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Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
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Questions Answered: | 4870 |
Tutorials Posted: | 4863 |
MBA IT, Mater in Science and Technology
Devry
Jul-1996 - Jul-2000
Professor
Devry University
Mar-2010 - Oct-2016
I need a device chosen for every router, wifi antenna, firewall, server, etc that is outlined on the diagram (devices chosen need to support up to 10 people) I can have multiples of the same device, I also need Data backup solutions, as well as how to get the remote workers to connect to the network via some Telnet or other secure remote communication means. THIS IS ALL I NEED. The rest of the of it is completed. I will provide the Visio diagram.
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This case study is of a small- to mid-sized network. In this project you will evaluate the existing network and, based on findings and customer requirements, propose a new network design.
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Project General Information
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You are going to be working in groups of two minimum and no more than three. You are to start this project in Week 1 by contacting your fellow students through the Week 1 Discussion topic setup for this purpose and choosing the members of your team. Once you have your team in place, post your group name and members to the threaded discussion topic provided for that purpose. Should you not be a member of a group by the end of Week 1, the instructor will create and/or assign people to groups.
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Scenario:Â Widget Corporation Network Redesign
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This project involves redesigning the network infrastructure of Widget Corporation, a fictitious architectural company that designs medium to large office building in Canada, United States, and other industrial countries.Â
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The company has provided you with a short description of its current situation and future plans. As a network designer, it is your task to identify the customer requirements that allow you to provide the most effective solution.
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Company Facts
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Widget Corporation, a leading architectural firm, headquartered in Toronto, Canada and offices around the world. Demand for the company’s products is constantly increasing; therefore, the company must tighten the integration of its customers and partners into its information infrastructure.
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The company employs approximately 300 people across 10 sites. These sites are located globally and vary in size from a single part-time person working from a small office/home office (SOHO) to 150 regular office staff. The company’s headquarters consists of a building that contains approximately 150 employees. The headquarters also houses four major departments—Design, Human Resources, Marketing, and Sales.
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The company has one international office (Canada) and many remote offices in each country where it is present. All large remote offices (those that have more than five employees) within each country are permanently connected to the international office, while smaller offices (those with fewer than five employees) are connected on-demand via integrated services digital network (ISDN). Each international office provides connectivity to the headquarters for all sites within that country.
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Most of the time, the employees use universal software that converts all the company’s business workflows and runs on a mainframe. The e-mail server runs on a separate platform.
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Current Situation
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Widgets WAN is a typical hierarchical, three-tier aggregation network that uses serial lines. The links vary from low bandwidth (64 kbps to 128 kbps) between the large remote offices and the international office to higher bandwidth (up to 2 Mbps) between the international offices and the headquarters. All remote locations that have more than five employees are layer 2 switched, while smaller locations use Ethernet hubs.
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The current network does not provide any redundancy or backup strategy. Therefore, in the event of link or network equipment failure, the employees cannot perform their daily work; this results in lower productivity.
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Internet connectivity with the maximum throughput of 1 Mbps is provided via a central firewall that is located next to the mainframe.
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All internal servers (e-commerce, CAD, e-mail, and so on) are located at the headquarters. Usually (approximately 85% of the time), architects, engineers, and employees are accessing these servers; the remainder of the traffic is from the Internet. Architects and engineers use CAD software and computers to design and redesign new and current buildings.  Â
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The current infrastructure contains three 6500 Catalyst switches connected using layer 2 links. Building access switches, WAN routers, Internet firewalls, the mainframe, and Windows servers all connect to 6,500 switches. Some fast Ethernet hubs are used in the network. Currently, no redundancy is implemented in the LAN.
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Architects, engineers and users repeatedly report low response times and the IT manager mentions that they experience sporadic network outages several times during the day. Furthermore, the average WAN utilization between the headquarters and the international offices is approximately 40% and rarely exceeds 90%. The WAN utilization between international offices and the remote offices is even lower and does not seem to be the issue. The administrators are concerned about this problem and believe that it must be resolved soon.
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The network is IP-based and uses EIGRP as the routing protocol. One Class C network from the range 192.168.x.x is allocated to each LAN and WAN link. In locations where more than 252 IP addresses are required, an additional Class C network is added. Route summarization is not implemented on any router. Connections to small remote offices with ISDN connections are implemented with static routes that are redistributed into the routing protocol at the international offices.
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The data traffic is predominantly CAD files, HTTP, and e-mail because the company has implemented an intranet. In addition, the company has entered into a partnership to design a new Corporate Headquarters building for an American Software company that will require it to send CAD files of the new building electronically to their new American client. These CAD files must be secure and free from competitors hacking them.Â
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Plans and Requirements
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The company urgently needs to resolve the low response time issue and is open to any potential solution.
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The following are things that Widget Corporation would like to accomplish with its network.
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Exercise: Propose Your Network Redesign
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The following sections are intended to guide you through this customer’s network redesign.
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Campus Redesign
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IP Address Redesign
(Including the use of IP address summarization). Write an overview of your redesign and articulate why you selected that solution.Â
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Routing Campus Redesign
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American Client WAN Connection Design
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Remote Users
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Monitoring the Network
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