Lab Report 1: VLSM With Packet Tracer

Lab Report 01

Lab Report: 01 Title: VLSM with Packet Tracer Implementation and Static Routing Configuration Objective: ⇰ Use variable-length subnet mask (VLSM) to support more efficient use of the assigned IP addresses for various requirement of the organizations in real life senior. ⇰ Configure a LAN and Test the connectivity of the LAN devices. ⇰ Static routing configuration of Wide Area Network (WAN).

Tools: CISCO Packet Tracer 6.3. Simulation: An IP Address 192.168.10.0/22 has been allocated in a university and hosts requirement of the departments: CSE Department = 60 hosts EEE Department = 40 hosts ETE Department = 30 hosts These departments also have point to point link between them (CSE-EEE, CSE-ETE, ETE-EEE). According the requirements and IP, the Subnetting Table will be, Subnet Name

Needed Size

Allocated Size

Address

Mask

CSE

60

64

192.168.8.0

/26

EEE

40

64

192.168.8.64

/26

ETE

30

32

192.168.8.128

/27

CSE-EEE

2

4

192.168.8.160

/30

CSE-ETE

2

4

192.168.8.164

/30

ETE-EEE

2

4

192.168.8.168

/30

Assignable Range 192.168.8.1 192.168.8.62 192.168.8.65 192.168.8.126 192.168.8.129 192.168.8.158 192.168.8.161 192.168.8.162 192.168.8.165 192.168.8.166 192.168.8.169 192.168.8.170

Broadcast Address 192.168.8.63

192.168.8.127

192.168.8.159

192.168.8.163

192.168.8.167 1 192.168.8.171

Md. Saidur Rahman Kohinoor || ID: 142-15-3669

Lab Report 01

That means we can define, LAN 1 (CSE): Network Address 192.168.8.0, Subnet Mask 255.255.255.192 and hosts range from 192.168.8.1 to 192.168.8.62 . Here we use first host IP 192.168.8.1 as our LAN 1’s default gateway. LAN 2 (EEE): Network Address 192.168.8.64, Subnet Mask 255.255.255.192 and hosts range from 192.168.8.65 to 192.168.8.126 . Here we use 192.168.8.65 as our LAN 2’s default gateway. LAN 3 (ETE): Network Address 192.168.8.128, Subnet Mask 255.255.255.224 and hosts range from 192.168.8.129 to 192.168.8.158 . Here we use 192.168.8.129 as our LAN 3’s default gateway. WAN 1 (CSE-EEE): Network Address 192.168.8.160, Subnet Mask 255.255.255.252 and hosts are 192.168.8.161 and 192.168.8.162 WAN 2 (CSE-ETE): Network Address 192.168.8.164, Subnet Mask 255.255.255.252 and hosts are 192.168.8.165 and 192.168.8.166 WAN 3 (ETE-EEE): Network Address 192.168.8.168, Subnet Mask 255.255.255.252 and hosts are 192.168.8.169 and 192.168.8.170

Now, draw a topology, assign IP addresses to the hosts, setting default gateway, configuring routers for WAN and then showing their path as static routing protocol, like that-

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Md. Saidur Rahman Kohinoor || ID: 142-15-3669

Lab Report 01 Hosts IP Configuration: Click on the PC and go to the IP configuration mode and then fill up, PC1: CSE

PC2:

CSE

PC3: EEE

PC4:

EEE

PC5: ETE

3

PC6:

