AirLive WL-5470POE - Manual (Page 55)

WL-5470 POE User’s Manual 52
Beacon Interval: Beacon Interval is the amount of time between beacon transmissions. Before a station
enters power save mode, the station needs the beacon interval to know when to wake up to receive the
beacon (and learn whether there are buffered frames at the access point).
Data Rate: By default, the unit adaptively selects the highest possible rate for transmission. Select the basic
rates to be used among the following options: Auto, 1, 2, 5.5, 11or 54 Mbps. For most networks the default
setting is Auto which is the best choice. When Auto is enabled the transmission rate will select the optimal rate.
If obstacles or interference are present, the system will automatically fall back to a lower rate.
Preamble Type: A preamble is a signal used in wireless environment to synchronize the transmitting timing
including Synchronization and Start frame delimiter. In a "noisy" network environment, the Preamble Type
should be set to Long Preamble. The Short Preamble is intended for applications where minimum overhead
and maximum performance is desired. If in a "noisy" network environment, the performance will be
decreased.
Broadcast SSID: Select enabled to allow all the wireless stations to detect the SSID of this Access Point.
IAPP: IAPP (Inter Access Point Protocol) is designed for the enforcement of unique association throughout a
ESS (Extended Service Set) and a secure exchange of station’s security context between current access
point (AP) and new AP during handoff period.
802.11g Protection: The 802.11g standard includes a protection mechanism to ensure mixed 802.11b and
802.11g operation. If there is no such kind of mechanism exists, the two kinds of standards may mutually
interfere and decrease network’s performance.
Tx Power Level: For countries that impose limit on WLAN output power, it might be necessary to reduce TX
(transmit) power. There are 7 TX Power Levels to choose from — select a level to make sure that the output
power measured at the antenna end will not exceed the legal limit in your country.
Enable WatchDog: Check and enable this watch dog function.
Watch Interval: Setup the interval time for watch dog function between 1 to 60 mins.
Watch Host: Enter the watch dog host ip address.
Ack timeout: When a packet is sent out from one wireless station to the other, it will waits for an
Acknowledgement frame from the remote station. If the ACK is NOT received within that timeout period then
the packet will be re-transmitted resulting in reduced throughput. If the ACK setting is too high then throughput
will be lost due to waiting for the ACK Window to timeout on lost packets. By having the ability to adjust the
ACK setting we can effectively optimize the throughput over long distance links. This is especially true for
802.11a and 802.11g networks
You can set as default for auto adjustment.