LG ELECTRONICS LW1100AP WLAN Access Point User Manual APManual

LG Electronics, Inc. WLAN Access Point APManual

Updated Manual

Page 1 of 50 Wireless LAN Access Point User’s Guide LW1100AP Series
Page 2 of 50Contents Chapter 1 Introduction To The Wireless LAN 1.1 What’s the Wireless LAN? …………………………………… 5 1.2 Wireless LAN Standard and Structure…………………………6 Chapter 2 Setup GoldStream Access Point …………………. 13 2.1 Before You Begin Installation ……………………………… ….13 2.2 Installing The LG LW1100AP Series Access Point …………………………………….15 Adjust the antennas …………………………………………15 Ethernet Cable Connection …………………………………16 Connect The Power Pack …………………………………..17 Connect Serial Cable ………………………………………..18 Open Terminal Program …………………………………….19 Configuration Change ……………………………………….21 2.3 Verifying the Operation of the LG Access Point ………. 28 Chapter 3 Access Point Management……………………….……..30 3.1 Starting a Configuration Tool………………………………………31 Access Point Connection. ……………………………………32 Access Point Configuration Window..……………………….33 Terminal Window for Diagnosis ……………………………..37 Firmware Upgrade Window ………………..………………..38 Firmware Upgrade Via Internet ……………………………..39 Firmware Upgrade Via Local Disk…………………………..41 Access Point Detail Control………………………………….42 3.2 Setting Bridge Mode ……………………………………………..43 Chapter 4 Troubleshooting …………………………………………..45
Page 3 of 50Appendix Appendix A Cell Planning (Radio Range) ……………………………..46 Appendix B Technical Specification ……………………………………48 Appendix C Channel Allocation ……………………………..………….50
Page 4 of 50THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR LG REPRESENTATIVE FOR A COPY. The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense. The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not installed in accordance with LG’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. Modifying the equipment without LG’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television communications at your own expense. You can determine whether your equipment is causing interference by turning it off. If the interference stops, the LG equipment or one of its peripheral devices probably caused it. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures: • Turn the television or radio antenna until the interference stops. • Move the equipment to one side or the other of the television or radio. • Move the equipment farther away from the television or radio. • Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radios are on circuits controlled by different circuit breakers or fuses.)
Page 5 of 50 Modifications to this product not authorized by LG Electronics Inc. could void the FCC approval and negate your authority to operate the product. 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 20 centimeters between the radiator and your body. Important Note : LW1100AP Antenna type is unique reverse turn SMA connector, Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. LG AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL LG OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF LG OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. LG LW1100AP, LG logo are registered trademarks of LG Electronics Inc. or its affiliates in the Korea, U.S. and certain other countries. All other trademarks mentioned in this document are the property of their respective owners. The use of the word partner does not imply a partnership relationship between LG and any of its resellers. The LG Access Point User ’s Guide Copyright© 2001, LG Electronics Inc. All rights reserved.
Page 6 of 50Chapter 1 Introduction To The Wireless LAN A wireless LAN (WLAN) is a flexible data communication system implemented as an extension to, or as an alternative for, a wired LAN within a building or campus. Using electromagnetic waves, WLANs transmit and receive data over the air, minimizing the need for wired connections. Thus, WLANs combine data connectivity with user mobility, and, through simplified configuration, enable movable LANs. WLANs have gained strong popularity in a number of vertical markets, including the health-care, retail, manufacturing, warehousing, and academic arenas. These industries have profited from the productivity gains of using hand-held terminals and notebook computers to transmit real-time information to centralized hosts for processing. Today WLANs are becoming more widely recognized as a general-purpose connectivity alternative for a broad range of business customers. 1.1 What’s Wireless LAN? Wireless LANs use electromagnetic airwaves (radio and infrared) to communicate information from one point to another without relying on any physical connection. Radio waves are often referred to as radio carriers because they simply perform the function of delivering energy to a remote receiver. The data being transmitted is superimposed on the radio carrier so that it can be accurately extracted at the receiving end. This is generally referred to as modulation of the carrier by the information being transmitted. Once data is superimposed (modulated) onto the radio carrier, the radio signal occupies more than a single frequency, since the frequency or bit rate of the modulating information adds to the carrier. Multiple radio carriers can exist in the same space at the same time without interfering with each other if the radio waves are transmitted on different radio frequencies. To extract data, a radio receiver tunes in (or selects) one radio frequency while rejecting all other radio signals on different frequencies. In a typical WLAN configuration, a transmitter/receiver (transceiver) device, called an access point, connects to the wired network from a fixed location using standard Ethernet cable. At a minimum, the access point receives, buffers, and transmits data between the WLAN and the wired network infrastructure. A single access point can support a small group of users and can function within a range of less than one hundred to several hundred feet. The access point (or the antenna attached to the access point)
