Specific Troubleshooting Procedures; Cannot Log In To; Local Networked Devices Cannot Access The Cable Modem - SMC Networks D3CM1604 Administrator's Manual

where the problem is and you can either replace that product with one that does not cause
problems or change the program's configuration to resolve the problem.
4. When you have everything working, reconnect your devices to the Internet.
5. Restart all your computers.

Specific Troubleshooting Procedures

The following sections cover specific troubleshooting suggestions you may find helpful if the
basic and advanced troubleshooting procedures in the previous sections did not resolve
your problem.

Cannot Log In to

If you are cannot log in to the cable modem's Web management interface:
1. Confirm that the Ethernet cable connecting the computer and cable modem is connected
securely at both ends. Often, just reseating the cable into a connector is all that is required.
2. If you have more than one network port available on the cable modem, plug the cable into
a different port. If the network connection works, the original port on the cable modem is
faulty. However, you can continue to use the other ports.
3. The NIC in your computer might have failed. If possible, connect a different computer to
the same network cable. If the connection works, the problem is with the NIC. Contact the
NIC manufacturer for support or install a new NIC. If the new computer also fails to
connect, replace the Ethernet cable with a new cable, as you might have a faulty cable. If
the problem persists, contact technical support for the cable modem supplier.
4. Be sure you are using the correct login information.

Local Networked Devices Cannot Access the Cable Modem

If devices on the local network cannot access the cable modem:
1. Go to Status > Connection.
2. Under the Startup Procedure, check for error statuses. If your statuses show no local
network connection and/or no clients connected, proceed to the next step.
3. Ping the cable modem from a computer on the same subnet as the cable modem (see
"Testing the Path from a Computer to the " on page 52). If the ping fails and there is no
firewall software installed, your network configuration, NIC, or cabling is probably at fault.
4. Release and renew the NIC's IP address:
a. From the Windows task bar, click Start and select Run.
b. In the Open field, type cmd and click OK.
Troubleshooting Procedures
D3CM1604 DOCSIS 3.0 Cable Modem Administrator Manual
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