Cisco Cisco Aironet Wireless LAN Client Spécifications Page 130
- Page / 142
- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Glossary
GL-2
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Linux
OL-1367-02
CSMA
Carrier sense multiple access. A wireless LAN media access method specified by the IEEE 802.11
specification.
Cyclic Redundancy
Check (CRC)
A method of checking for errors in a received packet.
D
Data Rates
The range of data transmission rates supported by a device. Data rates are measured in megabits per
second (Mbps).
dBi
A ratio of decibels to an isotropic antenna that is commonly used to measure antenna gain. The greater
the dBi value, the higher the gain and the more acute the angle of coverage.
DHCP
Dynamic host configuration protocol. A protocol available with many operating systems that
automatically issues IP addresses within a specified range to devices on the network. The device retains
the assigned address for a specific administrator-defined period.
Dipole
A type of low-gain (2.2-dBi) antenna consisting of two (often internal) elements.
DSSS
Direct-sequence spread spectrum. A type of spread spectrum radio transmission that spreads its signal
continuously over a wide frequency band.
Duplicate Packets
Packets that were received twice because an acknowledgement got lost and the sender retransmitted the
packet.
E
EAP
Extensible Authentication Protocol. EAP is the protocol for the optional IEEE 802.1X wireless LAN
security feature. An access point that supports 802.1X and EAP acts as the interface between a wireless
client and an authentication server, such as a Remote Authentication Dial-In User Service (RADIUS) server,
to which the access point communicates over the wired network.
Ethernet
The most widely used wired local area network. Ethernet uses carrier sense multiple access (CSMA)
to allow computers to share a network and operates at 10, 100, or 1000 megabits per second (Mbps),
depending on the physical layer used.
F
File Server
A repository for files so that a local area network can share files, mail, and programs.
Firmware
Software that is programmed on a memory chip and kept in a computer’s semi-permanent memory.
Fragmentation
Threshold
The size at which packets will be fragmented and transmitted a piece at a time instead of all at once.
The setting must be within the range of 64 to 2312 bytes.
- Guide for Linux 1
- CONTENTS 3
- Contents 4
- 5 Advanced Configuration 5-1 5
- 6 Diagnostics 6-1 5
- 7 Routine Procedures 7-1 5
- 8 Troubleshooting 8-1 6
- Japanese Translation D-7 7
- English Translation D-7 7
- Audience 10
- Organization 10
- Conventions 11
- Attention 12
- Avvertenza 12
- Advarsel 12
- Related Publications 13
- Obtaining Documentation 13
- Ordering Documentation 14
- Documentation Feedback 14
- Cisco.com 14
- Technical Assistance Center 15
- Cisco TAC Escalation Center 16
- Overview 17
- Terminology 18
- Parts of the Client Adapter 19
- Chapter 1 Overview 20
- Ad Hoc Wireless LAN 21
- Site Survey 22
- Preparing for Installation 25
- Safety Information 26
- Unpacking the Client Adapter 27
- System Requirements 27
- Site Requirements 28
- PCMCIA Installation 32
- Enter (Figure 3-3) 33
- Figure 3-7 Make All Screen 37
- Option 1 for Red Hat Systems 38
- Option 2 for Red Hat Systems 39
- Verifying Installation 41
- Inserting a PC Card 42
- Additional Procedures 44
- Opening the Client Utilities 46
- Selecting the Radio 47
- Enabling LEAP 52
- Using the Bcard Utility 53
- Finishing the Installation 54
- Enabling Security Features 55
- Server-Based Authentication 56
- Getting Started 56
- Changing the Password 56
- Entering a New WEP Key 57
- Selecting an Existing WEP Key 59
- Enabling WEP 59
- Message Integrity Check (MIC) 60
- Advanced Configuration 63
- Setting Enterprise Parameters 65
- Table 5-2 System Parameters 66
- Network Type Description 67
- Authentication Description 69
- Setting RF Network Parameters 71
- Data Rate Description 72
- Diagnostics 83
- Chapter 6 Diagnostics 85
- Receive Statistics 90
- Transmit Statistics 91
- Routine Procedures 93
- Ascertaining the ACU Version 94
- Selecting a Help Browser 95
- Loading New Firmware 95
- Uninstalling Manually 97
- Removing a PC Card 99
- Removing a PCI Client Adapter 99
- OL-1376-02 100
- Removing the Client Adapter 100
- Troubleshooting 101
- Using the Indicator LEDs 102
- Getting Help 104
- (Figure 8-3) 105
- Technical Specifications 107
- Power output 109
- Receiver sensitivity 109
- APPENDIX 113
- Channel Sets 114
- Translated Safety Warnings 117
- Warning for Laptop Users 119
- ¡Advertencia! 120
- Varning! 120
- Information 121
- Tested To Comply 122
- With FCC Standards 122
- FOR HOME OR OFFICE USE 122
- Canadian Compliance Statement 123
- Liechtenstein 124
- Japanese Translation 127
- English Translation 127
- GLOSSARY 129
- Glossary 130
- OL-1367-02 130
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