CWNA Certified Wireless Network Administrator

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CWNACertified Wireless Network Administrator

• Wireless LAN Infrastructure Device

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Access Points (AP)

• Access Point - A device that allows a wireless
  client a connection point to a wired network.

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Access Points (AP)
Proxim Orinoco AP-600
Cisco Aironet 350
Linksys WAP11
D-Link DWL-5000 AP
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Access Point
Wired Clients
Wired LAN
Access Point
Wireless Clients
Basic Service Area
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Access Point Modes

• Root Mode Access Point that connects wireless
  client stations to a wired LAN.
• Bridge Mode Access Point that operates as a
  wireless link between two wired segments.
• Repeater Mode Access Point that operates as a
  relay between wireless client stations and a Root
  Mode Access Point.

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Root Mode
Wired Clients
Wired LAN
Access Points (Root Mode)
Wireless Clients
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Bridge Mode
Wired Clients
Wired LAN 1
Access Points (Bridge Mode)
(Root)
(Non-Root)
Wired Clients
Wired LAN 2
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Repeater Mode
Wired Clients
Wired LAN
Access Points
(Repeater Mode)
(Root Mode)
Wireless Clients
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Common Options

• Fixed, (Captured) or Detachable Antennas
• Security Capabilities (Traffic Filtering)
• Management and Software Options
• Removable Radio Cards (PCMCIA PC)
• Stepped Power Output
• Varied Power Supply Options
• Packaging Standard or Ruggedize
• Varied wired network connections

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Cisco Aironet 350 Series

• Captured Antenna or Two RP-TNC connectors
  depends on model.
• Support for static and dynamic IEEE 802.11 WEP
  keys of 40 bits and 128 bits
• Simple Network Management Protocol (SNMP)
• Imbedded Radio Unit

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Cisco Aironet 350 Series

• Radio transmit power (1, 5, 20, 30, 50, 100 mW)
• A line power injector, included with the
  product.
• Standard or Rugged Version.
• Auto-sensing 10/100BaseT Ethernet

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Configurations and Management

• User Application/OS Interface
• Command Line Interface, (CLI)
• Menu Interface
• Graphical User Interface, (GUI)
• User Access to the Application/OS
• Local console Serial Port and/or USB
• Remote Telnet - Network
• Web Browser - Network

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Wireless Bridges

• Wireless Bridge provides a link between two
  LAN segments either point-to-point or
  point-to-multipoint.

Point-to-Point
Root
Non-Root
Non-Root
Root
Non-Root
Point-to-Mulitpoint
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Wireless Bridges
Proxim QuickBridge 11
Cisco Aironet 1400
3Com WLAN Bridge
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Wireless Bridge Modes

• Root Mode A bridge that acts as the hub to a
  group of bridges.
• Non-Root Mode A member bridge of a group that
  is not the Root Bridge.
• Access point Mode Allows the bridge to
  function as an Access Point.
• Repeater Mode Allows a bridge to relay traffic
  from one bridge to another.

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Wireless Workgroup Bridges

• Wireless Workgroup Bridge A bridge that links
  a group of LAN devices appearing as a single
  client to a WLAN.

Cisco Aironet 350 Series
3Com Workgroup Bridge
National Datacomm Corp. NWH6210
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Wireless Workgroup Bridge
Wired Hosts
Wired LAN 1
Workgroup Bridge
Access Point
Network Printer
Workgroup Hosts
Wired LAN 2
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Wireless LAN Client Devices

• PCMCIA, Compact Flash Cards, SD Cards
• Ethernet and Serial Converters
• USB Adapters
• PCI and ISA Adapters

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PCMCIA

• PCMCIA, (PC) - Personal Computer Memory Card
  International Association.
• PC Cards come in three types. All PC Cards have
  the same width and length - 54.0 millimeters wide
  and 85.6 millimeters long - but vary in
  thickness
• Type 1 - 3.3 millimeters thick
  Type 2 - 5.0 millimeters thick Type 3 -
  10.5 millimeters thick
• PC 2.0 ? 16-bit PC 2.1 ? 32-bit

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PCMCIA, (PC) Cards
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Compact Flash

• Compact Flash, (CF) - CompactFlash Association,
  CFA

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CF Wireless 802.11b (WiFi)
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Wireless USB Adapters
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PCI and ISA Adapters
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Adapters
SD to USB
SD to PC
CF to PC
USB to Serial
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Ethernet Adapters
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Wireless Configuration
Wireless Utilities
Network Driver Interface Specification (NDIS)
Windows Driver
MFG Driver
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Wireless Residential Gateway

• Wireless Residential Gateway A central hub,
  portal, or base station that links a group of
  clients to another network, such as the Internet.

Internet
Gateway
WAN
LAN Switch
Clients
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Wireless Residential Gateway
Switch Multi-portWAN portAccess PointNAT, PAT,
DHCP, servicesFirewall
Residential Gateway
DSL/CableModem
Clients
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Enterprise Wireless Gateways

• Enterprise Wireless Gateway is a powerful
  device that interfaces between the enterprise
  network and the corporate firewall.
• HTML ? WML
• Authentication, Filtering, and Security
• Traffic Management, QoS
• Mobile Addressing

BlueSecure ControllerBSC 2100
Vernier IS 6500p
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Enterprise Wireless Gateways
Enterprise Server
Enterprise Gateway
Router
Switch
Access Points
Wireless Clients
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Fat and Thin Access Points

• Thin APs are paired with a wireless LAN switch
  or controller to offer additional functionality
  and centralization over Fat APs.
• Fat (Thick or Smart) APs are "fat" because they
  operate autonomously as members of a
  decentralized WLAN.

3Com Wireless LAN Switch WX1200
3Com AP3750 MAP
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Thin Access Points
CorporateNetwork
WirelessController
Switch 1
Switch 2
Switch 3
Access Point
Access Point
Access Point
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Power over Ethernet Devices

• Power over Ethernet, (PoE) is a system to
  delivery DC voltages over CAT-5 Ethernet cabling
  to power network devices. This removes the
  problem of having AC power at all locations where
  network devices are needed. Approved IEEE 802.3af
  for PoE, June 2003.

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PoE Devices

• Injector The Power Sourcing Equipment (PSE) to
  couple DC power onto the CAT-5 Ethernet cable.
• PoE compatible device - Powered Device (PD) that
  can directly accept the DC power from the CAT-5
  Ethernet cable.

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PoE Devices

• Tap/Splitter A device that picks-off the DC
  power and routes it to a non-compatible PoE
  device.
• Passive Tap a device that picks-off the power
  without modifying or regulating the PoE voltage,
  (48 vdc).
• Active or Regulated Tap a device that
  picks-off the power and reduces and or regulates
  the PoE voltage, (5, 6, or 12 vdc).

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PoE System
CAT-5e Cable
Access Point
PoE Injector
AC Outlet
Warehouse
Stuff
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Installing PoE Devices
Active/PSE Switch
PD Access Point
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DC Power
CAT-5e Ethernet
PD Access Point
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Switch
AC Power
DC Power
CAT-5e Ethernet
PSE Injector
Access Point
DCPower
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Switch
AC Power
DC Power
CAT-5e Ethernet
PSE Injector
Tap/Splitter
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PoE Coupler
Injector
Tap
HyperLink BT-CAT5-P1 Single-Port CAT-5
Injector/Tap
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Installation of Access points

• Mounting Options
• Tabletop, solid surface wall or ceiling,
  junction box, suspended T-bar ceiling,
  mast/tower, and temporary.
• Status indicators, power, data-line, and
  antenna/s locations.

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Sample Mountings
B
A
C
D
E