Hirschmann BAT 11b Management Manual

BAT 11b Management Manual

Industrial ETHERNET Wireless LAN

Access Point / Access Client

BAT 11b Management Manual

Industrial ETHERNET Wireless LAN

Access Point / Access Client

The naming of copyrighted trademarks in this manual, even when not specially indicated, should
not be taken to mean that these names may be considered as free in the sense of the trademark
and tradename protection law and hence that they may be freely used by anyone.

© 2004 Hirschmann Electronics GmbH & Co. KG

Manuals and software are protected by copyright. All rights reserved. The copying, reproduction,
translation, conversion into any electronic medium or machine scannable form is not permitted,
either in whole or in part. An exception is the preparation of a backup copy of the software for
your own use.

The performance features described here are binding only if they have been expressly guaran­teed in the contract. This publication has been created by Hirschmann Electronics GmbH & Co.
KG according to the best of our knowledge. Hirschmann reserves the right to change the con­tents of this manual without prior notice. Hirschmann can give no guarantee in respect of the
correctness or accuracy of the details in this publication.

Hirschmann can accept no responsibility for damages, resulting from the use of the network
components or the associated operating software. In addition, we refer to the conditions of use
specified in the license contract.

Printed in Germany

Hirschmann Electronics GmbH & Co. KG
Automation and Network Solutions
Stuttgarter Straße 45-51
72654 Neckartenzlingen
Tel. [phone]-0104

Hirschmann worldwide

U Germany

Hirschmann Electronics GmbH & Co. KG
Automation and Network Solutions
Stuttgarter Straße 45-51
D-72654 Neckartenzlingen
Tel. ++49-7127-14-1480
Fax ++49-7127-14-1502
email: [e-mail]
Internet: www.hirschmann.de

U Switzerland

Hirschmann Electronics GmbH & Co. KG, Neckartenzlingen
Niederlassung Uster
Seestr. 16
CH-8610 Uster
Tel. ++41-1905-8282
Fax ++41-1905-8289
email: [e-mail]

U France

Hirschmann Electronics S.A.S.
2, rue des Charpentiers
F-95330 Domont
Tel. ++33-1-39350100
Fax ++33-1-39350102
email: [e-mail]

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U Great Britain

Hirschmann Electronics Ltd.
4303 Waterside Centre
Solihull Parkway
Birmingham Business Park
Birmingham
West Midlands B37 7YN
Tel. ++44-121 329 5000
Fax ++44-121 329 5001
email: [e-mail]

U Netherlands

Hirschmann Electronics B.V.
Pampuslaan 170
NL-1382 JS Weesp
Tel. ++31-294-462591
Fax ++31-294-462554
email: [e-mail]

U Spain

Hirschmann Electronics S.A.
Calle Traspaderne, 29
Barrio del Aeropuerto
Edificio Barajas I, 2a Planta
E-28042 Madrid
Tel. ++34-1-7461730
Fax ++34-1-7461735
email: [e-mail]

U Hungary

Hirschmann Electronics Kft.
Rokolya u. 1-13
H-1131 Budapest
Tel. ++36-1-3494199
Fax ++36-1-3298453
email: [e-mail]

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U USA

Hirschmann Electronics Inc.
20440 Century Boulevard, Suite 150
Germantown, MD 20874
Tel. ++1-240-686 2300
Fax ++1-240-686 3589
email: [e-mail]

U Singapore

Hirschmann Electronics Pte. Ltd.
2 International Business Park #11-02/03 Tower One
The Strategy Singapore 609930
Tel: ++65 6316 7797
Fax:++65 6316 7977
email: [e-mail]

U China

Hirschmann Electronics Pte Ltd Shanghai Office
Room 828, Summit Centre,
1088 West Yan An Road
Shanghai 200052
P. R . C h i n a
Tel: ++86-21 6207 6637
Fax: ++86-21 6207 6837
Mobile: ++86-1370 185 7382
E-Mail: [e-mail]

For all other countries please dial Tel. [phone]
Contact address see Hirschmann Germany.

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Hirschmann Competence

In the longterm, product excellence alone is not an absolute guarantee of a
successful project implementation. Comprehensive service makes a differ
ence worldwide. In the current scenario of global competition, the Hir­schmann Competence Center stands head and shoulders above the
competition with its comprehensive spectrum of innovative services:

D Consulting incorporates comprehensive technical advice, from system

evaluation through network planning to project planning.

D Training offers you an introduction to the technological fundamentals,

product briefing and user training with certification.

D Support ranges from commissioning through the standby service to main-

tenance concepts.

With the Competence Center, you firmly rule out any compromise: the client­specific package leaves you free to choose the service components that you
will use.

-

Internet:
http://www.hicomcenter.com

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Safety instructions

U Supply voltage

The devices are designed for operation with a safety extra-low voltage.
They may only be connected to the supply voltage connections and to
the signal contact with PELV circuits or alternatively SELV circuits with
the voltage restrictions in accordance with IEC/EN 60950.
The supply voltage is electrically isolated from the housing.

V Never start operation with damaged components!
V Relevant for North America:

The subject unit is to be suppplied by a Class 2 power source
complying with the requirements of the National Electrical Code, table
11(b). If power is redundant supplied (two individual power sources)
the power sources together should comply with the requirements of
the National Electrical Code, table 11 (b).

V Relevant for North America:

Use 60/75°C or 75°C copper(CU)wire only.

U Shielding ground

The shielding ground of the connectable twisted pair lines is connected
to the front panel as a conductor.
V Beware of possible short circuits when connecting a cable section with

conductive shielding braiding.

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U Housing

Only technicians authorized by Hirschmann are permitted to open the
housing.
The device is grounded via the separated ground screw. It is located on
the bottom left of the front panel.
V Make sure that the electrical installation meets local or nationally

applicable safety regulations.

V The ventilation slits must not be covered to ensure free air circulation.
V The distance to the ventilation slots of the housing has to be a

minimum of 10 cm.

V Never insert pointed objects (thin screwdrivers, wires, etc.) into the

inside of the subrack! Failure to observe this point may result in injuries
caused by electric shocks.

V The housing has to be mounted in upright position.
V If installed in a living area or office environment, the device must be

operated exclusively in switch cabinets with fire protection
characteristics according to EN 60950.

U Environment

The device may only be operated in the listed maximum surrounding air
temperature range at the listed relative air humidity range (non­condensing).
V The installation location is to be selected so as to ensure compliance

with the climatic limits listed in the Technical Data.

V To be used in a Pollution Degree 2 environment only.

U Qualification requirements for personnel

Qualified personnel as understood in this manual and the warning signs,
are persons who are familiar with the setup, assembly, startup, and
operation of this product and are appropriately qualified for their job. This
includes, for example, those persons who have been:

D trained or directed or authorized to switch on and off, to ground and to

label power circuits and devices or systems in accordance with current
safety engineering standards;

D trained or directed in the care and use of appropriate safety equipment

in accordance with

the current standards of safety engineering;

D trained in providing first aid.

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U General Safety Instructions

This device is electrically operated. Adhere strictly to the safety
requirements relating to voltages applied to the device as described in
the operating instructions!

Failure to observe the information given in the warnings could result in
serious injury and/or major damage.
V Only personnel that have received appropriate training should operate

this device or work in its immediate vicinity. The personnel must be
fully familiar with all of the warnings and maintenance measures in
these operating instructions.

V Correct transport, storage, and assembly as well as careful operation

and maintenance are essential in ensuring safe and reliable operation
of this device.

V These products are only to be used in the manner indicated in this

version of the manual.

V Any work that may have to be performed on the electrical installation

should be performed by fully qualified technicians only.

Warning!

LED- or LASER components according to IEC 60825-1 (2001):
CLASS 1 LASER PRODUCT.
LIGHT EMITTING DIODE - CLASS 1 LED PRODUCT.

U National and international safety regulations

V Make sure that the electrical installation meets local or nationally

applicable safety regulations.

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U Note on the CE marking

The devices comply with the regulations contained in the following
European directives:

89/336/EEC
Directive of the council for standardizing the regulations of member
states on electromagnetic compatibility (changed by RL 91/263/EEC, 92/
31/EEC and 93/68/EEC).
In accordance with the above-named EU directives, the EU conformity
declaration will be at the disposal of the relevant authorities at the
following address:

Hirschmann Electronics GmbH & Co. KG
Automation and Network Solutions
Stuttgarter Straße 45-51
D-72654 Neckartenzlingen
Germany
Phone ++49 7127 14 1480

The product can be used in living areas (living area, place of business,
small business) and in industrial areas.

D Interference immunity: EN 61000-6-2:2001
D Emitted interference: EN 55022:1998 + A1 2000 Class A

Warning!

This is a class A device. This device can cause interference in living
areas, and in this case the operator may be required to take appropriate
measures.
The assembly guidelines provided in these instructions must be strictly
adhered to in order to observe the EMC value limits.

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U FCC note:

Appropriate testing has established that this device fulfills the
requirements of a class A digital device in line with part 15 of the FCC
regulations.
These requirements are designed to provide sufficient protection against
interference where the device is being used in a business environment.
The device creates and uses high frequencies and can radiate same,
and if it is not installed and used in accordance with this operating
manual, it can cause radio transmission interference. The use of this
device in a living area can also cause interference, and in this case the
user is obliged to cover the costs of removing the interference.

U Recycling note:

After usage, this product must be disposed of properly as electronic
waste in accordance with the current disposal regulations of your county
/ state / country.

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Table of Contents

Preface 19
Knowledge Prerequisites 20
Manual Conventions 21
Important Text Passages 21
Hirschmann Service 22
The BAT 11b Wireless Ethernet Product Package 22
Hardware Description 25

BAT 11b— LEDs 25
BAT 11b—Rear View and Ports 26
The Power Supply 27

Commissioning 28

Selecting an Appropriate Location 28
Screwing on the External Standard Antenna 28
Connection to the Ethernet 29
Connection to the Power Supply 29

After the Successful Commissioning 30

Operation of the BAT 11b as Access Point 31
Operation of the BAT 11b as Access Client 31

The Basic Configuration 37
The Main Parameters 39

Changing the Password 39
Setting the Network Name 39
Selecting the Frequency 40
Activating the Encryption 40

The Hirschmann BAT Discovery 41
The User Interface of the BAT Discovery 43

The Main Window 44
The Menu 44
The Tool Bar 44
The Status Bar 44

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The Functions of the BAT Discovery 45

Searching for Available BAT 11b 45

17

Editing Entries Manually 47
The Basic Configuration 49
How to Set up a Web Connection 50
How to Upgrade the Firmware 51
How to Reset the BAT 11b to the Factory Defaults 55
How to Restart the BAT 11b 55
How to Exit the BAT Discovery 55

The User Interface of the BAT 11b in the AP Mode 57

How to Start the User Interface 57
Status 59
Configuration: Statistics 62
Configuration: LAN Interface 67
Configuration: Wireless Interface 70
Configuration: Security 75
Configuration: ACL 79
Configuration: Administration 80

The User Interface of the BAT 11b in the AC Mode 83

How to Start the User Interface 83
Status 85
Scan 88
Bridge 89
Statistics 90
Configuration: LAN Interface 96
Configuration: Wireless Interface 98
Configuration: Security 103
Configuration: Administration 106

Annex 109

How to Configure the TCP/IP Protocol 111
Glossary 114
Frequencies and Channels 120
Specifications 121
How to Reset the Password 122

18 BAT 11b

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Preface

Introduction

With the products of the BAT 11b family, Hirschmann offers
a complete range of infrastructure solutions to enable
wireless communications between a variety of mobile
devices as well as entire networks. Utilizing the latest wire­less LAN technology, the BAT 11b platform has been specif­ically designed to match the performance requirements of
the most demanding professional applications.

Whether deployed as an extension of the existing wired
infrastructure or to form an independent wireless network,
BAT 11b meets the ever-increasing communication needs
of your corporate workforce.

Introduction

New Flexibility

Flexibility and mobility have become crucial factors in
today's business environment, stipulating the need to pro­vide highly efficient and ubiquitous access to data. A wire­less infrastructure, as provided by Hirschmann with the BAT
11b product family, serves to offer new opportunities to the
most diverse target groups.

Your decision to build a wireless infrastructure with the
Hirschmann BAT 11b will result in many benefits beyond
the mere use of a wireless network. Now, you are much
more flexible. Within the wireless infrastructure provided
by Hirschmann, end devices are able to access the network
at any given site, the network can grow with the demands
made and according to the requirements of the users, and
even bridging to other networks is possible. Without com­plicated installation and the hassle of wiring. At any loca­tion you choose. Right where and when you need it.

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19

Objectives

Objectives

Simply send your data along the most efficient route—directly
over the air. The Hirschmann BAT 11b product family provides
the ideal set of options for all of your demands. The versatility
of the BAT 11b family offers you the freedom and investment
protection you'd expect from a cutting-edge wireless infra­structure solution.

With the BAT 11b family, Hirschmann offers solutions appro­priate for each and every wireless user.

Knowledge Prerequisites

It is assumed that the reader possesses or is in the process of
acquiring the following knowledge:

• Basic knowledge of the setup of networks,

• Knowledge of the basic networking terms and concepts,
such as server, client, and IP address,

20 BAT 11b

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• Basic understanding of Microsoft Windows operating sys-

Manual Conventions

This manual uses the following text styles for the purpose of
guiding through the instructions:

• References to other manuals, chapters, or sections are

tems.

represented in blue

(in the online help screen and the PDF

version of the manual) and are underlined
Example:

See Manual Conventions

.

Objectives

.

• Menus, folders, functions, hardware labels, switch set­tings, system messages, etc. are represented in
italic.

Example:
Push the switch to the off position.

• Menus, functions, and subfunctions are separated from
each other by the “>” character.

Example:
Select File > Open...

• Keys you need to press simultaneously are indicated by a
“+” character preceding the second key.

Example:
Press Alt+A.

Important Text Passages

Important text passages are marked with symbols in the mar­gin, which have the following meanings:

Vorsicht:

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21BAT 11b

Objectives

Contains information which has to be observed in order to
avoid damaging the hardware or software.

Hinweis:
Contains important general or additional information on a

specific topic.
Voraussetzung:
Advises you of any prerequisites which have to be fulfilled to

perform the subsequent steps.

Hirschmann Service

Do you have any questions on our products or do you require
specific information on BAT 11b?

You can contact us, as follows:

•Internet: www.hicomcenter.com

• E-Mail (Service): [e-mail]

The BAT 11b Wireless Ethernet Product Package

The following components should be contained in your BAT
11b product package:

• BAT 11b Wireless Ethernet

• external standard antenna (to be screwed on),

• quick start flyer,

• installation CD-ROM,
Note:
If your BAT 11b product package does not meet your demands,

please contact our Hirschmann Service (see Section Hir-

schmann Service).

22 BAT 11b

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Objectives

You can find a description of the standard components of the
BAT 11b product package in the Section Hardware Description

.

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23BAT 11b

Objectives

24 BAT 11b

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1

Hardware Description

This section contains photographs and figures of the indi­vidual components of the BAT 11b product package, as well
as further information on the parts in question.

BAT 11b— LEDs

Front view on the BAT 11b Wireless Ethernet:

Hardware Description

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BAT 11b—Rear View and Ports

The front side of the BAT 11b accommodates the LED window
which displays the operational states. It indicates the states
of the media Port 1, WLAN, and Port 2. The LEDs may shine red,
green, or orange.

LED Symbol Meaning

Ethernet jack 1, Port 1
LS 1
DA 1

LS WAN

DA WAN

Green: Port 1 is connected to the LAN.

Orange: This LED displays the quantity of data

transmitted via Port 1. It blinks shortly if few

data is being transferred; with a high data

stream, it shines permanently in orange.

Radio

Green: Flashes irregularly in AC operation if not

registered at the AP. As soon as the AC is

registered at the AP, the LED shines

permanently. In AP operation, the green LED

shines permanently.

Orange: This LED displays the quantity of

wireless data. It blinks shortly if few data is

being transferred; with a high data stream, it

shines permanently in orange.

Ethernet jack 2, Port 2
LS 2
DA 2

Green: Port 2 is connected to the LAN.

Orange: This LED displays the quantity of data

transmitted via Port 2. It blinks shortly if few

data is being transferred; with a high data

stream, it shines permanently in orange.

BAT 11b—Rear View and Ports

The front side of the BAT 11b accommodates the jack for the
power supply and two RJ45 jacks for the Ethernet connection.

26 BAT 11b

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The Power Supply

The BAT 11b can be equipped with various antenna systems.
A standard antenna is contained in the scope of delivery.
Optionally, a variety of external antennas can be mounted.
The BAT 11b is for mounting on a top hat rail.

The Power Supply

The devices are designed for operation with a safety extra-low
voltage. They may only be connected to the supply voltage
connections and to the signal contact with PELV circuits or
alternatively SELV circuits with the voltage restrictions in
accordance with IEC/EN 60950.
The power supplies RPS 30, RPS 60 und RPS 120 from
Hirschmann meet these requirements.

Ports for
connection
Ethernet
(RJ-45)

Jack for
power
supply

R-SMA jack
Antenna

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27BAT 11b

Commissioning

Commissioning

The following section describes how to commission the BAT
11b. This procedure is performed in several steps:

1. Select the appropriate location where to mount the BAT
11b.

2. Screw on the external standard antennas.

3. Connect the BAT 11b to the Ethernet. Select either port 1
or port 2. The second port serves to cascade several
devices.
Note: Never connect both Ethernet jacks simulta­neously to the same network.
If you want to use the optional Power-over-Ethernet
(PoE) supply, you have to connect the Ethernet cable
with the PoE feeding to the port 1 jack.

4. Connection to the power supply

Selecting an Appropriate Location

Select an appropriate location where you want to mount the
device. If possible, the antenna should not be covered by
metal parts and should be freely visible. BAT 11bs should be
mounted in the center of the planned wireless cell. Usually,
the quality of the radio transmission increases the higher the
antenna is mounted. BAT 11b antennas and clients should
always be mounted parallel to each other and vertically to the
ground. In exceptional cases, it can be advantageous to
mount them horizontally, e.g. if the transmission is performed
through a ceiling or floor to another story.

Screwing on the External Standard Antenna

To set up a radio link via the BAT 11b, you can use the external
standard antenna shipped with the device.

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1. Screw the standard antenna onto the connector
designed for this purpose. Adjust the antenna to the
desired position.

2. If you wish to use an antenna with a TNC plug of the
Hirschmann product portfolio, use the adapter from the
RSMA plug to the TNC jack (optionally available) as
adapter.

Connection to the Ethernet

1. Insert one end of the RJ45 patch cable into the port 1 or
port 2 of the BAT 11b. Do only use an Ethernet port to
connect or configure the device.

Connection to the Ethernet

Note:
Standard patch cables 1:1 or cross-over cables (RJ45-

RJ45) are designed symmetrically. It is therefore not
possible to confuse the cable ends.

If you use the BAT 11b Wireless Ethernet as an access
point at a switch, you require a 1:1 patch cable. If you
want to connect it as a client to a computer with Ether­net interface or if you wish to cascade two BAT 11b Wire­less Ethernets with each other, you need a cross-over
cable.

