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Vantage CNM 2.0 User’s Guide
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Appendix H
Wireless LAN and IEEE 802.11
A wireless LAN (WLAN) provides a flexible data communications system that you can use to
access various services (navigating the Internet, E-mail, printer services, etc.) without the use
of a cabled connection. In effect a wireless LAN environment provides you the freedom to
stay connected to the network while roaming around in the coverage area.
Benefits of a Wireless LAN
Wireless LAN offers the following benefits:
It provides you with access to network services in areas otherwise hard or expensive to wire,
such as historical buildings, buildings with asbestos materials and classrooms.
It provides health care workers like doctors and nurses access to a complete patient’s profile
on a handheld or notebook computer upon entering a patient’s room.
It allows flexible workgroups a lower total cost of ownership for workspaces that are
frequently reconfigured.
It allows conference room users access to the network as they move from meeting to meeting,
getting up-to-date access to information and the ability to communicate decisions while “on
the go”.
It provides campus-wide networking mobility, allowing enterprises the roaming capability to
set up easy-to-use wireless networks that cover the entire campus transparently.
IEEE 802.11
The 1997 completion of the IEEE 802.11 standard for wireless LANs (WLANs) was a first
important step in the evolutionary development of wireless networking technologies. The
standard was developed to maximize inter operability between differing brands of wireless
LANs as well as to introduce a variety of performance improvements and benefits.
The IEEE 802.11 specifies three different transmission methods for the PHY, the layer
responsible for transferring data between nodes. Two of the methods use spread spectrum RF
signals, Direct Sequence Spread Spectrum (DSSS) and Frequency-Hopping Spread Spectrum
(FHSS), in the 2.4 to 2.4825 GHz unlicensed ISM (Industrial, Scientific and Medical) band.
The third method is infrared technology, using very high frequencies, just below visible light
in the electromagnetic spectrum to carry data.
Summary of Contents for VANTAGE CNM 2.0 -
Page 30: ...Vantage CNM 2 0 User s Guide 33 Chapter 1 Introducing Vantage ...
Page 40: ...Vantage CNM 2 0 User s Guide 43 Chapter 2 GUI Introduction ...
Page 66: ...Vantage CNM 2 0 User s Guide 69 Chapter 4 Configuration Select Device BB General ...
Page 78: ...Vantage CNM 2 0 User s Guide 81 Chapter 5 Configuration LAN ...
Page 96: ...Vantage CNM 2 0 User s Guide 99 Chapter 7 Configuration DMZ ...
Page 126: ...Vantage CNM 2 0 User s Guide 129 Chapter 8 Configuration WAN ...
Page 140: ...Vantage CNM 2 0 User s Guide 143 Chapter 9 Configuration NAT ...
Page 144: ...Vantage CNM 2 0 User s Guide 147 Chapter 10 Configuration Static Route ...
Page 162: ...Vantage CNM 2 0 User s Guide 165 Chapter 11 Configuration VPN ...
Page 182: ...Vantage CNM 2 0 User s Guide 185 Chapter 12 Configuration Firewall ...
Page 188: ...Vantage CNM 2 0 User s Guide 191 Chapter 13 Configuration Device Log ...
Page 236: ...Vantage CNM 2 0 User s Guide 239 Chapter 18 Other System Screens ...
Page 239: ...Vantage CNM 2 0 User s Guide Chapter 19 Monitor Alarms 242 Figure 132 Monitor Current Alarms ...
Page 242: ...Vantage CNM 2 0 User s Guide 245 Chapter 19 Monitor Alarms ...
Page 248: ...Vantage CNM 2 0 User s Guide 251 Chapter 20 Other Monitor Screens ...
Page 254: ...Vantage CNM 2 0 User s Guide 257 Figure 151 WFTPD Pro Log On ...
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Page 291: ...Vantage CNM 2 0 User s Guide 294 Figure 181 ESS Provides Campus Wide Coverage ...
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