User's Manual

Contents
vi
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 .......................................................... 錯誤! 尚未定義書籤。
Appendix B - Compliances ............................................................ 錯誤! 尚未定義書籤。
Index .................................................................................................................................... 207