Linksys NR041 Router Manual PDF (Setup & Configuration Guide)

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™

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With Dynamic Routing, you can enable the Router to automatically adjust to

physical changes in the network’s layout. The Router, using the RIP protocol,

determines the network packets’ route based on the fewest number of hops

between the source and the destination. The RIP protocol regularly broadcasts

routing information to other routers on the network. To set up Dynamic

Routing:

1. Choose the correct

Working Mode

Gateway Mode

should be used if the

Router is hosting your network’s connection to the Internet.

Router Mode

should be selected if the Router exists on a network with other routers. In

Router Mode, any computer connected to the Router will not be able to

connect to the Internet unless you have another router functioning in the

Gateway mode.

Choose a

Dynamic Routing path protocol

for either transmission (TX:)

or reception (RX:) of network data by selecting

Enabled

When finished making your changes on this tab, click the

Apply

button fol-

lowed by the

Continue

button to save these changes, or click the

Cancel

but-

ton to undo your changes.

Click the

Show Routing Table

button to open a chart displaying how data is

routed through your LAN.

Dynamic Routing

Figure 6-18

Enter the IP address of the server that you want the Internet users to be able

to access. For information about finding the IP address, go to “Appendix F:

Finding the MAC Address and IP Address for Your Ethernet Adapter.”

6. Check the

Enable

box to enable the services you have defined. UPnP

Forwarding will not function if the

Enable

button is left unchecked. This is

disabled (unchecked) by default.

Port Triggering

From the Port Range Forwarding screen, click the

Port Triggering

button to

allow the Router to watch outgoing data for specific port numbers.

The IP

address of the computer that sends the matching data is remembered by the

Router, so that when the requested data returns through the Router, the data is

pulled back to the proper computer by way of IP address and port mapping

rules.

1. Enter the

Application Name

of the trigger.

2. Enter the

Trigger Port Range

used by the application. Check with the

Internet application for the port number needed.

Enter the

Incoming Port Range

used by the application. Check with the

Internet application for the port number needed.

Click the

Apply

button and then click the

Continue

button. Click the

Cancel

button to cancel any values you’ve entered.

Figure 6-17

Page 27 / 50

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Network Everywhere

™

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Enter the following data to create a new static route.

Destination LAN IP:

The Destination LAN IP is the address of the remote

network or host to which you want to assign a static route. Enter the

address

of the host for which you wish to create a static route here. If you

are building a route to an entire network, be sure that the network portion

of the IP address is set to 0. For example, the Router’s standard IP address

is 192.168.1.1. Based on this address, the address of the routed network is

192.168.1.x, with the last digit “x” determining the Router’s place on the

network. Therefore you would enter the IP address 192.168.1.0 if you want-

ed to route to the Router’s entire network, rather than just to the Router.

Subnet Mask:

The Subnet Mask (also known as the Network Mask) deter-

mines which portion of an IP address is the network portion, and which

portion is the host portion. Take, for example, a network in which the

Subnet Mask is 255.255.255.0. This determines (by using the values 255)

that the first three numbers of a network IP address identify this particular

network, while the last digit (from 1 to 254) identifies the specific host.

Default Gateway:

This IP address should be the IP address of the gateway

device that allows for contact between the Router and the remote network

or host.

Hop Count:

This determines the maximum number of steps between net-

work nodes that data packets will travel. A node is any device on the net-

work, such as PCs, print servers, routers, etc. The maximum metric, or

measure, of hops is 15.

Interface:

Select

LAN

WAN

, depending on the location of the static

route’s final destination.

When finished, click the

Apply

button and then the

Continue

button to

save these changes, or click the

Cancel

button to undo your changes.

If the Router is connected to more than one network, it may be necessary to set

up a static route between them. A static route is a pre-determined pathway that

network information must travel to reach a specific host or network.

From the

Static Routing tab, click the

Show Routing Table

button to view the current

static routing configuration.

To create a static route entry:

1. Select a

Static Route Entry

from the drop-down list. The Router supports

up to 20 static route entries.

To delete a Static Routing entry, select an

entry

, and click the

Delete this

entry

button.

