
      • Scalable
        • Fully functional access point ideal for all enterprise deployments without expensive controllers
      • Affordable
        • Lowest priced upgradable Cisco Aironet access point
      • Enterprise-class features
        • End-to-end intelligent networking and security extended to WLAN
    • Enterprise-Class Features on all Cisco Aironet Access Points
      • Cisco IOS (1100 and 1200 Series)
        • End-to-end intelligent network services
        • Familiar service configuration and network behavior
      • VxWorks (350 Series)
        • Easy web-based GUI interface
      • VLANs
        • Network segmentation for flexible policy and service application
      • QoS
        • End-to-end prioritization for applications such as voice and video
      • Proxy Mobile IP
        • Seamless inter-subnet roaming
    • Cisco Aironet WLAN Solutions for the Enterprise
        • Cisco Aironet 1200 Series
        • Cisco Aironet 1100 Series
        • QOS, VLANs, and Proxy Mobile IP
        • QOS, VLANs, and Proxy Mobile IP
        • Cisco IOS operating system
        • Cisco IOS-based operating system
        • Inline and Local Power
        • Inline and Local Power
        • Extra memory and system capacity for future releases
        • Extra memory and system capacity for future releases
        • Industrial environmental specifications, rugged metal case
        • Indoor environmental specifications, durable plastic case
        • Two 2.4 GHz antenna connectors for high gain diversity antennas; integrated 5 GHz antennas
        • Integrated diversity dipole antennas for simplified deployment
        • Dual-mode 802.11a and 802.11b support (upgradable to 802.11g with Advanced Encryption Standard (AES))
        • Single 802.11b radio (upgradable to 802.11g with Advanced Encryption Standard (AES))
        • Outstanding Enterprise Performance and Greatest Flexibility
        • Intelligent Enterprise Services at a Lower Total Cost
    • 350 Series Workgroup Bridge (WGB)
      • 2.4 GHz/802.11b
      • Supports 8 MAC addresses
      • Acts as client to Cisco Aironet access point or bridge when in access point mode
    • 350 Series Bridge (WB)
      • Flexibility: 2.4 GHz/ 802.11b point-to-point and multi-point
      • Management capabilities:
        • SNMP, Telnet, FTP, HTML
        • 802.1D spanning tree
      • Breadth of product line:
        • 11, 5.5, 2, 1 Mbps
        • Antenna/range options
    • Cisco Aironet 1400 Series
      • High Performance
        • Industry leading throughput and range
      • Easy-to-Use
        • Out of the box installation in outdoor environment
      • Flexible
        • Point to point and point to multi-point bridging
        • Multiple mounting and antenna options
      • Secure
        • Enterprise-class security
      • Feature Rich
        • Intelligent Network Services via IOS
    • Cisco Aironet Wireless Bridging Solutions
        • Single 802.11a radio with data rates up to 54 Mbps
        • Single 802.11b radio with data rates up to 11 Mbps
        • 7.5 miles typical point to point range with directional antennas at 54 Mbps
        • 3 miles typical point to point range with directional antennas at 11 Mbps
        • Antenna Alignment feedback via LEDs and RSSI port and statistics via telnet
        • Statistics via telnet
        • Cisco Aironet 1400 Series
        • Cisco Aironet 350 Series
        • QOS, VLANs, and Proxy Mobile IP
        • QOS, VLANs, and Proxy Mobile IP
        • Cisco IOS operating system
        • VxWorks based operating system
        • Inline Power via Power Injector LR
        • Inline and Local Power
        • Outdoor environmental specifications, tested to NEMA 4
        • Indoor industrial environmental specifications, rugged metal case
        • Single 5.8 GHz integrated patch array antenna or antenna connector for remote antennas
        • Two 2.4 GHz antenna connectors for high gain diversity antennas
        • Wireless Bridging with high performance
        • Wireless Bridging at a Lower Total Cost
    • Antennas 2.4 GHz 5 GHz
      • Indoor and Outdoor
      • WLAN and Bridging
      • Outdoor
      • Bridging
    • Cable and Accessories
    • 802.11-Enabled Phones
      • A cordless phone for the workplace
        • Cisco 7920 Wireless VoIP phone
    • Beyond Laptops: Other 802.11-Enabled Devices
      • PDA’s
      • Phones
      • Printers
      • Projectors
      • Tablet PC’s
      • Security Cameras
      • Barcode scanners
      • Custom devices for vertical markets:
        • Healthcare
        • Manufacturing
        • Retail
        • Restaurants
      HP iPAQ 5450 PDA Compaq Tablet PC HHP Barcode Scanner Epson Printer Sharp M25X Projector SpectraLink Phone
    • WLAN Market
    • In Building WLAN
    • Site to Site WLAN
    • WLAN Markets
    • Challenges and Issues
    • Radio Signal Interference
    • Power Consumption
    • Interoperability
    • Wireless LAN Security: Lessons “ War Driving” Hacking into WEP Lessons:
      • Security must be turned on (part of the installation process)
      • Employees will install WLAN equipment on their own (compromises security of your entire network)
      • WEP keys can be easily broken (businesses need better security)
    • Reliability and Connectivity
    • Installation and Site Design Issues—Bridging
    • Installation and Site Design Issues—WLAN
    • Health Issues
    • IEEE 802.11 Standards Activities
      • 802.11a: 5GHz, 54Mbps
      • 802.11b: 2.4GHz, 11Mbps
      • 802.11d: Multiple regulatory domains
      • 802.11e: Quality of Service (QoS)
      • 802.11f: Inter-Access Point Protocol (IAPP)
      • 802.11g: 2.4GHz, 54Mbps
      • 802.11h: Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC)
      • 802.11i: Security
      • 802.11j: Japan 5GHz Channels (4.9-5.1 GHz)
      • 802.11k: Measurement
    • WLAN Speeds & Frequencies 802.11g 2.4 GHz – OFDM/CCK 54 Mbps Proprietary
      • IEEE 802.11a/b Ratified
      802.11a 5 GHz – OFDM 54 Mbps 802.11b 2.4 GHz – CCK 11 Mbps Jan’99 Jan’00 Jan’01 Jan’02 Jan’03 Jan’04
    • Summary
        • Identify characteristics of Cisco Aironet 802.11a products.
        • Identify characteristics of Cisco Aironet 802.11b products.
    • © 2003, Cisco Systems, Inc. All rights reserved.