2. Insert the other end into a free Ethernet port.

Connection to the Power Supply

1. When the supply voltage is connected via the 2-pin ter­minal, start up the BAT 11b.

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2. Lock the terminal block with the side locking screws.

3. The middle status LED indicates whether the BAT 11b is
properly connected to the power supply.

29BAT 11b

After the Successful Commissioning

After the Successful Commissioning

After connecting the BAT 11b to the mains power supply and
setting up a connection to your Ethernet, it is ready for use. A
BAT 11b Wireless Ethernet can be operated either in access
point mode (BAT 11b-AP) or in access client mode (BAT 11b-AC).
In the state as delivered, it works as access point and can be
operated as access client by means of a firmware upload. Also
refer to Section How to Upgrade the Firmware

Prerequisite:
If you are using a PC with an radio client, you can immediately

access your Ethernet via the BAT 11b, since the communica­tions parameters match in this configuration.

on Page 2–51.

Note:
To adapt the radio client to already existing configurations of

wireless networks, specific settings of the communications
parameters are required.

Prerequisite:
To be able to configure these settings, you have to start the

configuration via a browser. To do this, an IP address has to be
assigned to the BAT 11b via the Hirschmann BAT Discovery
(see Section The Basic Configuration

).

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Operation of the BAT 11b as Access Point

Operation of the BAT 11b as Access Point

In this example, the left BAT 11b works as an access point, the
right BAT 11b as an access client. All clients in LAN 2 are con­nected to the BAT 11b-AP in LAN 1.

AP AC

Operation of the BAT 11b as Access Client

The BAT 11b can be operated as access client either in the
infrastructure mode or in the ad-hoc mode. In ad-hoc opera­tion, it has to be ensured that all BAT 11b-ACs are installed
within the reach of the wireless network. As a rule, the ad-hoc
operation is usually not recommended, since transmission
interferences may occur more easily. In the infrastructure
mode, all clients have to be located within the wireless net­work of the BAT 11b-AP. Here, it is not necessary that they are
able to receive each other, since the access point controls the
complete communication.

LAN 2LAN 1

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31BAT 11b

Operation of the BAT 11b as Access Client

Figure: Ad-hoc operation, all clients communicate directly
with each other.

AC AC

AC

Figure: Operation in infrastructure mode, all clients communi­cate via an access point.

AP AC

AC

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Operation of the BAT 11b as Access Client

Operation as Single-Access Client

In this case, only a single computer is directly connected to
the BAT 11b-AC via a cross-over Ethernet cable. In the network,
the BAT 11b-AC is reached via the MAC address of the con­nected client. In this mode, all protocols can be transferred
transparently.

Example 1:

Example 2:

AC

AP AC

AC

AP

AC

AC

AC

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33BAT 11b

Operation of the BAT 11b as Access Client

Operation of the BAT 11b as Multi-Access Client

This operation is possible in the infrastructure or ad-hoc
(peer-to-peer) mode. Several computers are connected to the
BAT 11b-AC via a switch. In this case, NAT (Network Address
Translation) is applied so that all computers can be reached
via the MAC address of the BAT 11b-AC. Therefore, only the IP
protocol can be transferred transparently. If protocols other
than IP have to be transferred, each client has to be operated
at a single-access client, since NAT is only possible for IP for
multi-access clients.

Note: If the connected computers are to be configured via
DHCP, the DHCP server has to reply to their request with a
broadcast.

Example:

AP
AC

AC

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Operation of the BAT 11b as Access Client

Mixed Scenario

In this scenario, one BAT 11b works as AP, the other BAT 11bs
as single AC and multi-AC. In addition, two notebooks are
logged on to the AP.

Example 1:

AP AC

AC

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35BAT 11b

Operation of the BAT 11b as Access Client

Extension of the Range

If you wish to connect remote areas and require a wireless cell
there, as well, you can also operate a BAT 11b-AP at a BAT 11b­AC. In this case, it has to be ensured that the second wireless
cell is operated on another channel, if possible. Also refer to
the AP mode in Section Configuration: Wireless Interface

Page 3–70

, to the AC mode in Section Configuration: Wire-

less Interface on Page 4–98.

Example 2:

on

WLAN 1
Kanal 1

AP APAC

WLAN 2
Kanal 11

AC

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The Basic Configuration

This chapter describes which steps have to be performed in
order to assign an IP address to your BAT 11b via the
Hirschmann BAT Discovery.

To configure an IP address for your BAT 11b, carry out the fol­lowing steps:

Prerequisite:
The PC which you use to configure the IP address for your BAT

11b has to be connected to the same network as the BAT 11b to
be configured.

1. Insert the supplied CD into the drive of the correspond­ing computer.

The Basic Configuration

2. Carry out the instructions of the CD wizard and install
the BAT Discovery.

3. Start the Hirschmann BAT Discovery from the Start >
Programs > Hirschmann > BAT Discovery menu.

The following dialog box is displayed:

The Hirschmann BAT Discovery identifies the BAT 11bs
installed in your network.

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One or several BAT 11bs were found in the network.

4. Double-click the MAC address of the
BAT 11b to be configured in the list.

37BAT 11b

The Basic Configuration

You can find the MAC address at the side of the device
on a label which contains the main device specifica­tions.

These comprise: the MAC address of the Ethernet inter­face, the item number, and the device type.

The following dialog box is displayed:

5. Enter the network parameters (Node name, Address,
Subnetmask, and Standard gateway) and confirm them
with OK.

Note:
The parameter Node name may consist of 32 characters, as a

maximum.
When entering the parameter Node name, only the letters

from “a” to “z”, “A” to “Z”, the digits “0” to “9”, the hyphen “­”, and the dot “.” must be used to avoid errors caused if other
systems interpret the parameter Node name. The first charac­ter has to be a letter, the last character must not be a dot “.” or
a hyphen “-”. A single character is not permitted as a name.

Your BAT 11b can now be reached with its IP address over the
Ethernet via a web browser and can be configured (see Sec­tion The User Interface of the BAT 11b in the AP Mode

).

38 BAT 11b

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The Main Parameters

The following chapter introduces the main parameters of the
BAT 11b configuration and briefly illustrates them. That way,
you will gain an insight into the configuration options of the
BAT 11b.

Changing the Password

To prevent unauthorized access, you should change the pass­word as soon as possible. You can find a detailed description
of the AP mode in Section Configuration: Administration

Page 3–80
istration on Page 4–106.

The Main Parameters

on

, of the AC mode in Section Configuration: Admin-

Setting the Network Name

In contrast to LANs which have been configured via Ethernet, a
wireless LAN does not provide cabling to permit a permanent
connection between server and clients. This is why malfunc­tions or access violations can occur in directly adjacent wire­less networks.

In order to prevent this, there is a parameter comparable to a
domain name in each wireless network which clearly identi­fies the network. Only clients where the network configuration
matches that of the BAT 11b can communicate in this WLAN.
For more information on the AP mode, refer to Section Config-

uration: Wireless Interface on Page 3–70, on the AC mode to

Section Configuration: Wireless Interface

on Page 4–98.

Release 1.0 03/04

39BAT 11b

Selecting the Frequency

Selecting the Frequency

Although wireless networks can be logically separated by set­ting the Network Name, they can still physically interfere with
each other if they are operated on the same radio channel or
on channels which are close together.

Consequently, if you operate two or more wireless networks
within short distance, it is advisable to assign different chan­nels to the networks. Since a network also allocates a part of
its adjacent channels, these channels should be at least 4
channels apart from each other. For more information on the
AP mode, refer to Section Configuration: Wireless Interface

Page 3–70
less Interface on Page 4–98.

on

, on the AC mode to Section Configuration: Wire-

Activating the Encryption

To prevent the data transmitted via radio technology from
being eavesdropped easily, you should activate the encryp­tion. In the process, the same key will be entered at all sta­tions or clients of a wireless network. Basically, there are two
key lengths: 64 bits (corresponds to a 40-bit-effective key)
and 128 bits (corresponds to a 104-bit-effective key). If all cli­ents used support 128-bit encryption, you should activate it.
For detailed information, refer to the AP mode in Section Con-

figuration: Security on Page 3–75, to the AC mode in Section
Configuration: Wireless Interface

on Page 4–98.

40 BAT 11b

Release 1.0 03/04

2

The Hirschmann BAT Discovery

This chapter describes additional configuration options for
the Hirschmann BAT Discovery, which go beyond the basic
configuration (see Section The Basic Configuration

Page 1–37

The basic configuration comprises the following settings:

•Entering the name

• Entering the IP address

• Entering the netmask

• Entering the standard gateway

Further configurations which can be performed via the Hir­schmann BAT Discovery are:

).

The Hirschmann BAT Discovery

on

•Setting up a Telnet connection

•Setting up a Web connection

• Firmware upgrading

• Restart (restarting the BAT 11b)

• Resetting to the BAT 11b factory default settings

Prerequisite:
The PC with a Windows operating system, which you use to

configure your BAT 11b, has to be connected to the same
network as the BAT 11b to be configured.

BAT 11b

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41

The Hirschmann BAT Discovery

Working with the BAT Discovery

• The computer has to be provided with a working and sensi­bly configured TCP/IP stack.

• If the router does not forward multicasts, the search func­tion is limited to the subnetwork of the PC where the BAT
Discovery is installed.

• The BAT 11b can only be configured via a password.
For safety reasons, it is recommended to change the preset

passwords as soon as possible.

• If your computer is provided with various network inter­faces, you can configure a special multicast interface in the
Hirschmann BAT Discovery with which you can search for
the BAT 11b (see How to Determine a Multicast Interface

Page 2–42

on

).

