Unable To Access The Internet - SMC Networks D3CM1604V Administrator's Manual

7. For secured wireless connections, be sure you entered the correct security key when
connecting to a secured wireless network.

Unable to Access the Internet

If the EMTA cannot access the Internet, it could be due to several reasons, such as a failed
Internet connection, a misconfigured EMTA, or a misconfigured NIC.
1. Unplug the EMTA.
Note: If the EMTA is located where you cannot easily unplug it, you can restart it using the
Restore / Reboot EMTA page (see "Configuring Security Settings" on page 40).
2. Turn off the EMTA for three minutes.
3. Turn off all computers attached to your network.
4. Plug in the EMTA first, turn it on, and let it boot.
5. After the EMTA completes its connection to the ISP, restart your computer.
6. Check that the EMTA's ONLINE LED is ON. If it is OFF, replace the coaxial cable
connecting the EMTA to the cable service. If the ONLINE LED does not go ON after the
EMTA has been powered up for several minutes, contact your cable provider to confirm
that the service is active.
7. If the ONLINE LED is ON, click Status > About and confirm that the Network field shows
Active (see Viewing System Software Settings on age 37). If it doesn't, contact your cable
provider to confirm that the service is active.
8. If you have more than one network port available on the EMTA, plug the cable into a
different port. If the network connection works, the original port on the EMTA is faulty.
However, you can continue to use the other ports.
9. Close any network applications that you might have opened, especially file-sharing and
peer-to-peer applications. These applications can consume large amounts of bandwidth
that can prevent you from being able to browse the Web.
10. Ping a location on the Internet (see "Testing the Path from a Computer to the Internet" on
page 59). For example, ping www.yahoo.com. If the ping succeeds, proceed to the next
step. If the ping fails:
Your Web browser may be misconfigured. Be sure you do not have an incorrect proxy
Ÿ
server setting in your Web browser.
If your computer is running a Microsoft Windows operating system, check whether the
Ÿ
computer has a corrupt winsock registry entry (refer to your Windows documentation).
The site might be down. Try to ping another site.
Ÿ
Troubleshooting Procedures
D3CM1604V EMTA Cable Modem Administrator Manual
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