LG ELECTRONICS LW1100AP WLAN Access Point User Manual APManual

Download:
Mirror Download [FCC.gov]
Document ID	181215
Application ID	zhWYfNpWhb8IRBmMT93xzQ==
Document Description	Updated Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	301.16kB (3764532 bits)
Date Submitted	2001-11-28 00:00:00
Date Available	2001-11-29 00:00:00
Creation Date	2001-11-28 12:13:27
Producing Software	Acrobat PDFWriter 4.0 for Windows NT
Document Lastmod	0000-00-00 00:00:00
Document Title	APManual
Document Creator	APManual (Preview) - Microsoft Word
Document Author:	LSchmidt

Wireless LAN Access Point
User’s Guide
LW1100AP Series
Page 1 of 50
Contents
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 ……….
Chapter 3
28
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 2 of 50
Appendix
Appendix A
Cell Planning (Radio Range) ……………………………..46
Appendix B Technical Specification ……………………………………48
Appendix C Channel Allocation ……………………………..………….50
Page 3 of 50
THE 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 radiofrequency 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 4 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 r espective owners. The use of the word partner does not imply a
partnership relationship between LGand any of its resellers.
The LG Access Point User ’s Guide
Copyright© 2001, LG Electronics Inc.
All rights reserved.
Page 5 of 50
Chapter 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,
manufa cturing, 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 t o 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 6 of 50
is 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 7 of 50
for 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).
Independent Basic
Service Set (IBSS)
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.
Page 8 of 50
Since most corporate WLANs require access to the wired LAN for services
(file servers, printers, Inter-net links) they will operate in infrastructure mode.
Distribution System (DS)
Ethernet (802.3)
Access Point (AP)
Service Set (SS) – Multiple
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, th e client tunes to the
radio channel to which the access point is set. Periodically it surveys all 802.11 channels
Page 9 of 50
in 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.
Backbone Network
Access Point (AP)
Inter-Cell Roaming
Figure 3. Roaming
Page 10 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 11 of 50
Backbone Network
AP #`1 SS ID
AP #`2 SS ID
= LG
= LG
ROAMING
Re-Configuration
Required
ESS
BSS
AP #`3 SSID
=LWAP
Backbone Network
Figure 4. SSID and Roaming
Page 12 of 50
Chapter 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 13 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 14 of 50
2.2 Installing The LG LW1100AP Series Access Point
Follow the instructions below to install the Access Point.
STEP 1 Adjust the antennas
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.
Page 15 of 50
STEP 2 Ethernet Cable Connection
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.
Page 16 of 50
STEP 3 Connect The Power Pack
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.
Page 17 of 50
STEP 4 Connect Serial Cable
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 5 Ope n Terminal Program
Page 18 of 50
Open the HyperTerminal program on the workstation attached to the Access Point.
These instructions describe HyperTerminal for example, but you can use any terminalemulation 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 19 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 Ente r.
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 20 of 50
The other options that are displayed can be ignored in this chapter and there will be
detail explanation next Access Point Management section
STEP 5 Configuration Change
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, thereoccur changeable
Access Point options and you can select or edit what you wanted. Refer the next
example.
Page 21 of 50
8
RETURN
The SSID value is case sensitive and can enter up to 32 characters without banks.
RETURN
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.
Page 22 of 50
8
RETURN
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.
RETURN
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.
Page 23 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 128bitkey 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 24 of 50
safe 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 25 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 26 of 50
Page 27 of 50
2.3 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 28 of 50
LED Name
Operational State
PWR
On (Green) = power is okay
Orange
WLAN
= AP Functional Fail Occur
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 29 of 50
Chapter 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 30 of 50
3.1 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 Man ager Ú AccessPointManager.exe
Or you can simply click the AccessPointManager icon on the windows screen.
The program starts with the following screen.
Page 31 of 50
Access Point Connection
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 A ccess Point connection fails, verify that you have correctly installed the AP. If the
AP still fails to connect, refer to troubleshooting chapter.
Page 32 of 50
Access Point Configuratio n Window
Once, the Access Point Manager program successfully connected to an Access Point,
all the configura tion 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
Page 33 of 50
DHCP 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 A ccess 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 34 of 50
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. 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 35 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 36 of 50
Terminal Window for Diagnosis
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.
Page 37 of 50
Firmware Upgrade Window
Use this page to simultaneously update the Access Point’s system firmware via your
local disk or Internet. After making firmwa re 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.
Page 38 of 50
Firmware Upgrade Via Internet
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.
Page 39 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.
Firmware Upgrade Via Local Disk
In order to upgrade Access Point firmware via local disk, click the Local Disk button. In
Page 40 of 50
order 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 41 of 50
Access Point Detail Control
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:
Page 42 of 50
Other 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 43 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 44 of 50
Chapter 4
Troubleshooting
T.B.D.
Page 45 of 50
Appendix
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 46 of 50
Radio 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 47 of 50
Appendix 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
Max. No of Clients per AP
FCC (in processing)
255
Page 48 of 50
Electrical/Radio Specifications
Item
Specification
Compliance
IEEE802.11b
Description
Direct Sequence
Radio Type
Spread-Spectrum
2.4 GHz ISM Band
(DSSS)
Operating Frequency
Range
Data Rate
2400-2483.5 MHz
North American, ETSI,
and Japan
channel coverage, factory configurable
Depending on data rate Accurate values must be calculated for
and environment.
1, 2, 5,5 or 11Mbps
FCC ID
specific installation.
Dynamic rate selection based on radio
medium quality.
FCC approval
Number of Channels
Max 13
Refer Appendix CHANNEL
Channeling
5 MHz increments
Programmable for IEEE 802.11b
BPSK 1 Mbit/s
Type of Modulation
QPSK 2 Mbit/s
CCK 5.5 and 11 Mbits/s
Nominal 10 MHz BW
(-6 dB)
–87 dBm @ 1 Mbps
Receiver sensitivity
–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%
Page 49 of 50
Non-condensing
Appendix 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.
Channel
Center
Identifier Frequency
Regulatory Domains
North
ETSI /
America
korea
Spain
France
Japan
2412MHz
√
√
−
−
√
2417MHz
√
√
−
−
√
2422MHz
√
√
−
−
√
2427MHz
√
√
−
−
√
2432MHz
√
√
−
−
√
2437MHz
−
2442MHz
√
√
−
√
√
−
−
√
√
2447MHz
√
√
−
−
√
2452MHz
√
√
−
−
√
10
2457MHz
√
√
√
√
√
11
2462MHz
√
√
√
√
√
12
2467MHz
−
−
13
2472MHz
−
√
√
−
√
√
√
√
14
2484MHz
−
−
−
−
√
Page 50 of 50

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 50
Creator                         : APManual (Preview) - Microsoft Word
Create Date                     : 2001:11:28 12:13:27
Title                           : APManual
Author                          : LSchmidt
Producer                        : Acrobat PDFWriter 4.0 for Windows NT

EXIF Metadata provided by EXIF.tools