qpcom QP-WA252G User manual

www.qpcom.com
User’s Manual
QP-WA252G
802.11b/g Wireless
Access Point

FCC Certifications
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
CAUTION:
Any changes or modifications not expressly approved by the grantee of this device could void
the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) This device must
accept any interference received, including interference that may cause undesired operation.
FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with a minimum distance of
20cm between the radiator and your body.
CE Mark Warning
This is a Class B product. In a domestic environment, this product may cause radio
interference, in which case the user may be required to take adequate measures.
All trademarks and brand names are the property of their respective proprietors.
Specifications are subject to change without prior notification.

Table of Content
Introduction ....................................................................................................................... 1
F EATURES ........................................................................................................................ 1
A PPLICATION ................................................................................................................... 2
P ARTS N AMES AND F UNCTIONS ......................................................................................... 3
F ACTORY D EFAULT S ETTINGS ........................................................................................... 5
Wireless AP ................................................................................................................. 5
Hardware Connection........................................................................................................ 6
Check the LEDs: .......................................................................................................... 6
About the Operation Modes .............................................................................................. 7
A CCESS P OINT M ODE ....................................................................................................... 7
WDS R EPEATER M ODE .................................................................................................... 7
C LIENT M ODE (I NFRASTRUCTURE ).................................................................................... 7
C LIENT M ODE (A D - HOC ) .................................................................................................. 8
WDS B RIDGE M ODE ......................................................................................................... 8
Configuration..................................................................................................................... 9
L OGIN .............................................................................................................................. 9
S TATUS .......................................................................................................................... 10
System........................................................................................................................ 10
Statistics .................................................................................................................... 11
W IRELESS ...................................................................................................................... 12
Basic Settings............................................................................................................. 12
Advanced Settings ...................................................................................................... 13
Security...................................................................................................................... 17
Access Control ........................................................................................................... 19
TCP/IP .......................................................................................................................... 21
Basic.......................................................................................................................... 21
O THER ........................................................................................................................... 23
Upgrade Firmware..................................................................................................... 23
Save/Reload Settings .................................................................................................. 24
Password ................................................................................................................... 26
System Log................................................................................................................. 26

1
INTRODUCTION
This is an IEEE802.11b/g compliant 11 Mbps & 54 Mbps Ethernet Wireless Access Point.
The Wireless Access Point is equipped with two 10/100 M Auto-sensing Ethernet ports
for connecting to LAN and also for cascading to next Wireless Access Point.
This Access Point provides 64/128bit WEP encryption, WPA and IEEE802.1x which
ensures a high level of security to protects users’ data and privacy. The MAC Address
filter prevents the unauthorized MAC Addresses from accessing your Wireless LAN.
Your network security is therefore double assured.
The web-based management utility is provided for easy configuration that your wireless
network connection is ensured to be always solid and hassle free.
Features
•Two LAN ports for Wireless AP cascade.
•Support WPA.
•Support AP client mode.
•Support WDS for bridge mode.
•Support data rate automatic fallback.
•Automatic channel selection.
•Client access control.
•Support 802.1x/Radius client with EAP-TLS, TKIP, AES encryption.
•Support IAPP.
•Adjustable Tx power, Tx rate, and SSID broadcast.
•Allow WEP 64/128 bit.
•Web interface management.
•Support System event log and statistics.
•MAC filtering (For wireless only).

2
A p p l i c ati o n
Example 1
Example 2

3
P arts N am es an d Fun c ti o n s
1. Front Panel: (LED Indicators)
LED Status
Indicator Color Solid Flashing
1 Power Green Turns solid green when
power is applied to this
device.
N/A.
2 Status Red Turns solid red when the
device is booting, after
boot scuessfully, the light
turn off.
Link/Act. Green Turns solid green when
connected and associated
to at least a client station.
Receiving/
Sending data
WEP/WP
A
Orange Turns solid orange when
wireless security is
enabled.
N/A
MAC
Ctrl
Orange Turns solid orange when
MAC Control is enabled.
N/A
3~6
Wireless
WDS Orange Turn solid orange when
WDS is enabled.
N/A
7LAN 1
8 LAN 2
Green Turns solid green when
linked to a local network.
Receiving/
Sending data
Table 1: LED Indicators

