Simulation of Hierarchical Network Design Model using Cisco Packet Tracer

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TCP/IP NETWORKING
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Executive Summary
A good network design consist of a number of infrastructure which consist of network devices such as
routers, switches, hubs, transmission media, among others. A good design follows hierarchical model
that divides the entire network into three distinct layers (Welcher, 2015). These layers include the
access layer, distribution layer and the core layer. Each layer is characterized with the kind of the
operation it performs in the network. For a good network, it should be scalable, that is it devices can be
added freely without affecting the operations of the other parts of the network. Another feature of a
good network is security, easy to troubleshoot and monitor and the ability to communicate effectively
without hitches.
This report therefore involve the simulation of the hierarchical network design model using cisco packet
tracer which is a network simulation tool from cisco (SLATTERY, 2007). This assessment consist of two
parts of the practical assessment. The first part consist of a basic network setup using PCs, switches and
routers and the transmission media. The network Interfaces are also created and network Linux
commands such as ping and traceroute are used. The second part involves the configuration of various
network services such as DHCP, Web server, DNS server and network firewalls using cisco packet tracer.
Introduction
Following the given instructions in this assessment cisco packet tracer tool was used to simulate the
network and all the services needed in this report (Scire, 2015). A screenshot of every section is
provided as well as the execution of the Linux commands used in both task 1 and task 2 (Techopedia,
2018). The following topology was used during the simulation process.
Task 1
This section involves the setting up of the basic network functionalities such as topology using at least
three PCs, two routers and three servers as shown in the topology above. Also using private IP addresses
for the two LANs where the servers and the PCs are located and for the WAN between the two routers
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(Fisher, 2018). The IP address for the server network is 174.24.0.0 while that of the PCs network is
10.25.0.0 (Media, 2016). The IP address used to link the two networks that is for the WAN between the
two routers is 192.168.0.0.
Configuration of PCs, servers and routers interfaces
To configure Pcs and Servers using the above IP addresses, each device is assigned an IP address
manually by double clicking on each device and open the desktop option and go to IP configuration as
shown in the PC1 below.
This is done to all the PCs in the topology and the same process repeated for the servers in the other
LAN as shown below with server1 in the network (CCNA, 2018).
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The same is also repeated to all the other two servers in the network. The process of assigning these
devices IP addresses is manually done by selecting as static option as shown in the above screenshots.
For the routers, the concept is a bit difference, this is because routers links between more than one
network and therefore each interface has to be given the right IP address using the commands below
(Cisco, 2018).
Router 0
To configure this router, one double clicks on it and run the commands below.
Router>en
Router#config t
Router(config)#int fa0/0
Router(config-if)#ip address 172.24.0.1 255.255.0.0
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#int se2/0
Router(config-if)#ip address 192.168.0.1 255.255.0.0
Router(config-if)#no shutdown
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