Never has something cried out for a cookbook quite as much
as Cisco's Internetwork Operating System (IOS). IOS is
powerful and flexible, but also confusing and daunting.
Most tasks can be accomplished in several different ways.
And you don't want to spend precious time figuring out which
way is best when you're trying to solve a problem quickly.

That's what this cookbook is for. Fortunately, most router
configuration tasks can be broken down into several more or
less independent steps: you configure an interface, you
configure a routing protocol, you set up backup links, you
implement packet filters and other access control
mechanisms. What you really need is a set of recipes that
show you how to perform the most common tasks, so you can
quickly come up with a good configuration for your site.
And you need to know that these solutions work: you don't
want to find yourself implementing a backup link at 2 A.M.
because your main link is down and the backup link you set
up when you installed the router wasn't quite right.

Thoroughly revised and expanded, Cisco IOS Cookbook, 2nd
Edition, adds sections on MPLS, Security, IPv6, and IP
Mobility, and presents solutions to the most common
configuration problems, including:
Configuring interfaces of many types, from serial to ATM and
Frame Relay
Configuring all of the common IP routing protocols (RIP,
EIGRP, OSPF, and BGP)
Configuring authentication
Configuring other services, including DHCP and NTP
Setting up backup links, and using HSRP to configure backup
routers
Managing the router, including SNMP and other solutions
Using access lists to control the traffic through the router

If you work with Cisco routers, you need a book like this to
help you solve problems quickly and effectively. Even if
you're experienced, the solutions and extensive explanations
will give you new ideas and insights into router
configuration. And if you're not experienced--if you've
just been given responsibility for managing a network with
Cisco routers--this book could be a job-saver.