How to Determine a Multicast Interface

If the PC on which the BAT Discovery is installed is provided
with various network interfaces, you can use this function to
determine via which interface BAT 11b are searched.

1. To select a multicast interface manually, go to Extras >

Options.
The following dialog box is displayed:

42 BAT 11b

Release 1.0 03/04

The User Interface of the BAT Discovery

M

2. Select the IP address of the NIC which you want to use
as a multicast interface and confirm by pressing OK.

If the multicast interface 0.0.0.0 is defined, the search
is performed via all network interfaces of the PC.

The User Interface of the BAT Discovery

The user interface of the BAT Discovery consists of four com­ponents which will be explained in the following:

enu

Main window

Tool bar

Status bar

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43BAT 11b

The Main Window

The Main Window

The Menu

If the BAT Discovery is started the main window is empty at
first. It is designed like a table and is divided into the columns
MAC address, Node name, IP address, and State. According to
the configuration, it also contains the columns FwVer and Pro-
duct name. As soon as BAT 11b have been searched for and
identified in the network, the corresponding data on the
respective device will appear in these columns.

The menu is located at the upper margin of the BAT Discovery
and contains the menu items File, View, Configuration, Extras,
and Help with up to 9 items each. The numerous functions
which can be activated via this menu will be discussed in
detail later on in this chapter.

The Tool Bar

The Status Bar

The tool bar is located directly below the main window and
provides fast access to Discovery, IP-Setup, and Load firm-
ware, the three main functions of the BAT Discovery. These
three functions, which can also be selected via the menu, will
be illustrated in detail in the following.

1. Select View > Tool Bar to show or hide the tool bar.

The status bar at the lower margin of the window displays the
current status of the BAT Discovery, as well as a short descrip­tion of the menu item above which the mouse pointer is cur­rently located. The window shows the number of BAT 11b
found and the progress of the search. The latter applies only
to menu items which were called via a function, e.g. Discovery.

44 BAT 11b

Release 1.0 03/04

The Functions of the BAT Discovery

1. Select View > Status Bar to show or hide the status bar.

The Functions of the BAT Discovery

Searching for Available BAT 11b

The search options can be set via the Extras> Options menu
item.

Release 1.0 03/04

In the main menu, you can display information on the product
name and the device version if you check the corresponding
box.

If you want to enable automatic discovery, check the corre­sponding box. In the drop-down list below, you can select val­ues from 10 to 60 seconds. After the expiration of this time
interval, the BAT Discovery is automatically restarted.

You can abort the discovery process after a determined time
interval. In small networks with only a few BAT 11b, for
instance, you can reduce this time span to 3 seconds. The
maximum value is 10 seconds.

45BAT 11b

Searching for Available BAT 11b

After performing all settings, click OK to take over these set­tings.

The Discovery function can be activated both via File > Disco-
very or directly via the Discovery button in the tool bar.

The BAT Discovery will then automatically identify those BAT
11b which have been installed in the network and display
them in the main window together with the corresponding
parameters (MAC address, Node name, IP address). According
to the setting of the options, the firmware version (Fw Ver) and
the product name (Product name) will also be displayed.

In the State column, the following entries are possible:

• discovered: discovered by the BAT Discovery

• not found: BAT 11b was not found in new search.
The subsequent brackets may contain the following additional

information:

• (MAC): Means that a BAT 11b was found via the BAT Discov­ery protocol, but is not reachable via IP. For instance, this
will happen if the BAT 11b still has the default setting

0.0.0.0 or an invalid IP configuration.

• (IP): Means that the device is not reachable via the BAT Dis­covery protocol, but can be addressed via IP. This will
mostly happen if the IP configuration of the BAT 11b does
not correspond to the current subnetwork, e.g. because a
BAT 11b has been entered manually.

46 BAT 11b

Release 1.0 03/04

• (*): Means that the device was found via the BAT Discovery
protocol and is reachable via IP.

• [Time] (only if not found): Specifies the period of time
passed since the last successful search process. This time
specification is only updated when a search process is car­ried out either manually or automatically, according to the
individual settings.

Editing Entries Manually

Under File > Edit, you can choose between the functions Add
BAT 11b, Delete BAT 11b, and Delete all BAT 11b.

Editing Entries Manually

How to Add a BAT 11b Manually

1. Select File > Edit > Add BAT 11b.

A dialog box is opened in which you can enter the IP
address of the BAT 11b to be added.

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47BAT 11b

How to Delete BAT 11b Entries

2. Confirm the entry by clicking the OK button. The manu­ally added BAT 11b will now appear in the list displayed
in the main window.

How to Delete BAT 11b Entries

Manually added BAT 11b and all BAT 11b marked as not found
can be deleted from the list.

1. Select the MAC address of the entry to be deleted.

2. Select File > Edit > Delete BAT 11b. Alternatively, you can
also press the “Del” button on your keyboard.

Hinweis:
Entries (discovered state) which have been created automati-

cally by the Discovery function cannot be deleted in this way.

How to Delete all BAT 11b Entries of the “not found” State

Select File > Edit > Delete all BAT 11bs to simultaneously delete
all entries marked as not found from the list in the main win­dow.

How to Save and Load the Configuration

The BAT Discovery, version 2.08 and higher, additionally
offers you the option to save the configuration of the device
and to load it on demand. Please note that this function works
in a trouble-free way with firmware version 3.10 and higher.
Select Configuration > Save config or Configuration > Load con­fig in the BAT Discovery menu.

Note:
Passwords and IP settings which you have already assigned

will not be considered in this process.

48 BAT 11b

Release 1.0 03/04

The Basic Configuration

1. To configure a BAT 11b, select the corresponding entry
in the main window.

2. To be able to use all functions, enter the password for
the BAT 11b (see Section Entering the Password

3. Select Configuration > IP-Setup or click the IP-Setup...
button in the tool bar.

Entering the Password

The password is required to use the following functions of the
BAT Discovery:

The Basic Configuration

).

• Load firmware

• How to Restart the BAT 11b

•Factory default

•IP-Setup
To enter the password, proceed as follows:

1. Select the BAT 11b in the list and select Extras > Pass-
word.

Release 1.0 03/04

2. Enter the password for the BAT 11b.
The factory-set password for the administrator user

level is admin.
If the Assign to all BAT 11b option is checked, the pass-

49BAT 11b

How to Set up a Web Connection

word is assigned to all other BAT 11b, as well.
If the BAT Discovery is exited, the password has to be
reentered when restarting the BAT Discovery.

You can change the password via the BAT 11b user interface.
For the BAT 11b in the AP mode, refer to Section Configuration:

Administration on Page 3–80, for the BAT 11b in the AC mode,

see Section Configuration: Administration

How to Set up a Web Connection

1. In the main window, select the BAT 11b which you want
to access via the Web (browser-based interface) and
select Configuration > Advanced > Web. Alternatively,
you can select the Web function with the right mouse
button.

on Page 4–106.

2. A browser window is opened.
The following dialog box appears:

3. Enter the Password and click the Login button. The fac­tory-set password is: admin.

You can change the password via the BAT 11b user interface.
For the BAT 11b in the AP mode, refer to Section Configuration:

Administration on Page 3–80, for the BAT 11b in the AC mode,

see Section Configuration: Administration

on Page 4–106.

50 BAT 11b

Release 1.0 03/04

If you have forgotten your password, refer to Section How to

Reset the Password in the Annex on Page 122.

How to Upgrade the Firmware

Caution!
During the BAT 11b upgrade, you must neither turn off the BAT
11b nor interrupt the data connection. Otherwise, the BAT 11b
software will be damaged. You will then have to return the BAT
11b to the manufacturer.

1. Before upgrading, make sure that the new firmware
version (files ending with *.afw) is available on your
hard disk or on another data carrier.

How to Upgrade the Firmware

2. Under Extras > Password, enter the password of the
admin user level if this has not been done yet. Other­wise, an update will not be possible.

3. In the main window of the BAT Discovery, select the BAT
11b which you want to upgrade and select Configura-
tion > Load firmware... Alternatively, you can right-click
the Load firmware option or activate the Firmware func­tion from the tool bar.

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51BAT 11b

How to Upgrade the Firmware

4. In the new dialog box, activate the Load firmware file
from disc... button.

5. Select the file which contains the new Firmware. In our
example this is sm_sc-v1_34.afw, the lower file in the
window.

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Release 1.0 03/04

How to Upgrade the Firmware

6. Confirm by clicking the Open button.
The path for the firmware in the control box under Firm-

ware file is automatically updated, and the BAT Discov­ery checks whether an upgrade is possible and makes
sense.

Release 1.0 03/04

7. Boot the firmware upgrade by clicking the Load firm­ware file button. Under Status, a progress bar and the

current process are displayed.

53BAT 11b

How to Upgrade the Firmware

8. As soon as the firmware upgrade has been finished
successfully, the following dialog box appears:

You can choose between a simple restart of the BAT
11b, a restart with a simultaneous reset of the configu­ration to the factory defaults, or a restart at a later point
of time.

Hinweis:
The BAT Discovery has already selected the option you

require. If the Restart immediately (recommended)
option is activated, you can also check the Reset confi-
guration and restart. option to reset the BAT 11b to the
factory settings.

Caution!
If the BAT Discovery proposes the Reset configuration

and restart. option, you must never select the Restart
immediately (recommended) option.

9. To restart the BAT 11b, confirm by clicking OK.

Hinweis:
The restart of the BAT 11b (takes about 20 seconds) is not dis-

played on your computer screen. With the help of the LEDs of
your BAT 11b, however, you can check the radio activity, the
radio status, and the Ethernet activity.

