IT Corporate Network System Design and Implementation
Scenario Description: IT company Network:
This module introduces the basic concepts, technologies, architectures and standards involved in computer networks, together with methods for their design and implementation. This will include discussion of data transmission protocols, TCP/IP, LANs and WANS, communication mechanisms and synchronization issues. The scenario is based on the discussion of real-world case studies
You are appointed as a Network engineer in an IT company, you have been assigned to design, implement a network infrastructure for a client company, The Company HQ in London consist of 3 department HR, design and Sales, the company decided to design a new network infrastructure. The network consists of 4 Servers, DHPC, web, DNS and general file server, all servers are shared between all users. You can also use any updated technologies like Cloud services. The distribution of workstation shown in table 1, describe the requirement of each department.
A small branch in Birmingham is established with 10 users only, yet connectivity to the main branch is essential, and required with good networks work fast and smooth, with a plan that comes before it is allowed, you can be assured that your network is running with a consistent high level of performance. It is very much evident in the response time and the degree of reaction times across computers in your network when you can have a good network design plan to begin with.
The IT director emphasised on scalability, redundancy and availability; hence you are required to provide a complete network infrastructure design and implementation, the company will be using private IP address 192.168.168.0/24 for the main branch and private IP address for the branch, the WAN link IP address is of your choice.
Based on requirements given in above scenario;
a. Analyse and examine suitable network model, networking devices and protocols to design a network infrastructure featuring scalability, availability.
b. Used the concept of LAN and WAN in the supposed network design.
c. Your examination should include an analysis of switch and router redundancy protocols and detailed explanation of LAN redundancy concepts, network features, such as bandwidth and load and their related issues.
Due to the fact that the company is distributed across more than one branch and hence a requirement to examine different WAN technologies and select the appropriate one based on scenario given.<>
- Use a network simulator to simulate the network design, with the following requirements: In your design, include at least three Layer 2 switches to simulate Rapid PVST/ spanning tree protocol and analyse different switch redundancy protocols showing the effectiveness in solving redundancy, adding redundant link between all the switches.
- Show how the network can be enhanced further by adding some solution of bandwidth and load balancing solutions, and hence evaluate different implementations of link aggregation using EtherChannel.
- Configure and simulate WAN protocols as to fulfil the requirements of the given scenario, showing some analysis, benefits and drawbacks of private and public WAN technologies including and evaluation of different VPN types based in relation to company needs.
- Finally, network design / implementation is one of first steps in the Lifecyle of network, you are as well to deploy network monitoring tools and troubleshooting methods to establish network baselines and produce network documentation and test and troubleshoot LAN and WAN connectivity issues at different networking layers.
The network topology below satisfy the user requirements above and everything is verified, tested and working fine.