4
2. Rear Panel: Connection Ports
Port/button Functions
A 12V DC Connects the power adapter plug
B LAN1 Connects to Ethernet
C LAN2 Connects to Ethernet
D (Factory)
RESET
Press over 3 seconds to reboot this device.
Press for over 10 seconds to restore factory settings.
Performing
the Factory Reset will erase all previously
entered device settings.
Table 2: Connection Ports

5
Fac to ry D ef aul t S etti n g s
Setting Wireless Access Point
Device Name Wireless AP
SSID Default value: 



 
  
 
Channel 11
WEP Default value: Disabled
IP Address 192.168.1. 254


6
H A RDW A RE CONNE CTION
Note: Before you starting hardware connection, you are advised to find an appropriate
location to place the Access Point. Usually, the best place for the Access Point is at the
center of your wireless network, with line of straight to all your wireless stations. Also,
remember to adjust the antenna; usually the higher the antenna is placed, the better will
be the performance.
1. Connect to your local area network: connect a Ethernet cable to one of the
Ethernet port (LAN1 or LAN2) of this Wireless Access Point, and the other end to a
hub, switch, router, or another wireless access point.
2. Power on the device: connect the included AC power adapter to the Wireless Access
Point’s power port and the other end to a wall outlet.
Check the LEDs:
The Power and LAN # LEDs should be ON. LAN# LED will even blink if there is traffic.
The Link/Act LED will be on in static when associated with a station and blink whenever
this AP receives data packets in the air.
If the Status LED glows after self-test , it means this Wireless Access Point fails on self
test. Please ask your dealer for technical support.
3. Configure your PC: Make sure your local PC(s) has wireless network adapter
installed.

7
A B OUT TH E OP E RA TION M ODE S
This device provides four operational applications with Access Point, Bridge, Client
(Ad-hoc) and Client (Infrastructure) modes, which are mutually exclusive.
This device is shipped with configuration that is functional right out of the box. If you
want to change the settings in order to perform more advanced configuration or even
change the mode of operation, you can use the web-based utility provided by the
manufacturer as described in the following sections.
A c c ess P o i n t M o d e
When acting as an access point, this device connects all the stations (PC/notebook with
wireless network adapter) to a wired network. All stations can have the Internet access if
only the Access Point has the Internet connection.
See the sample application below.
To set the operation mode to Access Point, please go to “Wireless Basic Settings”, in
the “Mode” field click the down arrow to select AP mode.
W D S R ep eater M o d e
Refer to the illustration below. While acting as Bridges, AP1 (with Station 1 being
associated to) and AP2 (with Station 2 being associated) can communicate with each other
through wireless interface (with WDS). Thus Station 1 can communicate with Station 2
and both Station 1 and Station 2 are able to access the Internet if only AP1 or AP2 has the
Internet connection.
To set the operation mode to Bridge, please go to “Wireless Basic Settings”, in the
“Mode” field click the down arrow to select AP mode. And go to “Wireless WDS
Settings” to enable WDS.
C l i en t M o d e ( I n f rastruc ture)
If set to Client (Infrastructure) mode, this device can work like a wireless station when it’s
connected to a computer so that the computer can send packets from wired end to wireless
interface.
Refer to the illustration below. This station (AP1 plus the connected computer 1) can
associate to another Access Point (AP2), and then can have the Internet access if the other
Access Point (AP2) has the Internet connection.
To set the operation mode to Client (Infrastructure), please go to “Wireless Basic
Settings”, in the “Mode” field click the down arrow to select Client mode, and then
select “Network Type” as “Infrastructure”.

8
C l i en t M o d e ( A d h o c )
If set to the Client (Ad-hoc) mode, this device can work like a wireless station when it is
connected to a computer so that the computer can send packets from wired end to wireless
interface. You can share files and printers between wireless stations (PC and laptop with
wireless network adapter installed).
See the sample application below.
To set the operation mode to Client (Ad-hoc), please go to “Wireless Basic Settings”,
in the “Mode” field click the down arrow to select Client mode, and then select
Network Type as “Ad-hoc”.
W D S B ri d g e M o d e
The WDS (Wireless Distributed System) function lets this access point act as a wireless
LAN access point and repeater at the same time. Users can use this feature to build up a
large wireless network in a large space like airports, hotels and schools …etc. This feature
is also useful when users want to bridge networks between buildings where it is
impossible to deploy network cable connections between these buildings.

