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Broadband Router with 2 Phone Ports
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Chapter 1: Introduction
What’s in this Guide?
•
Appendix B: Finding the MAC Address and IP Address for Your Ethernet Adapter
This appendix instructs you on how to find the MAC address or Ethernet address of your PC’s Ethernet
network adapter.
•
Appendix C: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as
installing the TCP/IP protocol.
•
Appendix D: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
•
Appendix E: Specifications
This appendix provides the technical specifications for the Router.
•
Appendix F: Warranty Information
This appendix supplies the warranty information for the Router.
•
Appendix G: Regulatory Information
This appendix supplies the regulatory information regarding the Router.
•
Appendix H: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.
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Page 12 / 96
Broadband Router with 2 Phone Ports
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Chapter 1: Introduction
What’s in this Guide?
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Page 13 / 96
Broadband Router with 2 Phone Ports
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Chapter 2: Networking Basics
An Introduction to Local Area Networks
Chapter 2: Networking Basics
An Introduction to Local Area Networks
Simply put, a router is a network device that connects two networks together.
The Router connects your local area network (LAN), or the group of PCs in your home or office, to the Internet.
The Router processes and regulates the data that travels between these two networks.
The Router’s Network Address Translation (NAT) technology protects your network of PCs so users on the
Internet cannot “see” your PCs. This is how your LAN remains private. The Router protects your network by
inspecting the first packet coming in through the Internet port before delivery to the final destination on one of
the Ethernet ports. The Router inspects Internet port services like the web server, ftp server, or other Internet
applications, and, if allowed, it will forward the packet to the appropriate PC on the LAN side.
The Use of IP Addresses
IP stands for Internet Protocol. Every device in an IP-based network, including PCs, print servers, and routers,
requires an IP address to identify its location, or address, on the network. This applies to both the Internet and
LAN connections.
There are two ways of assigning IP addresses to your network devices.
A static IP address is a fixed IP address that you assign manually to a PC or other device on the network. Since a
static IP address remains valid until you disable it, static IP addressing ensures that the device assigned it will
always have that same IP address until you change it. Static IP addresses are commonly used with network
devices such as server PCs or print servers.
static ip address
: a fixed address
assigned to a computer or device that is
connected to a network.
nat
(network address translation): NAT
technology translates IP addresses of a
local area network to a different IP
address for the Internet.
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Chapter 2: Networking Basics
The Use of IP Addresses
If you use the Router to share your cable or DSL Internet connection, contact your ISP to find out if they have
assigned a static IP address to your account. If so, you will need that static IP address when configuring the
Router. You can get the information from your ISP.
A dynamic IP address is automatically assigned to a device on the network. These IP addresses are called
dynamic because they are only temporarily assigned to the PC or other device. After a certain time period, they
expire and may change. If a PC logs onto the network (or the Internet) and its dynamic IP address has expired,
the DHCP server will assign it a new dynamic IP address.
A DHCP server can either be a designated PC on the network or another network device, such as the Router. By
default, the Router’s Internet Connection Type is
Obtain an IP automatically
(DHCP).
The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to
assign IP addresses manually every time a new user is added to your network.
For DSL users, many ISPs may require you to log on with a user name and password to gain access to the
Internet. This is a dedicated, high-speed connection type called Point to Point Protocol over Ethernet (PPPoE).
PPPoE is similar to a dial-up connection, but PPPoE does not dial a phone number when establishing a
connection. It also will provide the Router with a dynamic IP address to establish a connection to the Internet.
By default, a DHCP server (on the LAN side) is enabled on the Router. If you already have a DHCP server running
on your network, you MUST disable one of the two DHCP servers. If you run more than one DHCP server on your
network, you will experience network errors, such as conflicting IP addresses. To disable DHCP on the Router,
see the Basic Setup section in “Chapter 5: Configuring the Router.”
dynamic ip address
: a temporary IP
address assigned by a DHCP server.
dhcp
(dynamic host configuration
protocol): a protocol that lets one device
on a local network, known as a DHCP
server, assign temporary IP addresses to
the other network devices, typically
computers.
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Broadband Router with 2 Phone Ports
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Chapter 3: Getting to Know the Router
The Back Panel
Chapter 3: Getting to Know the Router
The Back Panel
The Router’s ports and the Reset button are located on the back panel of the Router.
Internet
This
Internet
port connects to your cable or DSL modem.
Phone1
For your primary Internet phone line, the
Phone1
port allows you to connect the Router to
your telephone (or fax machine) using an RJ-11 telephone cable (not included).
Phone2
If you have a second Internet phone line, the
Phone2
port allows you to connect the Router
to your second telephone (or fax machine) using an RJ-11 telephone cable (not included).
Ethernet 1-4
These four
Ethernet
ports connect to network devices, such as PCs or more switches.
Reset Button
There are two ways to reset the Router's factory defaults. Either press the
Reset Button
for
five seconds, or restore the defaults from the Router's Web-based Utility.
Power
The
Power
port is where you will connect the power adapter.
Figure 3-1: Back Panel
NOTE:
The Voice Factory
Default feature of the Router’s
Web-based Utility is protected
by a password available only
from your Internet phone
service provider. Contact your
provider for more information.
NOTE:
The Internet port only
accepts a straight-through
cable. Do NOT connect a
crossover cable to the
Internet port.
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