Appendix D Wireless LANs
AMG1202-T10A User’s Guide
269
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 802.11 compliant wireless adapters support long preamble, but not all support short
preamble.
Use long preamble if you are unsure what preamble mode other wireless devices on the network
support, and to provide more reliable communications in busy wireless networks.
Use short preamble if you are sure all wireless devices on the network support it, and to provide
more efficient communications.
Use the dynamic setting to automatically use short preamble when all wireless devices on the
network support it, otherwise the ZyXEL Device uses long preamble.
Note: The wireless devices MUST
use the same preamble mode in order to communicate.
IEEE 802.11g Wireless LAN
IEEE 802.11g is fully compatible with the IEEE 802.11b standard. This means an IEEE 802.11b
adapter can interface directly with an IEEE 802.11g access point (and vice versa) at 11 Mbps or
lower depending on range. IEEE 802.11g has several intermediate rate steps between the
maximum and minimum data rates. The IEEE 802.11g data rate and modulation are as follows:
Wireless Security Overview
Wireless security is vital to your network to protect wireless communication between wireless
clients, access points and the wired network.
Wireless security methods available on the ZyXEL Device are data encryption, wireless client
authentication, restricting access by device MAC address and hiding the ZyXEL Device identity.
Table 109
IEEE 802.11g
DATA RATE (MBPS)
MODULATION
1
DBPSK (Differential Binary Phase Shift Keyed)
2
DQPSK (Differential Quadrature Phase Shift Keying)
5.5 / 11
CCK (Complementary Code Keying)
6/9/12/18/24/36/48/
54
OFDM (Orthogonal Frequency Division Multiplexing)
Содержание AMG1202-T10A
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Страница 10: ...Contents Overview AMG1202 T10A User s Guide 10 ...
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Страница 26: ...Chapter 1 Introduction AMG1202 T10A User s Guide 26 ...
Страница 32: ...Chapter 2 The Web Configurator AMG1202 T10A User s Guide 32 ...
Страница 36: ...Chapter 3 Status Screens AMG1202 T10A User s Guide 36 ...
Страница 53: ...53 PART II Technical Reference ...
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Страница 84: ...Chapter 6 WAN Setup AMG1202 T10A User s Guide 84 ...
Страница 96: ...Chapter 7 LAN Setup AMG1202 T10A User s Guide 96 ...
Страница 126: ...Chapter 8 Wireless LAN AMG1202 T10A User s Guide 126 ...
Страница 142: ...Chapter 10 Firewall AMG1202 T10A User s Guide 142 ...
Страница 148: ...Chapter 11 Filters AMG1202 T10A User s Guide 148 ...
Страница 152: ...Chapter 12 Static Route AMG1202 T10A User s Guide 152 ...
Страница 158: ...Chapter 13 802 1Q 1P AMG1202 T10A User s Guide 158 ...
Страница 166: ...Chapter 14 Quality of Service QoS AMG1202 T10A User s Guide 166 ...
Страница 202: ...Chapter 19 Logs AMG1202 T10A User s Guide 202 ...
Страница 223: ...Chapter 23 Product Specifications AMG1202 T10A User s Guide 223 ...
Страница 224: ...Chapter 23 Product Specifications AMG1202 T10A User s Guide 224 ...
Страница 264: ...Appendix C Pop up Windows JavaScripts and Java Permissions AMG1202 T10A User s Guide 264 ...
Страница 278: ...Appendix D Wireless LANs AMG1202 T10A User s Guide 278 ...
Страница 286: ...Appendix F Legal Information AMG1202 T10A User s Guide 286 ...
Страница 294: ...Index AMG1202 T10A User s Guide 294 ...
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