Page 7 of 50is usually mounted high but may be mounted essentially anywhere that is practical as long as the desired radio coverage is obtained. End users access the WLAN through wireless LAN adapters, which are implemented as PC cards in notebook computers, or use PCI adapters in desktop computers. WLAN adapters provide an interface between the client network operating system (NOS) and the airwaves (via an antenna). The nature of the wireless connection is transparent to the NOS. 1.2 Wireless LAN Standard and Structure ¦ Wireless LAN Standard – IEEE802.11b The widespread acceptance of WLANs depends on industry standardization to ensure product compatibility and reliability among the various manufacturers. The Institute of Electrical and Electronics Engineers (IEEE) ratified the original 802.11 specifications in 1997 as the standard for wireless LANs. That version of 802.11 provides for 1 Mbps and 2 Mbps data rates and a set of fundamental signaling methods and other services. The most critical issue affecting WLAN demand has been limited throughput. The data rates supported by the original 802.11 standard are too slow to support most general business requirements and have slowed adoption of WLANs. Recognizing the critical need to support higher data-transmission rates, the IEEE recently ratified the 802.11b standard (also known as 802.11 High Rate) for transmissions of up to 11 Mbps. With 802.11b, WLANs will be able to achieve wireless performance and throughput comparable to wired Ethernet. Outside of the standards bodies, wireless industry leaders have united to form the Wire-less Ethernet Compatibility Alliance (WECA). WECA’s mission is to certify cross-vendor interoperability and compatibility of IEEE 802.11b wireless networking products and to promote that standard for the enterprise, the small business, and the home. Members include WLAN semiconductor manufacturers, WLAN providers, computer system vendors, and software makers. ¦ Wireless LAN Network Equipment 802.11 defines two pieces of equipment, a wireless station, which is usually a PC equipped with a wireless network interface card (NIC), and an access point (AP), which acts as a bridge between the wireless and wired networks. An access point usually consists of a radio, a wired network interface (e.g., 802.3), and bridging software conforming to the 802.1d bridging standard. The access point acts as the base station
Page 8 of 50for the wireless network, aggregating access for multiple wireless stations onto the wired network. Wireless end stations can be 802.11 PC Card, PCI. ¦ Wireless LAN Network Configuration The 802.11 standard define two modes: infrastructure mode and ad hoc mode (or independent or peer-to-peer). l Ad Hoc Mode Ad hoc mode (also called peer-to-peer mode or an Independent Basic Service Set, or IBSS) is simply a set of 802.11 wireless stations that communicate directly with one another without using an access point or any connection to a wired network. This mode is useful for quickly and easily setting up a wireless network anywhere that a wireless infrastructure does not exist or is not required for services, such as a hotel room, convention center, or airport, or where access to the wired network is barred (such as for consultants at a client site). Figure 1. Ad Hoc Mode l Infrastructure Mode In infrastructure mode, the wireless network consists of at least one access point connected to the wired network infrastructure and a set of wireless end stations. This configuration is called a Basic Service Set (BSS). An Extended Service Set (ESS) is a set of two or more BSSs forming a single sub-network. Independent Basic Service Set (IBSS)
Page 9 of 50Since most corporate WLANs require access to the wired LAN for services (file servers, printers, Inter-net links) they will operate in infrastructure mode. Figure 2. Infrastructure Mode ¦ Roaming Wireless communication is limited by how far signals carry for given power output. WLANs use cells, called microcells, similar to the cellular telephone system to extend the range of wireless connectivity. At any point in time, a mobile PC equipped with a WLAN adapter is associated with a single access point and its microcell, or area of coverage. Individual microcells overlap to allow continuous communication within wired network. They handle low power signals and “hand off” users as they roam through a given geographic area. The 802.11 MAC layer is responsible for how a client associates with an access point. When an 802.11 client enters the range of one or more APs, it chooses an access point to associate with (also called joining a Basic Service Set), based on signal strength and observed packet error rates. Once accepted by the access point, the client tunes to the radio channel to which the access point is set. Periodically it surveys all 802.11 channels Distribution System (DS) Service Set (SS) – Multiple Access Point (AP) Ethernet (802.3)
