Redesign The Network Technology Computer Science Essay

Published Date: 02 Nov 2017

WARNING: This Essay Has No Title!

centred

Faculty of Computing, Engineering and Technology

MSc in Computer Networks and Security

Network Concepts

Module Tutor

Prof. Mohammad S. Hasan and Tomasz Bosakowski

Submission Date - 21st January 2013

Submitted By:

Sunil Kumar Kotturi

K001531C

Contents

Title page 01

Contents 02

Abstract 03

Introduction 04

Calculation of Subnets 05

Dispatch Department subnet 05

Order Processing Department subnet 07

Administration Department subnet 08

Router IP Address 08

Network Topology( Re- design) 09

3.1 Configuration 10

Price’s of Hardware 10

Single mode Optical Fiber 11

5.1 Advantages 12

5.2 Disadvantages 12

References 12

ABSTRACT

Redesign the network technology in small company to develop fast and secured network in the organization. Assigning IP address using VLSM to the interfaces in the network. The prices and specifications of hardware used in this network and in future purpose of company requirements.

Introduction:

In the given network topology of a small company is having some difficulties in communication. To resolve this difficulties, I redesign the network with new ip address (company is using the address of 156.167.0.0 / 16 ) by using VLSM and all the interfaces with its ip address mentioned in Table:2In this network using single mode fiber optic cable to transmit the data very faster and no loss of data packet. It is expensive but using this the communication between networks is speed up the process. Using switches instead of hubs which is used in old network Fig:01.

Fig:01

(Source: Case Study)

Calculation of Subnets:

For company requirement it contains three departments in each department There is some number of devices which mentioned in Table:01

Department

Number of devices

IP addresses

Administration

L = 15

IP 1, IP 2, … IP 15

Order Processing

M = 25

IP 1, IP 2, …, IP 25

Dispatch

N = 50

IP 1, IP 2, …, IP 50

Table 1: Company's PC requirement.

In calculating subnet it starts from subnet which is having high number of devices(hosts) required. From Table:01 first Dispatch department having highest no of devices(hosts) required and then Order Processing department and last Administration department. Company using ip address:156.167.0.0/16.

2.1 Dispatch Department subnet:

Network Address:156.167.0.0/26

Required hosts: 50

128

64

32

16

8

4

2

1

0

0

1

1

1

1

1

1

26 –2 =64-2 (-2 is for Network ID & Broadcast ID)

62 hosts + Network ID & Broadcast ID

Network Address or ID

First IP Address

Default Gate way

Broadcast Address

Network Mask

Server 1

156.167.0.1

156.167.0.62

156.167.0.63

255.255.255.192

Server 2

156.167.0.2

156.167.0.62

156.167.0.63

255.255.255.192

PC 1

156.167.0.3

156.167.0.62

156.167.0.63

255.255.255.192

PC 2

156.167.0.4

156.167.0.62

156.167.0.63

255.255.255.192

PC 3

156.167.0.5

156.167.0.62

156.167.0.63

255.255.255.192

PC 4

156.167.0.6

156.167.0.62

156.167.0.63

255.255.255.192

PC 5

156.167.0.7

156.167.0.62

156.167.0.63

255.255.255.192

PC 6

156.167.0.8

156.167.0.62

156.167.0.63

255.255.255.192

PC 7

156.167.0.9

156.167.0.62

156.167.0.63

255.255.255.192

PC 8

156.167.0.10

156.167.0.62

156.167.0.63

255.255.255.192

PC 9

156.167.0.11

156.167.0.62

156.167.0.63

255.255.255.192

PC 10

156.167.0.12

156.167.0.62

156.167.0.63

255.255.255.192

PC 11

156.167.0.13

156.167.0.62

156.167.0.63

255.255.255.192

PC 12

156.167.0.14

156.167.0.62

156.167.0.63

255.255.255.192

PC 13

156.167.0.15

156.167.0.62

156.167.0.63

255.255.255.192

PC 14

156.167.0.16

156.167.0.62

156.167.0.63

255.255.255.192

PC 15

156.167.0.17

156.167.0.62

156.167.0.63

255.255.255.192

PC 16

156.167.0.18

156.167.0.62

156.167.0.63

255.255.255.192

PC 17

156.167.0.19

156.167.0.62

156.167.0.63

255.255.255.192

PC 18

156.167.0.20

156.167.0.62

156.167.0.63

255.255.255.192

PC 19

156.167.0.21

156.167.0.62

156.167.0.63

255.255.255.192

PC 20

156.167.0.22

156.167.0.62

156.167.0.63

255.255.255.192

PC 21

156.167.0.23

156.167.0.62

156.167.0.63

255.255.255.192

PC 22

156.167.0.24

156.167.0.62

156.167.0.63

255.255.255.192

PC 23

156.167.0.25

156.167.0.62

156.167.0.63

255.255.255.192

PC 24

156.167.0.26

156.167.0.62

156.167.0.63

255.255.255.192

PC 25

156.167.0.27

156.167.0.62

156.167.0.63

255.255.255.192

PC 26

156.167.0.28

156.167.0.62

156.167.0.63

255.255.255.192

PC 27

156.167.0.29

156.167.0.62

156.167.0.63

255.255.255.192

PC 28

156.167.0.30

156.167.0.62

156.167.0.63

255.255.255.192

PC 29

156.167.0.31

156.167.0.62

156.167.0.63

255.255.255.192

PC 30

156.167.0.32

156.167.0.62

156.167.0.63

255.255.255.192

PC 31

156.167.0.33

156.167.0.62

156.167.0.63

255.255.255.192

PC 32

156.167.0.34

156.167.0.62

156.167.0.63

255.255.255.192

PC 33

156.167.0.35

156.167.0.62

156.167.0.63

255.255.255.192

PC 34

156.167.0.36

156.167.0.62

156.167.0.63

255.255.255.192

PC 35

156.167.0.37

156.167.0.62

156.167.0.63

255.255.255.192

PC 36

156.167.0.38

156.167.0.62

156.167.0.63

255.255.255.192

PC 37

156.167.0.39

156.167.0.62

156.167.0.63

255.255.255.192

PC 38

156.167.0.40

156.167.0.62

156.167.0.63

255.255.255.192

PC 39

156.167.0.41

156.167.0.62

156.167.0.63

255.255.255.192

PC 40

156.167.0.42

156.167.0.62

156.167.0.63

255.255.255.192

PC 41

156.167.0.43

156.167.0.62

156.167.0.63

255.255.255.192

PC 42

156.167.0.44

156.167.0.62

156.167.0.63

255.255.255.192

PC 43

156.167.0.45

156.167.0.62

156.167.0.63

255.255.255.192

PC 44

156.167.0.46

156.167.0.62

156.167.0.63

255.255.255.192

PC 45

156.167.0.47

156.167.0.62

156.167.0.63

255.255.255.192

PC 46

156.167.0.48

156.167.0.62

156.167.0.63

255.255.255.192

PC 47

156.167.0.49

156.167.0.62

156.167.0.63

255.255.255.192

Printer

156.167.0.50

156.167.0.62

156.167.0.63

255.255.255.192

2.2 Order Processing Department subnet:

Network Address:156.167.0.64/27

Required hosts: 25

128

64

32

16

8

4

2

1

0

0

0

1

1

1

1

1

25 –2 =32-2 (-2 is for Network ID & Broadcast ID)

30 hosts + Network ID & Broadcast ID

Network Address or ID

First IP Address

Default Gate way

Broadcast Address

Network Mask

Printer

156.167.0.65

156.167.0.94

156.167.0.95

255.255.255.224

Server

156.167.0.66

156.167.0.94

156.167.0.95

255.255.255.224

PC 1

156.167.0.67

156.167.0.94

156.167.0.95

255.255.255.224

PC 2

156.167.0.68

156.167.0.94

156.167.0.95

255.255.255.224

PC 3

156.167.0.69

156.167.0.94

156.167.0.95

255.255.255.224

PC 4

156.167.0.70

156.167.0.94

156.167.0.95

255.255.255.224

PC 5

156.167.0.71

156.167.0.94

156.167.0.95

255.255.255.224

PC 6

156.167.0.72

156.167.0.94

156.167.0.95

255.255.255.224

PC 7

156.167.0.73

156.167.0.94

156.167.0.95

255.255.255.224

PC 8

156.167.0.74

156.167.0.94

156.167.0.95

255.255.255.224

PC 9

156.167.0.75

156.167.0.94

156.167.0.95

255.255.255.224

PC 10

156.167.0.76

156.167.0.94

156.167.0.95

255.255.255.224

PC 11

156.167.0.77

156.167.0.94

156.167.0.95

255.255.255.224

PC 12

156.167.0.78

156.167.0.94

156.167.0.95

255.255.255.224

PC 13

156.167.0.79

156.167.0.94

156.167.0.95

255.255.255.224

PC 14

156.167.0.80

156.167.0.94

156.167.0.95

255.255.255.224

PC 15

156.167.0.81

156.167.0.94

156.167.0.95

255.255.255.224

PC 16

156.167.0.82

156.167.0.94

156.167.0.95

255.255.255.224

PC 17

156.167.0.83

156.167.0.94

156.167.0.95

255.255.255.224

PC 18

156.167.0.84

156.167.0.94

156.167.0.95

255.255.255.224

PC 19

156.167.0.85

156.167.0.94

156.167.0.95

255.255.255.224

PC 20

156.167.0.86

156.167.0.94

156.167.0.95

255.255.255.224

PC 21

156.167.0.87

156.167.0.94

156.167.0.95

255.255.255.224

PC 22

156.167.0.88

156.167.0.94

156.167.0.95

255.255.255.224

PC 23

156.167.0.89

156.167.0.94

156.167.0.95

255.255.255.224

2.3 Administration Department subnet:

Network Address:156.167.0.96/27

Required hosts: 15

128

64

32

16

8

4

2

1

0

0

0

1

1

1

1

1

25 –2 =32-2 (-2 is for Network ID & Broadcast ID)

30 hosts + Network ID & Broadcast ID

Network Address or ID

First IP Address

Default Gate way

Broadcast Address

Network Mask

Printer

156.167.0.97

156.167.0.126

156.167.0.127

255.255.255.224

Server

156.167.0.98

156.167.0.126

156.167.0.127

255.255.255.224

PC1

156.167.0.99

156.167.0.126

156.167.0.127

255.255.255.224

PC2

156.167.0.100

156.167.0.126

156.167.0.127

255.255.255.224

PC3

156.167.0.101

156.167.0.126

156.167.0.127

255.255.255.224

PC4

156.167.0.102

156.167.0.126

156.167.0.127

255.255.255.224

PC5

156.167.0.103

156.167.0.126

156.167.0.127

255.255.255.224

PC6

156.167.0.104

156.167.0.126

156.167.0.127

255.255.255.224

PC7

156.167.0.105

156.167.0.126

156.167.0.127

255.255.255.224

PC8

156.167.0.106

156.167.0.126

156.167.0.127

255.255.255.224

PC9

156.167.0.107

156.167.0.126

156.167.0.127

255.255.255.224

PC10

156.167.0.108

156.167.0.126

156.167.0.127

255.255.255.224

PC11

156.167.0.109

156.167.0.126

156.167.0.127

255.255.255.224

PC12

156.167.0.110

156.167.0.126

156.167.0.127

255.255.255.224

PC13

156.167.0.111

156.167.0.126

156.167.0.127

255.255.255.224

IP Address for Router Interface:

Network Address:156.167.0.128/30

Required hosts: 2

128

64

32

16

8

4

2

1

0

0

0

0

0

0

1

1

22 –2 =4-2 (-2 is for Network ID & Broadcast ID)

2 hosts + Network ID & Broadcast ID

Network address or ID

First IP address

Last IP address

Broadcast address

Network Mask used

156.167.0.0

156.167.0.1

156.167.0.62

156.167.0.64

255.255.255.192

156.167.0.64

156.167.0.65

156.167.0.94

156.167.0.95

255.255.255.224

156.167.0.96

156.167.0.97

156.167.0.126

156.167.0.127

255.255.255.224

Router(156.167.0.128)

156.167.0.129

NA

NA

255.255.255.252

Table 2: VLSM design of the proposed network topology.

Network Topology (Re-Design):

The new re-design network as show in Fig: 02 it consists of Router and switches.

Order Processing Administration Dispatch

Fig: 02

(Source: Packet Tracer)

In this above network for every subnet having one switch which are configured in VLAN and the switch in administration make it as VTP Server and other are Client and the router is used for better communication in the network.

3.1 Configuration:

Configure all the devices with IP Address as show in Table: 02 and then configure the switches for VLAN and VTP Server. Make Order Processing as VLAN 10 and Administration as VLAN 99 and Dispatch as VLAN 20 and then VLAN 99 make it as VTP Server. In Configuration method make all domain names and password for all switches same at their interfaces respectively.

Configure the router with the IP address at the Fast Ethernet port interface.

The default gateways for the VLANs 10, 20 and 99 are 156.167.0.62, 156.167.0.94 and 156.167.0.126 respectively.

Configure the trunks and access ports for Order Processing and Dispatch switches.

Configure one sub-interface for each VLAN and assign the default gateway IP address to it.

Configure the sub-interface fa0/0.10 with the IP address 156.167.0.62/26

Configure the sub-interface fa0/0.20 with the IP address 156.167.0.94/27

Configure the sub-interface fa0/0.99 with the IP address 156.167.0.126/27

Check the interface status in router and trunk status at VTP server.

Price’s of Hardware:

Router—1Pcs

CISCO1841 £373.87

Switches

WS-C2960-24PTT-L--2pcs £660.98

(Single £330.49)

WS-C2960-48PST-S--2pcs £1975.28

(Single £987.64)

Single Mode Fiber Optic 20mts—2pcs

20m LC-LC Duplex 8.3/125um single mode patch cord £85.76

(Single £42.88)

Adapter Plate –2pcs

616DLC LC Adapter Plate £65.72

(Single £32.86)

Total: £3161.45

(Source: http://www.router-switch.com and http://www.industrialnetworking.com)

Single Mode Fiber optic communication:

Single mode optical fiber it also called as mono mode optical fiber, Single mode optical wave guide or Uni-mode optical fiber.

Fig:03

(Source: http://www.multicominc.com/active/manufacturer/multicom/Fiber Optics/singlemode-ultimode.html)

Single mode fiber optic cable having a small core and cladding diameter (9/125 microns). It means that the ratio between core and cladding diameter is 9 microns to 125 microns.http://www.infinitecables.com/images/fiber%20cable%20diag.jpg

It allows only one ray or signal( in mode of light) to travel .The number of light reflections decreases when the light passes through the core, lesser attenuation

and creating the capability to the signal to travel faster, further. It used for higher capacity Bandwidth to transmit information because it can hold the Charge of Fig: 04

each light pulse throughout the longer distances. This System (technology) is mainly used by Colleges and Universities and Telco’s, CATV companies. The acceptable transmission range is up to 3km.

fiber optic cable fiber optic cable

Fig: 05

(Source: http://www.voscom.com/trainning/fiber-optic-cable.asp)

By using this communcation system in network it helps to transmit the data between one network to another netwrok very fastly and little integrity loss.

5.1 Single Mode Fiber optic communication Advantages:

It doesn’t have modal dispersion & noise, and other effects while transmission.

It transmit signals at higher speeds.

It is best option for long distance length (or) high data rates.

Capable of transmitting data throughout the distance with little integrity loss.

Telecommunications which use laser diode based fiber optic transmission equipment.

5.2 Single Mode Fiber optic communication Disadvantages:

Coupling light into single mode fiber requires much tighter tolerances.

Components and equipments of Single mode fiber are more expensive.