Service-Oriented Network Architecture
An intelligent network is delivered using the Service-Oriented Network
Architecture (SONA) framework. SONA sees a converged network as the
connecting thread for all the portions of the network and the services provided.
The network is application aware; that is, it contains the intelligence needed
to tie all the various types of traffic together to deliver required services.
SONA defines three layers:
�¡ Network Infrastructure.IT resources such as servers, users, WANs,
and office locations all connected and accessible to each other
�¡ Integrated Services.Services such as voice, network management,
mobility, security, and storage that are delivered using the network
infrastructure
�¡ Application.Business applications that function using the integrated
services
In an enterprise, the campus and branch offices, teleworker access, and WAN
access all fall under the Network Infrastructure layer of the SONA. This
categorization allows workers in all types of locations to access the services
and applications of the other layers. The Cisco Enterprise Architecture
defines how each of these components should be designed and structured.