Page

$7$

of $8$

Page $1$ of $8$

ICT$5250$ Computer Networks and Security

Week$-5$ Laboratory Practicum

Objectives

Familiarize students with IP addresses scheme.

Give students hand$-$on experience with IP address allocation.

Configure dynamic routing protocol using RIP

In order to complete this Lab you have to create account with the Cisco Network Academy if you use

Cisco Packet Tracer Student in order to allow you to use the full features of the packet tracer. This

include the saving of your work more than three times. In addition, this account is also required in the

process of developing your packet tracer file for your Network simulation assignment. Without this

account you cannot save your file more than three times.

In this lab, you have to create a computer network consist of three routers and three switches and

some PCs as shown in Figure $2$:

Task$-1$: Create account $($if you didnt already create one$)$ with the Cisco Network Academy

Follow the steps provided at the word document file provided under Week$-2$: Create Account$-$

Packet Tracer Student

Task$-2$: Select the required network devices as shown below:

Figure $1$: Network devices

Page $2$ of $8$

Task$-3$: Add module to the routers

Add two modules to the routes $($Router$-0,$ Router $-1$ and Router$-2)$:

HWIC$-2$T that provides $2$ port serial high speed WAN

HWIC$-4$ESW that provides four switching ports

Task$-2$:Create the network as shown in the following diagram:

Addressing Table:

Device IP Address Subnet Mask Default Gateway

$172\mathrm{.}16\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$AR$0$

$172\mathrm{.}19\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$A

$172\mathrm{.}17\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$A

$172\mathrm{.}19\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$A

R$1$

$172\mathrm{.}20\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$A

$172\mathrm{.}18\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$AR$2$

$172\mathrm{.}20\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$ N$/$A

PC$0172\mathrm{.}16\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0172\mathrm{.}16\mathrm{.}0\mathrm{.}1$

PC$1172\mathrm{.}17\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0172\mathrm{.}17\mathrm{.}0\mathrm{.}1$

PC$2172\mathrm{.}18\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0172\mathrm{.}18\mathrm{.}0\mathrm{.}1$

Router type: Cisco router: $1841$

Switch type: $2950-24$

Figure $2$: Network topology

Page $3$ of $8$

Task$-3$: Display the port labels on your diagram, as follows:

From the main menu, select Options then Preferences and then select Always Show Port Labels shown in

the following figure:

Task $4$: Perform Basic Configuration of Router R$0$

Click on Router$-0,$ then select CLI tab and then press Enter and write No for the question:

Would you like to enter the initial configuration dialog? $[$yes$/$no$]$:

and press Enter

Then, complete, the following steps:

Step $1$: Enter privileged EXEC mode.

Router$>$enable

Router#

Step $2$: Enter global configuration mode.

Router#configure terminal

Enter configuration commands, one per line.

Router$($config$)$#

Step $3$: Configure the router name as R$0.$

Router$($config$)$#hostname R$0$

R$0($config$)$#

Note: You can write some charterers of the commands in CLI and press Tab key from the keyboard to

complete the command for you.

Use the same steps $($Step$-1,2$ and $3)$ to configure the name for router $2$ and router $3$ to be R$2$ and R$3,$

respectively.

Page $4$ of $8$

Task $5$: Configure the IP addresses:

Step $1$: click on Router $0.$

Step $2$: Configure the FastEthernet$0/0$ interface for R$0.$

Configure the Fa$0/0$ interface with the IP address $172\mathrm{.}16\mathrm{.}0\mathrm{.}1/16.$

R$0($config$)$#interface fa$0/0$

R$0($config$-$if$)$#ip address $172\mathrm{.}16\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$0($config$-$if$)$#no shutdown

Step $3$: Configure the Se$0/1/0$ interface for router R$0.$

Configure the Serial$0/1/0$ interface with the IP address $172\mathrm{.}19\mathrm{.}0\mathrm{.}1/16.$

R$0($config$-$if$)$#interface serial $0/1/0$

R$0($config$-$if$)$#ip address $172\mathrm{.}19\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$0($config$-$if$)$#clock rate $64000,$ if it is DCE

R$0($config$-$if$)$#no shutdown

Note: The interface will be activated until the serial interface on R$1$ is configured and activated

