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182
SMCD3GNV Wireless Cable Modem Gateway User Manual
Advanced Troubleshooting Procedures
Most advanced troubleshooting procedures fall into one of the following categories:
Physical - an underlying problem with cables, a bad Gateway, or similar hardware
problem. See page 182.
Configuration - a problem with the configuration of one or more of network co mponents.
See page 183.
Software - a failure of one or more software applications, an undesired interaction
between two or more applications, or an undesired application that has been introduced
into the network. See page 187.
Troubleshooting Physical Network Problems
When you experience network troubles, start by checking the physical network devices and
connections. These problems are the most easily fixed and include:
Performing a thorough physical inspection of your network.
Checking that all hardware devices, including the Gateway, are plugged in and
physically connected to the network.
Making sure you are using the proper network cables (for example, not using a
crossover cable with a NIC that requires a straight-through cable).
Making sure all network cables are in good condition and well seated. Often, reseating
the cable into a connector is all that is required to ensure a firm connection.
In addition, some operating systems, such as Microsoft Windows XP, show errors, such as
when a network cable is unplugged. Figure 2, for instance, shows examples of how
Microsoft Windows XP shows connection statuses in the Network Connections window. For
information about other operating systems, refer to the documentation for those operating
systems.
Summary of Contents for SMCD3GNV3
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