A
USING DISCOVERY
Running the Discovery
Application
Windows Installation
(95/98/2000/Me/NT)
3Com provides a user friendly Discovery application for detecting the
OfficeConnect Wireless Cable/DSL Gateway on the network.
1 Insert the Gateway CD-ROM in the CD-ROM drive on your computer. A menu will
appear; select Gateway Discovery.
Note: Discovery will find the Gateway even if it is unconfigured or misconfigured.
Figure 57 Discovery Welcome Screen
2 When the Welcome screen is displayed click on Next and wait until the application
discovers the Gateways connected to your LAN.
Figure 58 Discovered Gateway Screen
62 A
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SING DISCOVERY
A: U
3 Figure 59 shows an example Discovered Devices screen. Highlight the Wireless
Cable/DSL Gateway by clicking on it, and press Next.
Figure 59 Discovery Finish Screen
4 Click on Finish to launch a web browser and display the login page for the
Gateway.
B
IP ADDRESSING
The Internet Protocol
Suite
Managing the
Cable/DSL Gateway
over the Network
IP Addresses and Subnet
Masks
The Internet protocol suite consists of a well-defined set of communications
protocols and several standard application protocols. Transmission Control
Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a
combination of two of the protocols (IP and TCP) working together. TCP/IP is an
internationally adopted and supported networking standard that provides
connectivity between equipment from many vendors over a wide variety of
networking technologies.
To manage a device over the network, the Cable/DSL Wireless Gateway must be
correctly configured with the following IP information:
■
An IP address
■ A Subnet Mask
Each device on your network must have a unique IP address to operate correctly.
An IP address identifies the address of the device to which data is being sent and
the address of the destination network. IP addresses have the format n.n.n.x
where n is a decimal number between 0 and 255 and x is a number between 1
and 254 inclusive.
However, an IP Address alone is not enough to make your device operate. In
addition to the IP address, you need to set a subnet mask. All networks are divided
into smaller sub-networks and a subnet mask is a number that enables a device to
identify the sub-network to which it is connected.
For your network to work correctly, all devices on the network must have:
■ The same sub-network address.
■ The same subnet mask.
The only value that will be different is the specific host device number. This value
must always be unique.
An example IP address is ‘192.168.100.8’. However, the size of the network
determines the structure of this IP Address. In using the Gateway, you will
probably only encounter two types of IP Address and subnet mask structures.
Typ e O n e
In a small network, the IP address of ‘192.168.100.8’ is split into two parts:
■
Part one (‘192.168.100’) identifies the network on which the device resides.
■
Part two (‘.8’) identifies the device within the network.
64 A
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B: IP A
DDRESSING
This type of IP Address operates on a subnet mask of ‘255.255.255.0’.
See Table 3 for an example about how a network with three computers and a
Wireless Cable/DSL Gateway might be configured.
Tab l e 3 IP Addressing and Subnet Masking
Device IP Address Subnet Mask
PC 1 192.168.100.8 255.255.255.0
PC 2 192.168.100.33 255.255.255.0
PC 3 192.168.100.188 255.255.255.0
Wireless Cable/DSL
Gateway
192.168.100.72 255.255.255.0
Typ e Two
In larger networks, where there are more devices, the IP address of
‘192.168.100.8’ is, again, split into two parts but is structured differently:
■
Part one (‘192.168’) identifies the network on which the device resides.
■ Part two (‘.100.8’) identifies the device within the network.
How does a Device
Obtain an IP Address
and Subnet Mask?
This type of IP Address operates on a subnet mask of ‘255.255.0.0’.
See Table 4 for an example about how a network (only four computers
represented) and a Wireless Cable/DSL Gateway might be configured.
Tab l e 4 IP Addressing and Subnet Masking
Device IP Address Subnet Mask
PC 1 192.168.100.8 255.255.0.0
PC 2 192.168.201.30 255.255.0.0
PC 3 192.168.113.155 255.255.0.0
PC 4 192.168.002.230 255.255.0.0
Wireless Cable/DSL
Gateway
192.168.002.72 255.255.0.0
There are three different ways to obtain an IP address and the subnet mask. These
are:
■
Dynamic Host Configuration Protocol (DHCP) Addressing
■ Static Addressing
■
Automatic Addressing (Auto-IP Addressing)
DHCP Addressing The Wireless Cable/DSL Gateway contains a DHCP server, which allows computers
on your network to obtain an IP address and subnet mask automatically. DHCP
assigns a temporary IP address and subnet mask which gets reallocated once you
disconnect from the network.
