300575 - Networked Systems Design - Beresford Company Case Study - IT/Computer Science Assignment Help

Assignment Task

Overview and Objectives

In this assignment you will design an enterprise scale network using the skills and knowledge gained in this unit and its prerequisites. This assignment is not a trivial task. To complete it as outlined with all the required documentation will be a significant task.

The assignment scenario describes in general terms, the network that is to be designed. Following the scenario, the assignment is broken into a number of sections (phases), each of these phases has a detailed list of requirements. It is important to read and understand each requirement to make sure that the assignment is completed accurately.

The following tasks are required to complete the assignment:
• Design the network using the diagram and accompanying requirements
• Simulate and test the network using the network simulator tool Cisco Packet Tracer
• Correctly configure single area OSPF protocol
• Correctly configure VLANs and 802.1q trunking
• Correctly configure PPP and PPPoE
• Correctly configure DHCP
• Correctly configure GRE
• Correctly configure NAT and PAT
• Create and apply access control lists on the appropriate routers and interfaces
• Verify that all configurations are operational and functioning according to the scenario guidelines
• Provide documentation and configuration files as detailed in the following sections and phases.

Scenario

Introduction

Beresford is a company that has previous been based in the CBD of Newcastle. Recently, they have opened another site at Maitland which will be used to support a number of engineers. Because the engineers are frequently required at customer sites, they are expected to be working away from the Maitland office much of the time.

The business has grown rapidly; a proof of concept has been created, the infrastructure design has been planned and more engineers have been hired to scale the product. This new model will require a larger location for day-to-day management as well as a number of secure connections between home locations of newly appointed staff.

It is your group’s task to analyse all the requirements and to develop a report that specifies the implementation of the requirements, offering realistic alternatives where possible (Final Report). This report will be used as the basis for the redeveloped structure, as Beresford grows.

Your group will be required to bench test the design to provide a “proof of concept” to ensure your group’s solution will cater to Beresford’s needs. This is an important step because it is essential to understand if the solution will work correctly before committing contractually to delivering this project. Bench testing in this case will be done with software emulation, Packet Tracer.

Requirements

Being a growing company, the initial network topology was just a simple router, switch and internet connection. With the rapid growth generated through hiring developers, Beresford has managed by purchasing additional switches and daisy chained them to create a single flat network.

Business requirements of Beresford:
• Scalable design which will facilitate business expansion.
• Seamless connectivity between their main campus at Newcastle (Newc1, Newc2 and Newc3) and
the newly opened office at Maitland (Mait).
• Secure communication to cloud storage location (reached via ISP).

Beresford’s Internet Service Provider (HunTel) will be providing a WAN solution and will be supplying your group with specific information and partial configuration to assist with bench testing.

Technical consultants have assisted Beresford in translating the above business requirements into the following sections, which contain technical requirements your group needs to incorporate into the solution.

Topology Diagram
When the network design has been finalised a detailed topology diagram is required. The diagram will include but not be limited to the following:
• Internetworking devices and interface details.
• Link networks and IP address information.
• Routing Domains and static route details.
• Switching details and features e.g. STP, Channel Ports, VLAN information.
The topology diagram should be complete enough to allow a third party, for example a network contractor, to install and configure the network without any additional documentation.

Section 6: WAN

For redundancy, an alternate link to ISP is required from Newc2 Router. Because HunTel cannot guarantee that its interface on this link will be provided by a Cisco router, Beresford will have to use PPP with CHAP authentication on this link.

To improve load balancing, this link must be used for those VLANs for which Newc2 is the Active router. Appropriate floating static and default static routing is required for this implementation. The two loopback addresses on ISP will represent cloud storage, and for this exercise, it is sufficient that all internal hosts can successful ping these two loopback addresses using both IPV4 and IPv6 addresses.

To simplify later integration of the Newcastle and Maitland sites, a Virtual Private Network (VPN) is planned. Even though the link between the two sites is a private network, a business requirement dictates the tunnel must be encrypted to ensure sensitive data cannot be intercepted by any means.

Your group will demonstrate VPN technology using a GRE tunnel connecting routers Newc1 and Mait. Thus, addressing this key business requirement, and solving a complex design issue but more importantly instilling confidence through your technical ability.

To provide home user access PPPoE will be implemented. For the demonstration a single PPPoE connection is required. However, the addressing and routing should be designed to allow 10 simultaneous PPPoE connections. (In Figure 1, this functionality can be demonstrated by PCL which is connected to router Cess – representing the potential for a number of PPPoE connections at Cessnock and other areas.)

To provide internet connectivity and public addressing for webservers Network Address Translation (NAT) needs to be configured on the border routers at Newcastle. Public addressing has been leased (see Section 2) and subnetted from the Data Centre’s public address blocks. This address space will be advertised to the Internet by HunTel and traffic redirected back to Beresford’s network via floating static routes.

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