Buffalo Technology AirStation Pro Intelligent WLM2-G54 User Manual

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Figure 6.2 Apartments and Condominiums

Figure 6.3 Schools

system can be set with authenticated security so that only the authorized tenants can access the network. Buffalo’s wireless solution can be used as an optional fee-basedservice.


Sometimes it is necessary for students to have personal Internet connections for schoolwork. Wireless LANs make the network connection flexible within a school campus. The broadband availability area can be expanded using Buffalo’s wireless building- to-buildingsolution.This solution uses an outdoor antenna for each building instead of installing CAT5 cable between buildings. Accessing the network and Internet anywhere and anytime on campus is a part of Buffalo’s total support of educational technology.


Medical test results and diagnostics for each patient in the hospital database should be updated in real time. The wireless solution used to connect to the hospital network can be crucial for saving patients’ lives. For example, the newest diagnostic data is updated to a hand-heldwireless device at the patient’s bedside so that the appropriate prescription is prepared on time. Similarly, surgical data can be transmitted to a central database in real time for crosschecking the operating procedures. In these cases, there is no need for network cables. The security of wireless communication is well enhanced by MAC address filtering (port security) so that only authorized personnel can access the hospital network.


In this scenario, a wireless LAN is seen in a manufacturing line in a factory. A variety of control machines and robots are connected to the central server and operated wirelessly. Using Buffalo’s wireless networking system, the manufacturing data is sent to the factory server immediately so that the center can efficiently respond to decisions and com-


mands. With a wireless LAN, any changes in the factory’s machine layout can be completed quickly. Wireless flexibility offers installation and operation cost savings for the factory.

6.6Area Intranets

Community buildings such as schools, city halls, gyms, etc., can be connected by Buffalo’s wireless LAN system to form an area Intranet. Buffalo offers the most effective wireless solution for building-to-buildingapplications. There is no need for costly andtime-consuminginstallations of fiber optics and cables between buildings. Additions to and expansion of the wireless network are simple and flexible. Using Buffalo’s wireless solution within the building provides additional freedom and quick data deployment/configuration changes to network systems.

7.0Support Functions

7.1PoE - Power over Ethernet

PoE based on the IEEE802.3af specification, draft 2.0, provides power in a CAT5 cable, thus eliminating the need to use a separate power supply cable. It must be used with Buffalo’s supply adapter WLE-POE-S(sold separately) as shown below. With PoE, the user can locate aWLM2-G54anywhere without the need for a power outlet nearby.

Figure 6.4 Hospitals

Figure 6.5 Factories

Figure 6.6 Area Intranets


7.2Environmental Resistance

The WLM2-G54AP’s high durability design allows resistance to environmental conditions like temperature changes. Since it is less susceptible to environmental change, it is suitable for warehouses, public areas and other locations where temperature control is not available. Optionaldust-proofand waterproof casings are available.

7.3Upgradeable Firmware

With Buffalo’s firmware upgrade utility tool, updating the firmware will be simple.

7.4Diagnostic Support

The WLM2-G54provides tools to monitor and methods to correct its wireless operations. Some of these tools are device status, packet status, wireless PC information, ping test, log information andre-initializationof parameters.


8.0Client Configuration

8.1Introduction II

This chapter provides general information about:

Basic Setup

Time Setup

Administrative Managing

Bridging Setup

Routing Setup

Packet filtering Setup

Limiting wireless client number

WDS (AP-to-AP)Setup

Wireless Setup

Explanations for each parameter and details of how to use the parameter are described in the next chapter. Connecting and setting up the access point for accessing the Internet quickly are the objective of this chapter.

8.2Setup Preparation

The following parameters must be known before setting up the WLM2-G54Intelligent Access Point. If you do not have these, you should consult with your IT personnel.


WLM2-G54’ssystem name or location name

WLM2-G54’sIP address. If you plan to use DHCP, this is not necessary.

WLM2-G54’swired side MAC address. Check the label on the back of the WLM2G54.

