Planning And Implementation Of Advanced Digital Computer Company’s Network

Network Requirements

The Advanced Digital Computer Company is an Australian based company that works as dealer and sellers of the computer and network items, currently the company had expanded to various branches that are situated in different towns.

The company is intending to install a network that will cover all its branches in the country and it had purchased the ipv4 and ipv6 IP addresses as 172.16.16.0/20 and 2001::acad::Bead::/60 in a respective manner ,using the above IP addresses the subnet will be assigned a unique IP address using the IP address scheme for both ipv4 and ipv6 IP address spaces and this will allow the 100% future expansion as the company anticipate to grow.

In the preparation to install the network and gather the requirements below are some of the assumptions that were made.

1. The company will have access to the internet services in all branches.
2. There will be seven LANs network subnets that will be inter-linked together.

• Each network will be having printing devices according to number of computers at a rate of one printer for every seventy computers.

1. The various branches and LANs subnets will be allocated different IP address.
2. There will be six subnets for the all six network branch locations.
3. For every subnet there will be many switches and one router according to hosts number.

• Every computer will be only assigned to one staff member.
• There will be use of copper cable for the local connections in the subnets.

1. For the interconnection between the subnets and head-office the fiber optic cables will be used (Behrouz 2016).
2. The company’s internet services providers will use fiber cables to supply internet to the company.

The advanced digital company network has various requirements to be meeting as the proposed network will be installed which are as follows:

1. Network to support 99% uptime every day.
2. Network bandwidth to be more than 550MHZs.

• Network to have internet connectivity for every subnet.

1. Network to support 340mbps or more download speed.
2. Network to support 250mbps or more upload speed.
3. Network to support the printing of documents over the network printers.

• Network to support 550mbps or more data transmission rates.
• Network to support files sharing and backup.

In the network there will be various connection media that will be used to connect the switches, routers, printers, servers and the computers which will include the copper cables and the fiber cables as summarized in table below indicating their prices for budget preparations (Douglas 2017).

Media type	Bandwidths	Rate of transmitting data	Cost each Meter	Selection Justifications
Copper-CAT5	350MHz per 50-100M	1000-mbps per 50-100M	AUD$0.5	It is used to connect the subnets computers, printers and servers to the access layer switches this media is used due to its low cost, simplicity in installation and easy configuration in the network.
Copper-CAT6	750MHz per 100M	1-10gbps per 100M	AUD$0.7	It is selected to be used for its suitability to connect the distribution layer switches and the subnet routers however it is selected since it is not expensive to buy, it can be installed and configured between devices with ease, it supports a high data transmission rate of 10gbs and it is able to transmit data for about 100 meters without being attenuated.
Fiber-optical -cable	20Ghzs per 3kM	10gbps per 5KMs	AUD$6.1	It was selected for its suitability to transmit data for long distances therefore this media I used to connect the subnets and the main head office ,this media selection was attributed to the high data transmission rate of 10 gbps or higher, offering best uptime, and ability to transfer data over 5 kilometers per second.

The company had purchased the IP address space 172.16.16.0/20 from the internet services providers that will form all the seven subnets of the company network as calculated below (Forouzan 2014).

Head offices branch subnet

In head office a total of three branches are connected where after 100% growth sales subnets will have 120 computers and 2printer, marketing will have 70 computers and 1 printer and the accounts will have 60 computers and 1 printer which in total will add up to 254 hosts.

1. Head office –Sales department

Hosts No = 122

2^y = [122 + 2].

2⁹ = (512> 124)

Networks’ bits = 32 – 9 = 23

Networks’ IP Address = 172.16.18.0/23

Broadcasts IP Address: – 172.16.18.255

Subnets mask =255.255.240.0

Ipv6-mask =128-9=119

1. Head office-marketing department

Hosts No = 71

2^y = [71 + 2].

2⁷ = (128> 73)

Networks’ bits = 32 – 7 = 25

Networks’ IP Address = 172.16.17.0/25

Broadcasts IP Address: – 172.16.17.255

Subnets mask =255.255.240.0

Ipv6-mask =128-7=121

• Head office-accounts department

Hosts No = 61

2^y = [61 + 2].

2⁶ = (64> 63)

Networks’ bits = 32 – 6 = 26

Networks’ IP Address = 172.16.18.0/26

Broadcasts IP Address: – 172.16.18.255

Subnets mask =255.255.240.0

Ipv6-mask =128-6=122

The branch has 104 computers and 2 printers and therefore.

Hosts No = 106

Media Selection

2^y = [106 + 2].

