Enterprise Composite Network Model

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This network topology model is used in large enterprise networks to break the network into physical, logical, and functional units. This breakup is performed to scale the model to all sizes of networks.

The enterprise composite model is a modular approach to network design that supports the hierarchical network design structure in all modules of the enterprise (CAN, WAN, and service providers).

The enterprise composite model divides the network into three functional components.

This provides a deterministic approach to network design that clearly defines boundaries for security and traffic management purposes. The model also allows a designer to divide a large network into smaller components for expansion purposes. The advantages of the composite model are listed below.

  • The model allows designers to concentrate on a single module and its interactions.
  • The boundaries allow clear definition of entry points for traffic policy enforcement.
  • The model provides integrity to the design for adding services or features on a module by module basis or for the network as a whole.

Enterprise Composite Network Example

Enterprise Composite Network Example

The visual shows the basic breakdown of the enterprise network. The three functional modules are shown as well as the components that are carried in each module. Contained in each module are hierarchical layers as needed (core layer, distribution layer, access layer).

The Enterprise Campus provides those elements that are required to build the main portion of the enterprise network. It supports reliability, availability, scalability, and flexibility for those services and could operate independently of the other modules.

The Enterprise Edge module aggregates connectivity to and from the campus module. The edge is responsible for secure and reliable interconnectivity with remote locations, users, Extranet connections, and the Internet.

The Service Provider Edge module(s) enable the communications to service providers that are using a different WAN technology and the Internet.