Microsoft Word XXXXXXXXXX2020S1_Assignment.docx Autumn XXXXXXXXXXNetworked Systems Design 1 300575 Networked Systems Design: Network Design Assignment 2020S1 DUE DATE: Friday 5 June 2020 by 17:00...

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Microsoft Word - 300575-2020S1_Assignment.docx Autumn 2020 300575 Networked Systems Design 1 300575 Networked Systems Design: Network Design Assignment 2020S1 DUE DATE: Friday 5 June 2020 by 17:00 (Submission via vUWS) Autumn 2020 300575 Networked Systems Design 2 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 (v7.2.1) • 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. Autumn 2020 300575 Networked Systems Design 3 Scenario Introduction MegaCon is a company based in the Campbelltown area. Recently, they have opened another site at Parramatta 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 Parramatta 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 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 a redeveloped network as MegaCon grows. Your will be required to bench test the design to provide a “proof of concept” to ensure your solution will cater to MegaCon’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 Cisco's software emulation package, Packet Tracer Version 7.2.1. 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, MegaCon has managed by purchasing additional switches and daisy chaining them to create a single flat network. MegaCon's Network Requirements Scalable design which will facilitate business expansion. Seamless connectivity between their main campus at Campbelltown (Cam1, Cam2 and Cam3) and the newly opened office at Parramatta (Par). Secure communication to cloud storage location (reached via ISP). MegaCon’s Internet Service Provider (In-Tel) 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 MegaCon in translating the above network requirements into the following sections, which contain technical requirements you need to incorporate into the solution. Autumn 2020 300575 Networked Systems Design 4 Section 1: Basic Network Figure 1: Basic network diagram (proposed topology) Basic Configuration Requirements • Configure device names as shown in the topology. • Disable DNS lookup. • Disable HTTP on all routers and switches. • Enable SSH on all router and switches. Use the device name as the username and cisco as the password on all devices. • Configure logging synchronous for the console and VTY lines. • Configure a MOTD banner to warn users that unauthorized access is prohibited. • Device Security o Encrypt the plain text passwords. o Assign class as the privileged EXEC mode secret password. o Assign cisco as the console and VTY passwords for login. • For testing purposes MegaCon advises their WAN provider, In-Tel, has set clock rate for all external WAN serial links to 128000 kbps. • Configure the IPv4 and IPv6 addresses as listed in the Addressing Table. ISP Cam1 Cam2 Cam3 Par NMPC Liv PSW SwB SwM PCP SPC LPC SwT Autumn 2020 300575 Networked Systems Design 5 Topology Diagrams When your network design has been finalised you will be required to provide an accurate and detailed logical and physical topology diagram. The logical diagram should accurately reflect the implemented addressing scheme. The physical diagram should 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 physical 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 2: Network Addressing IP Address Scheme MegaCon will be using the following addressing schemes: Address Type Address Owner IPv4 Private Address Allocation 10.100.0.0/19 MegaCon IPv6 Address Allocation 2001:1:10::/52 MegaCon IPv4 Public Address Allocation 200.200.0.0/28 Must be allocated across Cam1 and Cam2 IPv4 ISP Point-to-point Cam1 link 90.1.1.0/30 ISP IPv6 ISP Point-to-point Cam1 link 2001:60:1:1::/64 ISP IPv4 ISP Point-to-point Cam2link 90.1.2.0/30 ISP IPv6 ISP Point-to-point Cam2link 2001:60:1:2::/64 ISP ISP Lo1 for IPv4 5.5.5.5/32 ISP ISP Lo1 for IPv6 2001:5.5.5.5::5/128 ISP ISP Lo2 for IPv4 6.6.6.6/32 ISP ISP Lo2 for IPv6 2001:6:6:6::6/128 ISP Table 2: IP address block allocations A data centre provider has been asked to lease some of their public address space for MegaCon’s data centre infrastructure. In-Tel will provide an internet tail (link) through serial connections to Cam1 and Cam2 and advertise this address space to the Internet. To achieve this there will be a static route implemented using the point-to-point link public address space provided in Table 2. Network Specifics • All routers, switches and PCs are dual stack devices. • OSPF router ID will come from the private IPv4 internal addressing. • PPPoE links between all users on Eng networks and Par will come from internal addressing. Allocate address space and consider how this can be routed within the network. • Ensure route aggregation has been built in to the addressing scheme for scalability. • Gateway addresses will be assigned the first usable address in each subnet for both IPv4/6. • Router interfaces for IPv6 will use static link-local addressing (keeping the addressing simple). • MegaCon’s network manager PC (NMPC) is physically connected to the switch SwM. NMPC uses the last address on the Management VLAN. Host Requirements Campbelltown will use IPv6 addresses which are dynamically assigned through SLAAC. VLAN Information VLSM is NOT required. An industry standard of /24 addressing for internal IP scheme is desirable. However, when that is not feasible, larger networks may be used. Autumn 2020 300575 Networked Systems Design 6 Site VLANs Required Cam1, Cam2 and Cam3 Accounting/Marketing/Sales/Office Par Parra Office / Engineering Both sites Native / Management / Blackhole Table 3: VLAN Information List NOTE Network addressing scheme should take into account route summarisation. Addressing Requirements VLAN Host Requirements Growth Accounting 50 Hosts Yes Marketing 75 Hosts Yes Sales 150 Hosts Yes Office 200 Hosts Yes Management 5 Hosts (per site) No Parra Office 40 Hosts Yes Engineering 20 Hosts Yes Table 4: Current Host Addressing Requirements MegaCon expects that it will have to provision for doubling of the sizes of most of its VLANs over the next two years. Section 3: Network Switches MegaCon is moving away from their ad-hoc switch design to a more hierarchical and scalable design. The deployment of the following technologies should “future proof” the business for further expansion as required. VLAN Requirements Switch access ports allocation is three ports per VLAN per switch. Assign VLAN 100 as the Management VLAN and Native VLAN. Any unassigned ports are to be placed into a "Blackhole", an unused and non-routed VLAN (VLAN 999). Additionally, these ports should be disabled and the vlan deleted. Allow only configured VLANs to be permitted on trunk links. Switching Technologies Enable rapid-PVST+ on all switches. Manipulate Spanning Tree to load balance VLANs between all HQ switches. Implement EtherChannel between SwM and SwB. Justify your choice of EtherChannel method chosen. Implement First Hop Redundancy (FHR) using HSRP on Cam1 and Cam2. Load Balance Active and Standby between these two physical routers. Section 4: Network Routing With the flexible IP address scheme created for MegaCon, integration of the newly created environment using OSPF is to be deployed throughout. Routing Requirements Inter-VLAN Routing: Layer 3 routing at the Campbelltown virtual router and router-on-a-stick at Parramatta. Summarisation to be implemented where possible with OSPF. OSPF Router IDs allocated from internal IPv4 addressing. For best
May 16, 2021
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