The computer network play a very important role in the business community. It is imperative for companies with remote office and branches to employ the latest technology available in the market since it provide advanced enhanced services such as high data transfer rate, real-time video, and voice, increased storage capacity and improved security features (Ivanov, 2010). As presented in the case provided, the expansion of the company is necessary in order to serve consumers efficiently. This paper discussed the technology that facilitate the connectivity between remote offices and head office using one link.
Network architecture and infrastructure
There are several architectural models that the company can use as either a foundation or upgrade of the existing network. The most commonly used three types of architectural models are topological models, flow-based models and functional models. Each of the three architectural models provide specific function in the network (Cisco, 2012). Typically, an enterprise topology is divided into three modules: data center, campus and WAN (MAN).
The use of WAN and MAN modules in the enterprise network is to facilitate the connectivity of the remote office to the head office span over distant locations. WAN technology allows for encryption, service level agreement and QoS, which ensures that information transmitted through the network such as data, voice and video services are secured. By deploying this module, the workers would be able to work efficiently from any location. In order to provide the needed security, VPN is deployed over Layer 2 and Layer 3 WAN, full-mesh or hub-and-spoke topologies.
At the remote office and branch office, Cisco Integrated Service Router (Cisco ISR) is deployed as border router at the remote locations. Cisco ISR facilitate access to secure video and voice application as well as mission-critical data. Cisco ISR also support features such as VPNs, redundant WAN links, advanced network as well as local IP telephony call processing. The WAN technology also enables the enterprise head office to configure, manage and monitor devices used at the remote offices.
The main function of the teleworkers module in the enterprise architecture is to facilitate the delivery of secure data services to the small office/home office (SOHO) places. It also increases flexibility by increasing flexibility of the work environment. In order to reduce the support costs and address the security challenges associated with SOHO, the company uses a centralized management and integrated security.
The appropriate WAN connectivity technology that facilitate the connection between remote office and head office via a single link is private WAN. The private WAN connectivity technology is used to aggregate and connect all of the company branches and remote offices into the headed or WAN core router from the side to the router interface and WAN cloud that support different physical transport methods. The Gigabit Ethernet (GE) or 10 Gigabit Ethernet (10 GigE) is typically implemented to support traffic between the WAN and campus core switches. However, this technology is very costly considering the physical infrastructure that need to be installed in place in order to facilitate effective connection.
VPNs connectivity technology involves the use of same requirements as for WAN such as supporting multiple protocols, scalability and high reliability but at a cost effective manner and with increased flexibility. For site-to-site VPN involves the use of service provider IP networks or public internet, but encryption and tunneling is deployed in order to achieve data privacy.
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