DHCP will work on any client Operating System such as Windows
®
95, Windows
98 or Windows NT 4.0. Also, using DHCP means that the same IP address and
subnet mask will never be duplicated for devices on the network. DHCP is
particularly useful for networks with large numbers of users on them.
How does a Device Obtain an IP Address and Subnet Mask? 65
Static Addressing You must enter an IP Address and the subnet mask manually on every device.
Using a static IP and subnet mask means the address is permanently fixed.
Auto-IP Addressing Network devices use automatic IP addressing if they are configured to acquire an
address using DHCP but are unable to contact a DHCP server. Automatic IP
addressing is a scheme where devices allocate themselves an IP address at random
from the industry standard subnet of 169.254.x.x (with a subnet mask of
255.255.0.0). If two devices allocate themselves the same address, the conflict is
detected and one of the devices allocates itself a new address.
Automatic IP addressing support was introduced by Microsoft in the Windows 98
operating system and is also supported in Windows 2000.
66 A
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B: IP A
DDRESSING
TECHNICAL SPECIFICATIONS
C
This section lists the technical specifications for the OfficeConnect Wireless
Cable/DSL Gateway.
Interfaces Cable or DSL modem connection - 10/100 FD.
LAN connection - four 10Mbps/100Mbps dual speed Ethernet ports
(10BASE-T/100BASE-TX)
WLAN Interface Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 11Mbps, automatic fallback to 5.5, 2 or 1Mbps
Maximum channels: 13
Range up to 304.8m (1000ft)
Frequency: (US/Canada/Europe) 2.400-2.4835 GHz
Sensitivity: 1,2,5.5Mbps: -80dBm; 11Mbps -76dBm typical
Modulation: CCK, BPSK, QPSK
Encryption: 40/64bit, 128 bit WEP
Maximum clients: 32
O/P Power 15dBm
Operating Temperature 0 °C to 40 °C (32 °F to 105 °F)
Power 7VA, 23.9 BThU/hr
Humidity 0 % to 90 % (non-condensing) humidity
Dimensions
Weight Approximately 592 g (1.3 lbs)
Standards
■
Width = 220 mm (8.7 in.)
■ Depth = 135 mm (5.3 in.)
■
Height = 24 mm (1 in.)
Functional: ISO 8802/3
IEEE 802.3
IEEE 802.11b, WiFi
Safety: UL 1950, EN 60950
CSA 22.2 #950
IEC 60950
68 A
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ECHNICAL SPECIFICATIONS
C: T
EMC: EN 55022 Class B
EN 55024
AS/NZS 3548 B
FCC Part 15 Class B*
ICES-003 Class B
VCCI Class B
CNS 13438 Class A
ETS 300-826
Radio CFR 47 FCC Part 15.207, 15.209, 15.247 and 15.249.
ETS 300 328 (2.4 GHz ISM band wide band transmission systems)
Environmental: EN 60068 (IEC 68)
*See “Safety Information” on page 69 for conditions of operation.
System Requirements
Operating Systems The Wireless Cable/DSL Gateway will support the following Operating Systems:
■
Windows 95/98
■
Windows NT 4.0
■ Windows ME
■ Windows 2000
■
Windows XP
■ Mac OS 8.5 or higher
■
Unix
Ethernet Performance The Wireless Cable/DSL Gateway complies to the IEEE 802.3i, u and x
specifications.
Wireless Performance
Cable Specifications
The Wireless Cable/DSL Gateway complies with the IEEE 802.11b specification and
conforms to the WiFi interoperability test standard.
The Wireless Cable/DSL Gateway supports the following cable types and
maximum lengths:
■
Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed Ethernet)
Twisted Pair — shielded and unshielded cable types.
■
Maximum cable length of 100m (327.86 ft).
D
SAFETY INFORMATION
Important Safety
Information
WARNING: Warnings contain directions that you must follow for your personal
safety. Follow all directions carefully.
You must read the following safety information carefully before you install or
remove the unit:
WARNING: The Gateway generates and uses radio frequency (rf) energy. In some
environments, the use of rf energy is not permitted. The user should seek local
advice on whether or not rf energy is permitted within the area of intended use.
