3COM 3CR858-91 User Manual

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How does a Device Obtain an IP Address and Subnet Mask? 101

This type of IP Address operates on a subnet mask of ‘255.255.0.0’.

See Table 5 for an example about how a network (only four computers represented) and a Router might be configured.

Table 5 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

Router

192.168.002.72

255.255.0.0

 

 

 

How does a Device Obtain an IP Address and Subnet Mask?

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-IPAddressing)

DHCP Addressing The Router 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.

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

102 APPENDIXA: IP ADDRESSING

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.

B

ISP INFORMATION

 

Information

Regarding Popular

ISPs

WAN Types

Characteristics

Popular ISPs

 

 

 

 

 

 

Dynamic IP

Cable modem ISP, non-hostname

MediaOne, RoadRunner,

(Clone MAC)

based. Need to clone the MAC

Optimum Online, Time Warner,

address in the Advanced tab of

Charter, Adelphia, Metrocast.

 

 

the Internet Settings page.

 

 

 

 

Dynamic IP

Cable ISP, Requires Hostname to

@Home Network, Cogoco,

(Hostname)

authenticate ie. cx213818-B.

ComCast, Cox, Excite, Rogers,

Need to enter the hostname in the

Shaw, Insight, Videotron

 

 

Internet Settings page.

 

 

 

 

 

 

 

PPPoE

Usually special software installed

Bell*, Century Tel, Citizens,

(DSL)

on PC, MacPOET/WinPOET,

Primus, Prodigy, Snet, Sprint FC,

EnterNet 300. The Router has this

Verizon, First World, Brightnet,

 

 

software built in and you can

Earthlink, Ameritech, Covad,

 

remove it from your PC. You will

Mindspring, Sympatico DSL,

 

need to enter the user name and

USwest, Owest, SNet

 

password that your ISP provided

 

 

to you in the PPPoE page of the

 

 

Router. Leave the service name

 

 

blank unless your ISP requires it.

 

 

 

 

 

 

 

PPTP

Cable or DSL, always on. Some

KPN (Netherlands), Austria

 

European ISPs require a PPTP

Telecom

 

tunnel to authenticate their

 

 

network.

 

 

 

 

 

 

 

104 APPENDIXB: ISP INFORMATION

Static

DSL Modem, always on. Need to

CableSpeed, Cnet, Direct Link,

(DSL)

enter ALL IP information from ISP

Drizzle, DSL Extreme, Earthlink

in the Static IP address section of

Wireless, Fast Point, Flashcom,

 

 

the Internet Settings page.

GTE-WhirlWind,Heavenet, HSA

 

 

Corp, I-55,InterAccess, LinkLine,

 

 

Mission, Nauticom, NAS, Omitel,

 

 

Onterra, Phatpipe, Rhythms,

 

 

Speakeasy, Sterling, XO, Zyan

 

 

 

Static

Cable Modem, Always on, ISP

Cox Cable, Sprint, US Cable,

(Cable)

assigns specific IP information

Cable-Cable

which needs to be entered on the

 

 

 

 

“Fixed IP” page of the Router.

 

 

 

 

*Bell includes Bell Advantage, Bell Canada, Bell South, PacBell and Southwestern Bell.

C

TECHNICALSPECIFICATIONS

 

This section lists the technical specifications for the OfficeConnect

Cable/DSL Router.

OfficeConnect

Cable/DSL Router

Standards

Interfaces

Cable/DSL modem connection — 10 Mbps/100 Mbps dual speed Ethernet port (10BASE-T/100BASE-TX)

LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX)

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

Width = 220 mm (8.7 in.)

Depth = 135.4 mm (5.2 in.)

Height = 24.2 mm (1 in.)

