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4

Interference

 

Interference happens when 2 APs with the same channels are placed near to one another. The 
speed of the network drops and the signal strength fluctuates wildly. 

Roaming 

Association happens when the SSID, Encryption and MAC Address Control settings are correct 
between the AP and client. If 2 APs with these same settings are located in the same area, the 
client would choose to associate to the one which gives it a better signal strength. The client 
would roam over to the 2nd AP when he moves nearer to it. The client switches AP and 
frequency as he does so. 
 

Summary of Contents for IWLAN

Page 1: ...Airlink User Manual for Universal Model and WLAN Ethernet Bridge Model ...

Page 2: ...ect 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 Any changes or modifications not expressly approved by the party ...

Page 3: ...ipheral requirements etc IMPORTANT NOTE In the event that these conditions can not be met then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product In these circumstances the OEM integrator will be responsible for re evaluating the end product including the transmitter and obtaining a separate FCC authorization End Product Labeling This transmitte...

Page 4: ...CONFIGURATION 6 WEB CONFIGURATION 6 BASIC CONFIGURATION 8 ADMINISTRATION 8 LOCATION 8 IP CONFIGURATION 8 OPERATION MODE 9 ADVANCE CONFIGURATION 11 RADIO SETTING 11 WPA SECURITY 12 SECURITY SERVER SETTINGS 12 NON WPA SECURITY 13 PROTOCOL 14 MISCELLANEOUS 14 STATUS 16 SYSTEM STATUS 16 ASSOCIATION STATUS 16 SUPER USER 17 SUPER USER 17 FIRMWARE UPGRADE 17 FIRMWARE VERSION 18 ...

Page 5: ... one device that allows multiple PCs to share a network Product Features Fully compatibility with IEEE 802 11g WLAN standard Wireless data rate of up to 54Mbps 2 4GHz license free frequency band Full backward compatibility with 802 11b standard WiFi 11Mbps 802 1x Authentication Used with a RADIUS server to check and verify the identity of WLAN users WEP Wired Equivalent Privacy A simple WLAN encry...

Page 6: ...icular software from using the connection Static IP Address Static IP addressing ensures that the device will always have the same IP address Static addressing is commonly used for your servers Dynamic IP Address A dynamic IP address is one that is automatically assigned to a PC These IP addresses are dynamic because they are only temporarily leased to the PC when it connects to the network This i...

Page 7: ...nable plug and play convenience most client cards can sniff the frequencies to extract the available SSIDs to let the user choose from Encryption WLAN traffic can be captured by anybody to be read The solution is to use encryption to make the traffic appear as random characters to the eavesdropper Both the AP and client must use the same encryption standard and key to enable them to decode the rub...

Page 8: ...ssociation happens when the SSID Encryption and MAC Address Control settings are correct between the AP and client If 2 APs with these same settings are located in the same area the client would choose to associate to the one which gives it a better signal strength The client would roam over to the 2nd AP when he moves nearer to it The client switches AP and frequency as he does so ...

Page 9: ...elephones taking up no more space on the desktop The cables are all connected to the top right hand side of ExpressPort adapter Connect the Ethernet cable and telephone cable as shown in the figure below Please note that the head of the Ethernet Cable looks similar to a phone connector but is bigger Phone Cable Ethernet Cable ...

Page 10: ...pe ExpressPort adapter s LAN IP 192 168 1 20 address into the browser s Address field 4 Enter username and password There are two types of users admin user and super user The default username and password for admin user is admin admin while the default username and password for super user is super super Super user will be able to access more features in the web server as compared to the admin user...

Page 11: ...7 Remember that after every configuration change it is necessary to Click Update on the page Reboot ExpressPort adapter The changes take effect only AFTER Reboot ...

Page 12: ...information Room No Enter the room number where the ExpressPort adapter is being place Password Enter the password Extra Info Enter any extra information that for the particular room Authentication URL The website for the authentication server Server Port The port number use by the server IP Configuration This page allows you to choose the type of IP Static IP mode When you boot up the ExpressPort...

Page 13: ...ort adapter will not broadcast the SSID Unwelcome PCs will not be able to scan for the SSID of this ExpressPort adapter and they can only associate if they know exactly what is the SSID Wireless Mode To choose to operate the AP or Bridge in 802 11b or 802 11g Both operate in the frequency of 2 4GHz but 802 11g has a faster data rate of 54Mbps as compared to the 11Mbps of 802 11b Radio Frequency Th...

Page 14: ...10 Remember that after every configuration change it is necessary to Click Update on the page Reboot ExpressPort adapter The changes take effect only AFTER Reboot ...

Page 15: ...terval It determines how often the beacon contains a delivery traffic indication message DTIM The DTIM tells power save client devices that a packet is waiting for them Fragment Length Specifies the fragment length Enter a value between 256 and 2346 RTS CTS Threshold Enter a value between 256 and 2346 Short Preamble Enable to use Short Preamble in the Wireless LAN packet headers Most manufacturers...

Page 16: ...lient To configure use the Edit Security Server Settings feature Security Server This is to edit the RADIUS Server PassPhrase Key in the 8 64 character for PSK Cipher Type Choose Auto TKIP or AES Group Key Update Interval Specifies the interval in milliseconds Security Server Settings Non WPA Security RADIUS Server Enter the IP Address of the RADIUS Server for 802 1x authentication purposes This i...

Page 17: ...es in this mode When the ExpressPort adapter is in this mode any Client can associate with it Pre shared Key When chosen the encryption Key is also used for authentication between ExpressPort adapter and Client To configure enter the encryption Key in the Encryption Key field Key Entry Method Choose Hexadecimal if you want to enter the Keys in hexadecimal format Otherwise choose Ascii Text to ente...

Page 18: ...Edit ACL Lists to amend the MAC address table To add a MAC address key in the MAC address in the format 00 11 22 33 44 55 The table display all the MAC address currently allows Protocol Filter AppleTalk Packet Selecting this option will disallow all AppleTalk packets to pass through Filter IPX Packet Selecting this option will disallow all IPX packets to pass through Wireless Isolation Selecting t...

Page 19: ...ood Config later if you have messed up some settings and do not know what was the previous working setting If you have even forgotten the password to get into the configuration pages you would have to do a Factory Reset to ExpressPort adapter Restore settings from the backup Allows you to retrieve the Good Config that you have saved previously Remember that after every configuration change it is n...

Page 20: ... the overall status of the ExpressPort adapter The most common configuration parameters are shown here for a quick look Association Status This page presents an overview of the MAC address of all the Client connected to ExpressPort adapter through Ethernet or wireless ...

Page 21: ...er user cannot be the same as the Username of admin user Firmware Upgrade This page allows you to update the firmware software in ExpressPort adapter New firmwares are issued to improve the performance and add features to the product The new firmware will be name apimg1 1 Save the file in your PC 2 Browse to the file with the name apimg1 3 Click on Upload 4 Reboot the ExpressPort adapter and the p...

Page 22: ... configuration change it is necessary to Click Update on the page Reboot ExpressPort adapter The changes take effect only AFTER Reboot Firmware Version This page presents information of the firmware version of ExpressPort adapter ...

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