9
CONF IG URA TION
Login
1. Start your computer. Connect an Ethernet cable between your computer and the
Wireless Access Point.
2. Make sure your wired station is set to the same subnet as the Wireless Access Point,
i.e. 192.168.1.254
3. Start your WEB browser. In the Address box, enter the following:





The configuration menu is divided into four categories: Status, Wireless, TCP/IP,
and Other settings. Click on the desired setup item to expand the page in the main
navigation page. The setup pages covered in this utility are described below.
No username and password required for the fist login, however, you can set up a set
of password for the future security and username is can’t change, for detailed
configuration, please refer to the Password in the later section of Configuration.
4. Default username: please key in “admin” on login web page.

10
S tatus
In this screen, you can see the current settings and status of this Access Point. You
can change settings by selecting specific tab described in below.
System
System
Uptime The time period since the device was up.
Firmware Version The current version of the firmware installed in this device.
Wireless Configuration
Wireless Mode There are four modes supported, Access Point, Client (Ad-
hoc and Infrastructure), WDS Bridge and WDS repeater
.
The default mode is Access Point. If you want t
o change to
bridge mode, please go to Wireless/WDS Setting
to enable
the WDS function.
SSID The SSID differentiates one WLAN from another,
therefore,
all access points
and all devices attempting to connect to a
specific WLAN must use the same SSID. It is case-
sensitive
and must not exceed 32 characters.
A device will not be
permitted to join the BSS unless it can provide the unique

11
SSID. An SSID is also referred to as a network name
because
essentially it is a name that identifies a wireless network.
Channel Number
The number of channels supported depends on the region of
this Access Point. All stations communicating with the
Access
Point must use the same channel.
Encryption WEP Encryption (Wired Equivalent Privacy) is
set to
Disabled by default. When W
EP is enabled, data packet is
encrypted
before being transmitted. The WEP prevents data packets
from
being eavesdropped by unrelated people. B
y using WEP data
encryption, there may be a significant degradation of the data
throughput on the wireless link.
Associated Clients
Displays the total number of clients associated to this AP. You
can have up to 64 clients to associate to this Access Point.
BSSID BSSID
displays the ID of current BSS, which uniquely
identifies each BSS. In AP mode, this value is th
e MAC
address of this Access Point.
TCP/IP Configuration
IP Protocol Display the method to get the IP of this AP, which could be
obtained by Fixed-IP or DHCP-client.
br0 IP Address Current IP address for this Access Point
br0 Subnet Mask Current Subnet mask for this Access Point
br0 Default Gateway Default Gateway for this Access Point
br0 MAC Address The MAC Address for this Access Point
Statistics
The Statistics table shows the packets sent/received over wireless and ethernet LAN
respectively.

12
W i rel ess
Basic Settings
This page includes all primary and major parameters. Any parameter change will cause
the device to reboot for the new settings to take effect.
Disable Wireless LAN Interface
Check the box to disable the Wireless LAN
Interface, by so doing, you won’
t be able to
make wireless connection with this Access
Point in the network you are located. In
other words,
this device will not be visible
by any wireless station.
Band
You can choose one mode of the following
you need.
2.4GHz (B):
802.11b supported rate
only.
2.4GHz (G):
802.11g supported rate
only.
2.4GHz (B+G):
802.11b supported rate
and 802.11g supported rate.
The default is 2.4GHz (B+G) mode.
Mode
This Wireless Access
Point can support
four

