说明：  Cisco路由器应用广泛，并拥有强大的市场占有率。本书精心设计了数百个最常见的路由和交换问题，且给出了详细的解答。全书分12章，讲述了Cisco系统支持的所有IP路由协议，包括RIP、OSPF、IGRP、EIGRP、BGP、EGP和IP组播等。本书还在文中设置了注意、提示和警告，可以帮助读者更好地掌握Cisco路由器的配置技术。 本书是Cisco用户以及Cisco路由器管理和配置人员的必备参考，也是初级和中级学者们的良师益友。
(Cisco routers are widely used and has a strong market share. Carefully designed this book hundreds of the most common problem of routing and switching, and give a detailed answer. 12 book chapters, on the Cisco system supports all IP routing protocols, including RIP, OSPF, IGRP, EIGRP, BGP, EGP, etc., and IP Multicast. This book is also set up the attention of the article, tips and warnings, to help readers better grasp the technical configuration of Cisco routers. This book is the user, as well as Cisco routers, Cisco management and configuration of essential personnel as well as primary and secondary mentor scholars.)