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Release 1.0 03/04

How to Reset the BAT 11b to the Factory Defaults

10. Finally, check the functionality of the BAT 11b via the
BAT Discovery, e.g. by searching for BAT 11b installed in
the network.

How to Reset the BAT 11b to the Factory Defaults

1. To cancel configurations made and to reset the BAT 11b
to the factory defaults, select Configuration > Factory
default.

A reset will be performed automatically.

Note:
The complete configuration of the BAT 11b will be reset to the

factory default settings. Only the password will be main­tained.

How to Restart the BAT 11b

1. Select Configuration > Restart to restart the BAT 11b.

How to Exit the BAT Discovery

1. Select File > Exit to exit the BAT Discovery.

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55BAT 11b

How to Exit the BAT Discovery

56 BAT 11b

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The User Interface of the BAT 11b in the AP Mode

The User Interface of the BAT 11b in the AP Mode

This chapter describes the structure of the Web-based user
interface and explains how to start it. The browser inter­face is dependent on the browser used, not on the operat­ing system. (Internet Explorer, Netscape, Opera, etc.). In
the below example, the Internet Explorer was used for the
purpose of configuration.

How to Start the User Interface

You have 2 options to start the Web interface:

• Starting directly via the browser

• Starting via the Configuration menu in the BAT Discov-
ery

Option 1—Starting via the Browser

1. Start the browser which you normally use, e.g.

Microsoft Internet Explorer.

2. Enter the following into the address line:

http://<IP address of the BAT 11b>
e.g.: http://192.168.1.51

Option 2—Starting via the BAT Discovery

1. In the main window of the BAT Discovery, select the

BAT 11b which you want to access via the Web (Web­based interface) and select the Configuration >
Advanced > Web menu or use the right mouse button
and select the Web menu in the pop-up list.

BAT 11b

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57

How to Start the User Interface

In the browser window, you are requested to enter the admin­istrator password:

Enter the Password and click the Login button. The factory-set
password is: admin.

You should change the password under the Configuration:

Administration menu item.

If you have forgotten your password, refer to Section How to

Reset the Password in the Annex on Page 122.

58 BAT 11b

Release 1.0 03/04

Status

Status

After a successful log-on, a status window is displayed which
presents all vital data at one glance:

In the navigation bar to the left, you can select and go to vari­ous configuration processes.

If you click the log-out button, the browser session will be ter­minated and you will have to log on once again when starting
the browser.

If you click the help button, you will open an online help.

General

• Nodename:
This is the name of the BAT 11b Workgroup, as it is also displayed
in the BAT Discovery. It serves to localize the devices and can be
assigned almost freely. In the state as delivered, the node name
consists of “node_” and the MAC address of the BAT 11b.

• Firmware Version:
It shows the firmware status currently installed on the BAT 11b.
Firmware upgrades should only be made if problems occur with
the currently used firmware or if a newer firmware version with

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59BAT 11b

Status

desired new features is available. A firmware upgrade can be
made under How to Upgrade the Firmware

on Page 2–51.

LAN

• MAC Address:
This is the hardware address of the BAT 11b Workgroup.

• IP Address Mode:
DHCP or Static IP address: Specifies whether the IP address was
determined statically or assigned by a DHCP server.

•IP Address
The IP address is the unambiguous IP address of the BAT 11b
Workgroup.

•Subnet mask
The subnet mask, which is also referred to as IP mask or netmask,
masks the IP address section in your network.

• Default Gateway
Shows the IP address of your default gateway.

Wireless LAN

•Network name
The network name serves to logically assign clients, which is also
referred to as SSID. Only clients with the same network name are
granted access.

• Channel
In this field, the active channel is specified which is shared by all
devices connected to this BAT 11b Wireless Ethernet. According to
the country code, up to 13 channels are available. As the factory
setting, channel 6 is preconfigured.

•Security:
Specifies whether WEP encryption has been activated in the BAT
11b Wireless Ethernet.

Associated Clients

• Wireless clients (notebooks, desktop PCs, PDAs, etc.) can log on
to the BAT 11b Wireless Ethernet. The list of the logged-on clients
specifies the MAC addresses of the clients. The right column

60 BAT 11b

Release 1.0 03/04

Status

indicates the authentication status of each client according to
IEEE802.1x.

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61BAT 11b

Configuration: Statistics

Configuration: Statistics

The access point provides a large range of statistic informa­tion, which will be described in detail in the following.

62 BAT 11b

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Configuration: Statistics

LAN Statistics:

• TX Total
Total number of packets sent successfully.

• TX Dropped
Total number of dropped packets; refers to the packets to be
sent.

•TX Collision
Total number of packets which were dropped due to collisions on
the medium; refers to the packets to be sent.

• TX Late Collision
A late collision indicates that another system attempted to
transmit after your machine (the one displaying the message) has
transmitted at least the first 60 bytes of its frame (packet) Since
the amount of time it takes to send 60 bytes (50.2 microseconds)
is long enough for round trip propagation delay on even the
largest network, a correctly configured network will never allow
this transmission condition. Something related to the network
topology is causing a problem.
A late collision invariably indicates that one or more packets were
lost by the Ethernet. They will almost always be retransmitted by
the “higher network layers,” but only after a delay.

• TX Excessive Collision
Total number of packets where collisions occurred repeatedly.

• TX Total
Total number of packets received successfully.

• RX Dropped
Total number of dropped packets; refers to the packets to be
received.

•RX Overflow
Total number of packets which were dropped due to insufficient
buffer; refers to the packets to be received.

• RX Too Long
Total number of packets whose length exceeds the standard
Ethernet packet length (> 1518 bytes).

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63BAT 11b

Configuration: Statistics

• RX FCS Errors

• RX Length Errors

•RX Alignment Errors

WLAN Statistics

• TX Unicast Frames

Total number of packets received with FCS (Frame Check
Sequence) errors.

Total number of packets whose length does not correspond to the
length specified in the Ethernet packet length field.

Counter is currently not used.

The total number of frames, of which the Destination Address is a
unicast MAC address, transmitted successfully. This implies
having received an acknowledgment to all associated frames.

• TX Multicast Frames
The total number of frames, of which the Destination Address is a
multicast MAC address (including the broadcast MAC address),
transmitted successfully. When operating as a station in an
wireless cell, and these frames are directed to the AP, this implies
having received an acknowledgment to all associated frames.

•TX Fragments
The total number of frames of type Data or Management delivered
successfully; i.e. directed frames transmitted and being ACKed,
as well as non-directed frames transmitted.

• TX Unicast Octets
The total number of octets transmitted successfully as part of
successfully transmitted unicast frames. These octets include
MAC Header and Frame Body of all associated fragments.

• TX Multicast Octets
The total number of octets transmitted successfully as part of
successfully transmitted multicast (incl. broadcast) frames.
These octets include MAC Header and Frame Body of all
associated fragments.

• TX Deferred Transmissions
Number of frames for which (one of) the (fragment) transmission
attempt(s) was one or more times deferred to avoid a collision.

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Release 1.0 03/04

Configuration: Statistics

•TX Single Retry Frames
The number of frames successfully transmitted after one (and
only one) retransmission (on the total of all associated
fragments).

• TX Multiple Retry Frames
The number of frames successfully transmitted after more than
one retransmission (on the total of all associated fragments).

• TX Retry Limit Exceeded
Number of times a frames is not transmitted successfully
because the retry limit (either the ShortRetryLimit or the
LongRetryLimit) is reached, due to no acknowledgment or CTS
received.

•TX Discards
The number of transmit requests that were discarded to free up
buffer space.

• Transmit queued too long on one of the transmit queues, due to
many retries and defers, or otherwise not being able to transmit
(e.g. scanning).

• Transmit queued too long on the Power-Save queue
(Station in IBSS: destination station does not respond to ATIM
(Announcement Traffic Indication Message);
AP: station does not poll or wake up in time).

• RX Unicast Frames
The total number of frames, with a unicast MAC address as the
Destination Address, received successfully.

• RX Multicast Frames
The total number of frames, with a multicast MAC address
(including the broadcast MAC address) as the Destination
Address, received successfully.

•RX Fragments
The total number of frames of type Data or Management received
successfully.

• RX Unicast Octets
The total number of octets received successfully as part of
unicast frames. These octets include MAC Header and Frame
Body of all associated fragments.

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65BAT 11b

Configuration: Statistics

• RX Multicast Octets

• RX FCS Errors

• RX Discards no Buffer

• TX Discards Wrong SA

The total number of octets received successfully as part of
multicast (incl. broadcast) frames. These octets include MAC
Header and Frame Body of all associated fragments.

Number of frames, considered to be destined for this station
(Address1 matches), received with an FCS (Frame Check
Sequence) error.
This does not include “things” received with an incorrect CRC in
the PLCP) header. These are not considered frames.

The number of received frames that were discarded because of
lack of buffer space.

The number of transmit requests that were discarded because of
wrong Source Address (Source Address not equal to
OwnMACAddress). This only applies to stations.

• RX Discards WEP Undecryptable
The number of received frames, with the WEP subfield in the
Frame Control field set to one, that were discarded because it
should not have been encrypted or due to the receiving station
not implementing the privacy option.

• RX Message in Messagefragments
The total number of frames of type Data or Management received
successfully, while there was another good reception going on
above the carrier detect threshold.

• RX Message in Bad Messagefragments
The total number of frames of type Data or Management received
successfully, while there was another reception going on above
the carrier detect threshold but with bad or incomplete PLCP
Preamble and Header.

• RX Discards WEP ICV Error
The number of received frames, with the WEP subfield in the
Frame Control field set to one, that were discarded because the
value in the ICV field of the received frame does not match the ICV
value that is calculated for the contents of the received MPDU.

