NIT1104: Computer Networks Assignment

COLLEGE OF SCIENCE AND ENGINEERING
Supplementary Assessment – Tri 2 - 2017
Objective:
 IP sub-netting and IP subnet design
 Perform basic IP routing
1 IP Sub-netting (30 marks)
Give a network address 192.168.55.0/24 (Replace xx by the last 2 number of
your student ID. For example, if your student number is s012345678, then
replace xx by 78. Your network will be 192.168.78.0/24)
Perform IP sub-netting for the above given network address into 8 subnets
such that each subnet has the same number of IP Addresses.
Fill-in the sub-network information into the following table:
Subnet - 1
Network Address 192.168.55.0
Subnet Mask 255.255.255.224
Broadcast Address 192.168.55.31
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.1 - 192.168.55.30
Subnet – 2
Network Address 192.168.55.32
Subnet Mask 255.255.255.224
Broadcast Address 192.168.55.63
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.33 - 192.168.55.62
Subnet – 3
Network Address 192.168.55.64
Subnet Mask 255.255.255.224
Broadcast Address 192.168.55.95
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.65 - 192.168.55.94
Subnet – 4
Network Address 192.168.55.96
Subnet Mask 255.255.255.224
Broadcast Address 192.168.55.127
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.97 - 192.168.55.126
Subnet – 5
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
Network Address 192.168.55.128
Subnet Mask 255.255.255.248
Broadcast Address 192.168.55.135
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.129 - 192.168.55.134
Subnet – 6
Network Address 192.168.55.136
Subnet Mask 255.255.255.248
Broadcast Address 192.168.55.143
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.137 - 192.168.55.142
Subnet – 7
Network Address 192.168.55.144
Subnet Mask 255.255.255.248
Broadcast Address 192.168.55.151
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.145 - 192.168.55.150
Subnet – 8
Network Address 192.168.55.152
Subnet Mask 255.255.255.248
Broadcast Address 192.168.55.159
Valid host address range (can be used to
assign to PCs, servers, IP phones, etc.)
192.168.55.153 - 192.168.55.158
2 IP Routing configuration (40 marks)
Given the following network topology
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
Allocate Sub-networks that you designed in question 1 to each sub-network in
the above network topology. Fill in the corresponding sub-network Address
into the following table.
NET-D 192.168.55.97/27
NET-C 192.168.55.65/27
NET-B 192.168.55.33/27
NET-A 192.168.55.1/27
RA-RB subnet 192.168.55.129/29
RA-RC subnet 192.168.55.138/29
RB-RC subnet 192.168.55.145/29
RC-RD subnet 192.168.55.153/29
Assign valid IP addresses of the corresponding subnets to PC and Ports on the
Routers. Filled in your assigned IP addresses and subnet mask into the
following table:
NET-A
IP Address of PC / subnet mask 192.168.55.2/27
IP Address of Router Port / subnet mask 192.168.55.1/27
NET-B
IP Address of PC / subnet mask 192.168.55.34/27
IP Address of Router Port / subnet mask 192.168.55.33/27
NET-C
IP Address of PC / subnet mask 192.168.55.66/27
IP Address of Router Port / subnet mask 192.168.55.65/27
NET-D
IP Address of PC / subnet mask 192.168.55.98/27
IP Address of Router Port / subnet mask 192.168.55.97/27
RA-RB subnet
IP Address of Router Port RA / subnet mask 192.168.55.129/29
IP Address of Router Port RB / subnet mask 192.168.55.130/29
RA-RC subnet
IP Address of Router Port RA / subnet mask 192.168.55.137/29
IP Address of Router Port RC / subnet mask 192.168.55.138/29
RB-RC subnet
IP Address of Router Port RB / subnet mask 192.168.55.145/29
IP Address of Router Port RC / subnet mask 192.168.55.146/29
RC-RD subnet
IP Address of Router Port RC / subnet mask 192.168.55.153/29
IP Address of Router Port RD / subnet mask 192.168.55.154/29
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
Provide configuration script for each router to assign IP address to Router Port
and configure IP Routing (can be either Static or Dynamic Routing) such that
the network is full connected and every device can ping any other devices.
