3com 3CRWE52196 Guida Utente

C

HAPTER

 6: T

ROUBLESHOOTING

choose Run and then enter 

. Check that the computer has 

an IP address of the form 192.168.1.xxx (where xxx is in the range 
2-254), the subnet mask is 255.255.255.0, and the default Gateway is 
192.168.1.1 (the address of the Gateway). If these are not correct, use 
the Release and Renew functions to obtain a new IP address from the 
Gateway. Under Windows 2000, use the ipconfig command-line utility 
to perform the same functions.

■

If you still cannot browse to the Gateway, then use the Discovery 
program on the accompanying CD-ROM as described in 

If you can browse to the Gateway configuration screens but cannot 
access sites on the Internet, check the following:

■

Confirm that the physical connection between the Gateway and the 
cable/DSL modem is OK, and that the link status LEDs on both 
Gateway and modem are illuminated.

■

Confirm that the connection between the modem and the cable/DSL 
interface is OK.

■

Ensure that you have entered the correct information into the 
Gateway configuration screens as required by your Internet Service 
Provider. Use the “Internet Settings” screen to verify this.

■

For DSL users, check that the PPPoE or PPTP user name, password and 
service name are correct, if these are required. Only enter a PPPoE 
service name if your ISP requires one.

■

For cable users, check whether your ISP required a fixed MAC 
(Ethernet) address. If so, use the Clone MAC Address feature in the 
Gateway to ensure that the correct MAC address is presented, as 
described on 

■

Ensure that your computers are not configured to use a Web proxy. 
On Windows computers, this can be found under Control Panel > 
Internet Options > Connections.

If you can browse to the Gateway configuration screen but cannot log on 
because you do not know or have forgotten the password, follow the 
steps below to reset the Gateway to it’s factory default configuration.