46

Appendix A: Troubleshooting

Common Problems and Solutions

ADSL2 Gateway with 4-Port Switch

1.

To connect to the Gateway, go to the web browser, and enter http://192.168.1.1 or the IP address of

the Gateway.

2.

Enter the username and password, if asked. (The default username and password is admin.)

3.

On the Setup screen, select the option

Keep Alive

, and set the Redial Period option at 20 (seconds).

4.

Click the

Save Settings

button. Click the

Status

tab, and click the

Connect

button.

5.

You may see the login status display as Connecting. Press the F5 key to refresh the screen, until you

see the login status display as Connected.

6.

Click the

Save Settings

button to continue.

•

If the connection is lost again, follow steps 1- 6 to re-establish connection.

15.I can’t access my e-mail, web, or VPN, or I am getting corrupted data from the Internet.

The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set

automatically.

•

If you are having some difficulties, perform the following steps:

1.

To connect to the Gateway, go to the web browser, and enter http://192.168.1.1 or the IP address of

the Gateway.

2.

Enter the username and password, if asked. (The default username and password is admin.)

3.

Look for the MTU option, and select

Manual

. In the Size field, enter 1492.

4.

Click the

Save Settings

button to continue.

•

If your difficulties continue, change the Size to different values. Try this list of values, one value at a time,

in this order, until your problem is solved:

1462

1400

1362

1300

16.The Power LED flashes continuously.

The Power LED lights up when the device is first powered up. In the meantime, the system will boot up itself

and check for proper operation. After finishing the checking procedure, the LED remains steady to show that

the system is working fine. If the LED continues to flash after this time, the device is not working properly. Try

to flash the firmware by assigning a static IP address to the computer, and then upgrade the firmware. Try

using the following settings, IP Address: 192.168.1.50 and Subnet Mask: 255.255.255.0.

17.When I enter a URL or IP address, I get a time-out error or am prompted to retry.

•

Check if other computers work. If they do, ensure that your computer’s IP settings are correct (IP Address,

Subnet Mask, Default Gateway, and DNS). Restart the computer that is having a problem.

•

If the computers are configured correctly, but still not working, check the

Gateway. Ensure that it is

connected and powered on. Connect to it and check its settings. (If you cannot connect to it, check the

LAN and power connections.)

47

Appendix A: Troubleshooting

Frequently Asked Questions

ADSL2 Gateway with 4-Port Switch

•

If the Gateway is configured correctly, check your Internet connection (DSL/cable modem, etc.) to see if it

is working correctly. You can remove the Gateway to verify a direct connection.

•

Manually configure the TCP/IP settings with a DNS address provided by your ISP.

•

Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet

Explorer, click

Tools

,

Internet Options

, and then the

Connection

tab. Make sure that Internet Explorer is

set to

Never dial a connection

. For Netscape Navigator, click

Edit

,

Preferences

,

Advanced

, and

Proxy

.

Make sure that Netscape Navigator is set to

Direct connection to the Internet

.

Frequently Asked Questions

What is the maximum number of IP addresses that the Gateway will support?

The Gateway will support up to 253 IP addresses.

Is IPSec Passthrough supported by the Gateway?

Yes, it is a built-in feature that is enabled by default.

Where is the Gateway installed on the network?

In a typical environment, the Gateway is installed between the ADSL wall jack and the LAN.

Does the Gateway 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 for LAN to LAN connections, but

those protocols cannot connect from the Internet to a LAN.

Does the LAN connection of the Gateway support 100Mbps Ethernet?

The Gateway supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the

Gateway.

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 computer connected to the private

LAN is never transmitted on the Internet. Furthermore, NAT allows the Gateway to be used with low cost Internet

accounts 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.

Does the Gateway support any operating system other than Windows 98SE, Windows Millennium,

Windows 2000, or Windows XP?

Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of

any non-Windows operating systems.

48

Appendix A: Troubleshooting

Frequently Asked Questions

ADSL2 Gateway with 4-Port Switch

Does the Gateway support ICQ send file?

Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall

or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file

to a user behind the Gateway.

I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do?

If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN

computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can

also use a port forwarding range of 7777 ~ 27900. If you want to use the UT Server Admin, forward another port.