Static Routing

Figure 6-19

Page 28 / 50

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The Router’s

MAC address

is a 12-digit code assigned to a unique piece of

hardware for identification, like a social security number. If your ISP requires

MAC address registration, find your adapter’s MAC address by following the

instructions in “Appendix F: Finding the MAC Address and IP Address for

Your Ethernet Adapter.”

Enter the 12 digits of your adapter’s MAC address in the on-screen fields (see

Figure 6-21). This “clones” your Ethernet adapter’s MAC address onto the

Router, so you do NOT have to call your ISP to change the registered MAC

address to the Router’s MAC address.

When finished making your changes on this tab, click the

Apply

button and

then the

Continue

button to save these changes, or click the

Cancel

button to

undo your changes.

MAC Address Clone

Figure 6-21

The DMZ Hosting feature exposes one local user to the Internet for use of a

special-purpose service such as Internet gaming and videoconferencing.

Port Range Forwarding forwards a maximum of 10 ranges of ports, and DMZ

Hosting forwards all the ports for one PC at the same time. DMZ Hosting is

less secure.

•

To expose one PC, enter the computer’s IP address. For more information

about finding a computer’s IP address, refer to “Appendix F: Finding the

MAC Address and IP Address for Your Ethernet Adapter.”

•

Deactivate DMZ by entering

in the field.

When finished, click the

Apply

button and click the

Continue

button to save

the settings. Otherwise, click the

Cancel

button to undo changes made on this

screen.

DMZ Host

Figure 6-20

Page 29 / 50

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For Windows 2000:

A. Click

Start

, choose

Settings

, and open the

Control Panel

. Double-click

Network and Dial-Up Connections

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

C. In the Components checked are used by this connection box, highlight

Internet Protocol (TCP/IP)

, and click the

Properties

button. Select

Use

the following IP address

option.

Enter an

IP address

that is not used by any other computer on the network

connected to the Router. You can only use an IP address in the ranges

192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(The Router’s default IP address.)

G. Toward the bottom of the window, select

Use the following DNS server

addresses

, and enter the

Preferred DNS server IP Address

and

Alternative DNS server IP Address

. Contact your ISP to find this infor-

mation.

Click the

button in the Internet Protocol (TCP/IP) Properties window,

and click the

button in the Local Area Connection Properties window.

Restart the computer if asked.

For Windows NT 4.0:

A. Click

Start

, choose

Settings

, and open the

Control Panel

. Double-click

the

Network

icon.

Click the

Protocol

tab, and double-click

TCP/IP Protocol

C. When the window appears, make sure you have selected the correct

Adapter

for your Ethernet adapter.

D. Select

Specify an IP address

, and enter an

IP address

that is not used by

any other computer on the network connected to the Router. You can only

use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and

192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(Router’s default IP address).

Click the

DNS

tab, and enter the

Host

and

Domain

names (e.g., John for

Host and home for Domain). Under DNS Service Search Order, click the

Add

button.

Enter the

DNS IP address

in the DNS Server field, and click

the

Add

button. Repeat this action for all DNS IP addresses given by your

ISP.

Click the

button in the TCP/IP Protocol Properties window, and click

the

button in the Network window.

Restart the computer if asked.

Appendix A: Troubleshooting

This appendix consists of two parts: “Common Problems and Solutions” and

“Frequently Asked Questions.” Provided are possible solutions to problems that

may occur during the installation and operation of the Router. Read the descrip-

tions below to help solve your problems. If you can’t find an answer here, check

the Network Everywhere website at

www.NetworkEverywhere.com

1. I need to set a static IP address on a PC.

The Router, by default, assigns an IP address range of 192.168.1.100 to

192.168.1.150 using the DHCP server on the Router. To set a static IP address,

you can only use the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to

192.168.1.254. Each PC or network device that uses TCP/IP must have a

unique address to identify itself in a network. If the IP address is not unique to

a network, Windows will generate an IP conflict error message.

You can assign

a static IP address to a PC by performing the following steps:

For Windows 95, 98, and Me:

A. Click

Start

, choose

Settings

, and open the

Control Panel

. Then, double-

click

Network

In The following network components are installed box, select the

TCP/IP-

Line

associated with your Ethernet adapter. If you only have one Ethernet

adapter installed, you will only see one TCP/IP line with no association to an

Ethernet adapter. Highlight it and click the

Properties

button.

