PREP ARATION AND SETUP
Before using the router to connect your LAN to the Internet,you must:
• Order Internet service from an Internet service provider (ISP)
• Set up your PCs for using the Transmission Control Protocol/Internet Protocol (TCP/IP)
networking protocol
ISP Checklist
Contact an ISP to request a single-user Internet access account that provides a broadband access device,
such as a cable modem or DSL modem, to connect the router to the Internet.You can connect a multiuser LAN through a single-user account by using the Network Address Translation (NAT) feature of the
router.The modem must have a standard Ethernet interface to connect to your router.
In a single-user account,you are assigned only one registered IP address.This address may be a permanent, fixed address or it may be an address assigned dynamically when your modem connects to the ISP.
The NAT feature of your router will map the IP addresses of your PCs to this address for accessing the
Internet.Some applications may be incompatible with NAT.
Account Information
Unless the following information is dynamically assigned,your ISP should provide you with this basic
account information:
• IP address
• Subnet mask
• Domain name system (DNS) server IP addresses
• Gateway IP address
• Host name and domain name
Your account’s full server names may look like this:
mail.xxx.yyy.com
In this example, the domain name is xxx.yyy.com
If an ISP technician configures your PC during modem installation, you may need to obtain the account
information from your PC’s network setup.Refer to the
Reference Guide for the Model RT311 and
RT314 Internet Access Gateway Routers
, on the
Model RT311 and RT314 Resource CD
, for info rma -
tion about this procedure.
Determine whether your account uses a special login protocol:
• If your ISP uses PPP over Ethernet (PPPoE),you will need a login name and password,
and you will need to select PPPoE in the router configuration.
• If your ISP is RoadRunner, you should ask whether your PC must run a RoadRunner
login program.