Page 10 of 50in order to assess whether a different access point would provide it with better performance characteristics. If it determines that this is the case, it reassociates with the new access point, tuning to the radio channel to which that access point is set. Reassociation usually occurs because the wireless station has physically moved away from the original access point, causing the signal to weaken. In other cases, Reassociation occurs due to a change in radio characteristics in the building, or due simply to high network traffic on the original access point. In the latter case this function is known as “load balancing,” since its primary function is to distribute the total WLAN load most efficiently across the available wireless infrastructure. This process of dynamically associating and reassociating with APs allows network managers to set up WLANs with very broad coverage by creating a series of overlapping 802.11b cells throughout a building or across a campus. To be successful, the IT manager ideally will employ “channel reuse,” taking care to set up each access point on an 802.11 DSSS channel that does not overlap with a channel used by a neighboring access point. Figure 3. Roaming Backbone Network Access Point (AP) Inter-Cell Roaming
Page 11 of 50¦ BSS, ESS and SS ID The basic service set (BSS) is the basic building block of WLAN network. Minimum WLAN BSS may be consist of only two stations. Using access point (AP) and network distribution systems (DS), WLAN service set can be extended arbitrary size – extended service set (ESS). Each service set has its network ID (SSID). All the service sets within an ESS network can have same service ID so that the ESS can support inter-cell ROAMING.
Page 12 of 50 Figure 4. SSID and Roaming Backbone Network AP #`2 SS ID = LG ROAMING AP #`1 SS ID = LG AP #`3 SSID =LWAP ESS BSS Backbone Network Re-Configuration Required
Page 13 of 50Chapter 2 Setup LG Access Point 2.1 Before You Begin Installation The LG LW1100AP Series Access Point is a wireless LAN transceiver that can act as the center point of a stand-alone wireless LAN network or as the connection point between wireless and wired networks. In multiple installations, the roaming functionality provided by multiple Access Points allows wireless users to move freely throughout the facility while maintaining seamless, uninterrupted access to the network. The Access Point supports Access Point management software. The system settings are contained on the Access Point's firmware. Before setting up your Access Point, ask your network system administrator for the following information: — If your network does not use a DHCP server, you need an IP (Internet Protocol) address for the Access Point. If your network uses a DHCP server, an IP address will be assigned automatically. Each station or device on your network must have a unique IP address. — If there is some Access Points are already installed, SSID and channel allocation strategy. — WEP key allocation Caution You should configure the Access Point before mounting it on a pole or a ceiling. Some configuration steps, such as communicating with the Access Point through a serial cable, may be difficult if the Access Point is inaccessible. Before you begin installation, make sure that you have the following items: — The LG LW1100AP Series Access Point
Page 14 of 50— The Access Point power supply — The LG LW1100AP Series Installation CD If any of these items are missing from the package, contact your Access Point supplier. You will also need: — A computer that is connected to the same network as the Access Point — A 9-pin, straight-through, male-to-female serial cable
Page 15 of 502.2 Installing The LG LW1100AP Series Access Point Follow the instructions below to install the Access Point. For maximum range, make sure the antennas on your Access Point straight up or straight down, no matter where your Access Point is mounted. If you keep your Access Point on a table or a desk, turn the antennas so they point straight up. If you mount your Access Point on a wall or a pole, turn the antennas so they are vertical, even though the Access Point is on its side. If you mount your Access Point on the ceiling, turn the antennas so they point straight down. Antenna configurations can be varied depending on the Access Point model, cell coverage or cell plan. STEP 1 Adjust the antennas
Page 16 of 50 Connect the Ethernet cable from your wired LAN to your Access Point. Make sure the unit is not powered up when you connect your network cable. STEP 2 Ethernet Cable Connection
Page 17 of 50 Plug the Power Pack into a wall outlet or a power strip, and plug the connector into the power receptacle on the back of the Access Point. All three indicators on top of the access point will be bright green. During normal operation, the indicators will be bright green. If the indicators does not display a solid color or blink, see the “Top Panel Indicator Descriptions” in this manual. Caution If you have already installed LG LW1100 series client card, you can easily configure Access Point through air connection between your computer and Access Point. You may skip next step and go to Access Point Management section. STEP 3 Connect The Power Pack
Page 18 of 50 If you have a DHCP server, the server automatically assigns an IP address to the Access Point when you connect it to your network. To use the Access Point’s management system, you need to find out the assigned IP address. If you have access to the DHCP server, you can look on the server to find the IP address assigned to the Access Point. If you cannot access the DHCP server, use a 9-pin, straight-through, male -to -female serial cable to connect the COM 1 or 2 port on your computer to the RS-232 on the back of the access point. After you find the assigned IP address, you can remove this cable. You might need the cable again if you need to update the Access Point’s configuration in the future. STEP 4 Connect Serial Cable STEP 5 Open Terminal Program
Page 19 of 50Open the HyperTerminal program on the workstation attached to the Access Point. These instructions describe HyperTerminal for example, but you can use any terminal-emulation program to communicate with the Access Point. This window appears: Type a name for the connection and click OK. The Connect To window appears: Choose the port on your computer to which the serial cable is connected. Click OK. The port settings window appears:
Page 20 of 50 Set Bits per second (baud rate) to 19200, Data bits to 8, Parity to None, Stop bits to 1, and Flow control to None. Click OK. The Setup screen appears in the HyperTerminal window. If the text does not appear immediately, press Enter. If the Access Point has no problem, you can find prompt on the terminal program’s display box: Type disconfig and press Enter to see current default settings of Access Point. Make a note of the SSID, Channel number and IP address. LG Access Point has a default IP; 100.100.100.100
Page 21 of 50The other options that are displayed can be ignored in this chapter and there will be detail explanation next Access Point Management section Type setconfig and press Enter to change current default configuration settings. Using this command, you can change Access Point’s SSID, Channel number, IP address, MAC address and WEP key enable/disable. After type setconfig command, whenever you press Enter key, there occur changeable Access Point options and you can select or edit what you wanted. Refer the next example. STEP 5 Configuration Change
Page 22 of 50 The SSID value is case sensitive and can enter up to 32 characters without banks. Available channel numbers varies from country. Refer to the Appendix Channel chapter. In addition to this, it there is Access Points that have already installed in the neighborhood of your Access Point, take a cautious attitude in selecting channel number. Otherwise, by selecting too close channel number with your neighbor Access Point, raise channel interference problems. This problem can degrade wireless LAN air link quality seriously. In order to avoid this problem, select a longest channel number with your neighbor Access Point. 8RETURN8RETURN
Page 23 of 50 If you use LG LW1100AP as a normal Access Point, select ‘1’. Otherwise, you use it as a point-to-point transmission device you should select ‘2’ or ‘3’. About this usage, detail explanation will be followed next chapter. If you know what IP address should be set to your Access Point then write it in this step. Otherwise, if you do not know what IP can be used, ask for your network administrator about available IP address. In this example, the IP address 211.189.201.251 is a default IP address that is assigned by LG Systems. Caution If you have a DHCP server, this step can skip. If you have a DHCP server, your Access Point’s IP address is assigned automatically. 8RETURN8RETURN
Page 24 of 50 WEP stands for Wired Equivalent Privacy. WEP is an encryption scheme that provides the secure wireless data communications to the users. WEP uses a 64bit-key or 128bit-key to control the network access. In order to do secure communication over the wireless LAN network, enable WEP function. If you enable WEP function, select one of four WEP default key number. You can choose any one number from 1 to 4. And then, there occur Exclude Unencrypted question. This question asks you whether you allow a client that does not use WEP function. Next question is WEP Key Generation Mode. There are two ways to generate the WEP key. One is by entering any text in the Passphrase. The other way is by entering Key value directly from the keyboard. In this case, you can insert any character string. As the wireless channel is more prone to the illegal access, WEP provides the users
Page 25 of 50safe wireless LAN network access. But if you enable WEP function, it will degrade transmission throughput because it take some time to encryption/decryption. These options are provided for wireless LAN expert only, so if you does not have deep information about wireless LAN air interface specifications, do not change default options. More detail information about how to change detail configuration will be explained in Access Point Management section. Until now, you have completed all the setup options. Press Enter key. On the terminal screen, options lists that you have selected will be displayed. After confirm all the changed options, if there is no change, press y, and otherwise press n.
