Network Design Assignment (Doc)
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Added on 2020-01-21
Network Design Assignment (Doc)
Added on 2020-01-21
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NETWORK DESIGN1Network Design AssignmentTatum Spencer
NETWORK DESIGN2ContentsIntroduction.................................................................................................................................................3Assumptions in the Design..........................................................................................................................3Network Requirements...............................................................................................................................3Network Design...........................................................................................................................................4TTF WAN Architecture [1]............................................................................................................................4Technology..............................................................................................................................................4Cabling.....................................................................................................................................................4Security....................................................................................................................................................4Hardware Configuration [4][6]................................................................................................................4Diagram...................................................................................................................................................5Directory Structure [7].................................................................................................................................7Server Design [4][6].....................................................................................................................................8TTF HQ.........................................................................................................................................................9Server Farm Access Layer............................................................................................................................9Access layer.............................................................................................................................................9NIC Teaming............................................................................................................................................9Server Monitoring.....................................................................................................................................10Router [3][5]..............................................................................................................................................10Router Specification..............................................................................................................................10Router Protocols....................................................................................................................................10Security Policies and Plans [5]...............................................................................................................10User Documentation.................................................................................................................................12Ongoing Maintenance Support.................................................................................................................13References.................................................................................................................................................15
NETWORK DESIGN3Network ObjectivesIntroductionThe network for Talon Textile Fasteners (TTF) is designed to satisfy the following requirements:1)Security – the network should not allow unauthorized access, both physically andlogically.2)Speed – the network has to have adequate bandwidth. It should meet demand duringpeak usage.3)Reliability – the network should overcome redundancy and make sure that failure of onesystem doesn’t bring the entire network down.4)Scalability – the network must support sustaining scalability without the requirement torebuild the system every time a change is implemented.Assumptions in the Design1)TTF has a weak and old network design. Thus, it would be wise to build a new networkfrom scratch.2)TTF wants all the circuits to be built.3)Each department of TTF is located within accessible means. There are a few globaloffices too.4)The physical security of the network has to be maintained. 5)TTF does not share its network with other businesses.Network RequirementsTTF’s major network traffic includes file sharing including accounting details, brochures, reports,personnel profiles and financial information. The network should take care of various databasesand web pages too. At this moment, TTF needs video teleconferencing and VoIP services.
NETWORK DESIGN4Network DesignTTF will have a wide area network connecting several offices to the main headquarters. Thewide-area-network is connected to the company’s backbone network. The backbone networkconnects all local-area-networks in the branch offices to the wide-area-network. Everyemployee at TTF will be connected to a department local-area-network, which supportsdepartments to share database information and files. In the high level, TTF’s WAN follows a star architecture. However, ring architecture would beeasier to manage. Star architecture is faster because information does not travel around a ringto reach headquarters. TTF does not require a mesh network because it is expensive. TTF WAN Architecture [1]TechnologyAsynchronous Transfer Mode and Frame Relay are considered for the TTF WAN’s physical anddata layers. Ultimately, 1000Base-FX Gigabit Ethernet is chosen over fiber optic cabling [2].Both Frame Relay and ATM have latency issues during protocol conversion. The entire networkmakes use of the Gigabit Ethernet. This eliminates the need for complex protocols in the TTFnetwork. Also, the company can make incremental investments during expansion. In case, TTFplans to open a new branch, they don’t have to worry about anything. Ethernet is shared usinghubs because it is cheaper than fitting the entire building with fiber optic cables.CablingTTF WAN has connections between the branch offices and headquarters. Fiber optic cables canbe laid for this connection. It is recommended for TTF to use leased lines. SecurityTraffic into the network is managed by TTF HQ. There are points to limit the amount ofincoming data. Redundancy can be built in one of the systems to handle problematic situations.In case the HQ network faces bottle necks, entry points can be redirected to other offices.Because data has only one entry point, LANs don’t have any firewalls. Security is taken care ofby the anomaly detector and firewall in the TTF HQ machine. Hardware Configuration [4][6]The organisation relies on fiber cables. Media converters are used because departs in TTF haveLANs with 100 Mbps Ehternet over the normal Cat 5e cables. The core office can use a Layer 3switch. This will let the company configure virtual LANS in the future. For instance, salesmanagers can use the same circuit when they are within the company showcasing details tocustomers. For a Layer 3 switch, Cisco’s 3750 X Catalyst 48P-S is preferred. In the distribution
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