(Port 8080 usually works well but is used for remote admin. You may have to disable this.) Then in the

[UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and

ServerName to the IP assigned to the Gateway from your ISP.

Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP

address?

It depends on which network game or what kind of game server you are using.

For example, Unreal Tournament

supports multi-login with one public IP.

How do I get Half-Life: Team Fortress to work with the Gateway?

The default client port for Half-Life is 27005.

The computers on your LAN need to have “+clientport 2700x”

added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect

to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at

the same time, even if on the same LAN (not a problem with 1.0.1.3).

As far as hosting games, the HL server does

not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.

The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the

screen. What do I need to do?

Force your Ethernet adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of your

Ethernet adapter as a temporary measure. (Please look at the Network Control Panel in your Ethernet adapter’s

Advanced Properties tab.) Make sure that your proxy setting is disabled in the browser. Check our website at

www.linksys.com/international for more information.

If all else fails in the installation, what can I do?

Reset the Gateway by holding down the reset button until the Power LED fully turns on and off. Reset your DSL

modem by powering the unit off and then on.

Obtain and flash the latest firmware release that is readily available

on the Linksys international website, www.linksys.com/international.

How will I be notified of new Gateway firmware upgrades?

All Linksys firmware upgrades are posted on the Linksys international website at www.linksys.com/international,

where they can be downloaded for free. To upgrade the Gateway’s firmware, use the Administration tab of the

49

Appendix A: Troubleshooting

Frequently Asked Questions

ADSL2 Gateway with 4-Port Switch

Gateway’s web-based utility. If the Gateway’s Internet connection is working well, there is no need to download a

newer firmware version, unless that version contains new features that you would like to use.

Will the Gateway function in a Macintosh environment?

Yes, but the Gateway’s setup pages are accessible only through Internet Explorer 4.0 or Netscape Navigator 4.0

or higher for Macintosh.

I am not able to get the web configuration screen for the Gateway.

What can I do?

You may have to remove the proxy settings on your Internet browser, e.g., Netscape Navigator or Internet

Explorer. Check with your browser documentation, and make sure that your browser is set to connect directly

and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab.

Make sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit,

Preferences, Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection to the Internet.

What is DMZ Hosting?

Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet. Some applications

require multiple TCP/IP ports to be open.

It is recommended that you set your computer with a static IP if you

want to use DMZ Hosting. To get the LAN IP address, see “Appendix D: Finding the MAC Address and IP Address

for Your Ethernet Adapter.”

If DMZ Hosting is used, does the exposed user share the public IP with the Gateway?

No.

Does the Gateway pass PPTP packets or actively route PPTP sessions?

The Gateway allows PPTP packets to pass through.

Is the Gateway cross-platform compatible?

Any platform that supports Ethernet and TCP/IP is compatible with the Gateway.

How many ports can be simultaneously forwarded?

Theoretically, the Gateway can establish 520 sessions at the same time, but you can only forward 10 ranges of

ports.

What are the advanced features of the Gateway?

The Gateway’s advanced features include Advanced Filters, Port Forwarding, Routing, and DDNS.

What is the maximum number of VPN sessions allowed by the Gateway?

The maximum number depends on many factors. At least one IPSec session will work through the Gateway;

however, simultaneous IPSec sessions may be possible, depending on the specifics of your VPNs.

50

Appendix A: Troubleshooting

Frequently Asked Questions

ADSL2 Gateway with 4-Port Switch

How can I check whether I have static or DHCP IP Addresses?

Consult your ISP to obtain this information.

How do I get mIRC to work with the Gateway?

Under the Port Forwarding tab, set port forwarding to 113 for the computer on which you are using mIRC.

Can the Gateway act as my DHCP server?

Yes. The Gateway has DHCP server software built-in.

What is a MAC Address?

The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet

networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all

practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a

computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for

the network.

How do I reset the Gateway?

Press the Reset button on the back panel for about ten seconds. This will reset the Gateway to its default settings.

How many channels/frequencies are available with the Gateway?

There are eleven available channels, ranging from 1 to 11 (in North America).

If your questions are not addressed here, refer to the Linksys international website,

www.linksys.com/international.