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• Rx Discards - WEP Excluded
The number of received frames, with the WEP subfield in the
Frame Control field set to zero, that were discarded because
encryption is required.

Configuration: LAN Interface

Configuration: LAN Interface

Here, you can configure the LAN parameters of the BAT 11b
Wireless Ethernet.

• IP Address Mode
Check the DHCP option to have the IP settings automatically
assigned to the BAT 11b Wireless Ethernet by the available DHCP
server. To configure the settings statically, check the Static
option and enter the values manually. If no DHCP server is found
in the network, the BAT 11b Wireless Ethernet will take over the
statically set values.

•IP Address
Enter an unambiguous IP address of your network. This address
may be 192.168.1.15, for instance, if the network concerned is a
private network. In this case, you do not require a commercially
available address from your Internet provider.

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67BAT 11b

Configuration: LAN Interface

•Subnet Mask
The subnet mask has to be identical with the one of your Ethernet
network. By default, you can enter 255.255.255.0.

• Gateway
Specifies the IP address of the default gateway. As a rule, this a
router or a PC with Internet access.

•Nodename
Name of the BAT 11b Wireless Ethernet. Serves for easy
identification via the Hirschmann BAT Discovery. In the state as
delivered, the node name consists of “node_” and the MAC
address of the BAT 11b.

If you want to take over the settings made, confirm this by
clicking Save. Otherwise, you can discard the changes by
clicking Cancel. To take over the changes and activate them,
the BAT 11b Wireless Ethernet has to be rebooted.

You are requested to do this via the following message:

Confirm this message by clicking Reboot. You are requested
once again to terminate all existing connections and browser
sessions via a reboot. The reboot process takes a few
seconds; subsequently, the BAT 11b Wireless Ethernet will be
ready for operation again.

Confirm with OK. You will then have to log on again.

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Configuration: LAN Interface

Hinweis:
The restart of the BAT 11b (takes about 20 seconds) is not

displayed on your computer screen. With the help of the LEDs
of your BAT 11b, however, you can check the radio activity, the
radio status, and the Ethernet activity.

Finally, check the functionality of the BAT 11b, for instance by
searching for BAT 11bs installed in the network via the BAT
Discovery.

Release 1.0 03/04

69BAT 11b

Configuration: Wireless Interface

Configuration: Wireless Interface

Here, you can configure the LAN parameters of the BAT 11b
Wireless Ethernet.

• Wireless Network Name
The network name (also called SSID) is an unambiguous network
name which has to be identical for all subscribers of the same
wireless network. Capital and lower case writing are
distinguished. As a maximum, the network name consists of 32
alphanumerical characters. Make sure that all subscribers of the
wireless network use the same network name.

70 BAT 11b

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Configuration: Wireless Interface

•Regulatory Domain
For the operation of the access client, country-specific
regulations referring to the selectable channels have to be
observed. Specify the country or region where the device is to be
operated.

•Channel
Select a channel from the list of the available channels. Clients
log on to the channel of the access point if they support this
channel according to their country-specific settings. The factory­set value is channel 6. If you wish to use channels 12 and 13,
please make sure beforehand that the corresponding clients do
support these channels and that the correct regulatory domain
has been selected. As a rule, this applies to products which can
also be operated in the USA, since there only channels 1 to 11 are
admitted.
Note: The number of the available channels is not identical for all
devices. You should therefore also refer to the technical
documentation for your product. As a rule, channels 1 to 11 are
mostly available.

• Transmission Rate
The transmission rate should be adapted to your wireless
network. As a rule, this is done automatically. Under certain
circumstances, however, it is necessary to do this according to
the procedure described below. The range of a wireless network
decreases with higher data rates and increases with lower data
rates.

Auto fallback 11, 5.5, 2, 1 Mbps

— Automatic fallback according to the quality of the connection,
starting with 11 Mbps, going down to 5.5 Mbps, 2 Mbps, and 1
Mbps. This is the most frequently used setting.

Auto fallback 5.5, 2, 1 Mbps

— Automatic fallback according to the quality of the connection,
starting with 5.5 Mbps, going down to 2 Mbps and 1 Mbps.

Auto fallback 2, 1 Mbps

— Automatic fallback according to the quality of the connection,
starting with 2 Mbps, going down to 1 Mbps.

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Configuration: Wireless Interface

Fixed 1 Mbps

— Sets the data rate to 1 Mbps. This setting can be used to
optimize the range for lower data rates.

Fixed 2 Mbps

— Sets the data rate to 2 Mbps.

Fixed 5.5 Mbps

— Sets the data rate to 5.5 Mbps.

Fixed 11 Mbps

— Sets the data rate to 11 Mbps. This setting makes sense only if
all wireless clients are operated at a short distance and reach
optimum quality of connection.

If you want to take over the settings made, confirm this by
clicking Save. Otherwise, you can discard the changes by
clicking Cancel. To take over the changes and activate them,
the BAT 11b Wireless Ethernet has to be rebooted.

Advanced Configuration

• RTS Threshold
RTS means Request To Send and is the threshold value from
which on the access point will send an RTS signal into the
wireless cell. For this value, the default setting 2347 should be
used. You should use slightly minor values only if an irregular
data flow is observed. The smaller the value, the more bandwidth
will be lost for RTS signals. As a result, the data rate of the
wireless cell will decrease.

• DTIM Interval
This value specifies the interval for the Delivery Traffic Indication
Message (DTIM). The DTIM field is a countdown field which
informs the clients via the window on the next broadcast or
multicast transmission. If the clients are operated in the power­saving mode, they will wake up in time and will receive the data.
The default value is 1. The value can be configured from 1 to

65535.

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Configuration: Wireless Interface

•AP Distance
The AP distance is the size of the wireless cell and the number of
the clients contained. This value serves to optimize the roaming
behavior of the clients. The value can be set from 1 to 5. The
default value is 1. Higher values indicate a higher access point
density.
1: Large: Only one access point within reach
2: Medium
3: Small: Some access points within reach
4: Mini
5: Micro: Many access points within reach

• Multicast Rate
The multicast rate, i.e. the data rate at which multicast packets
are sent, should be configured in such a way that the multicasts
can be received by all subscribers located in the wireless cell. The
data rate for multicasts is set to a fixed value and therefore
depends on the properties of the wireless cell and its clients. In
the case of very small cells with clients whose radios support at
least 11 Mbps, it can be set to
cells or cells with older clients which support merely 1 or 2 Mbps,
a slower rate of

Fixed 1 Mbps or Fixed 2 Mbps is recommended.

The default value is Fixed 2 Mbps.

Fixed 11 Mbps. In the case of large

•Load Balancing
This setting refers to wireless networks with several access
points. Per default, load balancing is active. In this case, the
beacons of the access point transmit information on the logged­on clients and the cell utilization of the access point in regular
intervals. A client can compare this information to the load
balancing information of other access points within reach and
decide independently whether roaming to a weaker access point
with less data traffic makes sense.

• Microwave Robustness
In environments with strong interferences caused by other
devices using the 2.4 GHz band, the data rate may be affected.
Although the activation of microwave robustness reduces the net
throughput in an interference-free environment, it may increase
the throughput in an environment with strong interferences,
since the packets are fragmented. This means that the packets
are split into small fragments which can be transmitted more

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73BAT 11b

Configuration: Wireless Interface

quickly. Consequently, the probability of a collision or
interference during the transmission decreases.

•Medium Distribution
If Medium Distribution is activated, the values AP Distance,
Microwave Robustness, and RTS Threshold are transmitted along
with the beacons of the access point. Per default, Medium
Distribution is activated. This feature is supported by all
Hirschmann 11 Mbps products and by Agere cards .

• Powersave Multicast Buffering
If you are using clients with activated power-saving mode, check
this box. Multicasts are then buffered and sent in dependence on
the SDTIM interval.

•Repeating
Permits direct communication between wireless clients logged
on to the same BAT 11b. If the repeating is deactivated, the
wireless clients logged on to this BAT 11b will not be able to
exchange data among each other. This feature can be used to
achieve a higher degree of security if no client of the wireless cell
is to have direct contact to other clients in the same wireless cell.

•Radio on
This feature makes it possible to disable the wireless cell of the
BAT 11b deliberately. It can still be addressed via the Ethernet
interface.

• Enable Configuration Over WLAN
The configuration of the BAT 11b over the WLAN interface can be
disabled, for instance in order to increase security against
misuse. In this case, communication and, consequently,
configuration via web browser and BAT Discovery are only
possible over cable.

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Configuration: Security

Configuration: Security

Release 1.0 03/04

Parameters like visibility of the BAT 11b, authentication, and
encryption are set here. These settings are used for security
reasons in terms of tracking, eavesdropping, and intrusion of
unauthorized clients.

75BAT 11b

Configuration: Security

You should set the AP visibility to Invisible and set the WEP to
128 bits, provided that all clients operated in the wireless net­work can work with these settings. A RADIUS server offers
additional protection.

AP Visibility

• Visibility Status
The visibility status is also referred to as SSID broadcast. Visible
means that the BAT 11b Wireless Ethernet sends its network name
in regular intervals. On the one hand, this makes it easier for new
clients to find the network via the scan function, on the other
hand, attacks can be carried out more easily. If you do not require
this function by all means, switch over to Invisible and, thus,
“hide” your network.

Note: If you are using Site Survey, e.g. Netstumbler or the

Windows XP Zero Configuration Utility, the BAT 11b Wireless
Ethernet will not be identified if you have switched the AP
visibility to Invisible.

WEP Configuration

WEP is an encryption standard for wireless LANs. You should
activate WEP to increase the safety of your network against
eavesdropping.

