Critical understanding of the top network model

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Reference no: EM133058299

COMP1609 Network and Internet Technology and Design - University of Greenwich

Learning Outcome 1: Demonstrate knowledge of network communication, OSI and TCP/IP model.

Learning Outcome 2: Demonstrate a critical understanding of the top network model with related key protocols, services, and applications.

Learning Outcome 3: Evaluate common network problems (malfunction, poor performance), adopt a systematic approach to troubleshooting and resolving the problem.

Learning Outcome 4: Be competent in the use of tools designed to analyse and simulate network functionality.

The objective of the coursework is to simulate a client-server model communication over an IP network and to investigate an application and network performance in multiple provided scenarios.

This assessment requires to use RIVERBED simulator.

The network architecture overview:
A company's headquarters are in Manchester, UK. They have recently opened regional offices in Chicago, USA and Sydney, Australia. The main service provided by the Chicago and Sydney offices will be gathered and distributed monthly and annual reports describing sales handled by the headquarters in Manchester, UK. The company has decided to perform a simulation in case if they will expand with an additional call centre.

Manchester HQ LAN: The network is undefined and needs to be designed by the student with justifications, this implies justification of several nodes, user profiles and application profiles.

Chicago office LAN: It consists of 35 users connected to 100baseT switch, Local printer, Email (heavy). They are connected to the Internet via a T1 line. Some applications run by users including printer and database (heavy) are local and others like web browsing (light-HTTP) and FTP (heavy) are supported remotely, in Manchester, UK. Additionally, 8 users run an online video conferencing application with all supported services.

Sydney Office LAN: It consists of 25 users connected to 10baseT switch, Local printer, Email (heavy). They are connected to the Internet via a T1 line. Some applications run by users including printer (light) and database (heavy) are local and others like web browsing (heavy-HTTP) and FTP (light) are supported remotely, in Manchester, UK. Additionally, 8 users run online voice and video conferencing applications.

Call centre Office LAN: It would consist of 15 users connected to 100baseT switch, Local printer, Email (light). They are connected to the Internet via a T1 line. Some applications run by users including printer (light) and database (light) are local and others like web browsing (heavy-HTTP) and FTP (light) are supported remotely, in Manchester, UK. All users run online voice and video conferencing applications with Sydney Office.

The objective is to perform group literature research and individually build a Riverbed simulation model based on the network architecture given and evaluate the behaviour of network parameters gained by simulating the use cases. The design, implementation and simulation discussion imply the inclusion of graphs and justification of made decisions or the results achieved through the simulation.

1. Perform literature research on the technologies that used in modern enterprise networks. These technologies are Distributed Denial of Service Protection, Load Balancing and Cloud Virtualization. There are multiple providers of such services, some examples, Amazon AWS, CloudFlare and Akamai Technologies. Critically discuss these technologies concerning the scalability and transparency of communication, providing examples. Identify two or more commercial risks arising due to the failure of such cloud services. The discussion should be documented and should be approximately 700 words. The group should consist of two roles: risk assessor and upgrade engineer. The upgrade engineer must review the technologies from a benefit point of view, whilst the risk assessor evaluates the potential threats. [GROUP TASK]

2. Design, implement and simulate your model in the RIVERBED simulator guided by the given network architecture overview. The design requires detailed documentation on the application and performance settings in the RIVERBED simulator for each user and these settings justifications. Following the implementation, you are required to simulate your scenario for 20 minutes. [INDIVIDUAL TASK]

3. The documentation must contain subnetting schemes for each LAN. Note: You are NOT required to configure Riverbed to use subnets. You must provide the following: Network Address, Broadcast Address, Usable Addresses, and IP Address assignments to hosts. You must use at least two classes from Private Address Space.

4. Investigate the behaviour of the network performance in a variety of cases. The analysis must be done regarding your expectations. Discuss the scenario and hypothesize on the possible outcomes of provided use-cases followed by the analysis of the results that were received from the simulation. [INDIVIDUAL TASK]

5. You must review the following:
i. Utilization of a T1 link.
ii. Average FTP download response time
iii. HTTP page response time.
iv. The behaviour of voice and video applications
v. Ethernet delay
vi. Simulate the following use-case: The new call centre office will communicate with Chicago and Sydney offices. It is planned that 10 users will communicate with the Sydney office and 5 users will communicate with the Chicago office. All offices will communicate via the video-conferencing application. Investigate the behaviour of the video-conferencing application.
vii. Evaluate the network performance in a use-case, where you would introduce at least one of the improvements that you have identified.

Perform the analysis of the results starting from the first minute. This should be done, to reduce the noise from the data caused by the initialization of network devices such as routers and switches which may have an impact on your investigation.

A good structure report, which must include the following:

• A literature review on the technologies that are used in a provided network architecture and the benefits of usage of cloud services. Refer to Task 1.
• Description of the designed and implemented scenarios, including the justifications for the design and choice of performance parameters. Refer to Task 2.
• Documentation on the investigation of required features and use-cases, including graphs and analysis of the results of the simulation. Refer to Task 3 and its subcategories.
• Based on the results; recommend your choice of consideration to improve the network model.
• A critical reflection, which is evaluative and reflective.

Attachment:- Network and Internet Technology and Design.rar

Reference no: EM133058299

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