I. Introduction
II. Overview of Cisco Router Hardware and Software
A. Hardware and Software Components of the Cisco 2501 Router
B. RAM, ROM, NVRAM, and Flash in Cisco Routers
C. Router Boot Sequence
D. IOS Options
III. Basic Router IOS
A. Router Access through the Console Port
B. Router Access through Telnet
C. Command Interpreter
1. User Mode
2. Privileged Mode
D. CLI Help
1. Inline Help -- Words
2. Inline Help -- Command Syntax
3. Command Line Completion
4. Syntax Checking
5. Hot Keys Used for Editing
6. Advanced Editing
7. Command History
IV. Basic Router Configuration
A. Setup Mode
B. Manual Router Configuration
C. Setting Router Passwords
1. The Console Password
2. The Enable Password and Enable Secret Password
3. The VTY Password
4. The Auxiliary Line Password
D. Configuring an IP Address
E. Configuring Banners
F. Committing Configuration Changes to NVRAM
G. Configuring Clock Rate
V. Basic Router Maintenance and Troubleshooting
A. Backing up Router Configuration Files
B. Backing Up IOS Software Images
C. Show Commands
D. Basic Show Commands
1. Show Version
2. Show Interfaces
3. Show Protocols
4. Show Flash
E. Advanced Show Commands
1. Show Memory
2. Show Processes
3. Show Stack
4. Show Buffers
5. Show Processes CPU
6. Show CDP Neighbors
F. Debug Commands
G. Fallback
H. The Configuration Register
1. Changing the Configuration Register
2. Booting from ROM (Boot Field = 01)
3. Booting from Flash (Boot Field = 02)
VI. Appendix A. Review Questions and Answers
VII. Appendix B. Cisco Router Series
A. Series 700
B. Series 1600
C. Series 2500
1. Single LAN
2. Dual LAN
3. Router/Hub Combo
4. Access Servers
D. Series 2600
E. Series 3600
F. Series 4000
G. AGS+ and Series 7000
H. Series 7100 and 7200
I. Series 7500 and 10000
J. Series 12000