Cisco IOS in a Nutshell, 2nd Edition View Larger Image | James Boney
O'Reilly Media, Paperback, 2nd edition, Published August 2005, 796 pages, ISBN 0596008694 | List Price: $39.95
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Cisco routers are everywhere that networks are. They come in all sizes, from
inexpensive units for homes and small offices to equipment costing well over
$100,000 and capable of routing at gigabit speeds. A fixture in today's networks,
Cisco claims roughly 70% of the router market, producing high-end switches,
hubs, and other network hardware. One unifying thread runs through the product
line: virtually all of Cisco's products run the Internetwork Operating System,
or IOS.
If you work with Cisco routers, it's likely that you deal with Cisco's IOS
software--an extremely powerful and complex operating system, with an equally
complex configuration language. With a cryptic command-line interface and thousands
of commands--some of which mean different things in different situations--it
doesn't have a reputation for being user-friendly. Fortunately, there's help.
This second edition of Cisco IOS in a Nutshell consolidates the most
important commands and features of IOS into a single, well-organized volume
that you'll find refreshingly user-friendly.
This handy, two-part reference covers IOS configuration for the TCP/IP protocol
family. The first section includes chapters on the user interface, configuring
lines and interfaces, access lists, routing protocols, and dial-on-demand routing
and security. A brief, example-filled tutorial shows you how to accomplish common
tasks.
The second part is a classic O'Reilly quick reference to all the commands for
working with TCP/IP and the lower-level protocols on which it relies. Brief
descriptions and lists of options help you zero in on the commands you for the
task at hand. Updated to cover Cisco IOS Software Major Release 12.3, this second
edition includes lots of examples of the most common configuration steps for
the routers themselves. It's a timely guide that any network administrator will
come to rely on.
Table of Contents
Preface
1. Getting Started
IOS User Modes
Command-Line Completion
Get to Know the Question Mark
Command-Line Editing Keys
Pausing Output
show Commands
2. IOS Images and Configuration Files
IOS Image Filenames
The New Cisco IOS Packaging Model
Loading Image Files Through the Network
Using the IOS Filesystem for Images
The Router's Configuration
Loading Configuration Files
3. Basic Router Configuration
Setting the Router Name
Setting the System Prompt
Configuration Comments
The Enable Password
Mapping Hostnames to IP Addresses
Setting the Router's Time
Enabling SNMP
Cisco Discovery Protocol
System Banners
4. Line Commands
The line Command
The Console Port
Virtual Terminals (VTYs)
Asynchronous Ports (TTYs)
The Auxiliary (AUX) Port
show line
Reverse Telnet
Common Configuration Items
5. Interface Commands
Naming and Numbering Interfaces
Basic Interface Configuration Commands
The Loopback Interface
The Null Interface
Ethernet, Fast Ethernet, and Gigabit Ethernet Interfaces
Token Ring Interfaces
ISDN Interfaces
Serial Interfaces
Asynchronous Interfaces
Interface show Commands
6. Networking Technologies
Frame Relay
ATM
DSL
Cable
VoIP
7. Access Lists
How Packets Match a List Entry
Types of Access Lists
Specific Topics
8. IP Routing Topics
Autonomous System (AS) Numbers
Interior and Exterior Gateway Protocols
Distance-Vector and Link-State Routing Protocols
Static Routes
Split Horizon
Passive Interfaces
Fast Switching and Process Switching
9. Interior Routing Protocols
RIP
IGRP
EIGRP
OSPF
IS-IS
10. Border Gateway Protocol
Introduction to BGP
A Simple BGP Configuration
Route Filtering
An Advanced BGP Configuration
Neighbor Authentication
Peer Groups
Route Reflectors
BGP Confederacies
BGP TTL Security
11. Quality of Service
Marking
Older Queuing Methods
Modern IOS QoS Tools
Congestion Avoidance
Traffic Policing
Traffic Shaping
AutoQoS
QoS Device Manager
12. Dial-on-Demand Routing
Configuring a Simple DDR Connection
Sample Legacy DDR Configurations
Dialer Interfaces (Dialer Profiles)
Multilink PPP
Snapshot DDR
13. Specialized Networking Topics
Bridging
Hot Standby Routing Protocol (HSRP)
Network Address Translation (NAT)
Tunnels
Encrypted Tunnels
Multicast Routing
Multiprotocol Label Switching (MPLS)
14. Switches and VLANs
Switch Terminology
IOS on Switches
Basic Switch Configuration
Trunking
Switch Monitor Port for IDS or Sniffers
Troubleshooting Switches
15. Router Security
Securing Enable Mode Access
Routine Security Measures
Restricting Access to Your Router
16. Troubleshooting and Logging
ping
trace
Debugging
Logging
17. Quick Reference
Appendix.
Index
About the Author
Jim Boney has worked at Chesapeake Computer Consultants, Inc. for the last eight years as a consultant specializing in a
wide variety of subjects: network design, network management, Unix administration, and programing in various languages (Perl, Java, Tcl/Tk, and C/C++). For the
last three years, he has been working on the vLab project, which allows complete
access to Cisco routers over the Internet. Jim lives in Pasadena, Maryland with
his wife Peggy.
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