Huitema delivers unparalleled practical insight for architecting 21st century enterprise networks. The book contains extensively updated coverage of the OSPF (Open Shortest Path First) intra-company protocol and BGPv4 (Border Gateway Protocol) for connecting enterprises to Internet service providers. Huitema introduces policy routing and RSVP (Resource Reservation Protocol), demonstrating how approaches like these can be used to ensure that all applications get the bandwidth and quality of service they require. There are also chapter-length discussions of multicasting and mobility. PC Week called the first edition "surprisingly approachable"; IEEE Communications called it "Excellent, " Cisco Systems called it "Recommended Reading." The new Second Edition will be even more valuable.