13
modes AP, Client, Bridge and Repeater.
Network Type When in Client
mode, you can select
between Ad-Hoc and Infrastructure.
SSID
The SSID differentiates one WLAN from
another, therefore, all access points
and all
devices attempting to connect to a specific
WLAN must use the same SSID. It is case-
sensitive and must not exceed 32 characters.
A device will not be permitted to join the
BSS unless it can provide the unique SSID.
An SSID is also referred to as a
network
name
because essentially it is a name that
identifies a wireless network.
Channel Number Allow user to set the channel manually or
automatically.
If set channel manually,
just select the
channel you want to specify.
If “Auto” is selected, user can set the
channel range to have Wireless Access Point
automatic
ally survey and choose the channel
with best situation for communication.
The number of channels supported depends
on the region of this Access Point.
All
stations communicating with the
Access
Point must use the same channel.
Enable Mac Clone (Single Et
hernet
Client)
If your ISP restricts service to PCs only, use
the MAC Clone feature to copy a PC Media
Access Control (MAC) address to your
router. This procedure will cause the router
to appear
as a single PC, while allowing online access
to multiple computers on your network.
Apply Changes
Press to save the new settings on the screen.
Reset
Press to discard the data you have entered
since last time you press Apply Change.
Advanced Settings
It is not recommended that settings in this page to be changed unless advanced users want
to change to meet their wireless environment for optimal performance

14
Authentication Type
To provide a certain level of security, the IEEE 802.11
standard has defined two types of authentication methods,
Open System a
nd Shared Key. With Open System
authentication, a wireless PC can join any network and
receive any messages that are not encrypted. With Shared
Key authentication, only those PCs that possess the correct
authentication key can join the network. By default,
IEEE
802.11 wireless devices operate in an Open System network.
Wired Equivalent Privacy (WEP) data encryption is used
when the wireless devices are configured to operate in
Shared Key authentication mode.
If the Access Point is using Open System, then t
he wireless
adapter will need to be set to the same authentication mode.
Shared Key is used
when both the sender and the recipient
share a secret key.
Select Auto for the network
adapter to select the
Authentication mode automatically depending on the Acce
ss
Point Authentication mode.

15
Fragment Threshold Fragmentation mechanism is used for improving the
efficiency when high traffic flows along in the wireless
network. If your 802.11g Wireless LAN PC Card often
transmit large files in wireless network, you can enter new
Fragment Threshold value to split the packet. The value
can be set from 256 to 2346. The default value is 2346.
RTS Threshold
RTS Threshold is a mechanism implemented to prevent the
“Hidden Node” problem. “Hidden Node”
is a situation in
whic
h two stations are within range of the same Access
Point, but are not within range of each other. Therefore, they
are hidden nodes for each other. When a station starts data
transmission with the Access Point, it might not notice that
the other station is
already using the wireless medium. When
these two stations send data at the same time, they might
collide when arriving simultaneously at the Access Point.
The collision will most certainly result in a loss of messages
for both stations.
Thus, the RTS Threshold mechanism provides a
solution to
prevent data collisions. When you enable RTS Threshold on
a suspect “hidden station”
, this station and its Access Point
will use a Request to Send (RTS). The station will send an
RTS to the Access Point, informing tha
t it is going to
transmit the data. Upon receipt, the Access Point will
respond with a CTS message to all station within its range to
notify all other stations to defer transmission. It will
also
confirm the requestor station that the Access Point has
reserved it for the time-frame of the requested transmission.
If the “Hidden Node”
problem is an issue, please specify the
packet size.
The RTS mechanism will be activated if the data
size exceeds the value you set.. The default value is 2347.
Warning: Enabling RTS Threshold will cause redundant
network overhead that could negatively affect the
throughput performance instead of providing a remedy.
This value should remain at its default setting of 2347
. Should you
encounter inconsistent data flow, only mino
r modifications of this
value are recommended.
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

16
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. I
n a "noisy"
network environment, the Preamble Type should be set to
Long Preamble. The Short Preamble is in
tended 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.
Apply Change Press to save the new settings on the screen.
Reset
Press to discard the data you have entered since last time
you press Apply Change.

17
Security
Here you can configure the security of your wireless network. Selecting different method
will enable you to have different level of security. Please note that by using any
encryption, by which data packet is encrypted before transmission to prevent data packets
from being eavesdropped by unrelated people, there may be a significant degradation of
the data throughput on the wireless link.
Encryption: None ( Encryption is set to None by default. )
If Use 802.1x Authentication is selected, the RADIUS Server will proceed to check the
802.1x Authentication.
Encryption: WEP
If WEP is selected, users will have to Set WEP keys either manually, or select to Use
802.1x Authentication to make the RADIUS server to issue the WEP key dynamically.