Advanced Settings - TRENDnet TEW-823DRU User Manual

TRENDnet User's Guide

Advanced Settings

Advanced > Wireless (2.4GHz or 5GHz) > Advanced
These settings are advanced options that can be configured to change advanced wireless
broadcast specifications. It is recommended that these settings remain set to their default
values unless you are knowledgeable about the effects of changing these values. Changing
these settings incorrectly can degrade performance.
1
Log into your router management page (refer to
2
Click on Advanced > Wireless (2.4GHz or 5GHz) > Advanced.
3
In Advanced Wireless section, configure the following parameters:
ͫ Beacon Period: A beacon is a management frame used in wireless networks that
transmitted periodically to announce the presence and provide information on the
router's wireless network. The interval is the amount time between each beacon
transmission.

Default Value: 100 milliseconds (range: 100-1000)
ͫ DTIM: A DTIM is a countdown informing clients of the next window for listening to
broadcast and multicast messages. When the wireless router has buffered broadcast
or multicast messages for associated clients, it sends the next DTIM with a DTIM
Interval value. Wireless clients detect the beacons and awaken to receive the
broadcast and multicast messages. The default value is 1. Valid settings are between
1 and 255.
ͫ Fragment Threshold: Wireless frames can be divided into smaller units (fragments)
to improve performance in the presence of RF interference and at the limits of RF
coverage. Fragmentation will occur when frame size in bytes is greater than the
Fragmentation Threshold. This setting should remain at its default value of 2346
bytes. Setting the Fragmentation value too low may result in poor performance.
ͫ RTS Threshold: The Request To Send (RTS) function is part of the networking protocol.
A wireless device that needs to send data will send a RTS before sending the data in
question. The destination wireless device will send a response called Clear to Send
(CTS). The RTS Threshold defines the smallest data packet size allowed to initiate the
RTS/CTS function.

Default Value: 2347 (range: 1-2347).
ͫ TX Power: This setting allows you to adjust the wireless transmit power to a lower
setting. In busy wireless environments, lowering the transmit power may improve
better performance and connectivity and decrease interference with neighbouring
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"Log in to Management Page" on page
wireless networks.
ͫ Short Preamble: Using a short preamble can potentially increase throughput as the
transfer time is 96 microseconds versus the more commonly used long preamble
192 microseconds. However, using a short preamble is not supported using 802.11b
legacy devices, in some cases cause wireless interoperability issues, and increase
the error rate in some installations. The preamble is the information sent from the
wireless transmitter to the receiver indicating when data is incoming.
8).
4
In HT Physical Mode section, configure the following parameters:
ͫ 20/40 Coexistence (2.4GHz only): 20/40MHz Coexistence allows for the auto-fallback
from 40MHz to 20MHz channel width operation when neighbouring 802.11 wireless
networks are detected.
ͫ Guard Interval: Using a short (400ns) guard interval can increase throughput.
However, it can also increase error rate in some installations, due to increased
sensitivity to radio-frequency reflections.
ͫ MCS: Allows you to lock down the wireless transmission rate.
ͫ Extension channel: Allows you to assign either the upper or lower extension channels
to use for channel bonding when establishing connectivity at the higher channel
widths 40MHz and 80MHz.
ͫ A-MPDU: Using Aggregate Multiple Protocol Data Unit will allow the all frames
transmitted to be aggregated into larger size A-MPDU formatted frames before
sending and receiving potentially increasing the overall throughput.
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