Data Communication IT
ASSIGNMENT-3 DATA COMMUNICATIONS AND NETWORKS
The steps below might assist you to understand what is expected in Assignment 3. This is a typical situation that you would find yourself in if you are in the IT industry. It is called a system upgrade. The requirements step is critical to your design. If you do not understand what the client wants in terms of security, performance the client will not be happy and will not pay you.
Client specification (from Assignment 3)
Before –you are given the diagram above
The company has expanded, and it has decided to redevelop its HQ’s existing LAN (see the above diagram) to achieve the company’s following business and technical goals.
Client wants the following
The Business goals: Improved communications, wireless, VoIP, etc. Protect company information
Technical goals: • Scalability – company plans to increase employee by 15% in next 12 months; • Remote Access- employees have access to company resources from both company and home (different servers); • Performance – network performance must be high • Security – protection of company information and other IT assets • Flexibility- network should be flexible enough to create logical grouping as required. • Availability – wireless network access is available in all employees as well as some outdoor areas for software developers and employees
You are free to make as many assumptions you wish regarding the existing organizational structure including management hierarchy, business requirement, etc. which will need to be documented in the appropriate sections of your report. You are contracted by the company to help with the network redevelopment.
Your task in this assignment is to propose and document
Requirement engineering (The analysis of user requirements for the company HQ’s local area network (LAN))
A logical design for the HQ LAN
An IP address plan for the HQ LAN according to the proposed design
Network diagrams
Marking rubric
Demonstrates full understanding of network needs through a comprehensive analysis of all of the following elements:
• Performance requirements
• Security requirements
• Remote access requirement
• Mobility requirements
• Bandwidth requirement
Quality of Service (QoS) requirement
VoIP Service requirement
After – you make the diagram below
Performance – network performance must be high we used L3 switches as ….
We expect to see No single point of Failure (SPoF) for critical system
Security requirements – Protect company information plus protection of company information and other IT assets
We expect to see DMZ (see page 310 textbook), firewalls, security policy
Remote access Remote Access- employees have access to company resources from both company and home (different servers)
We expect to see wireless and different servers for each section . The company HQ has 6 departments: Software Development, Solution Design, Customer Support, Sales, Finance and Human Resource detailed as follow: see assignment
We expect to see secure solution for remote access =VPN
Mobility Availability – wireless network access is available in all employees as well as some outdoor areas for software developers and employees
Bandwidth requirement
Quality of Service see Mediasite recording
VoIP Service Improved communications, wireless, VoIP,
VoIP Service and Quality of Service see video: VLAN solution
Critical thinking question.
Did we miss any client requirements? What about scalability? Campus design. Where would we expect to see this design in the marking rubric?