3com 3CRWDR200B-75 ユーザーズマニュアル

C

HAPTER

 6: T

ROUBLESHOOTING

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If you cannot browse to the Router, use the winipcfg utility in 
Windows XP to verify that your computer has received the correct 
address information from the Router. From the Start menu, 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 Router is 192.168.1.1 (the 
address of the Router). If these are not correct, use the Release and 
Renew functions to obtain a new IP address from the Router. Under 
Windows 2000,XP,and Vista, use the ipconfig/all

 

command-line utility 

to perform the same functions.

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

.

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

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Confirm that the physical connection between the Router and the 
broadband connection is OK, and that the Sync DSL LED and Data DSL 
LED on the Router are illuminated. If the Sync DSL LED is off, check the 
physical connection path to the ADSL line. If the Sync DSL LED is on, 
but the Data DSL LED is off, confirm the login details are correct and 
the ADSL service is available (contact your ISP for the status)

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Confirm that ADSL filter is connected.

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

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Check that the PPPoE, PPPoA 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.

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