• Security
You can choose between none and WEP. If you activate WEP,
identical WEP keys have to be entered at the access point and the
connected stations.

•WEP Key Lengths
Select 64 or 128 bits from the pull-down menu, according to the
encryption procedure supported by your clients. If all clients
support 128-bit WEP, you should use 128 bits.

• Enter WEP key in
Use the pull-down menu to configure which entry mode you
prefer. You can choose between HEX (hexadecimal entry,
characters “0” to “9” and “A” to “F”) and ASCII (all ASCII
characters on your keyboard).

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Configuration: Security

•WEP Key 1-4
In the input fields WEP key 1 to WEP key 4, you can enter 4
different WEP keys.

• WEP key to use
The WEP key to use pull-down menu serves to configure the key
(1-4) used by default for sending.

• Deny unencrypted data
With this option, you can determine whether the BAT 11b Wireless
Ethernet should also accept unencrypted packets sent from
clients. Do only activate this function if you are using clients
which do not support encryption.

•Authentication
Open: All clients can log on to the BAT 11b Wireless Ethernet,
independent of the fact whether they transfer data in encrypted
or unencrypted mode.
Shared key: Only clients with activated WEP encryption can log
on to the BAT 11b Wireless Ethernet.

Please note that all subscribers of the same wireless network
have to use the same keys.

If you want to take over the settings made, confirm this by
clicking Save. Otherwise, you can discard the changes by
clicking Cancel. To take over the changes and activate them,
the BAT 11b Wireless Ethernet has to be rebooted.

802.1x Configuration

• Authentication On
Check the checkbox in order to activate authentication according
to IEEE802.1x.

• Radius Server IP Address
Enter the IP address of the RADIUS server to be used.

•Radius Port
If you do not wish to use another port than 1812 for your RADIUS
server, you can change it here.

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• Reauthentication Time [min]
The authentication of each client is periodically checked for
validity. The default value is 60 minutes and can be adapted. Very

77BAT 11b

Configuration: Security

•Shared Secret

•Send Station ID

short periods may cause a higher load on your network, very long
periods may delay the reaction to RADIUS account changes.

In order to communicate with the RADIUS server, the BAT 11b
requires the shared secret, i.e. a password which also has to be
entered at the RADIUS server.

The optional attribute 31 “Calling Station ID” can be transferred
via the Radius protocol. If you check this checkbox, the BAT 11b
forwards the MAC address of the client to the Radius server.

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Configuration: ACL

Configuration: ACL

Release 1.0 03/04

Here, the access to the wireless network can be limited to spe­cific, known clients. The settings are used to prevent active
data traffic from or to undesired or unknown clients.

• Enable Access Control List
Activate this function to grant access to the BAT 11b Wireless
Ethernet only to the wireless clients given in the list. All other
clients will not be able to communicate with the BAT 11b Wireless
Ethernet.

• MAC Address 1 to 16
Here, you should enter the individual MAC addresses of the
clients. The entries must have a length of 12 characters and have
to be hexadecimal. 0001CDACEF00

79BAT 11b

Configuration: Administration

If you want to take over the settings made, confirm this by
clicking Save. Otherwise, you can discard the changes by
clicking Cancel.

Configuration: Administration

The Administration section contains the following subsec­tions:

•Reboot
Here, you can reboot the BAT 11b. This is required, for instance,
after many changes in the configuration to activate the changes.

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Configuration: Administration

• Reset Configuration
Resetting the configuration makes sense if you do not wish to
reset all configuration data to factory default state.
Note: If you use the Reset Configuration option, the following
parameters will not be reset: password, IP settings, and node
name.

• Reset to Factory Default
Resets all BAT 11b Wireless Ethernet configuration data to the
factory default state.

Change Password

For security reasons, it is recommended to change the preset
passwords as soon as possible.

Enter the new password subsequently two times into the cor­responding input fields and confirm your entries by clicking
the Save button.

The new password will become valid upon the next log-on
attempt.

Caution:
If you forget the password, it will be lost. This is because pass­words cannot be reset to the factory defaults via Reset Confi-
guration. If you have forgotten your password, refer to Section

How to Reset the Password

in the Annex on Page 122.

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81BAT 11b

Configuration: Administration

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The User Interface of the BAT 11b in the AC Mode

The User Interface of the BAT 11b in the AC Mode

This chapter describes the structure of the Web-based user
interface and explains how to start it. The browser inter­face is dependent on the browser used, not on the operat­ing system. (Internet Explorer, Netscape, Opera, etc.). In
the below example, the Internet Explorer was used for the
purpose of configuration.

How to Start the User Interface

You have 2 options to start the Web interface:

• Starting directly via the browser

• Starting via the Configuration menu in the BAT Discov-

ery

Option 1—Starting via the Browser

1. Start the browser which you normally use, e.g.
Microsoft Internet Explorer.

2. Enter the following into the address line:
http://<IP address of the BAT 11b>
e.g.: http://192.168.1.51

Option 2—Starting via the BAT Discovery

1. In the main window of the BAT Discovery, select the
BAT 11b which you want to access via the Web (Web­based interface) and select the Configuration >
Advanced > Web menu or use the right mouse button
and select the Web menu in the pop-up list.

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83

How to Start the User Interface

In the browser window, you are requested to enter the admin­istrator password:

Enter the Password and click the Login button. The factory-set
password is: admin.

You should change the password under the Configuration:

Administration menu item.

If you have forgotten your password, refer to Section How to

Reset the Password in the Annex on Page 122.

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Status

Status

After a successful log-on, a status window is displayed which
presents all vital data at one glance:

In the navigation bar to the left, you can select and go to vari­ous configuration processes.

If you click the log-out button, the browser session will be ter­minated and you will have to log on once again when starting
the browser.

If you click the help button, you will open an online help.

General

•Nodename:
This is the name of the BAT 11b, as it is also displayed in
the BAT 11b Manager. It serves to localize the devices and
can be assigned almost freely. In the state as delivered,
the node name consists of “node_” and the MAC address
of the BAT 11b.

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Status

•Firmware Version:
It shows the firmware status currently installed on the BAT
11b. Firmware upgrades should only be made if problems
occur with the currently used firmware or if a newer
firmware version with desired new features is available. A
firmware upgrade can be made under How to Upgrade the

Firmware on Page 2–51.

LAN

• MAC Address:
This is the hardware address of the BAT 11b Wireless
Ethernet.

• IP Address Mode:
DHCP or Static IP address: Specifies whether the IP
address was determined statically or assigned by a DHCP
server.

• IP Address:
The IP address is the unambiguous IP address of the BAT
11b Wireless Ethernet.

•Subnet Mask:
The subnet mask, which is also referred to as IP mask or
netmask, masks the IP address section in your network.

•Default Gateway:
Shows the IP address of your default gateway.

Wireless LAN

• Network Name:
The network name serves to logically assign clients, which
is also referred to as SSID. Only clients with the same
network name are granted access. In AC operation, no
network name is factory set. The AC will therefore try to log
on to an available access point, irrespective of its network
name. This setting is also called “ANY”.

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Release 1.0 03/04

•Channel:
Specifies the active channel of the access point where the
BAT 11b Wireless Ethernet AC is operated. This setting is
adopted from the access point in question.

• MAC Address of AccessPoint:
Displays the MAC address of the access point to which the
client is logged on.

• Security:
Specifies whether WEP encryption or WPA has been
activated in the BAT 11b Wireless Ethernet.

• Current Transmission Rate:
Shows the current transmission rate to the access point.
The following values can be displayed: 1, 2, 5.5, 11 Mbps.

Status

• Current Signal Noise Ratio:
The value of the signal noise ratio indicates the difference
between signal and noise.

• Current Signal Level:
Displays the signal level of the signal received by the
access point. This value is specified in dBm. The higher
this value, the better the received signal level.
Values above –82 dBm usually suffice for a transmission
rate of 11 Mbps. Below –94 dBm, no communication is
possible.

• Current Noise Level:
The noise level specifies the strength of the interfering
signals caused by other sending devices in the 2.4 GHz
band, such as Bluetooth devices, garage door openers, or
video transmission systems. If values above -95 dBm are
displayed here, you should try to shift to other channels.

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87BAT 11b

Scan

Scan

This function serves to display other access points within
reach:

The scan function helps the user to search the environment for
wireless networks. It displays all received access points. Here,
the network name, MAC address, channel, signal strength,
noise strength, and the operating mode are displayed.

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Release 1.0 03/04

Bridge

Bridge

This table displays the stations connected to the BAT 11b Wire­less Ethernet AC.

Bridge Table

• IP Address
IP addresses of the connected devices

• MAC Address
Corresponding MAC addresses of the connected devices

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89BAT 11b

Statistics

Statistics

The access client provides a large range of statistic informa­tion, which will be described in detail in the following.

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Statistics

LAN Statistics:

•TX Total
Total number of packets sent successfully.

• TX Dropped
Total number of dropped packets; refers to the packets to
be sent.

• TX Collision
Total number of packets which were dropped due to
collisions on the medium; refers to the packets to be sent.

• TX Late Collision
A late collision indicates that another system attempted to
transmit after your machine (the one displaying the
message) has transmitted at least the first 60 bytes of its
frame (packet) Since the amount of time it takes to send 60
bytes (50.2 microseconds) is long enough for round trip
propagation delay on even the largest network, a correctly
configured network will never allow this transmission
condition. Something related to the network topology is
causing a problem.
A late collision invariably indicates that one or more
packets were lost by the Ethernet. They will almost always
be retransmitted by the “higher network layers,” but only
after a delay.

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• TX Excessive Collision
Total number of packets where collisions occurred
repeatedly.

•TX Total
Total number of packets received successfully.