2⁷ = (128> 108)

Networks’ Bits = 32 – 12 = 25

Networks’ IP Address = 172.16.19.0/25

Broadcasts IP Address: – 172.16.19.255

Subnets Mask =255.255.240.0

Ipv6-Mask =128-7=121

The branch has 50 computers and 1 printers and therefore.

Hosts No = 51

2^y = [51 + 2].

2⁶ = (64> 53)

Networks’ bits = 32 – 12 = 26

Networks’ IP Address = 172.16.20.0/26

Broadcasts IP Address: – 172.16.20.255

Subnets mask =255.255.240.0

Ipv6-mask =128-6=122

The branch has 40 computers and 1 printers and therefore.

Hosts No = 41

2^y = [41 + 2].

2¹² = (64> 43)

Networks’ Bits = 32 – 12 = 26

Networks’ IP Address = 172.16.21.0/26

Broadcasts IP Address: – 172.16.21.255

Subnets Mask =255.255.240.0

Ipv6-Mask =128-12=116

The branch has 8 computers and 1 printers and therefore.

Hosts No = 9

2^y = [9 + 2].

2⁴ = (16> 11)

Networks’ Bits = 32 – 12 = 28

Networks’ IP Address = 172.16.22.0/28

Broadcasts IP Address: – 172.16.22.255

Subnets Mask =255.255.240.0

Ipv6-Mask =128-4=124

The branch has 4 computers and 1 printers and therefore.

Hosts No = 5

2^y = [5 + 2].

2³ = (8> 7)

Networks’ Bits = 32 – 12 = 29

Networks’ IP Address = 172.16.23.0/29

Broadcasts IP Address: – 172.16.23.255

Subnets Mask =255.255.240.0

Ipv6-Mask =128-3=125

The branch has 4 servers and therefore.

Hosts No = 4

2^y = [4 + 2].

2³ = (8> 6)

Networks’ Bits = 32 – 12 = 29

Networks’ IP Address = 172.16.24.0/29

Broadcasts IP Address: – 172.16.24.255

Subnets Mask =255.255.240.0

Ipv6-Mask =128-3=125

Subnet-Name	Subnet-Address	Subnet-Mask	Host Range of Address	Broadcast-Address
City head office (Accounts)	172.16.18.0/23	255.255.254.0	172.16.18.1-172.16.18.63	172.16.18.64
City head office (marketing)	172.16.17.0/25	255.255.255.128	172.16.17.1-172.16.17.73	172.16.17.74
City head office (Sales)	172.16.16.0/26	255.255.255.192	172.16.16.1-172.16.16.124	172.16.16.125
Chatswood branch	172.16.19.0/25	255.255.255.128	172.16.19.1-172.16.19.126	172.16.19.127
Leichhart branch	172.16.20.0/26	255.255.255.192	172.16.20.1-172.16.20.62	172.16.20.63
Rockdale branch	172.16.21.0/26	255.255.255.192	172.16.21.1-172.16.21.43	172.16.21.44
Bankstown H.O	172.16.22.0/28	255.255.255.240	172.16.22.1-172.16.22.11	172.16.22.12
Epping H.O	172.16.23.0/29	255.255.255.248	172.16.23.1-172.16.23.7	172.16.23.8
Server Network	172.16.24.0/29	255.255.255.248	172.16.24.1-172.16.24.6	172.16.24.7
Chatswood WAN	172.16.19.0/25	255.255.255.128	172.16.19.1-172.16.19.126	172.16.19.127
Leichhart WAN	172.16.20.0/26	255.255.255.192	172.16.20.1-172.16.20.62	172.16.20.63
Rockdale WAN	172.16.21.0/26	255.255.255.192	172.16.21.1-172.16.21.43	172.16.21.44
Bankstown WAN	172.16.22.0/28	255.255.255.240	172.16.22.1-172.16.22.11	172.16.22.12
Epping WAN	172.16.23.0/29	255.255.255.248	172.16.23.1-172.16.23.7	172.16.23.8

The below table shows the ipv6 addresses using IP address space 2001::ACAD:Bead:/60

