| Assessment Details and Submission Guidelines | |
| Unit Code | MN503 |
| Unit Title | Overview of Internetworking |
| Assessment Title | Network requirement analysis and plan |
| Purpose of the assessment (with ULO Mapping) | This assignment is designed to assess students’ knowledge and skills related to the following learning outcomes:
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| Weight | 10% of the total assessments |
| Total Marks | 50 |
| Word limit | 1200 (approximately 4 pages) |
| Due Date | Week 7, 4 January 2019 11:55 pm - submit a report on Moodle |
| Submission Guidelines | All work must be submitted on Moodle by the due date along with a Title Page. The assignment must be in MS Word format, 1.5 spacing, 11-pt Calibri (Body) font and 2.54 cm margins on all four sides of your page with appropriate section headings. Reference sources must be cited in the text of the report, and listed appropriately at the end in a reference list using IEEE referencing style. |
| Extension |
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| Academic Misconduct |
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Assignment 1 Overview of Internetworking MN503
A case study entitled “Chase Grammar School Accelerates Learning with BYOD” is uploaded with the assignment 1 folder, and the link for the case study is provided as an appendix. Based on the case study, Leo Li, Director for Administrator at the school, is highly concerned with the reliable, high- speed internet connection whether wired or wireless. He thinks that pupils are digital natives and they thrive in the multi-media environment. He further adds that one cannot underestimate the importance of rich and varied contents in the landscape that internet provides.
The case study focusses on the wireless solution and installation of additional wireless access points. As a result, the current throughput rate is recorded as 51 Mbps compared to a patchy 20 Mbps before. All seems good with the Chase Grammar School’s network at the moment. However, there has not been any updates and upgrades on the existing wired infrastructure.
In addition to the wireless infrastructure, you as a network consultant strongly believe that the network experience of the end users at the school could have been further enhanced with the updating and upgrading of the current sluggish wired infrastructure. You tentatively figured out that with the proper upgrade of the wired network the throughput could go up to 90 – 100 Mbps.
Based on your understanding of the case study prepare a report on the proposed wired and wireless network design for Chase Grammar School. The report on the proposed design should have the following contents.
While designing the wired and the wireless network, please consider Chase Grammar School has six departments, namely, Admin, Academic, Human Resource (HR), Finance, IT support and Sports.
Project scope
Based on “Chase Grammar School Accelerates Learning with BYOD” case study information, there is network required to provide with reliable, high-speed internet connection. Administrator director Leo Li has decided to build network using wireless technology. But the connection speed is only up to 50 Mbps. So, there is requirement to build excising network with wired connection, which can enable speed up to 90 – 100 Mbps.
Challenges
The existing network was build with wireless technology [1], so there will a wireless access point to provide network connection. Also, the feasibility of the device will not matter in case of wireless connection. While in case of wired connection, there is requirement to put network switch, which will be used to connect network nodes in the network. So, in place of wireless access point, and based on the need of number of hosts in network there is requirement to provide access of network switch, after that these switch will be connected with backbone switch to provide network connectivity.
User-centric design concept
The mobile user, who has laptop and other smart device, will not be able to access network, if wireless network is removed. So, new network will be required to build with wireless as well as wired technology. Based on the number of ports requirement per system, switch functionality will be decided, because in the market there are switch with 8 ports, 16 ports and 24 ports [2]. Also, based on required security and function, these switches can be manageable or unmanaged.
Project hardware requirements [3]
| Device name | Series | Model | Features & ports |
| Cisco switch | 2900 | 2950 | 24 FE ports, 2 GE ports |
| Cisco switch | 2900 | 2950 | 48 FE ports, 2 GE ports |
| Cisco Router | 2600 | 2621 | 2 FE ports, 1 Serial |
Type of Cable:
For the above requirement, Cat 6 cable is recommended as it is capable of handling traffic of 1 Gbps [4].
Server Name:
Windows Server 2016 is recommended as there is required to provide service like Active directory server. For the physical server dell power edge 620 is recommended. In this physical host, VMware can be installed and multiple server instances can be provided using same physical host [5].
PC configuration [6]:
| Operating system | Windows 10 pro |
| RAM | 4 GB |
| HDD | 500 |
| Process | Minimum core I3 3rd generation |
| Ethernet port | 1 Gbps |
Network design in netsim
Network design for the required network is shown as above, in this diagram there at mainly 3 devices, router, switches, PCs, wireless router. For the simplicity, only few devices are shown in above diagram, but based on the number host these device can be increase. Here, number of ports in switch will be 24 or 48. All the traffic from all available switches will be forwarded to Switch5, so this switch will be work as backbone switch. Every switch has two backbone ports; this backbone port will be connected with backbone switch. The reason of using this backbone switch is the higher speed available only for uplink port [7].
Cat 6 cables will be used for the communication between networking devices. Between Backbone switch and other switch there will be as copper cross over cable. To connect the PC and switch straight through connection will be used. Router and Switch will be connected using same cat 6 cable but the connection of the
As per the given details there are six departments all department has different sets of users. For each department separate VLAN will be created. All the VLAN is available in all switches. Based on user, per department, port for the PC will be assign. For example, VLAN 101 is created for the Admin department, and PC of admin department is connected with port number 3 than this port 3 will be added to VLAN 101 using CLI console of the switch [8].
In all switch, VLAN can be added using global configuration mode, after adding all VLAN port will be configured based on the need. IP address will be provided by the Router, so, route will work as DHCP server for the given network [9]. Based on the department, there are different VLAN, so, IP address will be assigned based on the VLAN address. But before receiving any address from the DHCP server (router), IP address configuration of PC must be set as automatic IP address, if it is set to static IP address assignment than it will not be able to receiving any IP address form the DHCP server.
To share the VLAN traffic from one switch to another switch, Truck port must be set for all switch (switch number 1 to 4), the switch, which is transmitting VLAN traffic will have to set port as trunk which is connected to the backbone switch. If trunk port is not set than switch will not be able to share the VLAN traffic.
In the given network it is possible that there is more wireless network available than provided diagram, here only few devices are shown. Router will be used to restrict traffic flowing from one VLAN to another VLAN. If there is any requirement to exchange data between VLAN, than it will be done using router. This router is named as “Cisco router”. All the traffic form the internet will be passed using this router, so it will work as gateway for the given network.
For providing security to the network, every port must be configured with port security, so that only specified device can able to make communication to the network. For that each port must be configured for the port security manually [10].
Outcomes
With the help of above implementation, all devices which are connected with LAN interface will able to connect with network. Based on the department, router can be used for the implementation of the restriction the network. As the cable used for the given topology is supported up to 1 Gbps, requirement will be accomplished by the implementing the above topology. Wireless AP will be used to connect with switch. As switch is able to provide 100 Mbps network speed, wireless AP can provide as per the need.
Limitations
The above provided work is only limited for the solution of Chase Grammar School. If wireless AP has more number of host, or wireless client, than it is possible that the speed of the other device may be less. For that high end access point will be required.
Conclusion
Network configuration can be done by configuring network switch as per the above requirement. Cisco device router and switch are used for above network, wireless network will work with above network but for that another network segment is required. If approximate number of host is provided that it will be easy to subnet than sub netting plan also provided. Network security is provided in above network by implementing the ACL in router and port security in the switch (manageable).
Demonstration
Ping reply from router (sent from PC1)
As per the above screenshot, there is ping reply coming from the router which has IP address 192.168.1.1
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