WARNING: Exceptional care must be taken during installation and removal of the
unit.
WARNING: Only stack the Gateway with other OfficeConnect units.
WARNING: To ensure compliance with international safety standards, only use the
power adapter that is supplied with the unit.
WARNING: The socket outlet must be near to the unit and easily accessible. You
can only remove power from the unit by disconnecting the power cord from the
outlet.
WARNING: This unit operates under SELV (Safety Extra Low Voltage) conditions
according to IEC 950. The conditions are only maintained if the equipment to
which it is connected also operates under SELV conditions.
WARNING: There are no user-replaceable fuses or user-serviceable parts inside the
Gateway. If you have a physical problem with the unit that cannot be solved with
problem solving actions in this guide, contact your supplier.
Wichtige
Sicherheitshinweise
WARNING: Disconnect the power adapter before moving the unit.
WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be
used as telephone sockets. Only connect RJ-45 data connectors to these sockets.
ACHTUNG: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen
Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen, bevor Sie
das Geräts installieren oder ausbauen:
ACHTUNG: Der Gateway erzeugt und verwendet Funkfrequenz (RF). In manchen
Umgebungen ist die Verwendung von Funkfrequenz nicht gestattet. Erkundigen
Sie sich bei den zuständigen Stellen, ob die Verwendung von Funkfrequenz in dem
Bereich, in dem der Bluetooth Access Point eingesetzt werden soll, erlaubt ist.
ACHTUNG: Bei der Installation und beim Ausbau des Geräts ist mit höchster
Vorsicht vorzugehen.
70 A
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AFETY INFORMATION
D: S
ACHTUNG: Stapeln Sie das Geräts nur mit anderen OfficeConnect Gerätes
zusammen.
ACHTUNG: Aufgrund von internationalen Sicherheitsnormen darf das Gerät nur
mit dem mitgelieferten Netzadapter verwendet werden.
ACHTUNG: Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich
sein. Die Stromversorgung des Geräts kann nur durch Herausziehen des
Gerätenetzkabels aus der Netzsteckdose unterbrochen werden.
ACHTUNG: Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen
(Sicherheitskleinstspannung) gemäß IEC 950. Diese Bedingungen sind nur
gegeben, wenn auch die an das Gerät angeschlossenen Geräte unter
SELV-Bedingungen betrieben werden.
ACHTUNG: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile
in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Gateway haben, das
nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen
Sie sich mit Ihrem Lieferanten in Verbindung.
ACHTUNG: Vor dem Ausbau des Geräts das Netzadapterkabel herausziehen.
ACHTUNG: RJ-45-Anschlüsse. Dies sind abgeschirmte RJ-45-Datenbuchsen. Sie
können nicht als Telefonanschlußbuchsen verwendet werden. An diesen Buchsen
dürfen nur RJ-45-Datenstecker angeschlossen werden.
Consignes
importantes de
sécurité
AVERTISSEMENT: Les avertissements présentent des consignes que vous devez
respecter pour garantir votre sécurité personnelle. Vous devez respecter
attentivement toutes les consignes.
Nous vous demandons de lire attentivement les consignes suivantes de sécurité
avant d’installer ou de retirer l’appareil:
AVERTISSEMENT: La Gateway fournit et utilise de l'énergie radioélectrique (radio
fréquence -rf). L'utilisation de l'énergie radioélectrique est interdite dans certains
environnements. L'utilisateur devra se renseigner sur l'autorisation de cette énergie
dans la zone prévue.
AVERTISSEMENT: Faites très attention lors de l'installation et de la dépose du
groupe.
AVERTISSEMENT: Seulement entasser le moyer avec les autres moyeux
OfficeConnects.
AVERTISSEMENT: Pour garantir le respect des normes internationales de sécurité,
utilisez uniquement l'adaptateur électrique remis avec cet appareil.
AVERTISSEMENT: La prise secteur doit se trouver à proximité de l’appareil et son
accès doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu'en
débranchant son cordon électrique au niveau de cette prise.
AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement basse de
sécurité qui est conforme à la norme CEI 950. Ces conditions ne sont maintenues
que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions.
AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou
entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un problème
physique avec le moyeu qui ne peut pas être résolu avec les actions de la
résolution des problèmes dans ce guide, contacter votre fournisseur.
Consignes importantes de sécurité 71
AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer cet appareil.
AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées de données
RJ-45. Vous ne pouvez pas les utiliser comme prise de téléphone. Branchez
uniquement des connecteurs de données RJ-45 sur ces prises femelles.
72 A
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AFETY INFORMATION
D: S
END USER SOFTWARE LICENCE
E
GREEMENT
A
3Com Corporation
END USER SOFTWARE LICENSE AGREEMENT
YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF
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74 A
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E: END U
SER SOFTWARE LICENCE AGREEMENT
F
Information
Regarding Popular
ISPs
ISP INFORMATION
WAN Types Characteristics Popular ISPs
Dynamic IP
(Clone MAC)
Dynamic IP
(Hostname)
PPPoE
(DSL)
Static
(DSL)
Static
(Cable)
Cable modem ISP, non-hostname
based. Need to clone the MAC
address in the Advanced tab of the
Internet Settings page.
Cable ISP, Requires Hostname to
authenticate ie. cx213818-B. Need
to enter the hostname in the
Internet Settings page.
Usually special software installed
on PC, MacPOET/WinPOET,
EnterNet 300. The Gateway has
this software built in and you can
remove it from your PC. You will
need to enter the user name and
password that your ISP provided to
you in the PPPoE page of the
Gateway. Leave the service name
blank unless your ISP requires it.
DSL Modem, always on. Need to
enter ALL IP information from ISP
in the Static IP address section of
the Internet Settings page.
Cable Modem, Always on, ISP
assigns specific IP information
which needs to be entered on the
“Fixed IP” page of the Gateway.
MediaOne, RoadRunner,
Optimum Online, Time Warner,
Charter, Adelphia, Metrocast.
@Home Network, Cogoco,
ComCast, Cox, Excite, Rogers,
Shaw, Insight, Videotron
Bell*, Century Tel, Citizens,
Primus, Prodigy, Snet, Sprint FC,
Verizon, First World, Brightnet,
Earthlink, Ameritech, Covad,
Mindspring, Sympatico DSL,
USwest, Owest, SNet
CableSpeed, Cnet, Direct Link,
Drizzle, DSL Extreme, Earthlink
Wireless, Fast Point, Flashcom,
GTE-WhirlWind, Heavenet, HSA
Corp, I-55, InterAccess, LinkLine,
Mission, Nauticom, NAS, Omitel,
Onterra, Phatpipe, Rhythms,
Speakeasy, Sterling, XO, Zyan
Cox Cable, Sprint, US Cable,
Cable-Cable
*Bell includes Bell Advantage, Bell Canada, Bell South, PacBell and Southwestern
Bell.
76 A
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F: ISP I
NFORMATION
GLOSSARY
802.11b The IEEE standard to which the 3Com OfficeConnect Wireless Cable/DSL Gateway
conforms. This standard provides for 1,2,5 and 11Mbps data rates and a set of
fundamental signaling methods and other services (see WECA).
10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair
cable.
100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair
cable.
Access Point An Access Point is a device through which wireless clients connect to other
wireless clients and which acts as a bridge between wireless clients and a wired
network, such as Ethernet. Wireless clients can be moved anywhere within the
coverage area of the access point and still connect with each other. If connected to
an Ethernet network, the access point monitors Ethernet traffic and forwards
appropriate Ethernet messages to the wireless network, while also monitoring
wireless client radio traffic and forwarding wireless client messages to the Ethernet
LAN.
Ad Hoc mode Ad Hoc mode is a configuration supported by most wireless clients. It is used to
connect a peer to peer network together without the use of an access point. It
offers lower performance than infrastructure mode, which is the mode the
gateway uses. (see also Infra-structure mode.)
Auto-negotiation Some devices in the OfficeConnect range support auto-negotiation.
Auto-negotiation is where two devices sharing a link, automatically configure to
use the best common speed. The order of preference (best first) is: 100BASE-TX
full duplex, 100BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T half
duplex. Auto-negotiation is defined in the IEEE 802.3 standard for Ethernet and is
an operation that takes place in a few milliseconds.
