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# Computer networks: Operation and application

Extracts from this document...

Introduction

Computer networks: Operation and application Abstract In the definition of he coursework the iTekx Company Plc has basically five different departments with the number of computers. The computers of the different departments have to be connected with the computers with their own departments. For that I have define a LAN for each departments so the computers of each departments are connected with the one common switch. Each department is having its own switch. Secondly each departments should be connected with other departments because to share the business information with the other departments as the information of the one department can be used by some another department. To solve this problem I have put one router and connect each switch of different department with it. So the information can be pass out via router to another department. I have defined IP addresses to each department and subnets and subnets mask of different departments. I have used different books and used many websites to solve out this definition of the coursework. Introduction Subnetting Scheme Firstly, iTekx company has the IP address 200.5.6.0. Basically it shows it is the class c address. In the IP address format is 32 bit in length and it has two parts: the network number or address and the host number or address. Normally IP addresses are binary in nature, but they are expressed in a format that can be read by the human eye. This 3 bit address are divided into four section of 8 bits. It is known as octets. Each of this octets is then converted into decimal format and separated by dots. ...read more.

Middle

So the remaining 30 network address within this network can be assign to the hosts in the network. Like the above diagram all the departments have this kind if IP addresses and the host addresses. 192.168.10.64 192.168.10.65 192.168.10.66 . . . 192.168.10.95 192.168.10.96 192.168.10.96 192.168.10.97 192.168.10.98 . . . 192.168.10.126 192.168.10.127 Training Dept 1 Training Dept 2 The iTekx company has the two training department called Training department 1 and training department 2, T1 is having 14 host in its network and T2 has 12 hosts in its network. 192.168.10.128 192.168.10.129 192.168.10.130 . . . 192.168.10.158 192.168.10.159 192.168.10.160 192.168.10.161 192.168.10.162 . . . 192.168.10.190 192.168.10.191 MMC R'n'D On the first floor of the iTekx company there are two departments called MMC and R'n'D department having 16 and 24 hosts in each department. ` The above diagram shows the basic network diagram of the Administration department, training department 1 and the training department 2. The network address are given to the each host of the network. All the host are connected to the switch via Ethernet. The network address is also given too the switches are 192,168.10.33 (Admin Dept), 192.168.10.65 (Training 1), 192.168.10.96 (Training 2), 192.168.10.129 (MMC), 192.168.10.161(R'n'D). This network connection enables the host of each department to connect the other host of the same department. As we have already assign the Network address to all the hosts of the each departments. We need to assign the network address to each switch of the departments. After establish the network within the different departments, we need to establish the connection between the all the departments because may the information of the different department can be used by the another departments. ...read more.

Conclusion

The advantages of this mechanism are that every incoming packet must transits two filters and one application gateway to go in or out. Conclusion and further work: The network design which I have used in my coursework, I think it is the quality solution of the given application of the iTekx company Plc. Firstly I have thought it is a small company, and the design of the network is smaller too. There are mainly five departments each department is having minimum of 10 and maximum of 24 computers or hosts. I have use the quality of equipments which are really cheaper then other costly available networking devices. This can be very easily efforts by the small company like iTekx Company Plc. In the conclusion of my coursework I feel that the network part like subnetting, routing, cabling, switching, which is represented in the diagrams are the good solution for the iTekx company Plc with the proper security solutions. But I can implement more security on this network bye using NAT technology. Which are mostly used by the private networks to prevent the unauthorized access and internet threats. Reference and supporting materials I have used merely two books to understand the concepts and the definitions of the network and the network devices. These books are - Interconnecting Cisco Network Devices - CISCO Systems - Computer Networks - Andrew S. Tanenbaum Even I have got some useful information from the internet websites too. These websites are. - http://www.sethenol.com/subnetex.htm - http://www.rhyshaden.com/ipadd.htm - http://www.ralphb.net/IPSubnet/subnet.html Introduction:- The iTekx company Plc has mainly five departments with the number of Computers. The company has two floors with 100 meters in height and 130 meter of weight. The administration department is the main remote department, and the other departments are Training 1 and 2, multimedia centre and R'n'D department. ...read more.

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