8.3Setup Overview

A general setup process is shown below. Special setups for security, filtering and others will be explained in later sections.

1.Connect the cables to WLM2-G54based on the wiring instructions. It is possible to use a straight cable to connect the AirStation directly to your PC. In this case you need some type of Terminal Software to set up theWLM2-G54.

2.The PC must have a valid TCP/IP setting. For the TCP/IP setup or to check it, please refer to the instructions for your OS (the default IP and subnet address of the WLM2-G54is and 255.255.0).

8.4 Installation of the Client Manager

1.Insert the Air Navigator CD into the CDROM drive.

2.Start the Install wizard. If the wizard does not start, double click the Setup.exe file in the Air Navigator CD. Install the Client Manager.

3.Click Start and select Programs / AirStation Utility / Client Manager to open the Client Manager. The setup PC must have a valid IP address of its own.

4.Select Edit / Search AirStation to look for the nearest AirStation. Highlight the WLM2-G54.


5.After finding an AirStation, select Admin / Set IP address.

6.Either enter the IP and Subnet Mask address in the boxes or select DHCP.

7.Leave the Password box empty. Click OK.

8.IP address setup is complete.

8.5Setup Screen

1. Highlight the WLM2-G54,click the "Admin" button, then the "Configure AirStation" tab to open the setup screen. In the password page, enter the following information:

User Name: root

Password: [leave blank]

Click OK.

2. Select the language you want to use. English and Japanese are available.

Figure 8.5 Setup Screen

Figure 8.6.4 Security Settings


Figure 8.6.7 SNMP Function

Figure 8.6.9 DHCP and manual IP configuration

8.6 Input Parameters Through the

Client Manager

1.Click the "Management" to open the next page.

2.Click the "Time Settings" menu on the left (menu section) to set the current time. Click Set.

3.Click the "LAN Setup" menu on the left; then click the "Wireless" menu.

4.Enter appropriate ESS-IDand channel number. (see previous page)

■ Note: ESS-IDsare case sensitive, up to 32 alphanumeric characters in length.

5.Select WEP Enable box. Enter appropriate WEP key on line 1. Click Set. Click Set again.

6.Click the "Network Setup" menu on the left.

7.If you want to use the Agent Function, check "On" and input the WLM2-G54’slocation, and Administrator Information. Click Set.

8.If the WLM2-G54is operated in a large network environment, using a predetermined name identification system may be recommended, to help identify theWLM2-G54easily. In order to set the name, click the "Host Setup" menu to open the basic setup page. Type an appropriate name in the "AirStation Name" box. Click Set.

9.On the LAN Port page, you may opt to obtain the IP address from the DHCP server or enter a static IP address manually for the access point. If you are given a default gateway IP from your ISP, input that address. If it is not given to you, leave the box empty. Click Set.

8.7 Input Parameters Through a

Wired PC,Terminal Software

1.Use the serial cable provided to connect the WLM2-G54to the PC’s COM port.

2.Start the Hyper Terminal software included in the Windows OS. Hyper Terminal is a standard software in Windows but it is


possible to use any other off-the-shelfsoftware.

■ Note: If the AirStation is already connected by Telnet or Client Manager, you cannot log in from the terminal software.

3.Setup the terminal as follows: Baud rate: 57600

Data bit: 8 Parity: None Stop bit: 1

Flow Control: None

4.When the "Apxxxxxxxxxxxxx login" prompt appears, login the WLM2-G54by "root".

5.Set the WLM2-G54’stime by using “date” command: Setup date year/month/date (use two digit number for the month and the date, Example: "set date 2002/03/27")

6.Set the WLM2-G54’sESS-IDby using "essid" command.

airset 11g essid xxxxxx

(ESS-IDis defined by up to 32 alphanumeric characters.The default value is 12 digits. You can reset theESS-IDto the default value by using "airset 11g essid_default" command.)

7.Set the WLM2-G54’swireless channel. Use

“airset 11g channel xx”

command. Select one number from 1~11. The default number is 11.