Weight

535 g (1.3 lb)

Functional: ISO 8802/3

IEEE 802.3

106 APPENDIXC: TECHNICALSPECIFICATIONS

Safety:

UL60950

 

EN 60950

 

CSA 22.2 #60950

 

IEC 60950

EMC:

EN 55022 Class B

 

EN 55024

 

CISPR 22

 

FCC Part 15 Class B*

 

ICES-003Class B

 

CNS 13438 Class A

 

ETSI EN 301 489–17

Environmental: EN 60068 (IEC 68)

*See “Regulatory Notices” onpage 129 for conditions of operation.

System Requirements Operating Systems

The Router 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 Router complies to the IEEE 802.3i, u and x specifications.

Cable Specifications The Router 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

SAFETYINFORMATION

 

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: Exceptional care must be taken during installation and removal of the unit.

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 60950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.

WARNING: There are nouser-replaceablefuses oruser-serviceableparts inside the Router. If you have a physical problem with the unit that cannot be solved with problem solving actions in this guide, contact your supplier.

WARNING: Disconnect the power adapter before moving the unit.

WARNING: RJ-45 ports. These are shieldedRJ-45data sockets. They cannot be used as telephone sockets. Only connectRJ-45data connectors to these sockets.

108 APPENDIXD: SAFETYINFORMATION

Wichtige Sicherheitshinweise

VORSICHT: 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:

VORSICHT: Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen.

VORSICHT: Aufgrund von internationalen Sicherheitsnormen darf das

Gerät nur mit dem mitgelieferten Netzadapter verwendet werden.

VORSICHT: 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.

VORSICHT: Der Betrieb dieses Geräts erfolgt unter denSELV-Bedingungen(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gegeben, wenn auch die an das Gerät angeschlossenen Geräte unterSELV-Bedingungenbetrieben werden.

VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung.

VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel herausziehen.

VORSICHT: 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.

109

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: Faites très attention lors de l'installation et de la dépose du groupe.

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 60950. 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.

AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer cet appareil.

AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées de donnéesRJ-45.Vous ne pouvez pas les utiliser comme prise de téléphone. Branchez uniquement des connecteurs de donnéesRJ-45sur ces prises femelles.

110 APPENDIXD: SAFETYINFORMATION

Información de seguridad

importante ADVERTENCIA: Las advertencias contienen indicaciones que debe respetar por su seguridad personal. Siga las indicaciones con cuidado.

Antes de instalar o retirar la unidad, debe leer detenidamente la siguiente información de seguridad.

ADVERTENCIA: Debe tener especial cuidado durante la instalación y retirada de la unidad.

ADVERTENCIA: Para garantizar el cumplimiento de las normas internacionales de seguridad, utilice únicamente el adaptador de corriente suministrado con la unidad.

ADVERTENCIA: El enchufe debe estar cerca de la unidad y ser de fácil acceso. La única forma de cortar la alimentación de la unidad consiste en desconectar el cable eléctrico de la toma de corriente.

ADVERTENCIA: Esta unidad funciona en condiciones SELV (voltaje extrabajo de seguridad) de conformidad con la norma IEC 950. Las condiciones sólo se mantienen si el equipo al que esté conectada la unidad también funciona en condiciones SELV.

ADVERTENCIA: La unidad no contiene fusibles ni piezas que el usuario pueda sustituir o reparar. Si tiene un problema físico con la unidad que no se pueda resolver mediante las acciones de solución de problemas de esta guía, póngase en contacto con su proveedor.

ADVERTENCIA: Desconecte el adaptador de corriente antes de mover la unidad.

ADVERTENCIA:Puertos RJ-45.Son conectores de datosRJ-45blindados. No pueden utilizarse como tomas de teléfono tradicionales estándar ni para conectar la unidad a una central de conmutación PBX tradicional ni a una red telefónica pública. Conecte sólo conectores de datosRJ-45,sistemas de telefonía de red local o teléfonos de red local a estas tomas.

Pueden conectarse cables de datos blindados o sin blindar con clavijas blindadas o sin blindar a estos conectores de datos.