4F, No. 24-2, Industry East 4
Hsin-Chu, Taiwan, R.O.C.
Technical Support
E-mail: techsupt@ndc.com.tw
NDC World Wide Web
www.ndclan.com
th
Road, Science Park
TRADEMARKS
NDC and InstantWave are trademarks of National Datacomm Corporation.
All other names mentioned in this document are trademarks/registered
trademarks of their respective owners.
NDC provides this document “as is”, without warranty of any kind, neither
expressed nor implied, including, but not limited to, the particular purpose. NDC
may make improvements and/or changes in this manual or in the product(s) and/or
the program(s) described in this manual at any time. This document could
include technical inaccuracies or typographical errors.
FCC WARNING
This equipment has been tested and found to comply with the limits for a Class B
Digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected
Consult the dealer or an experienced radio/TV technician for help
You are cautioned that changes or modifications not expressly approved by the
party responsible for compliance could void your authority to operate the
equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that
may cause undesired operation
FCC RF Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
a minimum distance of 20 centimeters (8 inches) between the radiator and your
body.
InstantWave
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Packing List
The NWH6210 package should contain the following items:
• One NWH6210 InstantWave Wireless Workgroup Bridge
• Dual Dipole Antenna
• A mounting kit (mounting template, screws, and rawl-plugs)
• One CD-ROM (Contains InstantWave Management System, User’s Guide,
links to online resources)
• One AC to DC power adapter
• One straight-through RT-45 UTP cable
• One cross-over RT-45 UTP cable
The NWH2610 package should contain the following items:
• One NWH2610 InstantWave Wireless Ethernet Client (Management
Ve r si o n )
• One CD-ROM (Contains InstantWave Management System, User’s Guide,
3. On Windows NT4.0, service pack 4 or later must be installed.
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Terminology Used in this Guide
BSSID/MAC ID
BSSID (Basic Service Set ID) is an ID unique to each InstantWave product. It is
factory set and is identical to the MAC ID (Media Access Control ID). It allows
each InstantWave product to be identified on the network.
Domain Name/SSID
A “Domain” is most commonly used to refer to a group of computers whose
hostnames share a common suffix. The domain is usually defined by the network
administrator as a segment/subnet of a large network and may be made up of
overlapping wireless cells. Wireless nodes can roam freely within the same
domain without disconnecting from the network.
Roaming
The concept is similar to that of a cellular phone moving from one base station
(one AP) to another. InstantWave offers built-in high performance seamless
roaming capabilities.
Regulatory Domain
InstantWave products use the unlicensed ISM (Industrial, Scientific, Medical) band
to communicate through radio waves. Different countries offer different radio
frequencies to be used as the ISM band. There are four frequency bands defined
by IEEE 802.11: Japan (2.471GHz – 2.497 GHz), USA, Extended Japan, Canada,
and Europe (2.4 GHz – 2.4835 GHz), Spain (2.445 GHz – 2.475 GHz), and France
(2.4465 GHz – 2.4835 GHz). To use InstantWave in a country not listed above,
check with your government’s regulating body to find the correct frequency band
to use. All InstantWave products are supplied preset to the country of sale’s
frequency band.
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WEP
WEP stands for Wired Equivalent Privacy. It is an encryption scheme that
provides secure wireless data communication. WEP uses a 40-bit or 128-bit key
to encrypt data. In order to decode the data transmission, each wireless client on
the network must use identical keys.
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How to Use this Guide
The User’s Guide gives complete instructions for installation and use of the
InstantWave Access Point (AP), Wireless Workgroup Bridge (WWB) and Wireless
Ethernet Client (WEC). All of them share a common user interface. The major
difference among them is:
• The AP has MAC address access control of the wireless stations
• The WWB‘s supports up to 16 Ethernet devices. An access table is
provided by the WWB to allow 16 Ethernet devices’ MAC addresses
to be registered.
• The WEC supports one Ethernet attached device.
InstantWave products are supplied with factory set default network settings. Use
the IWMS tool to change the default settings before introducing a new device to an
already-established wireless network.
The IWMS program is a simple-to-use, yet extremely powerful, SNMP-based
utility for online central configuration and network management from a remote
station on the same subnet. A trap management program is also provided to
monitor/diagnose InstantWave products.
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Read through the next section ‘Plan the Network’, in order to get the best possible
performance from the InstantWave wireless network.
Step 1: Plan the wireless network
Step 2: Pre-configure the AP, WWB,
or WEC before installing it
into an existing Ethernet
network
Step 3: Install the AP, WWB, or
WEC into the Ethernet
network
Step 4: Make online configuration
and manage the AP, WWB,
or WEC via the IWMS
utility
Refer to Plan the Network, page 17, for
details
Refer to Hardware Pre-Configuration, page
27, for details.
If you wish to use the default settings for a
simple wireless infrastructure network or
single AP network, you may skip this step
Refer to Hardware, page 54, for details.
Note: If your network is a simple wireless
infrastructure network, you need only place
the AP in a suitable location to finish the AP
installation
Refer to Install the InstantWave
Management , page 27, and Using the
InstantWave Management , page 28, for
details
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Plan the Network
Infrastructure Network Types
An infrastructure network is formed by several stations (WWBs or WECs) and one
or more Access Points (APs), with the stations (WWB or WEC) within a set
distance from the AP. Figure 1 depicts a typical infrastructure network topology.
There are three infrastructure network setups that are commonly used. It is a
good idea to understand the possible network setups and configuration
requirements before planning your wireless network.
Type 1. The simplest wireless infrastructure network is composed of one AP
and a few wireless stations communicating via radio waves (Figure 1).
This setup enables mobile stations to communicate with each other.
The main benefit of this type of network is to extend the range of the
network. If an AP is placed between the stations, the radio
transmission distance is effectively doubled since Wireless
Computer-1 can talk to Wireless Computer-2 through the AP. The
drawback of this configuration is that the effective bandwidth is
halved since all communication is relayed by the AP.
Access Point
Wireless
Computer-1
With WEC
Figure 1. Simple Wireless Infrastructure Network
Type 2. The next simplest wireless network is very similar to the Type 1
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Computer-2
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network. This time the AP is connected to a wired Ethernet network
p
as a node. In this configuration the AP operates as a bridge between
the wired Ethernet network and the wireless networks (Figure 2).
Wireless users have the same access to the network resources as they
would have if they were wired. This type of network is usually used
to extend an existing network into a difficult to wire or a roaming
environment.
Wired Com
uters
Server
Wireless Computers
with WEC
Figure 2. Single AP Network
Type 3. The third type of network is composed of multiple Access Point’s and
multiple stations (Figure 3).
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Wireless Cell A Wireless Cell B Wireless Cell C
Server
AP-1 AP-2
Station -1
Figure 3. Multiple AP Network
AP-3
Station -2
Station -3
The reasons for having multiple APs installed are:
1. To increase bandwidth in order to boost overall network performance
2. To extend the coverage range
Any other type of configuration is usually a mix of these commonly used types.
Planning WWB and WEC for your wireless network
The InstantWave WWB may be used together with a hub or switch, and wirelessly
associates to the existing network backbone via InstantWave APs. It can connect
up to 16 users (per bridge) for temporary meeting areas, classrooms, etc.
The InstantWave WEC needs no extra drivers or wireless LAN configuration for
wireless operation. It may be connected to most Ethernet-ready equipment, such
as industrial PCs, scanners, etc.
Figure 4, on page 20, illustrates a complex infrastructure network that combines
APs, WWBs, and WECs.
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Ethernet-ready
Device with WEC
Printer with WEC
Figure 4. Complex Infrastructure network
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