C. In the TCP/IP properties window, select the

IP address

tab, and select

Specify an IP address

. Enter an

IP address

that is not used by any other

computer on the network connected to the Router. You can only use an IP

address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to

192.168.1.254.

Make sure that each IP address is unique for each PC or

network device.

Click the

Gateway

tab, and in the New Gateway prompt, enter

192.168.1.1

which is the default IP address of the Router. Click the

Add

button to accept

the entry.

Click the

DNS

tab, and make sure the

DNS Enabled

option is selected.

Enter the

Host

and

Domain

names (e.g., John for Host and home for

Domain). Enter the

DNS entry

provided by your ISP. If your ISP has not

provided the DNS IP address, contact your ISP to get that information or go

to its website for the information.

Click the

button in the TCP/IP properties window, and click

the

button for the Network window.

Restart the computer when asked.

Common Problems and Solutions

Page 30 / 50

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Click the

button in the Internet Protocol (TCP/IP) Properties window,

and click the

button in the Local Area Connection Properties window.

Restart the computer when asked.

For Windows XP:

The following instructions assume you are running Windows XP with the

default interface. If you are using the Classic interface (where the icons and

menus look like previous Windows versions), please follow the instructions

for Windows 2000.

1) Click

Start

and open the

Control Panel

Click the

Network and Internet Connections

icon and then the

Network

Connections

icon.

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

In the This connection uses the following items box, highlight

Internet

Protocol (TCP/IP)

, and click the

Properties

button.

Make sure that

Obtain an IP address automatically

and

Obtain DNS server address

automatically

are selected.

Click the

button in the Internet Protocol (TCP/IP) Properties window,

and click the

button in the Local Area Connection Properties window.

Restart the computer when asked.

For Windows NT 4.0

1) Click

Start

, choose

Settings

, and open the

Control Panel

. Double-click

the

Network

icon.

Click the

Protocol

tab, and double-click on

TCP/IP Protocol

3) When the window appears, make sure you have selected the correct

Adapter

for your Ethernet adapter and set it for

Obtain an IP address

from a DHCP server

4). Click the

button in the TCP/IP Protocol Properties window, and click

the

button in the Network window.

Restart the computer if asked.

Open a command prompt.

• For

Windows 95, 98,

and

, click

Start

and choose

Run

. In the Open

field, type in

command

. Press the

Enter

key or click the

button.

• For

Windows NT, 2000,

and

, please click

Start

and choose

Run

. In

the Open field, type

cmd

. Press the

Enter

key or click the

button.

For Windows XP:

The following instructions assume you are running Windows XP with the

default interface. If you are using the Classic interface (where the icons and

menus look like previous Windows versions), please follow the instructions for

Windows 2000.

A. Click

Start

and open the

Control Panel

Click the

Network and Internet Connections

icon and then the

Network

Connections

icon.

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

D. In the This connection uses the following items box, highlight

Internet

Protocol (TCP/IP)

. Then, click the

Properties

button.

Enter a unique

IP address

that is not used by any other computer on the net-

work connected to the Router. You can only use an IP address in the ranges

192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.

Enter the Subnet Mask,

255.255.255.0

Enter the Default Gateway,

192.168.1.1

(Router’s default IP address).

H. Toward the bottom of the window, select

Use the following DNS server

addresses

, and enter the

Preferred DNS server IP Address

and

Alternative DNS server IP Address

. Contact your ISP to find this infor-

mation.

Click the

button in the Internet Protocol (TCP/IP) Properties window.

Click the

button in the Local Area Connection Properties window.

My Internet connection isn’t working.

Check your TCP/IP settings.

For Windows 95, 98, and Me:

Refer to “Appendix D: Installing the TCP/IP Protocol” and “Chapter 4:

Configure the PCs” for details. Make sure

Obtain IP address automati-

cally

is selected in the settings.

For Windows 2000:

1) Click

Start

, choose

Settings

, and open the

Control Panel

. Double-click

Network and Dial-Up Connections

Right-click the

Local Area Connection

that is associated with the Ethernet

adapter you are using, and select the

Properties

option.

3) In the Components checked are used by this connection box, highlight

Internet Protocol (TCP/IP)

, and click the

Properties

button.

Make sure

that

Obtain an IP address automatically

and

Obtain DNS server address

automatically

are selected.

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