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AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 35
RouterOS v3 Configuration and User Guide
ack-timeout
range
5GHz
5GHz-turbo
2.4GHz-G
30km 249 137 368
35km 298 168 320
40km 350 190 375
45km 405 - -
These are not the precise values. Depending on hardware used and many other factors they may vary
up to +/- 15 microseconds.
You can also use dynamic ack-timeout value - the router will determine ack-timeout setting
automatically by sending periodically packets with a different ack-timeout. Ack-timeout values by which
ACK frame was received are saved and used later to determine the real ack-timeout.
The Nstreme protocol may be operated in three modes:
• Point-to-Point mode - controlled point-to-point mode with one radio on each side
• Dual radio Point-to-Point mode (Nstreme2) - the protocol will use two radios on both sides
simultaneously (one for transmitting data and one for receiving), allowing superfast point-to-point
connection
• Point-to-Multipoint - controlled point-to-multipoint mode with client polling (like AP-controlled
TokenRing)
•
4.3.2 Wireless Interface Configuration
Submenu level: /interface wireless
Description
In this section we will discuss the most important part of the configuration.
Property Description
ack-timeout (integer | dynamic | indoors) - acknowledgement code timeout (transmission acceptance
timeout) in microseconds for acknowledgement messages. Can be one of these:
dynamic - ack-timeout is chosen automatically
indoors - standard constant for indoor usage
adaptive-noise-immunity (yes | no; default: yes) - adjust various receiver parameters dynamically to
minimize interference and noise effect on the signal quality.
allow-sharedkey (yes | no; default: no) - allow WEP Shared Key cilents to connect. Note that no
authentication is done for these clients (WEP Shared keys are not compared to anything) - they are just
accepted at once (if access list allows that)
antenna-gain (integer; default: 0) - antenna gain in dBi. This parameter will be used to calculate whether
your system meets regulatory domain's requirements in your country
antenna-mode (ant-a | ant-b | rxa-txb | txa-rxb; default: ant-a) - which antenna to use for
transmit/receive data:
ant-a - use only antenna a
ant-b - use only antenna b
rxa-txb - use antenna a for receiving packets, use antenna b for transmitting packets
txa-rxb - use antenna a for transmitting packets, antenna b for receiving packets
area (text; default: "") - string value that is used to describe an Access Point. Connect List on the
Client's side comparing this string value with area-prefix string value makes decision whether allow a
Client connect to the AP. If area-prefix match the entire area string or only the beginning of it the
Client is allowed to connect to the AP
arp (disabled | enabled | proxy-arp | reply-only; default: enabled) - Address Resolution Protocol setting