Netgear DM111Pv2 ユーザーズマニュアル
Troubleshooting
17
If the modem does not save changes you have made in the Web Management Interface, check the
following:
following:
•
When entering configuration settings, be sure to click the Apply button before moving to
another menu or tab, or your changes are lost.
another menu or tab, or your changes are lost.
•
Click the Refresh or Reload button in the Web browser. The changes may have occurred, but
the Web browser may be caching the old configuration.
the Web browser may be caching the old configuration.
Troubleshooting the Internet Connection
If your computer is connected to your modem via a router, disconnect the router and directly
connect the computer to the modem. If you now have Internet access, use the documentation that
came with the router to perform re-installation and troubleshooting.
connect the computer to the modem. If you now have Internet access, use the documentation that
came with the router to perform re-installation and troubleshooting.
If your modem is unable to access the internet, but your Internet LED is green or blinking green,
you should determine whether the modem is able to obtain an IP address from the ISP. Unless you
have been assigned a static IP address, your modem must request an IP address from the ISP. You
can determine whether the request was successful using the browser interface.
you should determine whether the modem is able to obtain an IP address from the ISP. Unless you
have been assigned a static IP address, your modem must request an IP address from the ISP. You
can determine whether the request was successful using the browser interface.
To check the WAN IP address from the browser interface:
1.
Launch your browser and select an external site such as
www.netgear.com
.
2.
.
3.
Under the Maintenance heading, select Modem Status. Check that an IP address is shown for
the ADSL Port. If 0.0.0.0 is shown, your modem has not obtained an IP address from your ISP.
the ADSL Port. If 0.0.0.0 is shown, your modem has not obtained an IP address from your ISP.
If your modem is unable to obtain an IP address from the ISP, the problem may be one of the
following:
following:
•
Your ISP may require a Multiplexing Method or Virtual Path Identifier/Virtual Channel
Identifier parameter.
Identifier parameter.
Verify with your ISP the Multiplexing Method and parameter value, and update the router’s
ADSL settings accordingly.
ADSL settings accordingly.
•
If your ISP requires PPP over Ethernet (PPPoE) or PPP over ATM (PPPOA), check that your
login credentials are correct. See
login credentials are correct. See
.
•
Log in to the modem interface, note the modem and ADSL status, run the diagnostics test, and
contact your ISP’s technical support representative. See the User Manual for detailed
information.
contact your ISP’s technical support representative. See the User Manual for detailed
information.