3Com 3CRWER300-73, User Manual

Page: 128 / 172

126 C
HAPTER
6: T
ROUBLESHOOTING
damaged and that it is correctly inserted at both ends. You may find
that a TP cable works when connected to the Router, but does not
work if disconnected from the Router and connected to another
device. This may be because the other device does not have the
automatic MDI/MDIX feature.
Browsing to the
Router
Configuration
Screens
If you have connected your Router and computers together but cannot
browse to the Router configuration screens, check the following:
■
Confirm that the physical connection between your computer and the
Router is OK, and that the LAN Status LEDs on the Router and
network adapter are illuminated. Some NICs do not have status LEDs,
in which case a diagnostic program may be available that can give you
this information.
■
Ensure that you have configured your computer as described in
Chapter 3 . Restart your computer while it is connected to the Router
to ensure that your computer receives an IP address.
■
When entering the address of the Router into your web browser,
ensure that you use the full URL including the http:// prefix (e.g.
http://192.168.1.1
).
■
Ensure that you do not have a Web proxy enabled on your computer.
Go to the
Control Panel and click on Internet Options . Select the
Connections tab and click on the LAN Settings button at the bottom.
Make sure that the Proxy Server option is unchecked.
■
If you cannot browse to the Router, use the winipcfg utility in
Windows 98/ME to verify that your computer has received the correct
address information from the Router. From the
Start menu, choose
Run and then enter
winipcfg
. 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, Windows XP, and Windows Vista use
the
ipconfig command-line utility to perform the same functions.