© 2004 Cisco Systems, Inc. All rights reserved. ARCH v Module Summary The Enterprise Composite Network Model enables network designers to create a campus network made out of modular building blocks, which are scalable to meet evolving business needs. Design criteria for planning the Campus Infrastructure includes functionality, performance and cost requirements. A large-scale server farm or data center must be able to support direct end systems and server connectivity, while offering performance, scalability, and availability.