Quiz

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Quiz
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Class 2

• Questions about reading?

Lecture
Netgear NIC Install
NetStumbler Lab
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How was your long weekend?

• I didnt get an email from any one.
• Some got returned to me. (undeliverable)

Your dog ate it wont work!!!
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Linux RedHat

• If you are a Linux wizard see me at the Break.
• Ill make it worth your while!!!

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• Wireless Why Expectations

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Why Wireless

• Generally 3 types
• LAN (Small office or Home)
• SOHO
• Campus ( Also known as a Hotspot)
• MAN (Mainly used by ISPs)
• All of these are Point to Multi Point
• Lesser Used
• Bridging
• Point to Point
• This is very cost effective.
• PAN

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LAN or SOHO
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HOTSPOT
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MAN
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Questions to Ask before Deployment

• Do you need wireless technology?

Is the site wireless friendly?
Can you effectively use wireless?
Who will design, install, and maintain your
wireless system?
Can you afford wireless?
What kind of data will be passed?
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NEED

• Can you run wires?
• Wireless does involve some wires
• Power
• Is there a plug near by?
• Antenna cable?
• Inducted Power (Cisco)
• Power over CAT5
• A lot more wires than you might think!!

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Cisco Power Injector for Aironet 350 Access Point
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Need cont.
Wireless Administrator

• Is there demand for it?
• Is It cost effective?
• Will it create more work for the
  administrator?!!!
• Can users be educated on its proper use?
• Old dog new tricks
• Make sure you have support from higher ups

New User
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Friendly Site

• You must do a site survey!!!

• You can do a basic survey.
• NetStumbler
• Interference
• Microwave
• Portable Phones
• Aesthetics
• Set up and Test
• ???? What do I mean?

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Friendly Site cont.

• Radio waves will reflect off of metal surfaces,
  but not bend around corners.
• Know the makeup of the building you are
  deploying.
• Physical Security
• Wireless can be picked up no matter how you try
  to hide it. Its in the AIR

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COST

• Fixed Cost vs. Monthly Cost
• Lets Figure it out for a Point to Point
  connection.
• Wireless vs. Wired

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• Basic Networking
• Topologies

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Networking 101

• AdHoc
• LAN
• Cable/DSL Gateway
• Bridge
• These are the most popular.

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Key Terms

• NIC
• AP
• IP Address
• DHCP
• ISP IP Address
• TCP/IP
• DNS
• 2.4 Ghz

• Antenna
• Routable IP Address
• Non-Routable IP Address
• Default Gateway
• Sub Net Mask

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802.11 Components

• Wireless Medium
• The RF used in transmission
• Distribution System
• The backbone of the wireless network which
  permits data to be transferred properly.
• Access Point
• Bridge wireless frames to wired networks which
  permits data to be transferred properly
• Wireless Station
• System with wireless NIC

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PAN

• Connectivity for Personal Operating Space (POS)
• POS defined as the 10 meters surrounding an
  individual

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PAN Types

• Infrared requires line of site, low speed,
  effective and readily available
• Bluetooth affective up to 30 feet with speeds
  up to 700Kbps, uses 2.4Ghz range
• 802.15 IEEE working group on PANs, 2 task forces
  concentrating on Bluetooth protocol
  specifications and interpretability with 802.11
  standards

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PAN
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Ad-Hoc

• Peer-to-Peer network
• Each wireless station communicates directly to
  other clients
• Does not require an access point
• Typically is a standalone wireless network no
  bridging / routing

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Ad - Hoc
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Infrastructure BSS

• Connects WLAN to wired network
• Requires an Access Point
• Each wireless station uses the access point to
  communicate

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Infrastructure BSS
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Infrastructure ESS

• Uses multiple APs to increase coverage areas
• Allows mobility from AP to AP
• All APs must be connected to the same
  distribution center

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Infrastructure ESS
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Lab

• Netgear USB Wireless NIC Install
• NetStumbler

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Quiz

• Well Write it!!!
• What do you want to know about Chapter 3 or Lab

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Questions
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Questions cont.
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Home Work

• Outline Chapter 4
• One page bullets.
• Typed double spaced.
• Write 5 questions on Ch 4.
• These are things you dont understand yet.
• Send me an email from My Site