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179

SMCD3GNV Wireless Cable Modem Gateway User Manual

6 Troubleshooting Procedures

Successful troubleshooting requires a logical, consistent approach that narrows down the

source of a problem by ascertaining what is and isn't working until a single cause is

identified. This chapter provides suggestions for identifying and resolving problems in the

unlikely event you encounter a problem using the Gateway. It also provides tips for tuning

your configuration to optimize your wired and wireless networking experience.

The topics covered in this chapter are:

Topic Subtopics

Basic Troubleshooting Procedures See page 180

Advanced Troubleshooting Procedures

• Troubleshooting Physical Network Problems (page 182)

• Troubleshooting Configuration Problems (page 183)

• Determining Your IP Address (page 183)

• Troubleshooting Software-Interaction Problems (page 187)

Specific Troubleshooting Procedures

• Unable to Log In to Gateway (page 188)

• Local Networked Devices Unable to Access the Gateway (page 188)

• Unable to Access the Internet (page 189)

• Unable to Access Networked Devices (page 191)

• Using the Ping Utility to Troubleshoot (page 191)

• Gateway Disconnects from the Internet (page 194)

• Slow Web Browsing (page 195)

• Unable to Configure Port Forwarding (page 195)

• Unable to Use Pass-thru VPN (page 195)

• Gateway is Not Passing DHCP Address to a computer (page 195)

• Determining a Computer’s MAC Address (page 196)

Wireless Troubleshooting See page 198

Application and Gaming Troubleshooting See page 204

SMC Networks SMCD3GNV User Manual

Questions and Answers: