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CCNA4 Exploration:

Accessing the WAN

Guided Case Study

Student:

Date:

Marks:
Overview and Objectives

This final case study allows students to build and configure a complex network using skills gained throughout the course. This case study is not a trivial task. To complete it as outlined with all required documentation will be a significant accomplishment.

The case study scenario describes the project in general terms, and will explain why the network is being built. Following the scenario, the project is broken into a number of phases, each of which has a detailed list of requirements. It is important to read and understand each requirement to make sure that the project is completed accurately.

The following tasks are required to complete the case study:

• Design the network using the diagram and accompanying narrative. • Simulate and test the network using the network simulator tool Packet Tracer.

• Correctly configure single-area OSPF

• Correctly configure VLANs and 802.1q trunking

• Correctly configure Frame Relay

• Correctly configure DHCP

• 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.

Scenario

The regional electrical utility company, South West Electrical, needs a network to be designed and implemented. The company supplies electricity over a wide area. Its headquarters is in Exeter with a call-centre in Plymouth connected via leased line. The Engineering division operates out of Poole whilst the Sales team have a Sales Office in Bournemouth. The Bournemouth and Poole branches are connected to the company’s headquarters in Exeter using Frame Relay because of cost considerations. The company’s networks communicate using the open standard routing protocol OSPF.

The company wants to use private addresses throughout for security reasons and DHCP for the LANs. Access to the Internet is provided from Exeter using network address translation. The company also wishes to limit Internet access to Web traffic while allowing multiple protocols within its own WAN. A set of servers are provided at the company’s headquarters in Exeter although the Engineering division has it own server connected to its own network. Due to the size and complexity, the company wants to create VLANs to control broadcasts, enhance security, and logically group users.

Although private addresses (RFC 1918) will be used, the company appreciates efficiency and address conservation in design. To minimize wasted address space, they have requested VLSM to be used when appropriate.

Requirements
The company has 6 departments / divisions – Personnel, Accounts, Engineering, Sales, Customer Services and IT Support. The offsite sales team are provided with wireless laptops for access to the sales network via the Bournemouth branch. Your design must provide for • 4 employees in the Personnel department.

• 5 employees in the Accounts department.
• 30 employees in the Engineering division at Poole • 50 wired workstations for Customer Services at Plymouth. • 50 laptops for external mobile Sales staff for access via Bournemouth office. • 5 employees (maximum) in IT Support with direct access at Exeter. • Lifetime max...
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