Step $4$: Configure the Se$0/1/0$ interface for router R$1.$

Configure the Serial$0/1/0$ interface with the IP address $192\mathrm{.}168\mathrm{.}2\mathrm{.}2/24.$

R$2($config$-$if$)$#interface serial $0/1/0$

R$2($config$-$if$)$#ip address $172\mathrm{.}19\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$2($config$-$if$)$#clock rate $64000,$ if it is DCE

R$2($config$-$if$)$#no shutdown

R$2($config$-$if$)$#

In the same way compete the following steps:

Step $5$: Configure the Se$0/1/1$ interface for router R$1$ with the IP address $172\mathrm{.}20\mathrm{.}0\mathrm{.}2$ and mask $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

Page $5$ of $8$

R$1($config$-$if$)$#interface serial $0/1/1$

R$1($config$-$if$)$#ip address $172\mathrm{.}20\mathrm{.}0\mathrm{.}2255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$1($config$-$if$)$#clock rate $64000,$ if it is DCE

R$1($config$-$if$)$#no shutdown

Step $6$: Configure the FastEthernet$0/0$ interface for R$1$ with the IP address $172\mathrm{.}17\mathrm{.}0\mathrm{.}1$ and mask

$255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$2($config$)$#interface fa$0/0$

R$2($config$-$if$)$#ip address $172\mathrm{.}17\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$2($config$-$if$)$#no shutdown

Step $7$: Configure the Se$0/1/0$ interface for router R$2$ with the IP address $172\mathrm{.}20\mathrm{.}0\mathrm{.}1$ and mask $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$3($config$-$if$)$#interface serial $0/1/0$

R$3($config$-$if$)$#ip address $172\mathrm{.}20\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$3($config$-$if$)$#clock rate $64000,$ if it is DCE

R$3($config$-$if$)$#no shutdown

R$3($config$-$if$)$#

Step $8$: Configure the FastEthernet$0/0$ interface for R$2$ with the IP address $172\mathrm{.}18\mathrm{.}0\mathrm{.}1$ and mask

$255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$3($config$)$#interface fa$0/0$

R$3($config$-$if$)$#ip address $172\mathrm{.}18\mathrm{.}0\mathrm{.}1255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

R$3($config$-$if$)$#no shutdown

Step $9$: Verify IP addressing, and interfaces, use the show IP interface brief command $($show ip interface$)$

to verify that the IP addressing is correct and that the interfaces are active.

Page $6$ of $8$

Task $6$: Configure the IP address for Ethernet interfaces of PC$0,$ PC$1,$ and PC$2$

Step $1$: Configure Ethernet interfaces of PC$0,$ PC$1,$ and PC$2$ with the IP addresses and default gateways

from the table under the Topology Diagram.

Select PC$1,$ then IP Configuration, and enter IP address and subnet mask and Default Gateway as shown:

In the same way, configure Ethernet interfaces of PC$1,$ and PC$2$

PC$1$:

IP : $172\mathrm{.}17\mathrm{.}0\mathrm{.}2$

Mask: $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

Default Gateway: $172\mathrm{.}17\mathrm{.}0\mathrm{.}1$

PC$2$:

IP : $172\mathrm{.}18\mathrm{.}0\mathrm{.}2$

Mask: $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

Default Gateway: $172\mathrm{.}18\mathrm{.}0\mathrm{.}1$

Testing$-1$:

Test the connection between PC$0$ and PC$2$ using ping command, are they connected? Why

Answer:

Task $7$ : Configure RIP

$($Refer to the figures below for R$0,$ R$1,$ and R$2)$

Step $1$: Enable dynamic routing

To enable a dynamic routing protocol, enter global configuration mode and use the router command.

Enter router $?$ at the global configuration prompt to a see a list of available routing protocols on your router. To

enable RIP, enter the command router rip in global configuration mode.

Router$($config$)$#router rip

Step $2$: Enter classful network addresses

Once you are in routing configuration mode, enter the classful network address for each directly connected

network, using the network command with the following syntax:

Page $7$ of $8$

Router$($config$-$router$)$#network

Router$($config$-$router$)$#network

The network command:

Enables RIP on all interfaces that belong to this network. These interfaces will now both send and receive RIP

updates.

Advertises this network in RIP routing updates sent to other routers every $30$ seconds.

Task$-8$: Verification of network connecting:

Now, you should be able to ping successfully between PC$0$ and PC$1.$ You also should be able to successfully