User manual

Contents vii
G
Example filters ................................................ 13-147
RADIUS Client Support.............................................. 13-151
RADIUS client configuration.............................. 13-151
Chapter 14 — Utilities and Diagnostics ...............................14-155
Ping ......................................................................... 14-156
Trace Route..............................................................14-158
Telnet client..............................................................14-159
Disconnect Telnet console session ............................14-160
Factory defaults........................................................ 14-160
Transferring configuration and firmware files
with TFTP .................................................................14-160
Updating firmware ........................................... 14-161
Downloading configuration files ........................ 14-162
Uploading configuration files ............................14-163
Transferring configuration and firmware files
with XMODEM........................................................... 14-163
Updating firmware ........................................... 14-164
Downloading configuration files ........................ 14-165
Uploading configuration files ............................14-165
Restarting the system...............................................14-166
Appendix A — Troubleshooting..............................................A-167
Configuration problems ............................................... A-167
Console connection problems ............................ A-168
Network problems ............................................. A-168
How to reset the router to factory defaults ................... A-169
Power outages............................................................ A-169
Technical support ....................................................... A-170
How to reach us................................................ A-170
Appendix B — Understanding IP Addressing ..........................B-173
What is IP?................................................................. B-173
About IP addressing ....................................................B-173
Subnets and subnet masks ...............................B-174
Example: Using subnets on a Class C
IP internet ........................................................B-175