How it Works
Sercomm
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AP51GA
User Manual
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UserMan rev
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Sercomm AP51GA User Manual

TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION..............................................................................................1
Features of your Wireless Access Point...........................................................................1
Package Contents...............................................................................................................3
CHAPTER 2 INSTALLATION...............................................................................................5
Requirements..................................................................................................................... 5
Procedure...........................................................................................................................5
CHAPTER 3 ACCESS POINT SETUP...................................................................................7
Overview ............................................................................................................................ 7
Setup using the Windows Utility......................................................................................7
Setup using a Web Browser..............................................................................................9
Access Control Screen.....................................................................................................14
Advanced Settings ...........................................................................................................25
CHAPTER 4 PC AND SERVER CONFIGURATION........................................................27
Overview .......................................................................................................................... 27
Using WEP.......................................................................................................................27
Using WPA-PSK............................................................................錯誤! 尚未定義書籤。
CHAPTER 5 OPERATION AND STATUS ......................................................................... 46
CHAPTER 6 OTHER SETTINGS & FEATURES..............................................................51
Overview .......................................................................................................................... 51
Admin Login Screen........................................................................................................51
Firmware Upgrade.......................................................................................................... 54
APPENDIX A SPECIFICATIONS........................................................................................55
APPENDIX B TROUBLESHOOTING.................................................................................59
Overview .......................................................................................................................... 59
General Problems ............................................................................................................59
APPENDIX C WINDOWS TCP/IP.......................................................................................61
Overview .......................................................................................................................... 61
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P/N: 9560N90001 Copyright 2004. All Rights Reserved. Document Version: 1.1
All trademarks and trade names are the properties of their respective owners.
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Chapter 1
Introduction
This Chapter provides an overview of the Wireless Access Point's features and capabilities.
Congratulations on the purchase of your new Wireless Access Point. The Wireless Access Point links your 802.11g or 802.11b Wireless Stations to your wired LAN. The Wireless stations and devices on the wired LAN are then on the same network, and can communicate with each other without regard for whether they are connected to the network via a Wireless or wired connection.
Figure 1: Wireless Access Point
The auto-sensing capability of the Wireless Access Point allows packet transmission up to 54Mbps for maximum throughput, or automatic speed reduction to lower speeds when the environment does not permit maximum throughput.
Features of your Wireless Access Point
The Wireless Access Point incorporates many advanced features, carefully designed to provide sophisticated functions while being easy to use.
• Standards Compliant. The Wireless Router complies with the IEEE802.11g (DSSS)
specifications for Wireless LANs.
• Supports both 802.11b and 802.11g Wireless Stations. The 802.11g standard
provides for backward compatibility with the 802.11b standard, so both 802.11b and
802.11g Wireless stations can be used simultaneously.
• 802.1x Support. Support for 802.1x mode is included, providing for the industrial-
strength wireless security of 802.1x authentication and authorization.
• Radius Client Support. The Wireless Access Point can login to your existing Radius
Server (as a Radius client).
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Wireless Access Point User Guide
• Dynamic WEP key Support. In 802.1x mode, either fixed or Dynamic WEP keys can be
used.
• Upgradeable Firmware. Firmware is stored in a flash memory and can be upgraded
easily, using only your Web Browser.
• WEP support. Support for WEP (Wired Equivalent Privacy) is included. Both 64 Bit
and 128 Bit keys are supported.
• WPA support. Support for WPA is included. WPA is more secure than WEP, and should
be used if possible.
• Access Control. The Access Control feature can ensure that only trusted Wireless
Stations can use the Wireless Access Point to gain access to your LAN.
• Simple Configuration. If the default settings are unsuitable, they can be changed
quickly and easily.
• DHCP Client Support. Dynamic Host Configuration Protocol provides a dynamic IP
address to PCs and other devices upon request. The Wireless Access Point can act as a DHCP Client, and obtain an IP address and related information from your existing DHPC Server.
• NetBIOS & WINS Support. Support for both NetBIOS broadcast and WINS (Win-
dows Internet Naming Service) allows the Wireless Access Point to easily fit into your existing Windows network.
• Password - protected Configuration. Optional password protection is provided to
prevent unauthorized users from modifying the configuration data and settings.
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Introduction
Package Contents
The following items should be included:
• Wireless Access Point
• Power Adapter
• Quick Start Guide
• CD-ROM containing the on-line manual
If any of the above items are damaged or missing, please contact your dealer immediately.
Physical Details
Front Panel LEDs
Figure 2: Front Panel
Status On - Error condition.
Off - Normal operation. Blinking - During start up, and when the Firmware is being upgraded.
Power On - Normal operation.
Off - No power
LAN On - The LAN (Ethernet) port is active.
Off - No active connection on the LAN (Ethernet) port. Flashing - Data is being transmitted or received via the corresponding
LAN (Ethernet) port.
Wireless LAN
On - Idle Off - Error- Wireless connection is not available. Flashing - Data is being transmitted or received via the Wireless access
point. Data includes "network traffic" as well as user data.
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Wireless Access Point User Guide
Rear Panel
Figure 3 Rear Panel
Antenna
Console port Reset Button
Ethernet
Power port
One antenna (aerial) is supplied. Best results are usually obtained with the antenna in a vertical position.
DB9 female RS232 port. This button has two (2) functions:
• Reboot. When pressed and released, the Wireless Access Point
will reboot (restart).
• Reset to Factory Defaults. This button can also be used to clear
ALL data and restore ALL settings to the factory default values.
To Clear All Data and restore the factory default values:
1. Power Off the Access Point
2. Hold the Reset Button down while you Power On the Access Point.
3. Continue holding the Reset Button until the Status (Red) LED blinks TWICE.
4. Release the Reset Button. The factory default configuration has now been restored, and the Access Point is ready for use.
Use a standard LAN cable (RJ45 connectors) to connect this port to a 10BaseT or 100BaseT hub on your LAN.
Connect the supplied power adapter here.
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Chapter 2
Installation
This Chapter covers the physical installation of the Wireless Access Point.
Requirements
Requirements:
• TCP/IP network
• Ethernet cable with RJ-45 connectors
• Installed Wireless network adapter for each PC that will be wirelessly connected to the
network
Procedure
1. Select a suitable location for the installation of your Wireless Access Point. To maximize reliability and performance, follow these guidelines:
• Use an elevated location, such as wall mounted or on the top of a cubicle.
• Place the Wireless Access Point near the center of your wireless coverage area.
• If possible, ensure there are no thick walls or metal shielding between the Wireless
Access Point and Wireless stations. Under ideal conditions, the Wireless Access Point has a range of around 150 meters (450 feet). The range is reduced, and transmission speed is lower, if there are any obstructions between Wireless devices.
Figure 4: Installation Diagram
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Wireless Access Point User Guide
2. Use a standard LAN cable to connect the “Ethernet” port on the Wireless Access Point to a 10/100BaseT hub on your LAN.
3. Connect the supplied power adapter to the Wireless Access Point and a convenient power outlet, and power up.
4. Check the LEDs:
• The Status LED should flash, then turn OFF.
• The Power, WLAN, and LAN LED should be ON.
For more information, refer to Front Panel LEDs in Chapter 1.
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Chapter 3
Access Point Setup
This Chapter provides details of the Setup process for Basic Operation of your Wireless Access Point.
Overview
This chapter describes the setup procedure to make the Wireless Access Point a valid device on your LAN, and to function as an Access Point for your Wireless Stations.
Wireless Stations may also require configuration. For details, see Chapter 4 - Wireless Station Configuration.
The Wireless Access Point can be configured using either the supplied Windows utility or your Web Browser
Setup using the Windows Utility
A simple Windows setup utility is supplied on the CD-ROM. This utility can be used to assign a suitable IP address to the Wireless Access Point. Using this utility is recommended, because it can locate the Wireless Access Point even if it has an invalid IP address.
Installation
1. Insert the supplied CD-ROM in your drive.
2. Run the SETUP.exe program in the root folder.
3. Follow the prompts to complete the installation.
Main Screen
• Start the program by using the icon created by the setup program.
• When run, the program searches the network for all active Wireless Access Points, then
lists them on screen, as shown by the example below.
Figure 5: Management utility Screen
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Wireless Access Point User Guide
Wireless Access Points
On the center of the screen is a list of all Wireless Access Points found on the network. For each device, the following data is shown:
• Server Name. The Server Name is shown on a sticker on the base of the device.
• IP. The IP address for the Wireless Access Point.
• MAC. The hardware or physical address of the Wireless Access Point.
• SSID. The SSID setting for the Wireless Access Point. (The SSID is case sensitive.)
• Channel. The current channel used by the Wireless Access Point.
• Version. The current version number for the Wireless Access Point.
• Description. Any extra information for the Wireless Access Point.
Note: If the desired Wireless Access Point is not listed, check that the device is installed and ON, then Refresh the list.
Buttons
• Refresh. Click this button to update the Wireless Access Point device listing after chang- ing the name or IP Address.
• Web Management. You can use this button to connect the Wireless Access Point to do some setup using web browser.
• Set IP Address. Click this button if you want to change the IP Address of the device.
• Exit. Exit the Management utility program by clicking this button.
Setup Procedure
1. Select the desired Wireless Access Point.
2. Click the Set IP Address button.
3. If prompted, enter the user name and password. The default values are admin for the User Name, and a blank Password
4. Ensure the IP address, Network Mask, and Gateway are correct for your LAN. Save any changes.
5. Click the Web Management button to connect to the selected Wireless Access Point using your Web Browser. If prompted, enter the User Name and Password again.
