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DG-BR4015N User Manual
46
Network Name (SSID)
When you are browsing for available wireless networks, this
is the name that will appear in the list (unless Visibility Status
is set to Hidden, see below). This name is also referred to as
the SSID.
Multiple SSID (1~7)
To add additional wireless Network Names simply add the
name to the Multiple SSID field and click on apply at the
bottom of the page.
Broadcast Network
Name (SSID)
SSID broadcast can be disabled.
AP Isolation
If enabled, will isolate communication between the clients
connected to router wirelessly.
MBSSID Isolation
If enabled, will isolate communication between the clients
from different SSID.
BSSID
MAC Address of AP
Frequency (Channel)
Radio Channel that wireless AP/Router uses to communicate
with wireless clients.
HT Physical Mode description
Operating Mode
°
Mixed mode: Provides backward compatibility with
IEEE 802.11n/g/b devices.
°
Green Field: Used for pure network of 802.11n access
point and clients, taking full advantage of high-
throughput capabilities of MIMO architecture.
Channel Bandwidth
20 MHz: Allows only single channel operation (20MHz).
20/40 MHz: Allows both single channel operations.
Guard Interval
The guard interval is the period in nanoseconds that the
Gateway listens between packets.
MCS(Modulation
Coding Scheme):
The Modulation and Coding Scheme(MCS) is a value that
determines the modulation, coding and number of spatial
channels. ( Options: value [range] = 0~7 (1 Tx Stream), 8~15
(2 Tx Stream), 32 and auto (33). Default is auto.
Reverse Direction Grant
When enabled Reverse Direction Grant, the wireless
AP/Router can reduce the transmitted data packet collision by
using the reverse direction protocol. The RDG improves
transmission performance and scalability in a wireless.
Aggregation MSDU
This option enables MAC Service Data Unit (MSDU)
aggregation. Default is disable.
Auto Block ACK
Select to block ACK (Acknowledge Number) or not during
data transferring.
Decline BA Request
Select to reject peer BA-Request or not
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47
Other
HT TxStream
HT means High Throughput. The number of HT TxStream
means how many antennas will transmit data
simultaneously.
HT RxStream
The number of HT RxStream means how many antennas
will receive data simultaneously.
When you finish with all settings, please click ‘
Apply
’ button to continue with other
setup procedures.
2-7-2 Advance
You can configure wireless using advance feature to fine tune the wireless network.
Please click ‘
Advance
’ menu on the left of web management interface, under the
‘
Wireless
’ tab and the following screen will be displayed on your web browser.
Here are the descriptions of every setup item.
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48
Parameter
Description
BG Protection
Mode
This mode is a protection mechanism that prevents collisions among 802.11b/g
modes. Below are the choices.
Auto
BG protection mode goes ON or OFF automatically as needed.
°
ON:
BG protection mode is always ON.
°
OFF:
BG protection mode is always OFF.
Beacons
Beacons are packets sent by a wireless router to synchronize wireless devices.
Specify a Beacon Period value between 20 and 1000. The default value is set to
100 milliseconds
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
When an excessive number of wireless packet collisions are occurring, wireless
performance can be improved by using the RTS/CTS (Request to Send/Clear to
Send) handshake protocol. The wireless transmitter will begin to send RTS
frames (and wait for CTS) when data frame size in bytes is greater than the RTS
Threshold. This setting should remain at its default value of 2346 bytes.
Tx Power
Adjusts the power of radio signals transmitted from the AP. The higher the
transmission power, the farther the transmission range. You also have to ensure
that high-power signals do not interfere with the operation of other radio devices
in the service area.
Short Preamble
Enables the length of the signal preamble that is used at the start of a
transmission.
Short Slot
Sets the basic unit of time the wireless AP/Router uses for calculating waiting
times before data is transmitted. Enabling a short time slot can increase data
throughput on the wireless AP/Router, but requires that all clients can support a
short time slot.
Tx Burst
Allows the wireless Router to deliver better throughput in the same period and
environment in order to increase speed.
Pkt_Aggregate
Increase efficiency by aggregating multiple packets of application data into a
single transmission frame. In this way, 802.11n networks can send multiple data
packets with the fixed overhead cost of just a single frame.
WMM
Here you can configure WMM parameters.
When you finish with all settings, please click ‘
Apply
’ button to continue with other
setup procedures.
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49
2-7-3 Wireless Security
It’s very important to set wireless security settings properly
.
If you don’t, hackers and
malicious users can reach your network and valuable data without your consent and this
will cause serious security problem.
To set wireless security settings, Please click ‘
Wireless Security
’ menu on the left of
web management interface, under the ‘
Wireless
’ tab and then follow the instructions
mentioned below to set wireless security settings:
Wireless Security if selected Disable
When you select this mode, data encryption is disabled, and every wireless device in
proximity will be able to connect to your wireless router if no other security measure is
enabled (like Access Control or disable SSID broadcast).
Only use this option when you really want to allow everyone to use your wireless
router, and you don’t care if there’s someone reading the data you transfer over
network without your consent.
A. WEP
When you select this mode, the wireless router will use WEP encryption, and the
following setup menu will be shown on your web browser.
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50
Here are descriptions of every setup item:
Parameter
Description
Default Tx Key
When ‘WEP’ Encryption is enabled then ‘Key 1’ will appear in
this field.
Key Format
There are two types of key format: ASCII and Hex. When you
select a key format, the number of characters of key will be
displayed.
Encryption Key 1
Input WEP key characters here, the number of characters must
be the same as the number displayed at ‘Key Format’ field.
You can use any alphanumerical characters (0-9, a-z, and A-Z)
if you select ‘ASCII’ key format, and if you select ‘Hex’ as key
format, you can use characters 0-9, a-f, and A-F. You must
enter at least one encryption key here, and if you have entered
multiple WEP keys, they should not be the same.
Policy
If Enabled, as per the policy defined clients will be either
allowed or rejected to connect wireless network.
MAC
Enter the MAC address of client.
When you finish with all settings, please click ‘
Apply
’ button to continue with other
setup procedures.

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