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Wireless LAN (WLAN) 

A wireless LAN does not use cable to transmit signals, but rather uses radio or 
infrared to transmit packets through the air. Radio Frequency (RF) and infrared are 
the commonly used types of wireless transmission. Most wireless LANs use spread 
spectrum technology. It offers limited bandwidth, usually under 11Mbps, and users 
share the bandwidth with other devices in the spectrum; however, users can operate 
a spread spectrum device without licensing from the Federal Communications 
Commission (FCC).   

 

Содержание Wireless LAN Access Point

Страница 1: ...User s Guide Wireless LAN Access Point Version 3 10 ...

Страница 2: ...ing the IP Address 12 3 3 Using the SNMP Manager 14 4 Installation under Windows XP 33 4 1 Installing the SNMP Manager application 34 4 2 Setting the IP Address 38 4 3 Using the SNMP Manager 40 5 Technical Specifications 59 Troubleshooting 60 Glossary 61 Product names mentioned herein may be trademarks and or registered trademarks of their respective companies ...

Страница 3: ... accordance with the instruction may cause harmful interference to radio communication However there is no grantee that interference will not occur in a particular installation If this equipment dose 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 ...

Страница 4: ...evice complies with Part 15 of FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference 2 This device must accept any interference that may cause undesired operation Europe R TTE Directive This device complies with the specifications listed below ETS 301 489 1 17 General EMC requirements for Radio equipment ETS 300 328 Technical requirements f...

Страница 5: ...le maintaining seamless uninterrupted access to the network This document describes the steps required for the initial IP address assign and AP configuration The description includes the implementation of the above steps 1 1 Installation Requirements Before you begin installation make sure that you have the following items The Access Point The AC to DC power adapter The Documentation CD You will a...

Страница 6: ...ireless network The most obvious differentiation between Infrastructure wireless network and Ad Hoc wireless network is that the notebooks in Infrastructure wireless network can make use of the resource in the Internet through Access Point STA 3 STA 1 STA 2 Access Point Internet Figure 2 2 Infrastructure wireless network To set up your notebook s network as the type of Ad Hoc or Infrastructure wir...

Страница 7: ...here are two methods of assigning network addresses to computer on a TCP IP network Static IP addressing Dynamic IP addressing DHCP In networks with static IP addressing the network administrator manually assigns an IP address to each computer Once a static IP address is assigned a computer uses the same IP address every time it reboots and logs on to the network You may manually change the IP add...

Страница 8: ...iven Documentation CD and then double click MY Computer icon on desktop In my computer window double click the Pure_AP CD Drive icon Choose SNMP folder and then double click Setup to install SNMP Manager It opens the InstallShield Wizard dialog box as shown next page then click Next ...

Страница 9: ...9 Step 2 Software License Agreement click Yes to accept Step 3 Click Next to install to this folder ...

Страница 10: ... program icons to the Program Folder listed below You may type a new folder name or select one from the Existing Folders list Click Next to continue Step 5 Review settings before copying files click Next to start copying files ...

Страница 11: ...11 Step 6 Start copying files Step 7 Click Finish to complete Setup ...

Страница 12: ...st way to accomplish is to connect the Access Point and the Ethernet station to the same hub You need to check if the station IP address and the Sub net mask are configured properly Also the new IP address for the Access Point must correspond to the Subnet mask Step 2 In my computer window double click the Pure_AP CD Drive icon Choose IP_Config folder and then double click IPConfig to execute Then...

Страница 13: ...S Prompt window and type ping followed by the IP address used in the IP Config The IP address is assigned to the Access Point The Access Point s replies to the ping confirm that the IP address was assigned correctly Step 5 If you get a ping reply then the IP address has been temporarily set In order to set it permanently you need to run SNMP Manager without powering off the Access Point ...

Страница 14: ...14 3 3 Using the SNMP Manager On the Start Menu choose Start Programs SNMP Manager ...

Страница 15: ... appropriate password The default password is public Additionally you have to select the User or Administrator Authority in the Authority combo box User Authority allow you only to view and not to set or save changes to the Access Point Configuration while Administrator Authority allow you to either view or set changes to the Access Point Configuration Then press OK In case of a successful connect...

