Troubleshooting Procedures
52
D3CM1604 DOCSIS 3.0 Cable Modem Administrator Manual
Your Web browser may be misconfigured. Be sure you do not have an incorrect proxy
server setting in your Web browser.
If your computer is running a Microsoft Windows operating system, check whether the
computer has a corrupt winsock registry entry (refer to your Windows documentation).
The site might be down. Try to ping another site.
If your additional pings fail, please contact technical support.
11.
Check your computer’s operating system to see whether the computer has connectivity
(refer to the documentation for your operating system). If it doesn’t, try using another
computer and NIC attached to the cable modem to connect to the Internet.
12. Try accessing the Internet with a different browser. If you succeed, the problem exists with
the previous browser you used.
Cannot Access Networked Devices
If you are on a network, but cannot connect to any resources on the network:
1. The Ethernet cable may be worn. Replace the cable if it is worn.
2. The Ethernet cable may not be firmly connected at both ends. Secure the cable at both
ends. Often, just reseating the cable into a connector is all that is required.
3. The NIC may be bad or the cable connected to the NIC may be the wrong kind of network
cable (for example, you may be using a straight-through cable when a crossover cable is
required). If you have another NIC available, try using it instead of the one currently used.
4. Ping the IP address of other computers and devices on your network.
5. For Windows operating systems, try connecting to a computer on the network using
Start \
Run
and enter
\\
PCname
, where
PCname
is the name of the computer to which you want
to connect.
Tip:
Browsing is a fairly complicated issue and has a lot of places for failure. If you need to
have resources available, create shortcuts on your desktop instead.
Using the Ping Utility to Troubleshoot
You can use your computer’s ping utility to test the path from the computer to the cable
modem and from your computer to the Internet.
Testing the Path from a Computer to the Cable Modem
You can ping the cable modem to verify that the LAN path from your computer to the cable
modem is set up correctly. To ping the cable modem from a Windows computer:
