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Local Area Network Implementation, Research Paper Example

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Words: 1109

The computer networks facilitated vastly, in the small medium enterprises and the corporate sector. The purpose is to make the environment paperless along with effective results of processes. Health First Hospital Foundation is a charitable organization. As a result of the expansion of the organization, the HHF requires a computerized environment to eliminate the hassle of the manual paperwork.

Topology

We will apply star topology. As the network design will follow a centralized server / client architecture.

Workstations

The minimum hardware specification of the workstations:

System specification
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	DVD Drive 16 X
Chassis	Thermal HT Support

Network devices

Network devices are the objects for any network. The network functionality relies on the network devices .The dependability of the network devices emphasizes on the requirements of the organization. For example, organization dealing with 3D animation and rich media may require a Gigabit Ethernet rather than Fast Ethernet. This is because the sub ordinates share the animated data among themselves for various purposes. The 3D animation contents are large in volume and require gigabit Ethernet for moving files at a high speed within the network.

Switch Implementation

Fast Ethernet switches will be implemented instead of hubs. Switches are more powerful and intuitive as compared to hubs. There are 6 departments excluding the board room. Six fast Ethernet 10/100 switches will be installed in each department. The switches will be connect to the router.

Router Implementation

Routers are implemented on a Wide Area Network (WAN) as well as on the Local Area Network (LAN). There are six switches in each department. For eliminating the unnecessary broadcast within a LAN domain, ACL can be configured to minimize the unwanted broadcast from each network node. Access rights and permissions can also be configured for restricting the user at certain level.

Access Control List (ACL)

ACL can be configured for restricting and allowing the access of any network resource to the specific user or group of users. In HHF, board room required access to all the network resources. In this case, the user available in the board room is permitted to access to all the resources of the network. The IP address of the system in the board room will have access to every host in every department. In

Network Server

The network server can be a domain controller, firewall or Windows NT server. The requirement of the network server will emphasize on the requirements of the network. Network containing 62 network nodes may require a domain controller for the administration of user accounts and permissions.

HHF Network Model

IP Addressing Scheme

IP version 4 scheme is best suited and cost effective for LAN implementation. The IP v6 required a high budget as the network devices supporting IP v6 are expensive, equipped with the latest technology as compared to the IP v4 Network devices.

We have:

Total Number of hosts = 62

IP Addresses range: 192.168.0.1 to 192.168.0.255

Total Usable IP addresses: 192.168.0.3 to 192.168.0.254 = 252

Gateway IP address: 192.168.0.1

Router IP Address: 192.168.0.2

VLAN can be implemented on “layer 3” switches to provide different IP addresses for each department.

Allocation of Network and Host

192.168.0.1

The blue digits represent the network part. The brown digits represent the Host part.

Splitting up of IP Address

Class	Range	Network Address	Host Address
A	0-127	xxx	xxx.xxx.xxx
B	128-191	xxx.xxx	xxx.xxx
C	192-223	xxx.xxx.xxx	xxx

In Figure 3.3, the range is specifying the class of the P address. The network and host addresses are showing the available bytes for allocation.

Cabling:

For implementing this network, “CAT 5” cable is used. The length required for each switch depends on the distance and the location of the router. Wikipedia defines it as “Category 5 cable includes twisted pairs in a single cable jacket. This use of lines helps preserve a high signal-to-noise ratio despite interference from both external sources and other pairs (this latter form of interference is called crosstalk). It is most commonly used for 100 Mbit/s networks”

Cost:

The cost is calculated separately for each department. The cost includes, network devices, Workstations and Operating system software.

Administration Department

System Specification and Cost Including Windows Vista
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	HP DVDRW 24X SATA
Chassis	Thermal HT Support
Total cost of workstations	300 x 18 = 5400 Euros
Network Device Specification and Cost
Network switch	100 Euros
Total cost of network	100 Euros
Grand total cost	5500 Euros

Human Resources

System Specification and Cost Including Windows Vista
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	HP DVDRW 24X SATA
Chassis	Thermal HT Support
Total cost of workstations	300 x 9 = 2700 Euros
Network Device Specification and Cost
Network switch	1 x 100 = 100 Euros
Total cost of network	100 Euros
Grand total cost	2800 Euros

Accounting

System Specification and Cost Including Windows Vista
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	HP DVDRW 24X SATA
Chassis	Thermal HT Support
Total cost of workstations	300 x 13 = 3900 Euros
Network device Specification and cost
Network switch	1 x 100 = 100 Euros
Total cost of network	100 Euros
Grand total cost	4000 Euros

Media Relations

System Specification and Cost Including Windows Vista
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	HP DVDRW 24X SATA
Chassis	Thermal HT Support
Total cost of workstations	300 x 4 = 1,200 Euros
Network Device Specification and Cost
Network switch	1 x 100 = 100 Euros
Total cost of network	100 Euros
Grand total cost	1,300 Euros

MIS

System Specification and Cost Including Windows Vista
Processor	Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB)
Motherboard	Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB)
Memory	1GB DDRII (800 Bus)
Hard drive	320GB 3.5″ SATA-II 7200RPM
Optical drive	HP DVDRW 24X SATA
Chassis	Thermal HT Support
Total cost of workstations	300 x 6 = 1800 Euros
Network Device Specification and Cost
Network switch	1 x 100 = 100 Euros
Total cost of network	100 Euros
Grand total cost	1900 Euros