FWL_v11_Mod01.ppt
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Transcript of FWL_v11_Mod01.ppt
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-1111© 2003, Cisco Systems, Inc. All rights reserved.
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-3
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.
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-4
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.
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-5
Key terms
• WLAN
• Bridging
• Access Point
• Bridge
• Antenna
• Wi-Fi™
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-6
Major Factors
There are four major factors to consider before implementing a wireless network:
• High availability
• Scalability
• Manageability
• Open architecture
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-7
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-8
Wireless LANs Are Taking Off
($ Billions)
Source: Forward Concepts, 2003
Future Growth Due To:
StandardsHigh Bandwidth NeedsLow CostEmbedded in LaptopsVariety of DevicesVoice + DataMultiple ApplicationsSecurity Issues SolvedEase of DeploymentNetwork Mgmt. ToolsEnterprise Adoption
Worldwide WLAN Market*includes embedded clients, add-on client cards, & infrastructure equipment for both the business and consumer segments
CAGR = 43%
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-9
“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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-13
2.5 GHz Service2.5 GHz Service
Wireless Data Networks
LocalLocal WideWideCoverage AreaCoverage AreaCoverage AreaCoverage Area
SatelliteSatellite
Dat
a R
ates
Dat
a R
ates
Dat
a R
ates
Dat
a R
ates
9.6 Kbps9.6 Kbps
19.6 Kbps19.6 Kbps
56 Kbps56 Kbps
1 Mbps1 Mbps
2 Mbps2 Mbps
10 Mbps10 Mbps
50 Mbps50 Mbps
Broadband PCSBroadband PCS
Spread Spread Spectrum Spectrum Wireless Wireless
LANsLANs
Spread Spread Spectrum Spectrum Wireless Wireless
LANsLANsInfrared Infrared Wireless Wireless
LANsLANs
Narrow Band Narrow Band Wireless LANsWireless LANs
Circuit and Packet DataCircuit and Packet DataCellular, CDPD, Mobitex, DataTacCellular, CDPD, Mobitex, DataTac
Narrowband PCSNarrowband PCSNarrowband PCSNarrowband PCS
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-14
Wireless Technologies
PAN(Personal Area
Network)
PAN(Personal Area
Network)
LAN(Local Area Network)
LAN(Local Area Network)
WAN(Wide Area Network)
WAN(Wide Area Network)
MAN(Metropolitan Area Network)
MAN(Metropolitan Area Network)
PANPAN LANLAN MANMAN WANWAN
BluetoothBluetooth
Peer-to-PeerDevice-to-Device
Peer-to-PeerDevice-to-Device
ShortShort
<1 Mbps<1 Mbps
802.11a, 11b, 11gHiperLAN2
802.11a, 11b, 11gHiperLAN2
Enterprise Networks
Enterprise Networks
MediumMedium
2–54+ Mbps2–54+ Mbps
802.11MMDS, LMDS
802.11MMDS, LMDS
Fixed, LastMile AccessFixed, LastMile Access
Medium–LongMedium–Long
22+ Mbps22+ Mbps
GSM, GPRS,CDMA, 2.5–3GGSM, GPRS,
CDMA, 2.5–3G
PDAs, MobilePhones, Cellular
Access
PDAs, MobilePhones, Cellular
Access
LongLong
10–384 Kbps10–384 Kbps
StandardsStandards
SpeedSpeed
RangeRange
ApplicationsApplications
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-19
860 Kbps
900 MHz
1 and 2 Mbps
2.4 GHz
Proprietary
WLAN Evolution: 2000–Present
Warehousing
Retail
Healthcare
EducationBusinessesHome
802.11 Ratified
802.11a,b Ratified
802.11g
Drafted1986 1988 1990 1992 1994 1996 1998 2000 2002
1 and 2 Mbps
2.4 GHz
11 Mbps 54 Mbps
Standards-based
5 GHzRadio
Network
Speed
IEEE 802.11Begins Drafting
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-20
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-22
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)
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-23
WLAN Devices
Antenna
•2.4GHz
•5 GHz Antennas
Clients
• 350 Series (802.11b)
• 5 GHz client adapter (802.11a)
• Workgroup bridge (802.11b)
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-24
Cable, Accessories, Wireless IP Phone
Cable and Accessories
• Low Loss Cable
• Antenna Mounts
• Lightening Arrestor
• Wireless IP Phone