•RX Dropped
Total number of dropped packets; refers to the packets to
be received.

•RX Overflow
Total number of packets which were dropped due to
insufficient buffer; refers to the packets to be received.

91BAT 11b

Statistics

•RX Too Long
Total number of packets whose length exceeds the
standard Ethernet packet length (> 1518 bytes).

• RX FCS Errors
Total number of packets received with FCS (Frame Check
Sequence) errors.

• RX Length Errors
Total number of packets whose length does not
correspond to the length specified in the Ethernet packet
length field.

• RX Alignment Errors
Counter is currently not used.

WLAN Statistics

•TX Unicast Frames
The total number of frames, of which the Destination
Address is a unicast MAC address, transmitted
successfully. This implies having received an
acknowledgment to all associated frames.

• TX Multicast Frames
The total number of frames, of which the Destination
Address is a multicast MAC address (including the
broadcast MAC address), transmitted successfully. When
operating as a station in an wireless cell, and these frames
are directed to the AP, this implies having received an
acknowledgment to all associated frames.

•TX Fragments
The total number of frames of type Data or Management
delivered successfully; i.e. directed frames transmitted
and being ACKed, as well as non-directed frames
transmitted.

• TX Unicast Octets
The total number of octets transmitted successfully as part
of successfully transmitted unicast frames. These octets

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Statistics

include MAC Header and Frame Body of all associated
fragments.

• TX Multicast Octets
The total number of octets transmitted successfully as part
of successfully transmitted multicast (incl. broadcast)
frames. These octets include MAC Header and Frame Body
of all associated fragments.

• TX Deferred Transmissions
Number of frames for which (one of) the (fragment)
transmission attempt(s) was one or more times deferred to
avoid a collision.

•TX Single Retry Frames
The number of frames successfully transmitted after one
(and only one) retransmission (on the total of all
associated fragments).

• TX Multiple Retry Frames
The number of frames successfully transmitted after more
than one retransmission (on the total of all associated
fragments).

• TX Retry Limit Exceeded
Number of times a frames is not transmitted successfully
because the retry limit (either the ShortRetryLimit or the
LongRetryLimit) is reached, due to no acknowledgment or
CTS received.

•TX Discards
The number of transmit requests that were discarded to
free up buffer space.

• Transmit queued too long on one of the transmit queues,
due to many retries and defers, or otherwise not being able
to transmit (e.g. scanning).

• Transmit queued too long on the Power-Save queue
(Station in IBSS: destination station does not respond to
ATIM (Announcement Traffic Indication Message);
AP: station does not poll or wake up in time).

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93BAT 11b

Statistics

• RX Unicast Frames
The total number of frames, with a unicast MAC address as
the Destination Address, received successfully.

• RX Multicast Frames
The total number of frames, with a multicast MAC address
(including the broadcast MAC address) as the Destination
Address, received successfully.

•RX Fragments
The total number of frames of type Data or Management
received successfully.

• RX Unicast Octets
The total number of octets received successfully as part of
unicast frames. These octets include MAC Header and
Frame Body of all associated fragments.

• RX Multicast Octets
The total number of octets received successfully as part of
multicast (incl. broadcast) frames. These octets include
MAC Header and Frame Body of all associated fragments.

• RX FCS Errors
Number of frames, considered to be destined for this
station (Address1 matches), received with an FCS (Frame
Check Sequence) error.
This does not include “things” received with an incorrect
CRC in the PLCP) header. These are not considered frames.

• RX Discards no Buffer
The number of received frames that were discarded
because of lack of buffer space.

•TX Discards Wrong SA
The number of transmit requests that were discarded
because of wrong Source Address (Source Address not
equal to OwnMACAddress). This only applies to stations.

• RX Discards WEP Undecryptable
The number of received frames, with the WEP subfield in

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Statistics

the Frame Control field set to one, that were discarded
because it should not have been encrypted or due to the
receiving station not implementing the privacy option.

• RX Message in Messagefragments
The total number of frames of type Data or Management
received successfully, while there was another good
reception going on above the carrier detect threshold.

• RX Message in Bad Messagefragments
The total number of frames of type Data or Management
received successfully, while there was another reception
going on above the carrier detect threshold but with bad or
incomplete PLCP Preamble and Header.

• RX Discards WEP ICV Error
The number of received frames, with the WEP subfield in
the Frame Control field set to one, that were discarded
because the value in the ICV field of the received frame
does not match the ICV value that is calculated for the
contents of the received MPDU.

• Rx Discards - WEP Excluded
The number of received frames, with the WEP subfield in
the Frame Control field set to zero, that were discarded
because encryption is required.

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95BAT 11b

Configuration: LAN Interface

Configuration: LAN Interface

Here, you can configure the LAN parameters of the BAT 11b
Wireless Ethernet.

• IP Address Mode
Check the DHCP option to have the IP settings
automatically assigned to the BAT 11b Wireless Ethernet by
the available DHCP server. To configure the settings
statically, check the Static option and enter the values
manually. If no DHCP server is found in the network, the
BAT 11b Wireless Ethernet will take over the statically set
values.

•IP Address
Enter an unambiguous IP address of your network. This
address may be 192.168.1.15, for instance, if the network
concerned is a private network. In this case, you do not
require a commercially available address from your
Internet provider.

•Subnet Mask
The subnet mask has to be identical with the one of your
Ethernet network. By default, you can enter 255.255.255.0.

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Configuration: LAN Interface

• Gateway
Specifies the IP address of the default gateway. As a rule,
this a router or a PC with Internet access.

•Nodename
Name of the BAT 11b Wireless Ethernet AC. Serves for easy
identification via the Hirschmann BAT Discovery. In the
state as delivered, the node name consists of “node_” and
the MAC address of the BAT 11b.

If you want to take over the settings made, confirm this by
clicking Save. Otherwise, you can discard the changes by
clicking Cancel. To take over the changes and activate them,
the BAT 11b Wireless Ethernet has to be rebooted.

You are requested to do this via the following message:

Confirm this message by clicking Reboot. You are requested
once again to terminate all existing connections and browser
sessions via a reboot. The reboot process takes a few sec­onds; subsequently, the BAT 11b Wireless Ethernet will be
ready for operation again.

Confirm with OK. You will then have to log on again.
Hinweis:

The restart of the BAT 11b (takes about 10 seconds) is not dis­played on your computer screen. With the help of the LEDs of
your BAT 11b, however, you can check the radio activity, the
radio status, and the Ethernet activity.

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Configuration: Wireless Interface

Finally, check the functionality of the BAT 11b, for instance by
searching for BAT 11b installed in the network via the BAT Dis­covery.

Configuration: Wireless Interface

Wireless Configuration

Here, you can configure the WLAN parameters of the BAT 11b
Wireless Ethernet.

•Operating Mode
As operating mode of the BAT 11b Wireless Ethernet AC,
you can select either the ad-hoc or the infrastructure
mode. The currently set operating mode is displayed here.

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Configuration: Wireless Interface

•Network Name
The network name (also called SSID) is an unambiguous
network name which has to be identical for all subscribers
of the same wireless network. Capital and lower case
writing are distinguished. As a maximum, the network
name consists of 32 alphanumerical characters. Make sure
that all subscribers of the wireless network use the same
network name. In AC operation, no network name is factory
set. The AC will therefore try to log on to an available
access point, irrespective of its network name. This setting
is also called “ANY”.

• Regulatory Domain
This setting is only relevant if the BAT 11b-AC is to be
operated in ad-hoc mode. For the operation of the access
client, country-specific regulations referring to the
selectable channels have to be observed. Specify the
country or region where the device is to be operated.

•Channel
This setting is only relevant if the BAT 11b-AC is to be
operated in ad-hoc mode. In this case, select the channel
used by the ad-hoc network from the list of available
channels. If required, set the other subscribers of the ad­hoc network to the same channel. If you wish to use
channels 12 and 13, please make sure beforehand that the
corresponding clients do support these channels and that
the correct regulatory domain has been selected. As a rule,
this applies to products which can also be operated in the
USA, since there only channels 1 to 11 are admitted (e.g.
our USB adapter).
Note: The number of the available channels is not identical
for all devices. You should therefore also refer to the
technical documentation for your product. As a rule,
channels 1 to 11 are mostly available.

•Transmission Rate
The transmission rate should be adapted to your wireless
network. As a rule, this is done automatically. Under

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99BAT 11b

Configuration: Wireless Interface

certain circumstances, however, it is necessary to do this
according to the procedure described below. The range of
a wireless network decreases with higher data rates and
increases with lower data rates.

Auto fallback 11, 5.5, 2, 1 Mbps

— Automatic fallback according to the quality of the
connection, starting with 11 Mbps, going down to 5.5
Mbps, 2 Mbps, and 1 Mbps. This is the most frequently
used setting.

Auto fallback 5.5, 2, 1 Mbps

— Automatic fallback according to the quality of the
connection, starting with 5.5 Mbps, going down to 2 Mbps
and 1 Mbps.

Auto fallback 2, 1 Mbps

— Automatic fallback according to the quality of the
connection, starting with 2 Mbps, going down to 1 Mbps.

Fixed 1 Mbps

— Sets the data rate to 1 Mbps. This setting can be used to
optimize the range for lower data rates.

Fixed 2 Mbps

— Sets the data rate to 2 Mbps.

Fixed 5.5 Mbps

— Sets the data rate to 5.5 Mbps.

Fixed 11 Mbps

— Sets the data rate to 11 Mbps. This setting makes sense
only if all wireless clients are operated at a short distance
and reach optimum quality of connection.

• Multicast Rate
This setting is only relevant if the BAT 11b-AC is to be
operated in ad-hoc mode. The multicast rate, i.e. the data

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