Page 26 of 50 If you press y then LG Access Point setup configuration will be complete and the setup program will update changed configuration in the memory. Caution During updating configuration data, there can be display flash memory write error message. In this case, call for help LG Access Point distributor.
Page 27 of 50
Page 28 of 502.3 Verifying the Operation of the LG Access Point The AP runs a series of self-tests on power-up and reports status using its LEDs. When power-up begins, the following occurs: a. The firmware begins running diagnostics, initializes minimal hardware. b. After the firmware completes its diagnostics and hardware initialization. The diagnostics then checks the RF module to see whether it is properly runs in the AP. And then, the firmware downloads RF module operating program. c. Upon successful completion of the diagnostics and program download, After Radio Link LED turns on and then turns off for a few seconds all the LED display steady bright. The diagnostics take approximately 30 seconds to complete after power-up. Upon successful completion of the diagnostics, the LED pattern shown in below figure is displayed. If the AP fails to display the proper LED pattern, verify that you have correctly installed the AP. If the AP still fails to display the LED pattern, refer to troubleshooting section.
Page 29 of 50 LED Name Operational State PWR On (Green) = power is okay Orange = AP Functional Fail Occur WLAN ON (Green) = Air link status okay Blink = Air link or RF module has some problems. 10/100M Blink = Ethernet interface okay and the AP transfers data.
Page 30 of 50Chapter 3 Access Point Management This chapter describes the pages in the Access Point’s management system. Before installing the LG Access Point Manager, first select a computer that meets these requirements: • Operating system is Windows 95, Windows 98 and Windows 2000, Windows ME or Windows NT4.0 later. • The computer is connected to the Access Point’s wired or wireless LAN. To install the LG Access Point Manager, insert the LG Access Point setup CD in the PC and run SETUP (this can be done from the Windows Explorer). Follow the Setup instructions. If you have a previous version of the Access Point Manager, install the Access Point Manager on the same computer folder. The setup process automatically upgrades the existing software and keeps your existing configuration files. The LG Access Point Manager is included in the LG Access Point kit. The AP Manager can be used as a setup/configuration tool for new A ccess Points and as a management tool to assist the ongoing management and support of LG wireless LANs. The LG Access Point Manager has the following features: • Ability to manage multiple APs remotely, including changing parameters in a wireless network with a single command • Ability to view AP parameters, such as AP statistics, AP firmware version number, MAC addresses • Integrity checking for many wireless parameter changes • Integrated with a BooTP/TFTP application for simple AP firmware upgrades, also called flash upgrades.
Page 31 of 503.1 Starting a Configuration Tool To modify Access Point parameters after installing the Access Point, you need to use a device connected to the console port or the LG Access Point Manager. The former was explained in the above chapter. The following sections describe how to configure the Access Point using Access Point Manager tool. If you have installed the LG Access Point Manager on a computer, select: Program Files Ú LG Electronics Ú A P Manager Ú AccessPointManager.exe Or you can simply click the AccessPointManager icon on the windows screen. The program starts with the following screen.