ETE

Md. Saidur Rahman Kohinoor || ID: 142-15-3669

Lab Report 01

Command: Router Configuration: At first Assign IP addresses to the interfaces for both Serial interface and Fast Ethernet interface and Define gateway to the host PCs. So, going to the Router 1 CLI mode and writingRouter 1 (R1) Router> en [enable] Router# conf t [configure terminal] Router(config)# interface f0/0 Router(config-if)# ip address 192.168.8.1 255.255.255.192 [gateway of host PCs] Router(config-if)# no shut [no shutdown] Router(config-if)# exit Router(config)# interface s2/0 Router(config-if)# ip address 192.168.8.161 255.255.255.252 Router(config-if)# clock rate 64000 Router(config-if)# no shut Router(config-if)# exit Router(config)# interface s3/0 Router(config-if)# ip address 192.168.8.169 255.255.255.252 Router(config-if)# clock rate 64000 Router(config-if)# no shut Router(config-if)# exit Router(config)# exit Router# copy run start [copy running-config startup-config] Actually, copy run start is just copying the running configuration in RAM to the startup configuration. So, for this configuration it is not mandatory. However, Router1 configuration is done. Now, same as configure another Routers (R2 & R3). Router 2 (R2) Router> en Router# conf t Router(config)# interface f0/0 Router(config-if)# ip address 192.168.8.65 255.255.255.192 Router(config-if)# no shut Router(config-if)# exit Router(config)# interface s2/0 Router(config-if)# ip address 192.168.8.162 255.255.255.252 Router(config-if)# no shut Router(config-if)# exit Router(config)# interface s3/0 Md. Saidur Rahman Kohinoor || ID: 142-15-3669

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Lab Report 01 Router(config-if)# ip address 192.168.8.165 255.255.255.252 Router(config-if)# clock rate 64000 Router(config-if)#no shut Router(config-if)#exit Router(config)#exit Router#copy run start Router 3 (R3) Router> en Router# conf t Router(config)# interface f0/0 Router(config-if)# ip address 192.168.8.129 255.255.255.224 Router(config-if)# no shut Router(config-if)# exit Router(config)# interface s2/0 Router(config-if)# ip address 192.168.8.170 255.255.255.252 Router(config-if)# no shut Router(config-if)# exit Router(config)# interface s3/0 Router(config-if)# ip address 192.168.8.166 255.255.255.252 Router(config-if)#no shut Router(config-if)#exit Router(config)#exit Router#copy run start Ok, all routers configurations are done! Now, we define static routing to the routers as a final step to introduce the path of the transferring packets. R1 Router#config t Router(config)#ip route 192.168.8.128 255.255.255.224 192.168.8.170 Router(config)#ip route 192.168.8.64 255.255.255.192 192.168.8.162 Router(config)#exit Router#copy run start R2 Router#config t Router(config)#ip route 192.168.8.0 255.255.255.192 192.168.8.161 Router(config)#ip route 192.168.8.128 255.255.255.224 192.168.8.166 Router(config)#exit Router#copy run start Md. Saidur Rahman Kohinoor || ID: 142-15-3669

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Lab Report 01 R3 Router#config t Router(config)#ip route 192.168.8.0 255.255.255.192 192.168.8.169 Router(config)#ip route 192.168.8.64 255.255.255.192 192.168.8.165 Router(config)#exit Router#copy run start

Results: All works is done and it’s time for checking the outputs. So now testing the network with ping and trace route (tracert) commands. Ping from PC1 to PC6

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We looking at here that four packets are sent and successfully all packets are received. Same as Ping from PC3 to PC5 Md. Saidur Rahman Kohinoor || ID: 142-15-3669

Lab Report 01

That means all connections are well. Now, Traceroute from PC2 to PC4

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Md. Saidur Rahman Kohinoor || ID: 142-15-3669

Lab Report 01 Traceroute from PC5 to PC2

Comments: Variable-Length Subnet Masking is configured on the router by enabling routing protocols (such as EIGRP or OSPF) that support this (here I configured static routing), and by configuring the subnet masks of the various Cisco interfaces in the ip address interface sub-command.

Download link: The full configured topology is available in that linkhttps://www.dropbox.com/s/prlj3dyaw0im2lf/VLSM%20with%20packet%20Tracer.pkt?dl=0

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Md. Saidur Rahman Kohinoor || ID: 142-15-3669

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