Appendix B Wireless LANs
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network overhead involved in the RTS (Request To Send)/CTS (Clear to Send)
handshake.
If the RTS/CTS value is greater than the Fragmentation Threshold value (see
next), then the RTS (Request To Send)/CTS (Clear to Send) handshake will never
occur as data frames will be fragmented before they reach RTS/CTS size.
Note: Enabling the RTS Threshold causes redundant network overhead that could
negatively affect the throughput performance instead of providing a remedy.
Fragmentation Threshold
A Fragmentation Threshold is the maximum data fragment size (between 256
and 2432 bytes) that can be sent in the wireless network before the AP will
fragment the packet into smaller data frames.
A large Fragmentation Threshold is recommended for networks not prone to
interference while you should set a smaller threshold for busy networks or
networks that are prone to interference.
If the Fragmentation Threshold value is smaller than the RTS/CTS value (see
previously) you set then the RTS (Request To Send)/CTS (Clear to Send)
handshake will never occur as data frames will be fragmented before they reach
RTS/CTS size.
Preamble Type
Preamble is used to signal that data is coming to the receiver. Short and Long
refer to the length of the synchronization field in a packet.
Short preamble increases performance as less time sending preamble means
more time for sending data. All IEEE 802.11b/g compliant wireless adapters
support long preamble, but not all support short preamble.
Select Long preamble if you are unsure what preamble mode the wireless
adapters support, and to provide more reliable communications in busy wireless
networks.
Select Short preamble if you are sure the wireless adapters support it, and to
provide more efficient communications.
Select Dynamic to have the AP automatically use short preamble when wireless
adapters support it, otherwise the AP uses long preamble.
Содержание NWA-3166
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Страница 15: ...15 PART I Introduction Introduction 17 The Web Configurator 29 Tutorials 33 ...
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Страница 32: ...Chapter 2 The Web Configurator NWA 3166 User s Guide 32 ...
Страница 64: ...Chapter 3 Tutorials NWA 3166 User s Guide 64 ...
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Страница 70: ...Chapter 4 Status Screen NWA 3166 User s Guide 70 ...
Страница 122: ...Chapter 8 Wireless Screen NWA 3166 User s Guide 122 ...
Страница 128: ...Chapter 9 SSID Screen NWA 3166 User s Guide 128 ...
Страница 158: ...Chapter 14 IP Screen NWA 3166 User s Guide 158 ...
Страница 166: ...Chapter 15 Rogue AP Detection NWA 3166 User s Guide 166 ...
Страница 186: ...Chapter 17 Internal RADIUS Server NWA 3166 User s Guide 186 ...
Страница 213: ...Chapter 19 Log Screens NWA 3166 User s Guide 213 ...
Страница 214: ...Chapter 19 Log Screens NWA 3166 User s Guide 214 ...
Страница 235: ...Chapter 20 VLAN NWA 3166 User s Guide 235 ...
Страница 236: ...Chapter 20 VLAN NWA 3166 User s Guide 236 ...
Страница 270: ...Appendix B Wireless LANs NWA 3166 User s Guide 270 ...
Страница 300: ...Appendix D IP Addresses and Subnetting NWA 3166 User s Guide 300 ...
Страница 308: ...Appendix E Text File Based Auto Configuration NWA 3166 User s Guide 308 ...
Страница 314: ...Appendix F How to Access and Use the CLI NWA 3166 User s Guide 314 ...
Страница 326: ...Appendix H Customer Support NWA 3166 User s Guide 326 ...
Страница 332: ...Index NWA 3166 User s Guide 332 ...