Frequently Asked Questions - Linksys Instant Broadband Series User Manual

4. When I enter a URL or IP address, I get a time out error.
• Check if other PCs work. If they do, ensure that your workstations IP
settings are correct (IP address, Subnet Mask, Default gateway and
DNS)
• If the PCs are configured correctly, but still not working, check the
Cable/DSL Router. Ensure that it is connected and ON. Connect to it
and check its settings. (If you cannot connect to it, check the LAN and
power connections.)
• If the Cable/DSL Router is configured correctly, check your Internet
connection (DSL/Cable modem, etc.) to see that it is working correctly.
• Manually configure the TCP/IP with a DNS address provided by your
ISP.
5. I can't obtain an IP address from my cable or DSL modem.
• Ensure that all of your cabling is properly connected and that all of the
router's WAN and LAN LEDs are correctly illuminated.
• Power down your cable or DSL modem for a few seconds. Turn it back
on. After the modem goes through its self-test, check to see if you now
have an IP address.
• Ensure that your cable or DSL modem is DHCP-capable.
• You may have to enter the router or host name in the Setup page of the
Router's web-based utility. Go to the Setup section of the Web-based
Utility for more information.
• Your ISP may require Mac addresses. Check with your ISP. This address
can be obtained in the Status screen of the Router's Web-based Utility.
6. I can't access my e-mail or the Internet.
• Some ISPs, especially cable providers, configure their networks so that
you don't have to enter a full Internet address into your web browser or
e-mail application to reach your home page or receive your e-mail.
• If your Internet home page address is something very simple, such as
"www", instead of "www.linksys.com," or your e-mail server's address
is something like "e-mail" or "pop3," instead of "pop.mail.linksys.com,"
you won't be able to properly configure your Cable/DSL Router until
you determine the actual Internet addresses of your Web and e-mail
connections.
• You must obtain this information before connecting the Router to your
network. To do so, you can ask your ISP, or turn to page 75 to learn
how to find this data yourself by "pinging" your Router for an IP
address.
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Instant Broadband Series
™
®
EtherFast Cable/DSL Routers

Frequently Asked Questions

How do I remove my DUN prompt for PPPoE? For Microsoft Internet Explorer
5.x or above, perform the following steps:
1. Right-click on the Internet Explorer icon on the desktop, and click
Properties.
2. Click the Configuration tab.
3. In "Choose settings if you need to configure a proxy server for a con-
necction," select the option, "Never dial a connection." Then click OK.
What is the maximum number of IP addresses that the Cable/DSL Router will
support? The Router will support up to 253 IP addresses.
Is IPSec Pass-Thru supported by the Router? Yes, it is a built-in feature that the
router automatically enables.
Where is the Cable/DSL Router installed on the network? In a typical environ-
ment, the Router is installed between the Cable/DSL Modem and the LAN.
Plug the Cable/DSL Router into the Cable/DSL Modem's Ethernet port.
Does the Cable/DSL Router support IPX or AppleTalk? No. TCP/IP is the only
protocol standard for the Internet and has become the global standard for
communications. IPX, a NetWare communications protocol used only to
route messages from one node to another, and AppleTalk, a communications
protocol used on Apple and Macintosh networks, can be used from LAN to
LAN connections, but those protocols cannot connect from WAN to LAN.
Does the WAN connection of the Cable/DSL Router support 100Mb Ethernet?
Because of the speed limitations of broadband Internet connections, the
Cable/DSL Router's current hardware design supports 10Mb Ethernet on its
WAN port. It does, of course, support 100Mbps over the auto-sensing Fast
Ethernet 10/100 switch on the LAN side of the router.
What is Network Address Translation and what is it used for? Network
Address Translation (NAT) translates multiple IP addresses on the private
LAN to one public address that is sent out to the Internet. This adds a level
of security since the address of a PC connected to the private LAN is never
transmitted on the Internet. Furthermore, NAT allows the Cable/DSL Router
to be used with low cost Internet accounts, such as DSL or cable modems,
when only one TCP/IP address is provided by the ISP. The user may have
many private addresses behind this single address provided by the ISP.
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