DG-BG4300N User Manual
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Fragment
Threshold
This value should remain at its default setting of 2346. It specifies the maximum size for a
packet before data is fragmented into multiple packets. If you experience a high packet error
rate, you may slightly increases the “Fragment Threshold” value within the value range of
256 to 2346. Setting this value too low may result in poor network performance. Only minor
modifications of this value are recommended.
RTS Threshold
This value should remain at its default setting of 2347. If you encounter inconsistent data
flow, only minor modifications are recommended. If a network packet is smaller than the
preset “RTS threshold” size, the RTS/CTS mechanism will not be enabled. The ADSL
modem (or AP) sends Request to Send (RTS) frames to a particular receiving station and
negotiates the sending of a data frame. After receiving an RTS, the wireless station
responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission.
Beacon
Interval
The Beacon Interval value indicates the frequency interval of the beacon. Enter a value
between 20 and 1024. A beacon is a packet broadcast by the ADSL modem (or AP) to
synchronize the wireless network. The default is 100.
Data Rate
The rate of data transmission should be set depending on the speed of your wireless
network. You should select from a range of transmission speeds, or you can select Auto to
have the ADSL modem (or AP) automatically use the fastest possible data rate and enable
the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed
between the AP and a wireless client. The default setting is Auto.
Preamble Type
The Preamble Type defines the length of the CRC (Cyclic Redundancy Check) block for
communication between the AP and mobile wireless stations. Make sure to select the
appropriate preamble type. Note that high network traffic areas should use the short
preamble type. CRC is a common technique for detecting data transmission errors.
Broadcast
SSID
If this option is enabled, clients can see the wireless network. This feature is intended to
allow clients to dynamically discover and roam between WLANs; if this option is disabled,
the device will hide its SSID. When this is done, the station cannot directly discover its
WLAN and MUST be configured with the SSID. Note that in a home Wi-Fi network, roaming
is largely unnecessary and the SSID broadcast feature serves no useful purpose. You
should disable this feature to improve the security of your WLAN.
Relay Blocking
When Relay Blocking is enabled, wireless clients will not associate with other wireless
clients.
Ethernet
to
Wireless
Blocking
When enabled, traffic between Ethernet and wireless interfaces are not allowed.
DTIM Interval
The DTIM Interval determines the number of AP beacons between each Delivery Traffic
Indication Message (DTIM). This informs clients of the next window for listening to broadcast
and multicast messages. When the AP has buffered broadcast or multicast messages for
associated clients, it sends the next DTIM with a DTIM Interval value. Clients for that AP
hear beacons and awaken to receive the broadcast and multicast messages
WIFI Multicast
to Unicast
For unicast transmissions, 802.11 implements layer2 acknowledgments and
error checking to ensure frame delivery. Multicast traffic, on the other hand, has no link layer
error or loss management in the 802.11 standard.
Aggregation
Frame aggregation is a process of packing multiple MSDUs or MPDUs together to reduce the
overheads and average them over multiple frames, thus increasing the user level data rate.
Short GI
Guard Intervals (GI) are used to ensure that distinct transmissions do not interfere with one
another. Short GI enable = 400ns, disable = 800ns.
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