Cisco Enterprise Architecture Model

Last Updated on Fri, 30 Jun 2023 | CCDA

The Cisco Enterprise Architecture model facilitates the design of larger, more scalable networks. It represents the focused views of the Cisco Service-Oriented Network Architecture (SONA), which concentrates on each area of the network. SONA is covered in Chapter 1, "Network Design Methodology."

As networks become more sophisticated, it is necessary to use a more modular approach to design than just WAN and LAN core, distribution, and access layers. The architecture divides the network into functional network modules. The six modules of the Cisco Enterprise Architecture are

■ Enterprise Campus module

■ Enterprise Edge module

■ Enterprise WAN module

■ Enterprise Data Center module

■ Enterprise Branch module

■ Enterprise Teleworker module

The Cisco Enterprise Architecture maintains the concept of distribution and access components connecting users, WAN services, and server farms through a high-speed campus backbone. The modular approach in design should be a guide to the network architect. In smaller networks, the layers can collapse into a single layer, even a single device, but the functions remain.

Figure 2-4 shows the Cisco Enterprise Architecture model. The Enterprise Campus module contains a campus infrastructure that consists of core, building distribution, and building access layers, with a server farm/data center and edge distribution. Edge distribution provides distribution functions from the campus infrastructure to the Enterprise Edge. The Enterprise Edge module consists of the Internet, e-commerce, VPN, and WAN functions that connect the enterprise to the service provider's facilities. The SP Edge provides Internet, PSTN, and WAN services.

The network-management servers reside in the campus infrastructure but have tie-ins to all the components in the enterprise network for monitoring and management.

The Enterprise Edge connects to the edge-distribution module of the enterprise campus. In small and medium sites, the edge distribution can collapse into the campus-backbone component. It provides connectivity to outbound services that are further described in later sections.

Figure 2-4 Cisco Enterprise Architecture Model

Figure 2-4 Cisco Enterprise Architecture Model

Enterprise Network Architecture

Continue reading here: Enterprise Campus Module

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Readers' Questions

  • ALEESHA
    What is an enterprise architect?
    1 month ago
    • An enterprise architect is a role within an organization responsible for designing and implementing a framework that aligns an organization's strategy, processes, information, and technology. They work to understand the current state of the organization and design a future state that supports the organization's goals and objectives. Enterprise architects analyze business requirements, define systems architectures, and develop technology roadmaps. They also ensure that technology solutions are compatible with the organization's overall architecture, and they provide guidance on technology selection and implementation. In addition, enterprise architects often collaborate with other stakeholders, such as business leaders, project managers, and IT teams, to ensure the successful development and implementation of strategic initiatives. Overall, an enterprise architect acts as a bridge between business and technology, translating business needs into technical solutions to drive organizational success.