Ing. Electronico
Foundation Topics
Facilitating Remote Connections
In Chapter 1, the discussion centered, very briefly, on teleworker architectures. Now that you are familiar with some of the available options, it is an appropriate opportunity to explore the concept further. Throughout the discussions to follow, SONA will continue to guide the overall path of thesubject matter. For in-depth details regarding the various available technologies and methodologies regarding teleworkers, Cisco has published the “Business-Ready Teleworker” SRND document, available at http://www.cisco.com/go/srnd. To the outside observer, it might be quite easy to settle on the idea that the role of the teleworker, as compared to an all-out campus architecture, is a detail scribbledin the margin down near the legend on a map of the way to some grandiose treasure. Interestingly enough, the plight of the teleworker has brought about a revolution in the way businesses operate and, obviously, from where they do that business.
IIN and the Teleworker
The idea of the Intelligent Information Network (IIN) brings into focus the idea that a network should be dynamic, flexible, and,above all, consistent in the experience offered to its user community. The IIN will provide service integration and allow the shared resource pools to maximize the business productivity. Intelligent networks make it possible to merge dissimilar networks (that is, traditional data, voice, and video networks) into a single, converged network. By building in the intelligence to adapt to changingresource needs and overcome resource silos by merging multiple mission-specific networks into a single entity, a tool is forged that is greater than the sum of its parts. How is the IIN a greater tool? It does everything that its predecessors could do and more. More importantly, it can do those tasks at reduced cost due to simplification and virtualization. Cost reductions flow from having only onenetwork to maintain and support rather than several. Value is added because applications and services require no additional infrastructure above what is already part of the IIN. Teleworker connectivity is, by definition, a wide-area network (WAN) connectivity scenario. It contains many of the same needs and requirements as a branch office or other remote site. The connection must be secure, reliable,and capable of protecting critical traffic types such as voice and video.
Facilitating Remote Connections
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Enterprise Architecture Framework
SONA was assembled to address the needs of today’s enterprise networks and provide a map of how they can evolve into an IIN. To maintain the SONA mindset, Figure 2-1 repeats the illustration of the SONA model from Chapter 1.
Figure 2-1
CiscoSONA
Collaboration Layer Application Layer
PLM HCM
CRM Procurement
ERP SCM
Instant Messaging IPCC
Unified Messaging IP Phone
Meeting Place Video Delivery
Middleware and Application Platforms
Adaptive Management Services Services Management Interactive Services Application Interactive Services Layer Layer
Advanced Analytics and Decision Support
Services VirtualizationApplication Delivery Security Services Mobility Services Storage Services
Application-Oriented Networking Voice and Collaboration Services Compute Services Identity Services
Infrastructure Services
Network Infrastructure Virtualization Infrastructure Management
Networked Infrastructure Layer
Campus
Branch
Data Center
Enterprise Edge
WAN/MAN
Teleworker
ServerStorage
Clients
Intelligent Information Network
As is evident in Figure 2-1, SONA encompasses a number of architectures at the networked infrastructure layer, including campus, data center, branch, edge, WAN/MAN, and teleworker architectures. The focus of this chapter is on the teleworker portion of that framework—more specifically, the home office portion of the SOHO deployment. This chapter...
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