NetworkDesignLocal Area NetworkIna same company, the use of the localarea network is very effective.  Theconnected computers or workstations to enable the share the data, resources andservices composed in the Local Area Network. Furthermore, the Local AreaNetwork supplies the network capability to the six computers and three colorlaser printers which will be present in an office building. In order to shareresources, files, printers or other application, the Local Area Network playsan very important role.

Furthermore, it can be connected to some other localarea network also. The cost to hardware require for the local area network isalso not much, because the local area network uses reasonable hardware like Ethernet,Wireless access point, hubs, switches, or traditional routers and networkadapter.The layout of the DesignIT consists of numerous cubicles,six computers and the server room, the LAN network will best suit this layout.The six computers, three color laser printer, and three servers that theDesignIT is planning to add into their business layout in order to increase theirorganization and the other which are already present can be interconnectedusing the local area network.

And from the server room, these computers can bemanaged so that easy sharing of files, resources and the three printers thatavailable in the DesignIT organization can be done. Wireless access point canbe in the center of area to allow mobile access to the network. Also on thisnote, sharing resources on a network means there’s central administrativecontrol, which means it’s easier to make changes, monitor, update,troubleshoot, and maintain those resources.

Network ArchitectureClient/ Server ArchitectureInthe client / server architecture, numerousnumbers of clients send the request to the server and the server respond backby sending the requested resources to the respective clients. The networkservers that provide requested resources to the clients can be one or more asper the condition or the layout of the company organization and these networkservers are also recognized as computer servers. The clients are theworkstations and are for the data and the software, they depend on the servers.The servers manage the various network tasks and services by running their own operatingsystem.Asin the layout of the DesignIT, there are several cubicles before and thecompany is planning to add six more computers, then the request and theservices of these workstations can be managed easily by using the client / serverarchitecture. There is a server room also from where the server will managethese computer’s request and respond them back with their respective request.The computers that send request can be called as clients. One or more clientcan send request to the server.

The client server architecture looks like: Theclient can be one or more and the servers also, more than one client can sendrequest to the servers and the server will send back the response the all theclients as per their requests.Local Area Network andWireless Local Area Network wiring considerationPriorto the installation of Local Area Network and Wireless Local Area Network, thereare few wiring considerations that should be kept in mind and these are:WiringEachaccess point will need a wiring closet that will run from it to the nearestIntermediate Distribution Frame. The cable will be Category 6 and the lengthcan be up to 100 meters. If through the cable, we cannot reach the area, thenthe different access point can be attached with each other through the wirelessusing meshing concept or repeaterArealayoutIfthe area layout consists of the metal, then while installing Local Area Networkand Wireless Local Area Network, then a special consideration should be kept inmind as the metal can block the signal as well as create crosstalk.CoverageHowmuch area will the Local Area Network and Wireless Local Area Network coverdepend on the fact that how large the Local Area Network and Wireless LocalArea Network system is. If the layout of the company is going to be expandingin the future, then these systems are scalable.

But initially, it is importantto save time and cost by having the needed length of the Local Area Network andWireless Local Area Network.SiteSurveyItis important to analyze coverage mapping as well as the spectrum range analysis.Spectrum range analysis will analyze the interference with other frequencies ifexist. And the coverage mapping will ensure that whether the coveragerequirements are met or notThus, it is important to consider theseconsiderations for Local Area Network and Wireless Local Area Network.Hardwareoptions and costsThehardware options and their respective cost for the DesignIT is recommended asfollows:  MODEL CONFIGURATION COST Mainboards                                    SUPERMICRO MBD-X10SRL-F Server Motherboard LGA 2011 R3 $250-$300 CPUs Intel Xeon E5-2620 V4 Broadwell-EP 2.1 GHz 8 x 256KB L2 Cache 20MB L3 Cache LGA 2011-3 85W BX80660E52620V4 Server Processor) Around $420.

00 Memory 16GB Around $90- $120 Hard Drives Three 3TB-4TB $150-$200 Boot Device Three SAMSUNG 850 EVO 2.5″ 250GB SATA III 3D NAND Internal Solid-State Drive (SSD) MZ-75E250B/AM $200-$220 Wireless Access Point CISCO WAP571 IEEE 802.11ac 1.

90 Gbit/s Wireless Access Point $200-$250 Firewall SonicWall 01-SSC-0646 SOHO Gen 6 Firewall Secure Upgrade Plus 3Yr Support $550-$600 Switch Cisco Small Business 200 Series SLM2016T-NA (SG200-18) Smart Gigabit Switch $200  SecurityConsiderationsFirewall policyFirewallby acting as a barrier between the unauthorized access and the network,protects the network and provide security. More security concerns should beadopted in order to provide better security:The information being send to the networkby the user should be encrypted first, so that no other unauthorized user canaccess the network. If by any unauthorized user access the network, it stillcould not access the private information as the encryption device is being used. For added security, the firewall should bearranged in such a way that it only accepts connection from only authorizedclients.Anti-viruspolicyThepurpose of the antivirus is to stop the malicious threats from attacking thesystem. But, various security considerations should be adopted in order toprovide more security:The anti-virus being used should have thebest virus detection rate.Regular updating should be done, in orderto add more security to the system.

Softwareoptions and costThehardware options and their particular cost for the DesignIT is suggested asfollows: MODEL CONFIGURATION COST   Productivity Suite                                        Microsoft Office 2013 Professional   $400 Anti-virus Bitdefender Internet Security 2018 – 2 Year/10 PCs $100 for 10 users CD/DVDs for backups Nero Multimedia Suite 10 $40 Email Client Microsoft Outlook $110 Operating System Window 10 professional $150-$220  Insteadof this commercial software for operating system, productivity suite, anti-virus,and email client, the free software are also available for all of thesesoftware option. CostThelabor cost, equipment cost and the service cost for the suggested cost isexpected to be as follows:     CATEGORY     DESCRIPTION     EXPECTED COST     Labor Cost It includes wages, and the payments for are medical and retirements.       $3500-$5500     Equipment Cost It includes the cost of various equipment’s like machinery, hardware and software.     $3000-$4000     Service Cost It includes the cost of different services being provided to the company personnel.     $1000-$2000  Singlepoint of failureIfthe LAN uses single switch and all the routers are connected to it, then thefailure can occur if the switch fails to work.Mitigating Technique:Ifthe server fails due to the failure in the switch, then it is suggested to usethe more than one switches so that single point of failure can be prevented.And, moreover, we can use more than one server, if one server fails to handlerequests, then other server can come into picture and handles the requests.

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