CS-414: Data Centre Administration
(Course Materials can be found in: www.mmenacer.info)
Lab Sheet 4: Collision and broadcast domain, wireless and fiber optic
configuration of network devices
Reminder
Students are required and it is mandatory to have this software as well as all the labs (including any
saved work from previous labs) on a FLASH memory. This is will allow them to use the software
Packet Tracer 3.2, the tutorial, and save their work on the same Flash memory (around 150 Mb of
space memory is required for the software, labs, and CS-453 lectures).
For this week, the lab will cover the wireless and fiber optic configurations of devices such a pc, route,
and switch, in Simple Mode. The lab will cover as well examples of collision and broadcast domains
using the simulation.
Wireless and Fiber optic configurations
1- Draw the diagram below with the wireless, fiber optic and other physical configuration for the
router, PC and access point (Save this drawing as Lab4Diagram1.pkt):
 Fiber Gigabit Ethernet: Router to PC and Switch
 Copper Gigabit Ethernet: Switch to PCs
 Wireless: Access Point to PCs
By clicking on a device port, different type of mediums (copper, fiber, serial, wireless) can be chosen.
For a PC, the default port medium copper it needs to be removed before selecting a different medium.
Collision and Broadcast domains
1- Draw the diagram below with the following configuration:
Network Device
IP Address
Subnet Mask







PC0
PC1
PC2
PC3
…….
PC30
PC31
192.168.1.10
192.168.1.11
192.168.1.12
192.168.1.13
……………
192.168.1.40
192.168.1.41
255.255.255.0
255.255.255.0
255.255.255.0
255.255.255.0
…………….
255.255.255.0
255.255.255.0


Router1
Router1
192.168.1.1
192.168.100.1
255.255.255.0
255.255.255.0

Internet (cloud)
192.168.100.2
255.255.255.0

Save this drawing as Lab4Diagram2.pkt
2 - Now, using the simulation mode creates Scenario 0 with 3 messages as below and run the
simulation, then notices how messages collide if the network is not segmented using switches and
routers and record the following:
 Number of messages used/transiting in the whole network (collision domain):
 Number of collisions:
 Number of messages that arrived at destination:
 Number of collision domains:
 Number of Broadcast domains:
3 - Now, using the simulation mode creates Scenario 1 with only one message from PC24 to PC9
and run the simulation, then notice and record the number of messages used/transiting in the
whole network (Save this drawing as Lab4Diagram2.pkt).
4 – Now, replace all Hubs with switches in the diagram above, then create Scenario 0 and Scenario 1,
like in diagram 2, and run the simulation and notice that there are less messages that collide when the
network is segmented using switches and routers record the following(save it as Lab4Diagram3.pkt):
 Number of messages used/transiting in the whole network (collision domain):
 Number of collisions:
 Number of messages that arrived at destination:
 Number of collision domains:
 Number of broadcast domains:
Practice Exercise:
Draw and configure a network diagram with:
 2 routers, 3 switches, 3 hubs, 2 servers and 2 printers in each subnet, and 12 PCs.
 Use these network addresses: 192.168.100.0, 192.168.200.0, 192.168.300.0,and 192.168.400.0.
 Use the simulation mode by sending some messages at the same time between PCs, and notice
how messages collide if the network is not segmented using switches and routers.
 Determine the number of collision and broadcast domains.
 Save your design as “lab4diagram4.pkt”, in your flash memory for future use.
Students should review these tutorials and practice at home to be able to get a good
understanding and use of Packet Tracer software. This will be a big help in understanding this
course and the notions of Networking as a whole.