Cisco Cookbook

Cisco Cookbook

Chapter 1. Router Configuration and File Management
Chapter 2. Router Management
Chapter 3. User Access and Privilege Levels
Chapter 4. TACACS+
Chapter 5. IP Routing
Chapter 6. RIP
Chapter 7. EIGRP
Chapter 8. OSPF
Chapter 9. BGP
Chapter 10. Frame Relay
Chapter 11. Queueing and Congestion
Chapter 12. Tunnels and VPNs
Chapter 13. Dial Backup
Chapter 14. NTP and Time
Chapter 15. DLSw
Chapter 16. Router Interfaces and Media
Chapter 17. Simple Network Management Protocol
Chapter 18. Logging
Chapter 19. Access Lists
Chapter 20. DHCP
Chapter 21. NAT
Chapter 22. Hot Standby Router Protocol
Chapter 23. IP Multicast
Appendix A. External Software Packages
Appendix B. IP Precedence, TOS, and DSCP Classifications

Cisco Cookbook is not intended to replace the detailed feature documentation included in books such as Cisco IOS in a Nutshell (O'Reilly) or information available on Cisco's web site (http://www.cisco.com). While we don't have the space to provide details about how particular protocols actually work, you can find this information in the Internet Engineering Task Force (IETF) Request for Comment (RFC) documents (located at http://www.ietf.org/rfc.html) and a wide variety of books.

Instead, this book is a complement to those sources of information. They will tell you what a routing protocol is, how it works, and which command turns it on. Cisco Cookbook will help you select the right routing protocol and configure it in the most efficient way for your network.

This book includes a collection of sample router configurations and scripts that we have found useful in real-world networks. It also includes, wherever possible, our advice on what features to use in which situations, and how to use them most effectively. There are many common mistakes that we have seen before, and we want to help you to avoid making them.

All of the recipes in this book should work with IOS levels 11.3, 12.0, 12.1, 12.2, and 12.3. And, except where noted, they should run on any Cisco router platform. We have indicated when we use features that are only available with certain release levels or code sets, and in some cases offered workarounds for older versions. It is also important to remember that most of the recipes will work not only with Cisco routers, but also with any Catalyst switches that run IOS (but unfortunately not CatOS switches). In particular, all of the recipes that pertain to AAA, security, syslog, and SNMP should work well on these devices.