Page 32 of 50 All the Access Points of LG Electronics Inc. have the same default IP address; 211.189.201.251. If you install the Access Point for the first time, you should type LG Access Point’s default IP on the above IP address input dialog box and then press CONNECT button. If the Access Point has no problem and wire/wireless link connected without problem, A dialog box pop up that the Access Point Manager program connected to the Access Point addressed by IP. Otherwise, If the Access Point Manager program cannot find the Access Point then following message is displayed and stop search process. If the Access Point connection fails, verify that you have correctly installed the AP. If the AP still fails to connect, refer to troubleshooting chapter. Access Point Connection
Page 33 of 50 Once, the Access Point Manager program successfully connected to an Access Point, all the configuration information of it are displayed Access Point Manager program’s configuration tab window. • Type: LG’s Access Point has multiple functions; Wireless LAN Access Point, Wireless LAN Bridge for point-to-point transmission. So, this dialog box displays current function mode. Default type value is Access Point mode. • IP Adfffdress: This field allows the assignment or change of the Internet Protocol (IP) address of a station. The significance of such a change depends on whether or not Access Point Configuration Window
Page 34 of 50DHCP is enabled for the network. If DHCP is not enabled, this field is the IP address. If DHCP is enabled, this field will only provide the IP address if no DHCP server responds with an IP address for the Access Point. LG’s Access Point has a default IP address - 100.100.100.100. It is highly recommended that you change the IP address from the default only if you do not use DHCP server. You should not use the default IP address except for the first Access Point setup. • SSID: The SSID is the network name for your Access Point. All Access Points on the same LAN must be set with the same SSID in order to support inter-cell roaming. If the Access Point is configured to communicate with wireless clients and the Secure Access parameter is enabled, each client must be configured with the same SSID. If Secure Access is not enabled, clients can be configured with the Access Point’s wireless network name, ANY (all uppercase), or keep the Wireless Network Name field blank. • Default Channel: The channel sets the center frequency of the Access Point. In a LAN-to-LAN configuration, the Access Points need to be set to the same channel. In a wireless client configuration with multiple Access Points, adjacent Access Points should be set to different channels that are at least 5 channels apart recommended. For example, in a configuration with 3 Access Points, set the channels to 1, 6, and 11. Note that some countries only support a limited number of channels. Refer to the Appendix Channel section. The Access Point does not allow you to set channels outside your country’s band. Wireless clients with LG PC/PCI Cards automatically switch to the Access Point’s channel when roaming between Access Points in a wireless network. • Slave Mac Address: When the Access Point functions as a wireless LAN bridge master, it can define the slave bridge’s MAC address. • Ethernet Mac Address: The Media Access Control (MAC) address is a unique serial number assigned to a device by the LG Electronics. • WEP: WEP stands for Wired Equivalent Privacy. WEP is an encryption scheme that
Page 35 of 50provides the secure wireless data communications to the users. WEP uses a 64bit-key or 128bit-key to control the network access. In order to do secure communication over the wireless LAN network, enable WEP function. Use this setting to choose whether clients must use data encryption when communicating with this Access Point. • WEP Exclude: WEP Exclude option makes the Access Point service a client that does not use WEP function. • WEP Generation: There are two ways to generate the WEP key. One is by entering any text in the Passphrase. The other way is by entering Key value directly from the keyboard. In this case, you can insert any character string. • Passphrase: This field allows you to enter any character string to generate Key value. • Key 1, 2, 3 and 4: These fields allow you to enter the WEP keys. Type ten hexadecimal digits (any combination of 0-9, a-f, or A-F) for 64-bit WEP keys. To protect WEP key security, existing WEP keys do not appear in the entry fields. You can write over existing keys, but you cannot edit or delete them. Caution The WEP keys for your network must be set up exactly the same on your Access Points and your PC cards. The same value must be assigned to Key 1 on both the Access Point and the PC cards, the same value must be assigned to Key 2 on both the Access Point and the PC cards, and so on, for all four WEP keys. For example, if you set WEP Key 3 on your Access Point to 0987654321 and select it as the active key, you must also set WEP Key 3 on the PC cards to the same value and select Key 3 as the active key. • WEP Default Key: You can choose one of four WEP Keys that have been generated above step.
Page 36 of 50• Link Quality: When the Access Point functions as a wireless LAN bridge, it shows link quality between Master Bridge and Slave Bridge • Signal Strength: When the Access Point functions as a wireless LAN bridge, it shows signal strength between Master Bridge and Slave Bridge • Apply Changes: After entering new values for settings, click Apply Changes button to activate the new settings. • Undo Changes: If you want to restore Access Point configuration, press this button.
Page 37 of 50 The Diagnosis Tab provides the same function as terminal emulator programs, just like HyperTerminal program explained above section. And you can do same things as you use terminal program. Refer above Open Terminal Program section. Terminal Window for Diagnosis
Page 38 of 50 Use this page to simultaneously update the Access Point’s system firmware via your local disk or Internet. After making firmware updates on this page, the Access Point will automatically be rebooted to activate the new firmware. Before you update Access Point’s firmware, you could check current Access Point’s firmware version through the F/W Upgrade window. The firmware can be updated through two ways; one is via Internet and the other is via local disk or file server. Firmware Upgrade Window
Page 39 of 50 In order to upgrade Access Point firmware via Internet, click the Internet selection button. If you know an URL address that supply Access Point’s latest firmware version then enter the address in the dialog box. Otherwise click Default URL button. The Default URL addresses LG Electronics Internet homepage that supports latest Access Point firmware version. If you have defined URL address, press Start button so that the firmware can be transferred to your local disk (Program File Ò LG Electronics Ò AP Manager). During the firmware down load, if there is an error or file transfer failed then an error message will be displayed. After complete the firmware downloading, the Manager performs Access Point firmware upgrade process. This process can be monitored just like as firmware download process. Firmware Upgrade Via Internet
Page 40 of 50 If the firmware download processes finished successfully, download completed message is displayed and then Access Point Manager program tries to make a new connection with the Access Point. Meanwhile, the Access Point that have received new firmware version go on self restarts process. In order to upgrade Access Point firmware via local disk, click the Local Disk button. In Firmware Upgrade Via Local Disk
Page 41 of 50order to use this option, you should have latest firmware version in your local disk already. After you click Browse button, select the firmware that you want to update. In this time, you should take special attention in opening file so that not to open wrong file or firmware version. After confirm the file name, click the Start button. The other processes from this stage are the same as those of the Internet.
Page 42 of 50 These windows is provided for wireless LAN expert only, so if you does not have deep information about wireless LAN air interface specifications, do not change default options. More detail information about how to change detail configuration will be explained in Access Point Management section. • Beacon Period: The amount of time between beacons. • DTIM Period: Access Point Detail Control
Page 43 of 50Other items will be explained later vision of this document. 3.2 Setting Bridge Mode You can connect two separate LANs over a wireless link by configuring two LG Access Points to communicate with each other. This is called a LAN-to-LAN connection. Two APs in different buildings using an outdoor antenna to connect the LANs in those buildings can be deployed. To configure two APs to communicate with each other in a LAN-to-LAN configuration, perform the following tasks: 1) Get the wireless MAC address of the remote AP. You can see the wireless address via the AP Manager or console device, as described in “Access Point Configuration Window“ section. The wireless MAC address is NOT the same as the wired MAC address printed on the front of the AP. 2) Set the Bridge Mode to LAN-to-LAN, as described in above “Access Point Configuration Window section’s Type item. 3) Make sure that the APs use the same channel. To change the AP channel, see “Access Point Configuration Window“ section. The AP provides the following bridging services: • Store-and-forward capability The AP receives, checks, and transmits frames to other LANs, enabling the configuration of extended LANs. • Frame filtering based on address Using the address database and the source and destination addresses from incoming frames, the AP isolates the traffic that should not be allowed on other LANs. This action reduces the total data traffic on an extended LAN by not forwarding the packets that have local destination addresses or packets that are not allowed to forward. This increases bandwidth efficiency.
Page 44 of 50• Data Link layer relay The AP operates at the Data Link layer of the Open System Interconnection (OSI) model. Operation at this layer makes the AP transparent to the protocols that use the LAN connectivity service. This protocol transparency is a key factor in the extended LAN service.
Page 45 of 50Chapter 4 Troubleshooting T.B.D.