6. Configure the following screens, using the on-line help if necessary. The following section also provides more details about each of these screens.
• Wireless
• Security
• Password
7. Setup is now complete.
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Setup
Setup using a Web Browser
Your Browser must support JavaScript. The configuration program has been tested on the following browsers:
• Netscape V4.08 or later
• Internet Explorer V4 or later
Setup Procedure
Before commencing, install the Wireless Access Point in your LAN, as described previously.
1. Check the Wireless Access Point to determine its Default Name. This is shown on a label on the base or rear, and is in the following format:
SCxxxxxx Where xxxxxx is a set of 6 Hex characters ( 0 ~ 9, and A ~ F ).
2. Use a PC which is already connected to your LAN, either by a wired connection or another Access Point.
• Until the Wireless Access Point is configured, establishing a Wireless connection to it
may be not possible.
• If your LAN contains a Router or Routers, ensure the PC used for configuration is on
the same LAN segment as the Wireless Access Point.
3. Start your Web browser.
4. In the Address box, enter "HTTP://" and the Default Name of the Wireless Access Point e.g.
HTTP://SC2D631A
5. You should then see a login prompt, which will ask for a User Name and Password. Enter admin for the User Name, and password for the Password. These are the default values. The password (but not the user name) can and should be changed. Always enter the current password, as set on the Admin Login screen.
Figure 6: Password Dialog
6. You will then see the Status screen, which displays the current settings and status. No data input is possible on this screen.
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Wireless Access Point User Guide
7. From the menu, select and configure the following options, as described in the following sections:
• System
• Access Control
• 2.4GHz Wireless
• Basic
• Security
• Advanced
• Management
8. Setup of the Wireless Access Point is now complete. Wireless stations must now be set to match the Wireless Access Point. See Chapter 4 for details.
If you can't connect:
It is likely that your PC’s IP address is incompatible with the Wireless Access Point’s IP address. This can happen if your LAN does not have a DHCP Server. The default IP address of the Wireless Access Point is 192.168.0.100, with a Network Mask of 255.255.255.0.
If your PC’s IP address is not compatible with this, you must change your PC’s IP address to an unused value in the range 192.168.0.1 ~ 192.168.0.254, with a Net­work Mask of 255.255.255.0. See Appendix C - Windows TCP/IP for details for this procedure.
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Setup
Status Screen
When you first connect, you will see the Status screen. This displays the current settings and status of the Wireless Access Point. No data can be input on this screen.
Figure 7: Status Screen
For further details of this screen, refer to Status Screen in Chapter 5.
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Wireless Access Point User Guide
System Screen
Click System on the menu to view a screen like the following.
Data - System Screen
Identification
Access Point Name
Description Country Domain MAC Address
IP Address
DHCP Client
Fixed
Enter a suitable name for this Access Point.
If desired, you can enter a description for the Access Point. Select the country or domain matching your current location. The read-only field shows the current MAC Address.
Select this option if you have a DHCP Server on your LAN, and you wish the Access Point to obtain an IP address automatically.
If selected, the following data must be entered.
• IP Address - The IP Address of this device. Enter an unused IP
• Subnet Mask - The Network Mask associated with the IP Address
• Gateway - The IP Address of your Gateway or Router. Enter the
• DNS - Enter the DNS (Domain Name Server) used by PCs on your
Figure 8: System Screen
address from the address range on your LAN.
above. Enter the value used by other devices on your LAN.
value used by other devices on your LAN.
LAN.
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WINS
Setup
Enable WINS
WINS Server Name/IP Ad­dress
Telnet
Enable Telnet Management
If your LAN has a WINS server, you can enable this to have this AP register with the WINS server.
Enter the name or IP address of your WINS server.
If desired, you can enable this option. If enabled, you will able to connect to this AP using a Telnet client. You will have to provide the same login data (user name, password) as for a HTTP (Web) connec­tion.
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Wireless Access Point User Guide
Access Control Screen
This feature can be used to block access to your LAN by unknown or untrusted wireless sta­tions.
Click Access Control on the menu to view a screen like the following.
Figure 9: Access Control Screen
Data - Access Control Screen
Enable
Trusted Stations
Buttons
Modify List
Read from File
Write to File
Use this checkbox to Enable or Disable this feature as desired. Warning ! Ensure you own PC is in the "Trusted Wireless Stations"
list before enabling this feature.. This table lists any Wireless Stations you have designated as "Trusted".
If you have not added any stations, this table will be empty. For each Wireless station, the following data is displayed:
• MAC Address - the MAC or physical address of each Wire-
less station.
