Modules in the Enterprise Architecture
The Cisco Enterprise Architecture consists of modules representing focused views that target each place in the network. Each module has a distinct network infrastructure with services and network applications that extend across the modules. The Cisco Enterprise Architecture includes the following modules.
Enterprise Campus Architecture
A campus network is a building or group of buildings connected into one enterprise network that consists of many LANs. A campus is generally limited to a fixed geographic area, but it can span several neighboring buildings, for example, an industrial complex or business park environment. In the Span Engineering example, the campus spanned multiple floors of the same building.
The Enterprise Campus Architecture describes the recommended methods to create a scalable network, while addressing the needs of campus-style business operations. The architecture is modular and can easily expand to include additional campus buildings or floors as the enterprise grows.
Enterprise Edge Architecture
This module offers connectivity to voice, video, and data services outside the enterprise. This module enables the enterprise to use Internet and partner resources, and provide resources for its customers. This module often functions as a liaison between the campus module and the other modules in the Enterprise Architecture. The Enterprise WAN and MAN (Metropolitan Area Networks) Architecture, which the technologies covered later in this course are relevant to, are considered part of this module.
Enterprise Branch Architecture
This module allows businesses to extend the applications and services found at the campus to thousands of remote locations and users or to a small group of branches. Much of this course focuses on the technologies that are often implemented in this module.
Enterprise Data Center Architecture
Data centers are responsible for managing and maintaining the many data systems that are vital to modern business operations. Employees, partners, and customers rely on data and resources in the data center to effectively create, collaborate, and interact. Over the last decade, the rise of Internet and web-based technologies has made the data center more important than ever, improving productivity, enhancing business processes, and accelerating change.
Enterprise Teleworker Architecture
Many businesses today offer a flexible work environment to their employees, allowing them to telecommute from home offices. To telecommute is to leverage the network resources of the enterprise from home. The teleworker module recommends that connections from home using broadband services such as cable modem or DSL connect to the Internet and from there to the corporate network. Because the Internet introduces significant security risks to businesses, special measures need to be taken to ensure that teleworker communications are secure and private.
The figure shows an example of how these Enterprise Architecture modules can be used to build a business network topology.