Assessment 2

IPv4 Addressing

CSE2NFX Network Engineering Fundamental

Before you begin

Objectives

• To understand IP addressing schemes and subnet addressing.

This is an individual assignment. Students are not permitted to work in a group when writing this assignment.

Copying and Plagiarism

This is an individual assignment. Students are not permitted to work in a group when writing this assignment. Plagiarism is the submission of another person’s work in a manner that gives the impression that the work is their own. La Trobe University treats plagiarism seriously. When detected, penalties are strictly imposed.

Further information can be found on http://www.latrobe.edu.au/students/academicintegrity/explanation/plagiarism

Submission Guidelines

Your assignment submission should be typed, not written/drawn by hand. Submit the electronic copy of your assignment through the subject LMS.

Submission after the deadline will incur a penalty of 5% of the available assignment mark per day capped at 5 days. No assignment will be accepted after 5 days. If you have encountered difficulties that lead to late submission or no submission, you should apply for special consideration.

Background

A multinational company called “Andrew & sons” has 4 branch offices around the world. Each of the branch offices has hundreds of hosts.

This assessment has two parts, Part A and Part B. You must complete both parts.

Part A: Design an IP Addressing scheme for a given scenario.

The company would like to restructure their existing network into a new IP addressing scheme to deploy on their various branches.

This task has been assigned to you by your supervisor. Host requirement for each branch is listed below.

• Branch 1 should accommodate 60 hosts.
• Branch 2 should accommodate 55 hosts.
• Branch 3 should accommodate 40 hosts.
• Branch 4 should accommodate 31 hosts.

You are given 200.168.100.0/24 as the base network address to design the IP subnetting scheme for the company.

Tasks

Design the IP subnetting scheme as per the above-listed requirements.

Task 1: Calculate the subnetting information.

Calculate the followings and complete Table 1.

• Number of subnet bits (borrowed bits) required to accommodate the addressing requirements
  • Total number of subnet
  • The new subnet mask of the IP subnetting scheme
  • Number of remaining host bits
  • Number of hosts per subnet
  • Useable number of hosts per subnet

Number of subnet bits (borrowed bits)
Total number of subnets
New subnet mask (in dotted decimal notation)
Number of remaining host bits
Number of hosts/subnet.
Useable number of hosts/subnet

Table 1

Task 2: Derive subnetwork address

Derive the subnetwork addresses as per the given answers in Task 1 and based on the following conditions. All calculations/methods that you have used to derive the answers should be included as part of your answer. Complete Table 2 with your answers.

• Use 0th subnet for Branch 1 Network.
  • Use 1st subnet for Branch 2 Network.
  • Use 2nd subnet for Branch 3 Network.
  • Use 3rd subnet for Branch 4 Network.

Network names	Subnet numbers	Subnet      Address                 in dotted-decimal notation	New Subnet Mask in dotted-decimal notation
Branch 1 Network	0th Subnet
Branch 2 Network	1st Subnet
Branch 3 Network	2nd Subnet

Branch 4 Network

3rd subnet

Table 2

Task 3:    Calculating the host address ranges

Calculate the host address range and useable host address range of subnetworks derived in Task 2. All calculations/methods that you have used to derive the answers should be included as part of your answer. Complete Table 3 with your answers.

Network names	Subnet numbers	First                   useable address in dotted- decimal notation	Last useable address in dotted- decimal notation	Broadcast address in dotted- decimal notation
Branch 1 Network	0th Subnet
Branch 2 Network	1st Subnet
Branch 3 Network	2nd Subnet
Branch 4 Network	3rd subnet

Part B: Re-design an IP addressing scheme as per changed requirements.

During the next five years, there were two other companies acquired by “Andrew & Sons.” Moreover, the company experienced immense growth in production, the number of branches, and the number of employees.

Altogether there are 10 branches now.

Host requirement for each branch is as follows.

• Branch 1 should accommodate 2050 hosts.
• Branch 2 should accommodate 2100 hosts.
• Branch 3 should accommodate 4094 hosts.
• Branch 4 should accommodate 1030 hosts.
• Branch 5 should accommodate 950 hosts.
• Branch 6 should accommodate 4092 hosts.
• Branch 7 should accommodate 2049 hosts.
• Branch 8 should accommodate 1025 hosts.
• Branch 9 should accommodate 4094 hosts.
• Branch 10 should accommodate 900 hosts.