8.Set the WLM2-G54’sWEP. Use “airset 11g wep xxxx yyyy zzzz” command. Xxxx is the key type (40 or

128bit) and yyyy is the key index number and zzzz is the actual key as shown below. Keytype: Key – 40bit WEP

Key128 – 128bit WEP

Key index:The index number of the WEP to be used, select one from 1~4. The default is 1.

Key: “text” + 5 blank spaces + 5 letters or 10 digits hexadecimal (for 40bit WEP) or 13 characters or 26 digits hexadecimal (for 128bit WEP)

■ Note: the text must be used with “ ” mark.s. Examples:

airset 11g wep key text “skey5”

airset 11g wep key a3d58bb632

airset 11g wep key index 1 text “skey5”

If you want to clear the WEP key use: airset 11g wep keytype clear (the keytype is explained above).

9.Set the WLM2-G54’ssystem ID name. Use the “set apname xxx” command. Xxx is a numeral of up to 32 characters. An example is: Set apname AirStation01. If you need tore-setthe device to default name use the following example. Set apname _default.

10.Set the WLM2-G54’sIP address. Use “ip address lan0 assigned_ip” command. Assigned_ip:The IP address assigned by your ISP. Examples:

Ip address lan0 – manually input the IP address and Netmask.

Ip address lan0 dhcp – use the

DHCP server

Ip address lan0 clear – clears the IP address

11. Set the WLM2-G54’sdefault gateway. Use “ip defaultgw gw_ip” command. Gw_ip is the assigned gateway IP. Example: gw_ip

8.8 Input Parameters Through a

Wired PC,Telnet Software

The WLM2-G54setup can be performed by using Telnet software similar to the Terminal software above.

In order to bring up the setup page:

1.Connect the supplied serial cable to the AirStation and the PC’s COM port.

2.Select Start / Run.

3.Input “Telnet <WLM2-G54’sIP address>” in the file name and press “Enter”. The IP address can be identified through the Client


Manager or Terminal Software setup screen.

4.When login prompt appears, enter “root” as a default login name.

5.Input "?"/press "Enter" to view list of commands.


9.0Detailed Configurations

9.1Introduction III

Although your AirStation will work fine in most network environments, you may wish to explore the advanced options. This chapter explains each parameter in the setup screen.

9.2Basic Settings

Basic Settings includes the following parameters:

AirStation Name

Connection type

Figure 9.3 Time Settings

IP address

Default Gateway

DNS Server

9.2.1 AirStation Name

A unique name can be set for your AirStation in order for clients to recognize it. It identifies each access point when multiple access points are present. Although it is not necessary to set this parameter, it can be useful. Once it is set, the name will be shown at the top of the initial setup screen.

9.2.2 Connection type

The following options are possible for the wired LAN port setting:

10 Mbps Half Duplex

100 Mbps Half Duplex


If the port on the LAN hub is set to Full Duplex, set the WLM2-G54to Auto.

9.2.3 IP Address

If you do not use a DHCP server on your network, you have to assign an IP address manually. A specific IP address should be obtained for this. You can use DHCP by selecting "auto IP assignment from DHCP Server."

9.2.4 Default Gateway

A default gateway IP should be assigned to the AirStation. If the gateway IP is unknown, leave the box blank. If "Auto IP assignment from DHCP Server" is selected, the gateway IP will be assigned automatically.

9.2.5 DNS Server

Input the IP address of the server to be used by the WLM2-G54for DNS resolution. If DNS is not used, leave blank.


9.3Time Settings

Input the correct time manually or input the NTP server on your network. Using NTP Server: Check ON box in NTP. Specify the NTP server name, check interval, and time zone. (see previous page)


Management Settings includes the following parameters:

Host Setup

Time Settings

Syslog Setup

Unit Information

Transfer Packet Information

Wireless LAN PC Information

Log Information

Ping Test

Firmwave Update

Return to Default Setting

9.4.1 Host Setup

The user ID is "root". The default password is blank --no password.