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-25
Cisco Aironet 802.11b Client Adapters
2.4 GHz• 802.11b
• 11 Mbps
Include• PC Card
• PCI Card
• LMC Card
• Mini PCI
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-26
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)
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-27
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-28
1200 Series Access Point
Dual radio designField 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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-29
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-30
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-31
Cisco Aironet WLAN Solutions for the Enterprise
Cisco Aironet 1100 Series Cisco Aironet 1200 Series Intelligent Enterprise Services at a Lower Total Cost
Outstanding Enterprise Performance and Greatest Flexibility
Single 802.11b radio (upgradable to 802.11g with Advanced Encryption Standard (AES))
Dual-mode 802.11a and 802.11b support (upgradable to 802.11g with Advanced Encryption Standard (AES))
Integrated diversity dipole antennas for simplified deployment
Two 2.4 GHz antenna connectors for high gain diversity antennas; integrated 5 GHz antennas
Indoor environmental specifications, durable plastic case
Industrial environmental specifications, rugged metal case
Extra memory and system capacity for future releases
Extra memory and system capacity for future releases
Inline and Local Power Inline and Local Power
Cisco IOS-based operating system Cisco IOS operating system
QOS, VLANs, and Proxy Mobile IP QOS, VLANs, and Proxy Mobile IP
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-32
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-33
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-34
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-35
Cisco Aironet Wireless Bridging Solutions
Cisco Aironet 350 Series Cisco Aironet 1400 Series
Wireless Bridging at a Lower Total Cost
Wireless Bridging with high performance
Single 802.11b radio with data rates up to 11 Mbps
Single 802.11a radio with data rates up to 54 Mbps
3 miles typical point to point range with directional antennas at 11 Mbps
7.5 miles typical point to point range with directional antennas at 54 Mbps
Two 2.4 GHz antenna connectors for high gain diversity antennas
Single 5.8 GHz integrated patch array antenna or antenna connector for remote antennas
Indoor industrial environmental specifications, rugged metal case
Outdoor environmental specifications, tested to NEMA 4
Inline and Local Power Inline Power via Power Injector LR
VxWorks based operating system Cisco IOS operating system
QOS, VLANs, and Proxy Mobile IP QOS, VLANs, and Proxy Mobile IP
Statistics via telnet Antenna Alignment feedback via LEDs and RSSI port and statistics via telnet
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-36
Antennas
2.4 GHz 5 GHz
•Indoor and Outdoor
•WLAN and Bridging
• Outdoor
• Bridging
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-38
802.11-Enabled Phones
A cordless phone for the workplace
•Cisco 7920 Wireless VoIP phone
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-39
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-48
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)
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-50
Installation and Site Design Issues—Bridging
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-51
Installation and Site Design Issues—WLAN
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-53
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
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-54
WLAN Speeds & Frequencies
802.11g2.4 GHz – OFDM/CCK
54 Mbps
Proprietary IEEE 802.11a/b Ratified
802.11a5 GHz – OFDM
54 Mbps
802.11b2.4 GHz – CCK
11 Mbps
Jan’99 Jan’00 Jan’01 Jan’02 Jan’03 Jan’04
© 2003, Cisco Systems, Inc. All rights reserved. FWL 1.0—1-55
Summary
• Identify characteristics of Cisco Aironet 802.11a products.
• Identify characteristics of Cisco Aironet 802.11b products.