Страница 16: ... Address Choose this submenu in order to find the Access Points available for connection Select one of the available Access Points and press Connect then appears indicating the IP Address of the selected Access Point and prompting you to select Authority and to write the appropriate password at the community field Then press OK In case of a successful connection to the Access Point the following w...

Страница 17: ... Close Connection AP Terminates the connection with the Access Point You can find and associate with another access point by selecting the Find Access Point after close the connection Download changes When all the desired values of the parameters have been set you are able to download the changes save the changes to the Access Point by selecting this submenu Refresh After changing the access point...

Страница 18: ... Setup menu As soon as the connection has been established you are able to start viewing or setting the Access Point parameters Under the Setup menu there are the following submenus Bridge Under the Bridge submenu there are two options IP configuration By choosing this option the window of appears If DHCP client is not enabled IP Address and IP Mask can be modified ...

Страница 19: ...es the DHCP server If changes are made you need to Download Changes under the File menu in order to save them Bridge IP Configuration Parameters MAC Address Unique 48 bit hard coded Media Access Control address known as the station identifier IP address Network assigned Internet Protocol address of the Access Point IP Mask Four sets of three digits that divides a network into subnet works Filterin...

Страница 20: ...ryption for transmissions between the stations and the Access Point WEP is an authentication algorithm which protects authorized Wireless LAN users against eavesdropping For the 64 bit encryption each key is required to enter 5 Hex digits For example 11 22 33 44 55 66 The 128 bit encryption requires each key to enter 13 Hex digits For example 12 34 56 78 9A BC DE F0 11 22 33 44 55 Note The Authent...

Страница 21: ...21 There are four 13 Hex digit encryption keys available if you select 128 bit WEP Or you can select Disable ...

Страница 22: ...ffer from country to country Select the channel to be used Fragmentation threshold The size at which packets will be fragmented Choose a setting within a range of 256 to 2346 bytes RTS Threshold Minimum packet size to require an RTS Request To Send For packets smaller than this threshold an RTS is not sent and the packet is transmitted directly to the WLAN This is the option for the RTS Threshold ...

Страница 23: ...sic rates to be used among the following options 1 2 5 5 11 Mbps Auto Rate Fall Back When this is enabled the transmission rate is the optimum rate In case of obstacles or interference the system will automatically fall back Regulatory Domain The value of this field is already set and can not be modified ...

Страница 24: ...on you may press the following buttons The Load file button in order to load a file with the MAC addresses that can be associated with the Access Point Authorized MAC Addresses The Download button in order to download the Authorized MAC Address to the Access Point The Get button in order to get from the Access Point the Authorized MAC Addresses Authorization Table example Use Notepad to create Aut...

Страница 25: ...reception of an association request packet and the sender Station s successful association with the Wireless AP Trap Disassociation This trap message is sent when a disassociation notification packet is received from a Station Trap Reset This trap message is sent when the AP resets Trap Setting IP Address with Ping This trap message is sent when the Wireless AP IP address is set with the transmiss...

Страница 26: ...26 Authorization Using this submenu the Administrator can change the passwords which referred to the community field for the User and the Administrator Authority ...

Страница 27: ...e are two submenus Reset Device you can reset the Access Point This action takes place after a user makes configuration changes in order to initiate the changes Restore Default You can restore the factory default values of the Access Point ...

Страница 28: ...tics is given in the following Unicast Transmitted Packets The number of unicast packets successfully transmitted Broadcast transmitted packets The number of broadcast packets transmitted Multicast transmitted packets The number of multicast packets transmitted Unicast Received Packets The number of unicast packets that were successfully received Broadcast Received The number of broadcast packets ...

Страница 29: ... following Received Packets Total Bytes The number of bytes in the frames that were received Total Packs Total number of received packets Packet CRC Errors The number of packets with CRC Errors Transmitted Packets Total Bytes The number of bytes in the frames that were transmitted Total Packs Total number of received transmitted Packet CRC Errors The number of packets with CRC Errors ...

Страница 30: ...30 Traps menu Provides information for trap messages View Record You can see additional information for every Trap Message ...

Страница 31: ...bmenu Associated stations Using this submenu you can view the MAC Addresses of the Associated stations with the Access Point Window menu Under this menu there are the following submenus Cascade All opened windows are arranged on the desktop in a cascade fashion Tile All open windows are visible on the desktop ...

Страница 32: ...32 Help menu Provides on line help about the application ...

