This book, "Cisco Routers for the Desperate, 2nd Edition," serves as a comprehensive guide for small network administrators who manage a few Cisco routers. It begins by introducing router basics, including interfaces and command-line operations, and then progresses to practical applications such as connecting to the internet and establishing private wide area network connections between offices. The text also covers crucial aspects of router maintenance and security, including troubleshooting common issues, managing logins and remote access with Telnet and SSH, and configuring network services like NTP and SNMP. Finally, it addresses advanced topics such as implementing Border Gateway Protocol (BGP) for redundancy and ensuring network stability through Spanning Tree Protocol and Cisco Discovery Protocol, while also explaining the fundamentals of IP addresses and netmasks.