Bandwidth The information capacity, measured in bits per second, that a channel can
transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is
100 Mbps. The bandwidth for 802.11b wireless is 11Mbps.
Category 3 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 3 is voice grade cable and can only be used in Ethernet
networks (10BASE-T) to transmit data at speeds of up to 10 Mbps.
Category 5 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 5 can be used in Ethernet (10BASE-T) and Fast Ethernet
78 G
LOSSARY
networks (100BASE-TX) and can transmit data up to speeds of 100 Mbps.
Category 5 cabling is better to use for network cabling than Category 3, because
it supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds.
Channel Similar to any radio device, the OfficeConnect Wireless Cable/DSL gateway allows
you to choose different radio channels in the wireless spectrum. A channel is a
particular frequency within the 2.4GHz spectrum within which the Gateway
operates.
Client The term used to described the desktop PC that is connected to your network.
DHCP Dynamic Host Configuration Protocol. This protocol automatically assigns an IP
address for every computer on your network. Windows 95, Windows 98 and
Windows NT 4.0 contain software that assigns IP addresses to workstations on a
network. These assignments are made by the DHCP server software that runs on
Windows NT Server, and Windows 95 and Windows 98 will call the server to
obtain the address. Windows 98 will allocate itself an address if no DHCP server
can be found.
DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to
have a domain name (such as 3com.com) and one or more IP addresses (such as
192.34.45.8). A DNS server keeps a database of host computers and their
respective domain names and IP addresses, so that when a domain name is
requested (as in typing “3com.com” into your Internet browser), the user is sent
to the proper IP address. The DNS server address used by the computers on your
home network is the location of the DNS server your ISP has assigned.
DSL modem DSL stands for digital subscriber line. A DSL modem uses your existing phone lines
to send and receive data at high speeds.
Encryption A method for providing a level of security to wireless data transmissions. The
OfficeConnect Wireless Cable/DSL Gateway uses two levels of encryption; 40/64
bit and 128 bit. 128 bit is a more powerful level of encryption than 40/64 bit.
ESSID Extended Service Set Identifier. The ESSID is a unique identifier for your wireless
network. You must have the same ESSID entered into the gateway and each of it's
wireless clients.
Ethernet A LAN specification developed jointly by Xerox, Intel and Digital Equipment
Corporation. Ethernet networks use CSMA/CD to transmit packets at a rate of 10
Mbps over a variety of cables.
Ethernet Address See MAC address.
Fast Ethernet An Ethernet system that is designed to operate at 100 Mbps.
Firewall Electronic protection that prevents anyone outside of your network from seeing
your files or damaging your computers.
79
Full Duplex A system that allows packets to be transmitted and received at the same time and,
in effect, doubles the potential throughput of a link.
Gateway A device that acts as a central hub by connecting to each computer's network
interface card and managing the data traffic between the local network and the
Internet.
Half Duplex A system that allows packets to transmitted and received, but not at the same
time. Contrast with full duplex.
Hub A device that regenerates LAN traffic so that the transmission distance of that
signal can be extended. Hubs are similar to repeaters, in that they connect LANs of
the same type; however they connect more LANs than a repeater and are
generally more sophisticated.
IEEE Institute of Electrical and Electronics Engineers. This American organization was
founded in 1963 and sets standards for computers and communications.
IETF Internet Engineering Task Force. An organization responsible for providing
engineering solutions for TCP/IP networks. In the network management area, this
group is responsible for the development of the SNMP protocol.
Infra-structure mode Infra-Structure mode is the 802.11b configuration supported by the Gateway. You
will need to ensure all of your clients are set up to use infra-structure mode in
order for them to communicate with the Access Point built into your Gateway.
(see also Ad Hoc mode)
IP Internet Protocol. IP is a layer 3 network protocol that is the standard for sending
data through a network. IP is part of the TCP/IP set of protocols that describe the
routing of packets to addressed devices. An IP address consists of 32 bits divided
into two or three fields: a network number and a host number or a network
number, a subnet number, and a host number.
IP Address Internet Protocol Address. A unique identifier for a device attached to a network
using TCP/IP. The address is written as four octets separated with periods
(full-stops), and is made up of a network section, an optional subnet section and a
host section.
ISP Internet Service Provider. An ISP is a business that provides connectivity to the
Internet for individuals and other businesses or organizations.
