Installing Your Gateway

Finding a Suitable Location

Your SMCD3GN Wireless Cable Modem Gateway can be installed in any location with

access to the cable network. All of the cables connect to the rear panel of the Gateway for

better organization and utility. The LED indicators on the front panel are easily visible to

provide you with information about network activity and status.

For optimum performance, the location you choose should:

y

Be close to a working AC power outlet.

y

Allow sufficient air flow around the Gateway to keep the device as cool as possible.

y

Not expose the Gateway to a dusty or wet environment.

y

Be an elevated location such as a high shelf, keeping the number of walls and ceilings

between the Gateway and your other devices to a minimum.

y

Be away from electrical devices that are potential sources of interference, such as ceiling

fans, home security systems, microwaves, or the base for a cordless phone.

y

Be away from any large metal surfaces, such as a solid metal door or aluminum studs.

Large expanses of other materials such as glass, insulated walls, fish tanks, mirrors,

brick, and concrete can also affect your wireless signal.

Connecting to the LAN

Using an Ethernet LAN cable, you can connect the Gateway to a desktop computer,

notebook, hub, or switch. Your Gateway supports auto-MDI/MDIX, so you can use either a

standard straight-through or crossover Ethernet cable.

1. Connect either end of an Ethernet cable to one of the four

LAN

ports on the rear panel of

the Gateway (see Figure 3).

Figure 3. Connecting to a LAN Port on the Gateway Rear Panel

16

SMCD3GN Wireless Cable Modem Gateway User Manual

Installing Your Gateway

2. Connect the other end of the cable to your computer’s network-interface card (NIC) or to

another network device (see Figure 4).

Figure 4. Connecting the Gateway to the a Laptop or Desktop Computer

Connecting the WAN

To connect your Gateway to a Wide Area Network (WAN) interface:

1. Connect a coaxial cable to the port labeled

Cable

on the rear panel of the Gateway from a

cable port in your home or office (see Figure 2 on page 13). Use only manufactured coaxial

patch cables with F-type connectors at both ends for all connections.

2. Hand-tighten the connectors to secure the connection.

3. If the modem was not installed by your cable provider (ISP) or is replacing another cable

modem, contact your cable operator to register the SMCD3GN. If the modem is not

registered with your cable operator, it will be unable to connect to the cable network

system.

Powering on the Gateway

After making your LAN and WAN connections, use the following procedure to power on the

Gateway:

1. Connect the supplied power adapter to the port labeled

12VDC

on the rear panel of the

Gateway (see Figure 2 on page 13).

2. Connect the other end of the power adapter to a working power outlet. The Gateway

powers on automatically, the

POWER

LED on the front panel goes ON, and the other front

panel LEDs show the Gateway’s status (see Table 1 on page 12).

WARNING:

Only use the power adapter supplied with the Gateway. Using a different power

adapter can damage your Gateway and void the warranty.

17

SMCD3GN Wireless Cable Modem Gateway User Manual

18

SMCD3GN Wireless Cable Modem Gateway User Manual

3 Configuring Your Computer for TCP/IP

After you install your SMCD3GN Wireless Cable Modem Gateway, configure the TCP/IP

settings on a computer that will be used to configure your Gateway. This chapter describes

how to configure TCP/IP for various Microsoft Windows and Apple Macintosh operating

systems.

The topics covered in this chapter are:

y

Configuring Microsoft Windows 2000 (page 19)

y

Configuring Microsoft Windows XP (page 20)

y

Configuring Microsoft Windows Vista (page 21)

y

Configuring an Apple

®

Macintosh

®

Computer (page 23)

Configuring Your Computer for TCP/IP

Configuring Microsoft Windows 2000

Use the following procedure to configure your computer if your computer has Microsoft

Windows 2000 installed.

1. On the Windows taskbar, click

Start

, point to

Settings

, and then click

Control Panel

.

2. In the Control Panel window, double-click the

Network and Dial-up Connections

icon. If

the Ethernet adapter in your computer is installed correctly, the

Local Area Connection

icon appears.

3. Double-click the

Local Area Connection

icon for the Ethernet adapter connected to the

Gateway. The Local Area Connection Status dialog box appears (see Figure 5).

Figure 5. Local Area Connection Status Window

4. In the Local Area Connection Status dialog box, click the

Properties

button. The Local

Area Connection Properties dialog box appears.

5. In the Local Area Connection Properties dialog box, verify that

Internet Protocol (TCP/IP)

is checked. Then select

Internet Protocol (TCP/IP)

and click the

Properties

button.

6. Click

Obtain an IP address automatically

to configure your computer for DHCP.

7. Click the

OK

button to save this change and close the Local Area Connection Properties

dialog box.

8. Click

OK

button again to save these new changes.

9. Restart your computer.

19

SMCD3GN Wireless Cable Modem Gateway User Manual

Configuring Your Computer for TCP/IP

Configuring Microsoft Windows XP

Use the following procedure to configure a computer running Microsoft Windows XP with the

default interface. If you use the Classic interface, where the icons and menus resemble

previous Windows versions, perform the procedure under “Configuring Microsoft Windows

2000” on page 19.

1. On the Windows taskbar, click

Start

, click

Control Panel

, and then click

Network and

Internet Connections

.

2. Click the

Network Connections

icon.

3. Click

Local Area Connection

for the Ethernet adapter connected to the Gateway. The

Local Area Connection Status dialog box appears.

4. In the Local Area Connection Status dialog box, click the

Properties

button (see Figure 6).

The Local Area Connection Properties dialog box appears.

Figure 6. Local Area Connection Status Window

5. In the Local Area Connection Properties dialog box, verify that

Internet Protocol (TCP/IP)

is checked. Then select

Internet Protocol (TCP/IP)

and click the

Properties

button. The

Internet Protocol (TCP/IP) Properties dialog box appears.

6. In the Internet Protocol (TCP/IP) Properties dialog box, click

Obtain an IP address

automatically

to configure your computer for DHCP. Click the

OK

button to save this

change and close the Internet Protocol (TCP/IP) Properties dialog box.

7. Click the

OK

button again to save your changes.

8. Restart your computer.

20

SMCD3GN Wireless Cable Modem Gateway User Manual