Страница 33: ...dress There are two methods of assigning network addresses to computer on a TCP IP network Static IP addressing Dynamic IP addressing DHCP In networks with static IP addressing the network administrator manually assigns an IP address to each computer Once a static IP address is assigned a computer uses the same IP address every time it reboots and logs on to the network You may manually change the...

Страница 34: ...tation CD and then click start menu select MY Computer then click In my computer window double click the Pure_AP CD Drive icon Choose SNMP folder and then double click Setup to install SNMP Manager It opens the InstallShield Wizard dialog box as shown next page then click Next ...

Страница 35: ...35 Step 2 Software License Agreement click Yes to accept Step 3 Click Next to install to this folder ...

Страница 36: ... program icons to the Program Folder listed below You may type a new folder name or select one from the Existing Folders list Click Next to continue Step 5 Review settings before copying files click Next to start copying files ...

Страница 37: ...37 Step 6 Start copying files Step 7 Click Finish to complete Setup ...

Страница 38: ...st way to accomplish is to connect the Access Point and the Ethernet station to the same hub You need to check if the station IP address and the Sub net mask are configured properly Also the new IP address for the Access Point must correspond to the Subnet mask Step 2 In my computer window double click the Pure_AP CD Drive icon Choose IP_Config folder and then double click IPConfig to execute Then...

Страница 39: ...S Prompt window and type ping followed by the IP address used in the IP Config The IP address is assigned to the Access Point The Access Point s replies to the ping confirm that the IP address was assigned correctly Step 5 If you get a ping reply then the IP address has been temporarily set In order to set it permanently you need to run SNMP Manager without powering off the Access Point ...

Страница 40: ...40 4 3 Using the SNMP Manager Click start menu select Wireless LAN Utilities Æ AP Configuration Æ AP Configuration then click ...

Страница 41: ... appropriate password The default password is public Additionally you have to select the User or Administrator Authority in the Authority combo box User Authority allow you only to view and not to set or save changes to the Access Point Configuration while Administrator Authority allow you to either view or set changes to the Access Point Configuration Then press OK In case of a successful connect...

Страница 42: ... Address Choose this submenu in order to find the Access Points available for connection Select one of the available Access Points and press Connect then appears indicating the IP Address of the selected Access Point and prompting you to select Authority and to write the appropriate password at the community field Then press OK In case of a successful connection to the Access Point the following w...

Страница 43: ... Close Connection AP Terminates the connection with the Access Point You can find and associate with another access point by selecting the Find Access Point after close the connection Download changes When all the desired values of the parameters have been set you are able to download the changes save the changes to the Access Point by selecting this submenu Refresh After changing the access point...

Страница 44: ... Setup menu As soon as the connection has been established you are able to start viewing or setting the Access Point parameters Under the Setup menu there are the following submenus Bridge Under the Bridge submenu there are two options IP configuration By choosing this option the window of appears If DHCP client is not enabled IP Address and IP Mask can be modified ...

Страница 45: ...es the DHCP server If changes are made you need to Download Changes under the File menu in order to save them Bridge IP Configuration Parameters MAC Address Unique 48 bit hard coded Media Access Control address known as the station identifier IP address Network assigned Internet Protocol address of the Access Point IP Mask Four sets of three digits that divides a network into subnet works Filterin...

Страница 46: ...ryption for transmissions between the stations and the Access Point WEP is an authentication algorithm which protects authorized Wireless LAN users against eavesdropping For the 64 bit encryption each key is required to enter 5 Hex digits For example 11 22 33 44 55 66 The 128 bit encryption requires each key to enter 13 Hex digits For example 12 34 56 78 9A BC DE F0 11 22 33 44 55 Note The Authent...

Страница 47: ...47 There are four 13 Hex digit encryption keys available if you select 128 bit WEP Or you can select Disable ...

Страница 48: ...ffer from country to country Select the channel to be used Fragmentation threshold The size at which packets will be fragmented Choose a setting within a range of 256 to 2346 bytes RTS Threshold Minimum packet size to require an RTS Request To Send For packets smaller than this threshold an RTS is not sent and the packet is transmitted directly to the WLAN This is the option for the RTS Threshold ...

Страница 49: ...sic rates to be used among the following options 1 2 5 5 11 Mbps Auto Rate Fall Back When this is enabled the transmission rate is the optimum rate In case of obstacles or interference the system will automatically fall back Regulatory Domain The value of this field is already set and can not be modified ...