The company would like to re-design their IP addressing scheme to facilitate this new requirement. This task has been assigned to you by your supervisor.

You are given 170.168.0.0/16 as the base network address to design the IP subnetting scheme for the company.

Tasks

Design the IP subnetting scheme as per the above-listed requirements.

Task 1: Calculate the subnetting information.

Calculate followings. All calculations/methods that you have used to derive the answers should be included as part of your answer — complete Table 1 with your answers.

• Number of subnet bits (borrowed bits) required to accommodate the addressing requirements
  • Total number of subnets
  • The new subnet mask of the IP subnetting scheme
  • Number of remaining host bits.
  • Number of hosts per subnet.
  • Useable number of hosts per subnet

Number of subnet bits (borrowed bits)
Total number of subnets
New subnet mask (in dotted decimal notation)
Number of remaining host bits
Number of hosts/subnet.
Useable number of hosts/subnet

Table 1

Task 2: Derive subnetwork address

Derive the subnetwork addresses as per the given in Task 1 and based on the following conditions. All calculations/methods that you have used to derive the answers should be included as part of your answer.

Complete Table 2 with your answers

• Use 0th subnet for Branch 1 Network.
  • Use 1st subnet for Branch 2 Network.
  • Use 2nd subnet for Branch 3 Network.
  • Use 3rd subnet for Branch 4 Network.
  • Use 4th subnet for Branch 5 Network.
  • Use 5th subnet for Branch 6 Network.
  • Use 6th subnet for Branch 7 Network.
  • Use 7th subnet for Branch 8 Network.
  • Use 8th subnet for Branch 9 Network.
  • Use 9thsubnet for Branch 10 Network.

Network names	Subnet numbers	Subnet      Address                 in dotted-decimal notation	New Subnet Mask in dotted-decimal notation
Branch 1 Network	0th Subnet
Branch 2 Network	1st Subnet
Branch 3 Network	2nd Subnet
Branch 4 Network	3rd subnet
Branch 5 Network	4th subnet
Branch 6 Network	5th subnet
Branch 7 Network	6th subnet
Branch 8 Network	7th subnet
Branch 9 Network	8th subnet
Branch 10 Network	9th subnet

Table 2

Task 3:    Calculating the host address ranges

Calculate the host address range and useable host address range of subnetworks derived in Task 2. All calculations/methods that you have used to derive the answers should be included as part of your answer.

Complete Table 3 with your answers.

Network names	Subnet numbers	First                 useable address in dotted- decimal notation	Last                 useable address in dotted- decimal notation	Broadcast address in dotted- decimal notation
Branch Network	1	0th Subnet
Branch Network	2	1st Subnet
Branch Network	3	2nd Subnet
Branch Network	4	3rd subnet
Branch Network	5	4th subnet
Branch Network	6	5th subnet
Branch Network	7	6th subnet
Branch Network	8	7th subnet
Branch Network	9	8th subnet
Branch Network	10	9th subnet

Table 3

Submitting your assessment

When you have completed the tasks for both Part A and Part B, submit the assessment on the LP. You should submit the following:

• Submit your answers in a single word document called xxx_cse2nfx_Assessment 2.docx (where xxx is your student number).

Assessment Marking Criteria

Criteria	Marks
Part A: Design an IP Addressing scheme for a given scenario.
Task 1: Calculate the subnetting information.
All calculations are shown	4
Table 1 is completed correctly	12
	= 16
Task 2: Derive subnetwork address
Given address used	2
All calculations are shown	4
Table 2 is completed correctly	16
	= 22
Task 3: Calculating the host address ranges
All calculations are shown.	4
Table 3 is completed correctly	24
	= 28

Part B: Re-design an IP addressing scheme as per changed requirements.
Task 1: Calculate the subnetting information.
All calculations are shown.	4
Table 1 is completed correctly	12
	= 16
Task 2: Derive subnetwork address
Given address used for calculations	2
All calculations are shown.	4
Table 2 is completed correctly	40
	= 46
Task 3: Calculating the host address ranges
All calculations are shown.	4
Table 3 is completed correctly	60
	=64
Total	= (16+22+28) + (16+46+64)   = 192

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