ITC542 InterNetworking with TCP/IP: Network Design Project

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ITC542 INTERNETWORKING WITH TCP/IP
ITC542
Internetworking with TCP/IP
Assessment 3
Network Design
Student Name: Abhiroop Kola
Student ID: 11623877
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ITC542 INTERNETWORKING WITH TCP/IP
Contents
TASK 1 – RESEARCH...................................................................................................................4
TASK 2 – SETTING UP A NETWORK........................................................................................6
TASK 3 - CONFIGURING NETWORK SERVICES..................................................................15
References......................................................................................................................................21
Appendix........................................................................................................................................22
List of Figures
Figure 1: Packet tracer Network topology.......................................................................................6
Figure 2: Router 0 interface configuration......................................................................................7
Figure 3: Router 1 interface configuration......................................................................................7
Figure 4:PC0 interface configuration..............................................................................................8
Figure 5: PC1 interface configuration.............................................................................................8
Figure 6: Laptop 0 interface configuration......................................................................................9
Figure 7: Sever 0 interface configuration........................................................................................9
Figure 8: Server 1 interface configuration.....................................................................................10
Figure 9: Server 2 interface configuration.....................................................................................10
Figure 10: Router 0 EIGRP dynamic routing protocol configuration...........................................11
Figure 11: Router 1 EIGRP dynamic routing protocol configuration...........................................12
Figure 12: Local interface ping......................................................................................................12
Figure 13: Local router and remote router pings...........................................................................13
Figure 14: Pings to remote server..................................................................................................13
Figure 15: Traceroute server 2.......................................................................................................14
Figure 16: DHCP Server configuration.........................................................................................15
Figure 17: DHCP Client verification.............................................................................................16
Figure 18: DNS server configuration............................................................................................16
Figure 19: DNS resolution verification.........................................................................................17
Figure 20: Web server configuration.............................................................................................18
Figure 21: webserver verification from PC2 browser...................................................................18
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Figure 22: Firewall filter configuration.........................................................................................19
Figure 23: Web access denied from Laptop 0...............................................................................20
Figure 24: HTTP packets from 180.77.240.4 denied to the webserver.........................................20
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ITC542 INTERNETWORKING WITH TCP/IP
TASK 1 – RESEARCH
The network design for the current assessment can be completed using a range of
options/method. This method includes simulation and emulation tools. These are cisco packet
tracer, gns3 network emulator and eve-ng.
Cisco packet tracer is a network simulation tool from cisco networks that can be used to create
network topologies and simulate network protocols. It is built for cisco-based hardware but also
includes general end-host devices such as PC’s, and printers. Both wired and wireless topologies
can be created. The simulation tool can be installed on a windows machine and accessed as an
application on the PC. It is a good tool for creating and testing different network topologies
(Rafiq, et-al, 2001).
PROS
 Simple to understand with easy user interface
 Topologies can be CPU/designed without using complex tools.
 Simulations are not memory/CPU intensive
CONS
 Lacks the functionality to implement complex protocols
 As a simulation tool, some results might differ from real hardware devices.
 Susceptible to bug and design flaws
 Simulation is restricted to the devices on the software platform
GNS-3
Is a network emulation software that uses operating system (OS) images to emulate the behavior
of network protocols, technologies and services? It can be used to design different complex
network topologies and supports operating systems from major vendors. It can also be connected
to the host machine and communication can be initiated between an emulated device and the
host. It is ideal platform for performing advanced testing and uses CPU resources from the host
device. Emulation is a better alternative to simulation software’s (Costa, 2005).
PROS
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 Uses real images of operating system, therefore results are same as connecting real
devices
 Supports multiple vendors
 Supports connectivity with real hardware devices
CONS
 Emulations are memory /CPU intensive because it relies hardware requirements for
running these operating system
 Requires hardware with high system resources for ease of usage
 Difficult to setup and use
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ITC542 INTERNETWORKING WITH TCP/IP
TASK 2 – SETTING UP A NETWORK
The network topology for the setup is shown below, I created this using packet tracer network
simulator. I added the desired devices to the workspace, and the connections were linked
between the devices using the appropriate cable type. The devices are automatically turned on,
when added to the workspace.
Figure 1: Packet tracer Network topology
IP ADDRESSING
The IP addressing for the topology uses addresses from the following networks for the different
LANs:
Sales: 180.77.0.0/17
Marketing: 180.77.128.0/18
Online Sales: 180.77.192.0/19
Advertising: 180.77.224.0/20
Product Support: 180.77.240.0/21
Router Links: 180.77.248.0/30, 180.77.248.4/30,
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INTERFACE CONFIGURATION
ROUTER INTERFACE CONFIGURATION
The interfaces of the routers were configured with the appropraite IP addresses and the no
shutdown command was isuued to activate the each interface. A status message displayed the
state of the interface (Bolotin, et-al, 2004).
Figure 2: Router 0 interface configuration
Figure 3: Router 1 interface configuration
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PC0 interface configuration
On PC’s and servers, we configure the IP address for each interface and save the configuration
by closing the window displayed.
Figure 4:PC0 interface configuration
Figure 5: PC1 interface configuration
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Figure 6: Laptop 0 interface configuration
Server interface configuration
Figure 7: Sever 0 interface configuration
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Figure 8: Server 1 interface configuration
Figure 9: Server 2 interface configuration
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ITC542 INTERNETWORKING WITH TCP/IP
DYNAMIC ROUTING PROTOCOL CONFIGURATION (EIGRP)
The enhanced interior gateway routing protocol was configured on both router with an
autonomous sytem number of 100. The directly connected links and the LAN networks were
advertised by each router. The output in the figure 11, indicates that the adjacency is up.
Figure 10: Router 0 EIGRP dynamic routing protocol configuration
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Figure 11: Router 1 EIGRP dynamic routing protocol configuration
CONNECTIVITY VERIFICATION
On PC0 we ping the local interface and receive replies indicating full connectivity
Figure 12: Local interface ping
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