Страница 50: ...on you may press the following buttons The Load file button in order to load a file with the MAC addresses that can be associated with the Access Point Authorized MAC Addresses The Download button in order to download the Authorized MAC Address to the Access Point The Get button in order to get from the Access Point the Authorized MAC Addresses Authorization Table example Use Notepad to create Aut...

Страница 51: ...reception of an association request packet and the sender Station s successful association with the Wireless AP Trap Disassociation This trap message is sent when a disassociation notification packet is received from a Station Trap Reset This trap message is sent when the AP resets Trap Setting IP Address with Ping This trap message is sent when the Wireless AP IP address is set with the transmiss...

Страница 52: ...52 Authorization Using this submenu the Administrator can change the passwords which referred to the community field for the User and the Administrator Authority ...

Страница 53: ...e are two submenus Reset Device you can reset the Access Point This action takes place after a user makes configuration changes in order to initiate the changes Restore Default You can restore the factory default values of the Access Point ...

Страница 54: ...tics is given in the following Unicast Transmitted Packets The number of unicast packets successfully transmitted Broadcast transmitted packets The number of broadcast packets transmitted Multicast transmitted packets The number of multicast packets transmitted Unicast Received Packets The number of unicast packets that were successfully received Broadcast Received The number of broadcast packets ...

Страница 55: ... following Received Packets Total Bytes The number of bytes in the frames that were received Total Packs Total number of received packets Packet CRC Errors The number of packets with CRC Errors Transmitted Packets Total Bytes The number of bytes in the frames that were transmitted Total Packs Total number of received transmitted Packet CRC Errors The number of packets with CRC Errors ...

Страница 56: ...56 Traps menu Provides information for trap messages View Record You can see additional information for every Trap Message ...

Страница 57: ...bmenu Associated stations Using this submenu you can view the MAC Addresses of the Associated stations with the Access Point Window menu Under this menu there are the following submenus Cascade All opened windows are arranged on the desktop in a cascade fashion Tile All open windows are visible on the desktop ...

Страница 58: ...58 Help menu Provides on line help about the application ...

Страница 59: ...Japan 13 France 4 Modulation 1 Mbps DBPSK 2 Mbps DQPSK 5 5 Mbps CCK 11 Mbps CCK Ethernet Interface 10 100Base T RJ 45 Power AC 100 240V 50 60 Hz to 5VDC 1A converter incl Mobility Seamless roaming across cell boundaries Security IEEE standard WEP 40 bit 128 bit Environmental 0 C to 55 C operating 95 humidity Network Management SNMP agent with support for MIB II and IEEE 802 11 MIB LED Indicators P...

Страница 60: ...address 192 168 0 1 If this address does not belong to the Sub Network of the configuring terminal then you would execute IPConfig exe from attached CD to modify it The MAC address could be found on the button side Symptom After configuration is done but there is no any client associating with AP Possible Remedy 1 Make sure there is any properly operating client in the serving area 2 Verify the cl...

Страница 61: ...o clients on the network DHCP is used for Dynamic IP Addressing and requires a dedicated DHCP server on the network Direct Sequence Spread Spectrum This is the method the wireless cards use to transmit data over the frequency spectrum The other method is frequency hopping Direct sequence spreads the data over one frequency range channel while frequency hopping jumps from one narrow frequency band ...

Страница 62: ... particular is being made available worldwide This presents a truly revolutionary opportunity to place convenient high speed wireless capabilities in the hands of users around the globe Local Area Network LAN A LAN is a group of computers each equipped with the appropriate network adapter card connected by cable air that share applications data and peripherals All connections are made via cable or...

Страница 63: ...n as a management information block Static IP Addressing A method of assigning IP addresses to clients on the network In networks with Static IP address the network administrator manually assigns an IP address to each computer Once a Static IP address is assigned a computer uses the same IP address every time it reboots and logs on to the network unless it is manually changed Transmission Control ...

Страница 64: ...quency RF and infrared are the commonly used types of wireless transmission Most wireless LANs use spread spectrum technology It offers limited bandwidth usually under 11Mbps and users share the bandwidth with other devices in the spectrum however users can operate a spread spectrum device without licensing from the Federal Communications Commission FCC ...

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