Network Redesign and Solution

This assignment template provides a comprehensive framework for redesigning a network. It covers the identification of an organisation's needs and constraints, including business goals, technical goals, scalability, availability, security, manageability, usability, adaptability, and affordability. The existing network is analyzed, with consideration given to current topology, physical infrastructure, and performance issues. Network traffic analysis is also conducted to determine sources and destinations of network traffic, as well as ensure enough capacity for local and internetworking flows. Logical and physical network redesigns are then proposed, including network topology design, IP addressing scheme design, switching and routing protocols selection, and network management strategies. Finally, the template concludes with a summary and references.

Network Redesign Template*
Overview (one page)
Provide a clear and concise description of the organisation, the business domain, network issues,
and your actions to address these issues including the components of your recommended network
redesign.
Identify Organisation’s Needs and Constraints
Business Goals aimed to meet organisation’s business objectives, and the need to work within
business constraints (two pages).
Technical Goals aimed to support business transactions:
Scalability (half a page)
Availability (half a page)
Network performance (half a page)
Security (half a page)
Manageability (half a page)
Usability (half a page)
Adaptability (half a page)
Affordability (half a page)
Existing Network
Analysis of Existing Network – brief description of current topology, physical infrastructure,
and network’s performance (one page).
Network Maps (WAN and LANs) – Block diagrams of current hosts, interconnecting devices,
and network segments (two pages).
Network Infrastructure Issues – summary of current network-related issues (one page).
Network Traffic Analysis
Traffic Flow – sources and destinations of network traffic. In this section, you consider
current and new network applications and services to determine the flow (two page)
Traffic load – to ensure enough capacity for local and internetworking flows. Take into
account the workstations, servers, time hosts are required to be active, latency, and the like
(two pages)
Protocols and Quality of Service Requirements (one page)
Networks and Information Security Case study - Copyright © Edilson Arenas – CQUniversity
*Template adapted from Oppenheimer, P. (2011). Top-Down Network Design (3rd Edition). Indianapolis, In: Cisco Press.

Logical Network Redesign
Network Topology Design – including detailed views of core, distribution, and access layers (two
pages).
IP Addressing Scheme Design (two pages)
Switching and Routing Protocols selection (two pages)
Network Management Strategies (one page)
Physical Network Redesign
Selection of Technologies and Network Devices for each Campus (LANs)
LAN cabling (one page)
LAN Technologies (one page)
Campus interconnecting Devices (one page)
Selection of Technologies and Devices Campus Wide (WANs)
Remote Access Technologies (one page)
Organisation wide interconnecting Devices (one page)
WAN Technologies (one page)
Physical Network Map (in a single page)
Conclusion
References
Networks and Information Security Case study - Copyright © Edilson Arenas – CQUniversity
*Template adapted from Oppenheimer, P. (2011). Top-Down Network Design (3rd Edition). Indianapolis, In: Cisco Press.