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Contents vii
G
Uploading configuration files ............................. 10-16
Transferring configuration and firmware files
with TFTP .................................................................. 10-17
Updating firmware ............................................ 10-18
Downloading configuration files ......................... 10-19
Uploading configuration files ............................. 10-20
Appendix A — Troubleshooting .................................................. A-1
Power outages ..................................................... A-1
Configuration problems......................................... A-1
Console connection problems ............................... A-2
ISDN problems..................................................... A-2
Frame Relay problems .......................................... A-4
Network problems ................................................ A-5
Internal termination switch ............................................. A-6
Technical support .......................................................... A-7
How to reach us................................................... A-8
Appendix B — Understanding IP Addressing ............................... B-1
What is IP?.................................................................... B-1
About IP addressing .......................................................B-2
Subnets and subnet masks .................................. B-3
Example: Using subnets on a Class C IP internet.... B-5
Example: Working with a Class C subnet................ B-8
Distributing IP addresses ............................................... B-9
Manually distributing IP addresses ...................... B-10
Using address serving........................................ B-10
Tips and rules for distributing IP addresses.......... B-10
Nested IP subnets ....................................................... B-13
Broadcasts.................................................................. B-16
Packet header types........................................... B-16
Appendix C — ISDN Configuration Guide .................................... C-1
Definitions..................................................................... C-1