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382
To configure the WDS web page settings, open
Wireless LAN>>WDS
to get the following
page:
Available settings are explained as follows:
Item
Description
Mode
Choose the mode for WDS setting.
Disable
mode will not
invoke any WDS setting.
Bridge
mode is designed to fulfill
the first type of application.
Repeater
mode is for the
second one.
Security
There are three types for security,
Disable
,
WEP
and
Pre-shared key
. The setting you choose here will make the
following WEP or Pre-shared key field valid or not. Choose
one of the types for the router.
WEP
When
WEP
is selected as Security above, Vigor router will
use
the same WEP key set in
Wireless LAN>>Security
Settings
page.
All you have to do is to make sure WEP mode and WEP
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key setting have been configured properly in
Wireless
LAN>>Security Settings.
Note:
If
Security
mode configured in
Wireless
LAN>>Security Settings
page is not the same as the
security mode set here, a warning message will appear and
ask you to make the same configuration.
Pre-shared Key
When
Pre-Shared Key
is selected as Security above,
configure the following settings if required.
Type –
There are some types for you to choose.
WPA
and
WPA2
are used for WDS devices (e.g.2925n wireless
router, you can set the encryption mode as WPA or WPA2
to establish your WDS system between AP and the router.
Key –
Set
the encryption key in this field. Type 8 ~ 63
ASCII characters or 64 hexadecimal digits leading by “0x”.
Bridge
If you choose
Bridge
as the connecting mode, please type
in the peer MAC address (of VigorAP/Vigor router required
to make connection with such Vigor router) in these fields.
Four peer MAC addresses are allowed to be entered in this
page at one time. Yet please disable the unused link to get
better performance. If you want to invoke the peer MAC
address, remember to check
Enable
box in the front of the
MAC address after typing.
Repeater
If you choose
Repeater
as the connecting mode, please
type in the peer MAC address (of VigorAP/Vigor router
required to make connection with such Vigor router and
used to extend the wireless signal) in these fields.
Four peer MAC addresses are allowed to be entered in this
page at one time. Similarly, if you want to invoke the peer
MAC address, remember to check
Enable
box in the front
of the MAC address after typing.
Access Point Function
Click
Enable
to make this router serve as an access point.
Status
It allows user to send “hello” message to peers. Yet, it is
valid only when the peer also supports this function.
After finishing all the settings here, please click
OK
to save the configuration.
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3.16.7 Advanced Setting
This page allows users to set advanced settings such as operation mode, channel bandwidth,
guard interval, and aggregation MSDU for wireless data transmission.
or,
Available settings are explained as follows:
Item
Description
Operation Mode
Mixed Mode
– the router can transmit data with the ways
supported in both 802.11a/b/g and 802.11n standards.
However, the entire wireless transmission will be slowed
down if 802.11g or 802.11b wireless client is connected.
Green Field
– to get the highest throughput, please choose
such mode. Such mode can make the data transmission
happen between 11n systems only. In addition, it does not
have protection mechanism to avoid the conflict with
neighboring devices of 802.11a/b/g.
Channel Bandwidth
20-
the router will use 20Mhz for data transmission and
receiving between the AP and the stations.
20/40 –
the router will use 20Mhz or 40Mhz for data
transmission and receiving according to the station capability.
Such channel can increase the performance for data transit.
20/40/80 –
the router will use 20Mhz, 40Mhz or 80Mhz for
data transmission and receiving according to the station
capability. Such channel can increase the performance for
data transit.
Guard Interval
It is to assure the safety of propagation delays and reflections
for the sensitive digital data. If you choose
auto
as guard
interval, the AP router will choose short guard interval
(increasing the wireless performance) or long guard interval
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for data transmit based on the station capability.
Aggregation MSDU
Aggregation MSDU can combine frames with different sizes
.
It is used for improving MAC layer’s performance for some
brand’s clients. The default setting is
Enable.
Long Preamble
This option is to define the length of the sync field in an
802.11 packet. Most modern wireless network uses short
preamble with 56 bit sync field instead of long preamble with
128 bit sync field. However, some original 11b wireless
network devices only support long preamble. Click
Enable
to
use
Long Preamble
if needed to communicate with this kind
of devices.
Packet-OVERDRIVE
This feature can enhance the performance in data
transmission about 40%* more (by checking
Tx Burst
). It is
active only when both sides of Access Point and Station (in
wireless client) invoke this function at the same time. That is,
the wireless client must support this feature and invoke the
function, too.
Note:
Vigor N61 wireless adapter supports this function.
Therefore, you can use and install it into your PC for
matching with Packet-OVERDRIVE (refer to the following
picture of Vigor N61 wireless utility window, choose
Enable
for
TxBURST
on the tab of
Option
).
Note:
* means the real transmission rate depends on the
environment of the network.
Tx Power
Set the power percentage for transmission signal of access
point.
The greater the value is, the higher intensity of the
signal will be.
After finishing all the settings here, please click
OK
to save the configuration.
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3.16.8 WMM Configuration
WMM is an abbreviation of Wi-Fi Multimedia. It defines the priority levels for four access
categories derived from 802.1d (prioritization tabs). The categories are designed with specific
types of traffic, voice, video, best effort and low priority data. There are four accessing
categories - AC_BE , AC_BK, AC_VI and AC_VO for WMM.
APSD (automatic power-save delivery) is an enhancement over the power-save mechanisms
supported by Wi-Fi networks. It allows devices to take more time in sleeping state and
consume less power to improve the performance by minimizing transmission latency.
Available settings are explained as follows:
Item
Description
WMM Capable
To apply WMM parameters for wireless data transmission,
please click the
Enable
radio button.
APSD Capable
The default setting is
Disable
.
Aifsn
It controls how long the client waits for each data
transmission. Please specify the value ranging from 1 to 15.
Such parameter will influence the time delay for WMM
accessing categories. For the service of voice or video
image, please set small value for AC_VI and AC_VO
categories For the service of e-mail or web browsing, please
set large value for AC_BE and AC_BK categories.
CWMin/CWMax
CWMin
means contention Window-Min and
CWMax
means contention Window-Max. Please specify the value
ranging from 1 to 15. Be aware that CWMax value must be
greater than CWMin or equals to CWMin value. Both
values will influence the time delay for WMM accessing
categories. The difference between AC_VI and AC_VO
categories must be smaller; however, the difference

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