To input a new password:

Enter the password in the "New Password" field

Re-enterthe password in the "Confirm Password" field

If you are changing an old password, you must enter the old password in the "Current Password" field also.

Configuration of the WLM2-G54via a web browser (including Client Manager) or a Telnet session may be enabled or disabled here. A wired session via the serial port and terminal software may be used to configure theWLM2-G54if WEB and Telnet are disabled.

9.4.2 Syslog Setup

Figure 9.4.1 Host Setup

Figure 9.4.2 Syslog Setup


This enables reporting to the syslog server. Check the "ON" box if you want the system logs to be sent to the log server. The setup for the log server should be found in the syslog’s manual. The following log type can be tranfered: Setting, Autheutification, Device, Filter, and System.

(see previous page)

9.4.3 Moved to Network Setup section

Enabling the SNMP agent function allows the following:

Access from the SNMP manager. Access the WLM2-G54local MIB information (through a web browser) such as theWLM2-G54’slocation, theWLM2-G54’sadministrator, and the SNMP community where the WLM2G54 belongs.

When MIB file is accessed, the following object ID (the ID which indicates information to be included in general network devices) or the number will be used.

System(1)=General administrative information

Figure 9.5 Bridge

Interfaces(2)=PHY interface information

IP(4)=Whether IP is working or not.

Icmp(5)=Whether ICMP protocol is working or not.

TCP(6)=Whether TCP protocol is working or not.

UDP(7)=Whether UDP protocol is working or not.

SNMP(11)=Whether SNMP is working or not.

The number that corresponds to the ID will be displayed. If you want to assign a different value, input the desired value and click "Set."


Bridge settings includes the following parameters:

Spanning Tree Function

Bridge Priority

Forward Delay

Hello Time

Max Age

Aging Time

Port Priority

Path Cost

9.5.1 Spanning Tree

This function is used to prevent data from being circulated infinitely when the network is a loop type.

9.5.2 Bridge Priority

The priority of the bridge can be set anywhere between 0~65535. The value depends on how you form the Spanning Tree. The primary routing bridge within the Tree must be assigned the minimum value. An arbitrary value can be assigned to other bridges. The default value is 32768.

9.5.3 Forward Delay


Data forwarding can be delayed by a preset length of time. The delay time value may be from 4~30 seconds. The default value is 5 seconds.

9.5.4 “Hello” Time

The Hello message (to the network) broadcast time interval can be changed. The "Hello" message is used to set up network routing under the Spanning Tree protocol. The interval can be 1~10 seconds. The default value is 2 seconds.

9.5.5 Max Age

The "Hello" message time out period can be changed. The time out period starts the spanning tree elapse timing calculation once the "Hello" message signal reception has ceased. Once the Max Age time period is exhausted, the network topology will change.

9.5.6 Aging Time

Self-learnedor registered MAC addresses that are not active will be erased after the Aging Time has elapsed. The value can be set anywhere from 10~1000000 seconds. The default value is 300 seconds.

9.5.7 Port Priority

The priority of the STP port can be set from 0~255. Smaller values will have higher priority. The default value is 128.

9.5.8 Path Cost

The primary bridge owns a lower cost than the cost to other bridges so that the “Hello” message issued from the primary bridge automatically adds the cost to the message received from its parent bridge. The “Hello” message issued from a route bridge has 0 as the route path cost.


Communication routing can be set between WLM2-G54and other network devices in the same network. The following parameters

Figure 9.6 Routing

are supported:

RIP reception

Add Routing Table Entry

Routing Table Entries

9.6.1 RIP Reception

The RIP information received by the WLM2G54 can be set to RIP1, RIP2, RIP1 and RIP2, or no RIP. The default is both RIP1 and RIP2.

9.6.2 Add Routing Table Entry

Routing (or RIP) information can be set manually. The following parameters will be used. Destination address=The network IP address and the subnet mask for the destination. Gateway=The packet to the destination passes through the gateway address.

Metric=total number of routers to be passed before the packet reaches its destination. You can select from 1~15. The default value is 15. click “Add.”