large networks of complex systems, with a lot of devices are united together only by the power of the specification describes a network designer. Designing Large Scale LANs how the parts of a large local area network (LAN) interoperate. LAN A, in the definition of author Kevin Dooley's work here, is a building the size of the data network, or perhaps a campus-size system with a backbone running Gigabit Ethernet, ATM, or FDDI. Dooley does a good job teaching the reader about, for example, the processing overhead involved in address translation or protocol tunneling, and why such techniques should be used sparingly in a LAN that need to quickly and efficiently. That said, Dooley spent a lot of time on network fundamentals. Vendor-neutral to a fault, this book explains the relative benefits of LAN media and topologies, and go into detail about how to design the addressing scheme for routing efficiency.