Page 46 of 50Appendix Appendix A Cell Planning (Radio Range) This section provides general guidelines on factors that influence network performance Cell Site Survey Because of differences in component configuration, placement and physical environment, every network application is a unique installation. Before installing the system, users should perform a site survey to determine the optimum utilization of networking components and to maximize range, coverage and network performance. Here are some operating and environmental conditions you should consider: • Data Rate s Radio signal sensitivity and range are inversely proportional to data bit rates. The maximum radio range is achieved at the lowest workable data rate. There will be a decrease in receiver threshold sensitivity as the radio data rate increases. • Antenna Type and Placement (PCI card only) Proper antenna configuration is a critical factor in maximizing radio range. As a general guide, range increases in proportion to antenna height. For a detailed explanation of antenna types and configurations along with guidelines on selecting antennas for specific environments, see the documentation that comes with your antenna. • Physical Environments Clear or open areas provide better radio range than closed or filled areas. Also, the less cluttered the work environment, the greater the range. • Obstructions A physical obstruction such as metal shelving or a steel pillar can hinder the performance of the client adapter. Avoid locating the computing device in a location where there is a metal barrier between the sending and receiving antennas. • Building Materials
Page 47 of 50Radio penetration is greatly influenced by the building material used in construction. For example, drywall construction allows greater range than concrete blocks. Metal or steel construction is a barrier to radio signals. Enhancing Coverage The system architecture options of the wireless station and LG Access Points provide for a variety of coverage alternatives and flexibility. The system can be designed to provide a wide coverage area with minimal overlap or coverage with heavy overlap. The latter improves system performance and protection against downtime in the event of a component failure. By arranging the LG Access Points so the overlap in coverage area is minimized, a large area can be covered with minimal system cost. The total bandwidth available to each mobile station will depend on the amount of data each mobile station desires to transfer and the number of stations located in each cell. Seamless roaming is supported as a mobile station moves in and out of range of each LG Access Point, thereby maintaining a constant connection to the wired LAN. Each device in the radio network must be configured with the same Service Set Identifier (SSID) to provide the roaming capability. Multiple systems can operate in the same vicinity. The architecture provides multiple channels, which can coexist in the same area with virtually no interference to each other. In this mode, each system must be configured with different Service Set Identifiers (SSID) and different channels, which prevent clients from roaming to LG Access Points of a different wireless system.
Page 48 of 50Appendix B Technical Specifications Functional Specification Item Function Configuration and setup . Local monitor . Access Point Manager Modes . Access Point . Wireless LAN Bridge Status Display Power, Air Link Status, Wire Link status Software Upgradeable Via Access Point Manager or local monitor Security WEP 64 bit standard, upgradeable to 128 bit Approval FCC (in processing) Max. No of Clients per AP 255
Page 49 of 50Electrical/Radio Specifications Item Specification Description Compliance IEEE802.11b Radio Type Direct Sequence Spread-Spectrum (DSSS) 2.4 GHz ISM Band Operating Frequency 2400-2483.5 MHz North American, ETSI, and Japan channel coverage, factory configurable Range Depending on data rate and environment. Accurate values must be calculated for specific installation. Data Rate 1, 2, 5,5 or 11Mbps Dynamic rate selection based on radio medium quality. FCC ID FCC approval Number of Channels Max 13 Refer Appendix CHANNEL Channeling 5 MHz increments Programmable for IEEE 802.11b Type of Modulation BPSK 1 Mbit/s QPSK 2 Mbit/s CCK 5.5 and 11 Mbits/s Nominal 10 MHz BW (-6 dB) Receiver sensitivity –87 dBm @ 1 Mbps –85 dBm @ 2 Mbps –84 dBm @ 5.5 Mbps –81 dBm @ 11 Mbps Wired LAN Interface 10Base-T RJ45 Connector Serial Interface RS-232 @ 19.2Kbps DB-9 female Power Consumption 4.5W @ 20°C Power Supply 1.5A DC Input 100-240VAC, 60Hz 5V VDC Dimension 190w x 148d x 1.6h MM Weight 216g Without antenna Operating Temperature 0°C ~ +55°C Storage Temperature -30°C ~ +80°C Operating Humidity 10% ~ 90% Non-condensing
Page 50 of 50Appendix C Channel Allocation The channel identifiers and the channel center frequencies of each 22-MHz-wide channel are shown in the table below, as appropriate for the various areas or regulatory agencies. Regulatory Domains Channel Identifier Center Frequency North America ETSI / korea Spain France Japan 1 2412MHz √ √ − − √ 2 2417MHz √ √ − − √ 3 2422MHz √ √ − − √ 4 2427MHz √ √ − − √ 5 2432MHz √ √ − − √ 6 2437MHz √ √ − − √ 7 2442MHz √ √ − − √ 8 2447MHz √ √ − − √ 9 2452MHz √ √ − − √ 10 2457MHz √ √ √ √ √ 11 2462MHz √ √ √ √ √ 12 2467MHz − √ − √ √ 13 2472MHz − √ − √ √ 14 2484MHz − − − − √

Navigation menu