• Connected - this indicates whether or not the Wireless station
is currently associates with this Access Point.
To change the list of Trusted Stations (Add, Edit, or Delete a Wireless Station or Stations), click this button.
To upload a list of Trusted Stations from a file on your PC, click this button.
To download the current list of Trusted Stations from the Access Point to a file on your PC, click this button.
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Setup
Trusted Wireless Stations
This feature can be used to block access to your LAN by unknown or untrusted wireless sta­tions., use the Modify List button on the Access Control screen. You will see a screen like the sample below.
Figure 10: Trusted Wireless Stations
Data - Trusted Wireless Stations
Trusted Wireless Stations
Other Wireless Stations
Address
Buttons
<<
>>
Edit
This lists any Wireless Stations which you have designated as “Trusted”.
This list any Wireless Stations detected by the Access Point, which you have not designated as "Trusted".
Used when adding or editing a Trusted Station, to display or enter the address (MAC or physical address) of the Wireless station.
Used to add Wireless stations to the Trusted Wireless Station list. Select the desired Station or Stations in the Other Wireless Stations list, then click this button.
Used to delete Wireless stations from the Trusted Wireless Station list. Select the desired Station or Stations in the Trusted Wireless Sta- tions list, then click this button.
Used to edit an existing Wireless Station:
1. Select a station in the Trusted Wireless Stations list
2. Click the Edit button. The data from the selected station is copied to the Address field, and the Add button changes to Up- date.
3. Edit the address as required.
4. Click the Update button to save your changes, or Clear if you do not wish to save.
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Wireless Access Point User Guide
Add
Clear
To add a Trusted Station which is not in the "Other Wireless Sta­tions" list, enter the required data and click this button.
Clear the Address field. If editing, this also cancels the edit and changes the Update button
back to Add.
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2.4GHz Wireless Screens
There are 3 configuration screens available:
• Basic
• Security
• Advanced
Basic Settings Screen
The settings on this screen must match the settings used by Wireless Stations. Click Basic on the menu to view a screen like the following.
Setup
Figure 11: Basic Settings Screen
Data - Basic Settings Screen
Operation
Wireless Mode
Select the desired option:
• Disable - select this if for some reason you do not this AP to
transmit or receive at all.
• 802.11b and 802.11g - this is the default, and will allow connec-
tions by both 802.11b and 802.1g wireless stations.
• 802.11b - if selected, only 802.11b connections are allowed.
802.11g wireless stations will only be able to connect if they are fully backward-compatible with the 802.11b standard.
• 802.11g - only 802.11g connections are allowed. If you only have
802.11g, selecting this option may provide a performance im­provement over using the default setting.
• Super 802.11g (108Mbps) - select this only if all wireless stations
support this mode.
• Dynamic Super 802.11g (108Mbps) - select this only if all
wireless stations support this mode.
• Static Super 802.11g (108Mbps) - select this only if all wireless
stations support this mode.
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Wireless Access Point User Guide
Operating Mode
Remote AP MAC Address
Channel No
Current Channel No.
SSID
Select the desired mode:
• Wireless Access Point - operate as a normal Access Point
• Client Access Point - act as a client for another Access Point. If
selected, you must provide the address (MAC address) of the other Access Point (Remote AP).
• Repeater Access Point - act as a repeater for another Access
Point. If selected, you must provide the address (MAC address) of the other Access Point (Remote AP).
This is not required unless the Operating Mode is "Client Access Point" or "Repeater Access Point". In either of these modes, you must provide the MAC address of the other AP in this field. You can either enter the MAC address directly, or, if the other AP is on-line, you can click the "Select AP" button and select from a list of available APs.
If "Automatic" is selected, the Wireless Access Point will self-select a Wireless Channel.
If you experience interference (shown by lost connections and/or slow data transfers) you may need to experiment with different channels to see which Channel is the best.
This displays the current channel used by the Access Point.
Enter the desired SSID. Wireless Stations must use the same SSID.
Broadcast SSID
Note: The SSID is case sensitive.
If Enabled, the SSID will be broadcast to all Wireless Stations. Stations which have no SSID (or a "null" value) can then adopt the correct SSID for connections to this Access Point.
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Security Settings
The Security screen is accessed from the main menu, and it provides 5 options as below:
• None
• WEP
• WPA-PSK
• WPA-802.1x
• 802.1X
Security Settings - None
If "None" is selected, no security is used, and there are no settings to configure.
Security Settings - WEP
Selecting the WEP option will result in a screen like the following.
Setup
Data - WEP Screen
WEP
Data Encryption
Figure 12: WEP Settings
Select the desired option:
• 64 Bit Encryption - Keys are 10 Hex (5 ASCII) characters.
• 128 Bit Encryption - Keys are 26 Hex (13 ASCII) charac-
ters.
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