Subnet Name	Subnet  Address And Mask	Host Range Of Addresses
City head office (Accounts)	2001:: acad:1001/122	2001:: acad:1001- 2001:: acad:103e
City head office (marketing)	2001:: acad:1100/121	2001:: acad:1101- 2001:: acad:117e
City head office (Sales)	2001:: acad:1200/119	2001:: acad:1201-2001:: acad:13fe
Chatswood branch	2001:: acad:1300/121	2001:: acad:1301- 2001:: acad:13e
Leichhart branch	2001:: acad:1400/122	2001:: acad:1401-2001:: acad:143e
Rockdale branch	2001:: acad:1500/122	2001:: acad:1501-2001:: acad:153e
Bankstown H.O	2001:: acad:1600/124	2001:: acad:1601-2001:: acad:160e
Epping H.O	2001:: acad:1700/125	2001:: acad:1701-2001:: acad:1706
Server Network	2001:: acad:1808/125	2001:: acad:1801-2001::acad:1806
Chatswood WAN	2001::acad:c000/121	2001::acad:c001- 2001::acad:c07e
Leichhart WAN	2001::acad:c100/122	2001::acad:c101-2001::acad:c13e
Rockdale WAN	2001::acad:c200/122	2001::acad:c201-2001::acad:c23e
Bankstown WAN	2001::acad:c300/124	2001::acad:c301-2001::acad:c30e
Epping WAN	2001::acad:c400/125	2001::acad:c401-2001::acad:c406

The ADC network is connected using the routers and switches as in the table below where the switches connect the local network components while the routers connect the LANs to the head office networks.

Network Location	Devices	Models and series	Number required	Ports	Hardware Selection Justifications
Head Offices (Sales, marketing and Accounts)	Routers	Cisco 2621-xm	1	24 Ports	The router is used to connect the network to internet services providers and allow internet access while the switches are used to interconnect the local hardware devices.
Switches	Cisco 2950T-24	16	24 Ports
Chatswood branch	Routers	Cisco 2621-xm	1	24 Ports	The router is required to link network to head offices and allow internet access while the switches are used to connect the local devices and the network router together.
Switches	Cisco 2950T-24	6	24 Ports
Leichhart branch	Router	Cisco 2621-xm	1	24 Ports	The router is required to link network to head offices and allow internet access while the switches are used to connect the local devices and the network router together.
Switch	Cisco 2950T-24	6	24 Ports
Rockdale branch	Router	Cisco 2621-xm	1	24 Ports	The router is required to link network to head offices and allow internet access while the switches are used to connect the local devices and the network router together.
Switch	Cisco 2950T-24	6	24 Ports
Bankstown H.O	Router	Cisco 2621-xm	1	24 Ports	The router is required to link network to head offices and allow internet access while the switches are used to connect the local devices and the network router together.
Switch	Cisco 2950T-24	2	24 Ports
Epping H.O	Router	Cisco 2621-xm	1	24 Ports	The router is required to link network to head offices and allow internet access while the switches are used to connect the local devices and the network router together.
Switch	Cisco 2950T-24	2	24 Ports
Server Network	Router	Cisco 2621-xm	1	24 Ports	In this network the router connects the server LAN to the head office while the switch is used to connect the network servers together.
Switch	Cisco 2950T-24	1	24 Ports

The ADC network infrastructure covers a wide area where all its branches are connected together through the connection medium where each branch has its own network topology.

The network branches are made of only two network topologies which include the hybrid topology and the star topology.

1. Hybrid topology.

This  topology is used in the head office branch where there are three star topologies of the sales, marketing and accounts departments are connected together to form one network.

1. Star topology

However the other branches had adopted the star topology where the various components are linked into a common point using the network switch as indicated here below (Tom 2015).

Fiber-optic cables internet access mode

The company engaged an internet service provider based in Australia to provide the internet service to the entire company branches subnets where they used the fiber cables to supply internet to the company through the point of presence that is in the head office.

The fiber optic cable internet supply is the best type of internet sources since it is able to transmit data with highest rate than any other media however it has other benefits which includes long signals transmission distance, high reliability in supplying the data ,guaranteed 100% uptime ,and ability to overcome any network interferences (William 2014).

Conclusions

This report covers the ADC network that is made of various subnets which are located in different network branches however the subnet IP address plan is worked out where the various subnets are assigned the respective IP addresses in both ipv4 and ipv6 format and also all the network branches topologies are drawn indicating the various devices locations. Therefore the installation of the ADC network will allow the network users to communicate effectively, share information and enable the internet connection easily.

Reference

Andrew, S. (2015) Computer Networks.2^nd edn. New York: Prentice Hall.

Behrouz ,A.(2016) Data Communication and Networking. 4^th edn.New York: McGraw-Hill Education.

Douglas,C.(2017) Internetworking with TCP/IP, Volume1.1^st edn.California: Addison-Wesley Professional.

Forouzan,I.(2014) Computer Networks: A Top – Down Approach.5^th edn.New York: McGraw-Hill.

Tom ,C.(2015) IPv6 Address Planning: Designing an Address Plan for the Future.3^rd edn. San Francisco: O’Reilly Media.

William,S.(2014)  Data and Computer Communication. 2^nd edn. New Delhi: Tata McGraw Hill.