Load balancing improves network performance by distributing traffic efficiently so that individual servers are not overwhelmed by sudden fluctuations in activity. "Server Load Balancing" is a guide to this critical component of high availability, clustering, and fault tolerance, all of which provide the infrastructure for reliable Internet sites and large corporate networks. It explains to engineers and technicians the concepts and terminology of load balancing and offers practical guidance for planning and implementing it in almost any environment. It also includes a configuration guide with diagrams and sample configurations for installing, configuring, and maintaining products from the four major vendors: Alteon WebSystems; Cisco's CSS Series (formerly ArrowPoint); F5's BIG-IP; and the Foundry ServerIron series. By comparing several load balancing products, the text aims to provide a deeper understanding of the technology and how best to use it to improve one's network performance.