RA Router
RA>enable
RA#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
RA(config)#interface Serial0/0/0
RA(config-if)#ip address 192.168.55.137 255.255.255.248
RA(config-if)#no shutdown
RA(config-if)#
RA(config-if)#exit
RA(config)# interface Serial0/0/1
RA(config-if)#ip address 192.168.55.129 255.255.255.248
RA(config-if)#no shut
RA(config-if)#exit
RA(config)#
RA(config)#interface fa 0/0
RA(config-if)#ip address 192.168.55.1 255.255.255.224
RA(config-if)#no shut
RA(config-if)#
RA(config-if)#exit
RA(config)#router eigrp 1
RA(config-router)#no auto-summary
RA(config-router)#network 0.0.0.0
RA(config-router)#
RB Router
RB>enable
RB#config t
RB(config)#int s0/0/0
RB(config-if)#ip add 192.168.55.130 255.255.255.248
RB(config-if)#no shut
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
RB(config-if)#
RB(config-if)#exit
RB(config)#
RB(config)#int s0/0/1
RB(config-if)#ip add 192.168.55.145 255.255.255.248
RB(config-if)#no shut
RB(config-if)#exit
RB(config)#
RB(config)#int fa 0/0
RB(config-if)#ip address 192.168.55.33 255.255.255.224
RB(config-if)#no shut
RB(config)#router eigrp 1
RB(config-router)#no auto-summary
RB(config-router)#network 0.0.0.0
RB(config-router)#
RC Router
RC>
RC>en
RC#config t
RC(config)#int s0/0/0
RC(config-if)#ip add 192.168.55.153 255.255.255.248
RC(config-if)#no shut
RC(config-if)#exit
RC(config)#int s0/0/1
RC(config-if)#ip add 192.168.55.138 255.255.255.248
RC(config-if)#no shut
RC(config-if)#
RC(config-if)#exit
RC(config)#int s0/1/0
RC(config-if)#ip add 192.168.55.146 255.255.255.248
RC(config-if)#no shut
RC(config-if)#
RC(config-if)#exit
RC(config)#int fa 0/0
RC(config-if)#ip add 192.168.55.65 255.255.255.224
RC(config-if)#no shut
RC(config-if)#exit
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
RC(config)#router eigrp 1
RC(config-router)#no auto-summary
RC(config-router)#network 0.0.0.0
RC(config-router)#
RD Router
RD>
RD>en
RD#config t
RD(config)#int s0/0/0
RD(config-if)#ip add 192.168.55.154 255.255.255.248
RD(config-if)#no shut
RD(config-if)#
RD(config-if)#exit
RD(config)#int fa 0/0
RD(config-if)#ip add 192.168.55.97 255.255.255.224
RD(config-if)#no shut
RD(config-if)#
RD(config-if)#exit
RD(config)#
RD(config)#router eigrp 1
RD(config-router)#no auto-summary
RD(config-router)#network 0.0.0.0
RD(config-router)#
3 Network Implementation (30 marks)
Implement the network as shown in Question 2 into Packet Tracer. Configure
IP Addresses of All devices and Routing for the network. After network is fully
configured and functional, perform Ping Verification to test the network.
Capture Screenshot and place ping verification here.
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
Show Ping from PC in NET – A to PC in NET- B
Show Ping from PC in NET – A to PC in NET- C
Show Ping from PC in NET – A to PC in NET- D
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
Show Ping from PC in NET – B to PC in NET- C
Show Ping from PC in NET – C to PC in NET- D
SUBMISSION REQUIREMENT: You are requested to submit this design
document (with your answer) and the Packet Tracer file of the network
implementation to Vu Collaborate submission Dropbox by the due date (as
indicated in the drop box)
NIT1104 – COMPUTER NETWORKS – A2 2017

COLLEGE OF SCIENCE AND ENGINEERING
4 Bibliography
El Idrissi, D., Elkamoun, N., Lakrami, F. and Hilal, R., 2017. Performance
Comparison of Protocols Combination based on EIGRP and OSPF for Real-Time
Applications in Enterprise Networks. INTERNATIONAL JOURNAL OF ADVANCED
COMPUTER SCIENCE AND APPLICATIONS, 8(5), pp.145-150.
Jesin, A., 2014. Packet Tracer Network Simulator. Packt Publishing Ltd.
NIT1104 – COMPUTER NETWORKS – A2 2017