Indian Institute of Information Technology Surat
Kapil Yadav
[UI23CS32]
Course Faculty :
Dr. Sachin D. Patil
Mrs. Nidhi Desai
Lab 4:
Aim:
To understand the working of the CISCO packet tracer. Based on the understanding, design a
new topology of your own choice consisting of a minimum of 3 routers and under each router, a
minimum of 5 machines need to be connected Observations:
#Created topology and assigned the IP address :
Theory:-
Cisco Packet Tracer is a comprehensive network simulation tool designed for learning and
practicing networking concepts such as device configuration, routing protocols, and
troubleshooting. When designing a network topology in Packet Tracer, it's essential to
understand the key components and their roles. Routers, which operate at Layer 3 of the OSI
model, are responsible for forwarding data between different networks by using routing tables.
In contrast, switches function at Layer 2, facilitating communication within the same network by
forwarding data based on MAC addresses. End devices like PCs, laptops, and servers form
the network's endpoints, each requiring a unique IP address for identification.
Network Components in the Proposed Design
Router Configuration
Each router will be configured with:
LAN Interface: Connecting to local machines via switches.
Serial Interface: Connecting to other routers for inter-network communication.
IP Addressing Scheme
● Each LAN under a router will have a unique IP subnet to avoid conflicts.
● The router’s LAN interface IP will act as the Default Gateway for the connected
machines.
Routing Protocols
● To ensure devices across different networks communicate, you can implement:
○ Static Routing: Manually defining the routes.
○ Dynamic Routing Protocols like:
○ RIP (Routing Information Protocol)
○ OSPF (Open Shortest Path First)
○ EIGRP (Enhanced Interior Gateway Routing Protocol)
Cable Types
● Ethernet Cables: For connecting PCs to switch
Connecting 3 Routers with 5 different devices
# sending message
#Simulation Panel
Router code in Terminal:
Router 1: Router 3
Router 2
enable enable
configure enable configure terminal
terminal configure LAN Configuration
terminal interface GigabitEthernet0/0
LAN Configuration ip address 192.168.3.1
interface GigabitEthernet0/0 LAN Configuration 255.255.255.0
ip address 192.168.1.1 interface GigabitEthernet0/0 no shutdown
255.255.255.0 ip address 192.168.2.1
no shutdown WAN Link to Router 2
255.255.255.0
interface Serial0/0/1
no shutdown ip address 10.0.0.6
WAN Link to Router 2 255.255.255.252 no
interface Serial0/0/0 WAN Link to Router 1 shutdown
ip address 10.0.0.1 interface Serial0/0/0
255.255.255.252 no ip address 10.0.0.2 Enable RIP Routing
shutdown 255.255.255.252 no router rip version 2
network 192.168.3.0
shutdown
network 10.0.0.0 no
! Enable RIP auto-summary
Routing router rip WAN Link to Router 3
version 2 network interface Serial0/0/1 end
192.168.1.0 ip address 10.0.0.5 write
network 10.0.0.0 no 255.255.255.252 no
auto-summary end shutdown
write
Enable RIP Routing
router rip version 2
network 192.168.2.0
network 10.0.0.0 no
auto-summary end
write
Conclusion
Through this network design in Cisco Packet Tracer, we have demonstrated the process of configuring
routers, assigning IP addresses, and implementing RIP routing. This setup highlights the importance of
structured IP addressing, efficient routing protocols, and network troubleshooting techniques. By testing
connectivity using tools like ping and traceroute , we ensure seamless communication between all
devices across the three routers. This practical approach enhances our understanding of network
topology design and router configurations in real-world scenarios.
