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SMCD3GNV Wireless Cable Modem Gateway User Manual
Troubleshooting Physical Network Problems .................................................... 182
Troubleshooting Configuration Problems .......................................................... 183
Determining Your IP Address ...................................................................... 183
Troubleshooting Software-Interaction Problems ............................................... 187
Specific Troubleshooting Procedures ...................................................................... 188
Unable to Log In to Gateway ............................................................................. 188
Local Networked Devices Unable to Access the Gateway ................................ 188
Unable to Access the Internet ........................................................................... 189
Unable to Access Networked Devices ............................................................... 191
Using the Ping Utility to Troubleshoot ............................................................... 191
Testing the Path from a Computer to the Gateway ..................................... 191
Testing the Path from a Computer to the Internet ....................................... 192
Using Ping on a Macintosh .......................................................................... 193
Gateway Disconnects from the Internet ............................................................ 194
Slow Web Browsing ........................................................................................... 195
Unable to Configure Port Forwarding ................................................................ 195
Unable to Use Pass-thru VPN ........................................................................... 195
Gateway is Not Passing DHCP Address to a computer .................................... 195
Determining a Computer’s MAC Address .......................................................... 196
Microsoft Windows ...................................................................................... 196
Apple Macintosh Windows OS X ................................................................. 197
Wireless Troubleshooting ........................................................................................ 198
Checking the Gateway’s Wireless Connection .................................................. 198
Wireless Range is Low ...................................................................................... 198
Unable to Connect to a Wireless Network Using Windows XP and Vista ......... 199
Achieving Optimal Wireless Performance ......................................................... 201
Guidelines for Improving Your Wireless Network .............................................. 201
Wireless IEEE 802.11n Guidelines .................................................................... 202
Application and Gaming Troubleshooting ............................................................... 204
Connecting to Messenger Services Behind the Gateway .................................
204
Connecting
to America Online Behind the Gateway ......................................... 204
Connecting to XBox Live, PSP, and Nintendo WFC ......................................... 204
Appendix A - Specifications ............................................................................... 205
Appendix B - Compliances ................................................................................. 209
Index ..................................................................................................................... 211
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