LAN Local Area Network. A network of end stations (such as PCs, printers, servers) and
network devices (hubs and switches) that cover a relatively small geographic area
(usually not larger than a floor or building). LANs are characterized by high
transmission speeds over short distances (up to 1000 metres).
MAC Media Access Control. A protocol specified by the IEEE for determining which
devices have access to a network at any one time.
80 G
LOSSARY
MAC Address Media Access Control Address. Also called the hardware or physical address. A
layer 2 address associated with a particular network device. Most devices that
connect to a LAN have a MAC address assigned to them as they are used to
identify other devices in a network. MAC addresses are 6 bytes long.
NAT Network Address Translation. NAT enables all the computers on your network to
share one IP address. The NAT capability of the Gateway allows you to access the
Internet from any computer on your home network without having to purchase
more IP addresses from your ISP.
Network A Network is a collection of computers and other computer equipment that are
connected for the purpose of exchanging information or sharing resources.
Networks vary in size, some are within a single room, others span continents.
Network Interface Card
(NIC)
Protocol A set of rules for communication between devices on a network. The rules dictate
PPPoE Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a method of
RJ-45 A standard connector used to connect Ethernet networks. The "RJ" stands for
Server A computer in a network that is shared by multiple end stations. Servers provide
SSID Service Set Identifier. Some vendors of wireless products use SSID interchangeably
Subnet Address An extension of the IP addressing scheme that allows a site to use a single IP
A circuit board installed into a piece of computing equipment, for example, a
computer, that enables you to connect it to the network. A NIC is also known as
an adapter or adapter card.
format, timing, sequencing and error control.
secure data transmission originally created for dial-up connections; PPPoE is for
Ethernet connections.
"registered jack".
end stations with access to shared network services such as computer files and
printer queues.
with ESSID.
network address for multiple physical networks.
Subnet mask A subnet mask, which may be a part of the TCP/IP information provided by your
ISP, is a set of four numbers configured like an IP address. It is used to create IP
address numbers used only within a particular network (as opposed to valid IP
address numbers recognized by the Internet, which must assigned by InterNIC).
Subnets A network that is a component of a larger network.
Switch A device that interconnects several LANs to form a single logical LAN that
comprises of several LAN segments. Switches are similar to bridges, in that they
81
connect LANs of a different type; however they connect more LANs than a bridge
and are generally more sophisticated.
TCP/IP Transmission Control Protocol/Internet Protocol. This is the name for two of the
most well-known protocols developed for the interconnection of networks.
Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is
the protocol of the Internet.
TCP relates to the content of the data travelling through a network — ensuring
that the information sent arrives in one piece when it reaches its destination. IP
relates to the address of the end station to which data is being sent, as well as the
address of the destination network.
Tr af fi c The movement of data packets on a network.
WAN Wide Area Network. A network that connects computers located in geographically
separate areas (for example, different buildings, cities, or countries). The Internet is
an example of a wide area network.
WECA Wireless Ethernet Compatibility Alliance. An industry group formed to certify cross
WEP Wired Equivalent Privacy. A shared key encryption mechanism for wireless
WiFi Wireless Fidelity. This is the certification granted by WECA to products that meet
Wireless Client The term used to describe a desktop or mobile PC that is wirelessly connected to
Wireless LAN Service
Area
Wizard A Windows application that automates a procedure such as installation or
WLAN Wireless Local Area Network. A WLAN is a group of computers and devices
vendor interoperability and compatibility of 802.11b wireless networking products
and to promote the standard for enterprise, small business and home
environments. (see also 802.11b, Wi-Fi)
networking. Encryption strength is 40/64 bit or 128 bit.
their interoperability criteria. (see also 802.11b, WECA)
your wireless network
Another term for ESSID (Extended Service Set Identifier)
configuration.
connected together by wireless in a relatively small area (such as a house or office).
82 G
LOSSARY
NDEX
I
A
access rights 47
addresses
IP 63
Administration Password 25, 33
Automatic Addressing 64
C
cable specifications 68
Clone MAC 43
conventions
notice icons, About This Guide 7
text, About This Guide 7
D
DHCP 27, 28, 34, 64
DHCP Server 20
Discovery application 61
DMZ 44
DNS 19, 28, 41, 42
Primary 42
primary 28
Secondary 42
secondary 28
Dynamic IP Address 42
Dynamic IP Address Mode 27
F
Firewall 43
firewall 49
N
network
addresses 63
P
Password 32
password 23
PING 48
PPPoE 21, 41
PPPoE Mode 26
R
Remote Administration 49
S
Safety Information 15
Security 48
Setup Wizard 23, 33
specifications
technical 67
Static Addressing 64
Static IP Address 42
Static IP Mode 28
Subnet Mask 63
subnet mask 28
Summary 30
Support Information 53
support links 53
System Tools 49
I
Internet
addresses 63
Internet Addressing Mode 26
IP Address 28
IP address 28, 34, 63
IP Allocation 40
ISP gateway address 28
L
LAN 28, 33
LED 11
login 62
M
MAC address 27, 34
T
TCP/IP 19, 20, 28, 63
technical
specifications 67
standards 67
Time Zone 25, 50
V
Virtual Servers 43
W
WAN 26
Web Proxy 21
84 I
NDEX
REGULATORY NOTICES
FCC Statement 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, and the Canadian
Department of Communications Equipment Standards entitled, “Digital
Apparatus,” ICES-003. 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.
Information to the User If this equipment does cause 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 the receiving antenna.
FCC Declaration of
Conformity
■
Relocate the equipment with respect to the receiver.
■ Move the equipment away from the receiver.
■ Plug the equipment into a different outlet so that equipment and receiver are
on different branch circuits.
■ Consult the dealer or an experienced radio/television technician for help.
The user may find the following booklet prepared by the Federal Communications
Commission helpful:
How to Identify and Resolve Radio-TV Interference Problems
This booklet is available from the U.S. Government Printing Office, Washington,
DC 20402, Stock No. 004-000-00345-4. In order to meet FCC emissions limits,
this equipment must be used only with cables which comply with IEEE 802.3.
We declare under our sole responsibilty that the
Model: Description:
3CRWE51196 Wireless Cable/DSL Gateway
to which this declaration relates, is in conformity with the following standards or
other normative documents:
■
ANSI C63.4-1992 Methods of Measurement
■
Federal Communications Commision 47 CFR Part 15, subpart B
15.107 (a)Class B Conducted Limits
15.109 (a)Class B Radiated Emissions Limits
86 A
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
PPENDIX
EGULATORY NOTICES
: R
■
15.107 (e)Class B Conducted Limits
15.109 (g)Class B Radiated Emissions Limits
Exposure to Radio Frequency Radiation: The radiated output power of the 3Com
OfficeConnect Wireless Cable/DSL Gateway is far below the FCC radio frequency
exposure limits. Nevertheless, the 3Com OfficeConnect Wireless Cable/DSL
Gateway shall be used in such manner that the potential for human contact
during normal operation is minimized. The distance between the antennas and
the user should not be less than 5.0 cm.
CE Statement (Europe)
CSA Statement
BSMI Statement
VCCI Statement
This product complies with the European Low Voltage Directive 73/23/EEC, EMC
Directive 89/336/EEC as ammended by European Directive 93/68/EEC and the
Radio and Telecommunications Terminal Equipment Directive 99/5/EC.
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
RF Exposure
Compliance Statement
(U.S.)
Potential RF
Interference (Canada)
CAUTION: The 3Com OfficeConnect Wireless Cable/DSL Gateway has been
certified as a mobile computing device as per FCC Section 2.1091. In order to
comply with the FCC RF exposure requirements, the 3Com OfficeConnect Wireless
Cable/DSL Gateway must only be installed with approved antennas and a
minimum separation distance of 20 cm (8 in) must be maintained from the
antenna to any nearby persons.
CAUTION: To prevent radio interference to the licensed service, this device is
intended to be operated indoors and away from windows to provide maximum
shielding. Equipment (or it's transmit antenna) that is installed outdoors is subject
to licensing.
3Com Corporation, Corporate Headquarters,
5400 Bayfront Plaza, Santa Clara,
CA 95052-8145, USA.
To learn more about 3Com products and services,
visit our World Wide Web site at www.3com. com
All specifications are subject to change without notice.
Copyright © 2002 3Com Corporation. All rights reserved.
3Com and OfficeConnect are registered trademarks of
3Com Corporation. All other company and product
names may be trademarks of their respective companies.
DUA5119-6AAA01
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