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Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Linux
OL-1376-02
Chapter 5 Advanced Configuration
Overview
Click OK at the bottom of the Advanced (Ad Hoc) screen to save any changes.
RTS Threshold Specifies the size of the data packet that the low-level RF protocol
issues to a request-to-send (RTS) packet.
Setting this parameter to a small value causes RTS packets to be sent
more often. When this occurs, more of the available bandwidth is
consumed and the throughput of other network packets is reduced, but
the system is able to recover faster from interference or collisions,
which can be caused from a high multipath environment characterized
by obstructions or metallic surfaces.
Range: 0 to 2312
Default: 2312
Note Refer to the IEEE 802.11 standard for more information on the
RTS/CTS mechanism.
RTS Retry Limit Specifies the number of times the client adapter resends a
request-to-send (RTS) packet if it does not receive a clear-to-send
(CTS) packet from the previously sent RTS packet.
Setting this parameter to a large value decreases the available
bandwidth whenever interference is encountered but makes the system
more immune to interference and collisions, which can be caused
from a high multipath environment characterized by obstructions or
metallic surfaces.
Range: 1 to 128
Default: 16
Note Refer to the IEEE 802.11 standard for more information on the
RTS/CTS mechanism.
Wake Duration (Kmus) Specifies the amount of time following a beacon that the client adapter
stays awake to receive announcement traffic indication message
(ATIM) packets, which are sent to the adapter to keep it awake until
the next beacon.
Range: 5 to 60 Kmus
Default: 5 Kmus
Note Kmus is a unit of measurement in software terms. K = 1024,
mu = 10
-6
, and s = seconds, so Kmus = .001024 seconds, 1.024
milliseconds, or 1024 microseconds.
Beacon Period (Kmus) Specifies the duration between beacon packets, which are used to help
clients find each other in ad hoc mode.
Range: 20 to 976 Kmus
Default: 100 Kmus
Table 5-7 Advanced (Ad Hoc) Parameters (continued)
Parameter Description
- 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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