IFT 266 Introduction to Network Information Communication Technology (ICT)
Lab 23
Using VLSM in Designing a Network
Co-authored by Peter Sype
Scenario
The following exercise will demonstrate the process to assign IP addresses using VLSM with 2 simplified
campus buildings sharing an IP 192.168.69.0/24.
Remember
VLSM allows a system planner to assign multiple subnet masks in the same IP address space.
1. Setup the following routers as demonstrated below (Use the Serial Ports between the routers)
You will need to add additional modules to the router i.e. HWIC-2T and HWIC-4ESW
2. Add the following switches along with the labels for hosts needed.
This study source was downloaded by 100000884024057 from CourseHero.com on 11-30-2024 04:28:15 GMT -06:00
https://www.coursehero.com/file/191373489/Lab-23-Using-VLSM-in-Designing-a-Networkdocx/
, 3. How many total usable hosts does our IP have available before we use VLSM to design our layout?
____________________254______________
What is the default subnet mask?
_____________255.255.255.0______________________
How many separate subnets are needed in the above topology?
________________4___________________
4. In VLSM you must first identify the subnet requiring the largest allotment of IP addresses.
List the subnets by hosts from largest to smallest.
Subnet Name Hosts Needed
LABS_____ _____________125______________
STAFF______ _______ 50____________________
CLASSROOMS________ ___________29________
RECEPTION_________ _________5__________________
_W1__________ ___________2________________
5. Assign the subnet masks required for each subnet.
To calculate the subnet, remember that each subnet loses an IP to the Network IP and the Broadcast IP.
The largest subnet requires 125 so the /26 subnet only has 30 usable IP; thus our first subnet must be /25
with the ability to hold 126 usable IP addresses.
Network ID Usable range Subnet Mask
Labs _192.168.69.0/25_____192.168.69.1 - 192.168.69.126________255.255.255.128______
Staff 192.168.69.128/26 192.168.69.129 – 192.168.69.190 255.255.255.192
Classrooms 192.168.69.193/27 192.168.69.193 – 192.168.69.222 255.255.255.224
This study source was downloaded by 100000884024057 from CourseHero.com on 11-30-2024 04:28:15 GMT -06:00
https://www.coursehero.com/file/191373489/Lab-23-Using-VLSM-in-Designing-a-Networkdocx/
Lab 23
Using VLSM in Designing a Network
Co-authored by Peter Sype
Scenario
The following exercise will demonstrate the process to assign IP addresses using VLSM with 2 simplified
campus buildings sharing an IP 192.168.69.0/24.
Remember
VLSM allows a system planner to assign multiple subnet masks in the same IP address space.
1. Setup the following routers as demonstrated below (Use the Serial Ports between the routers)
You will need to add additional modules to the router i.e. HWIC-2T and HWIC-4ESW
2. Add the following switches along with the labels for hosts needed.
This study source was downloaded by 100000884024057 from CourseHero.com on 11-30-2024 04:28:15 GMT -06:00
https://www.coursehero.com/file/191373489/Lab-23-Using-VLSM-in-Designing-a-Networkdocx/
, 3. How many total usable hosts does our IP have available before we use VLSM to design our layout?
____________________254______________
What is the default subnet mask?
_____________255.255.255.0______________________
How many separate subnets are needed in the above topology?
________________4___________________
4. In VLSM you must first identify the subnet requiring the largest allotment of IP addresses.
List the subnets by hosts from largest to smallest.
Subnet Name Hosts Needed
LABS_____ _____________125______________
STAFF______ _______ 50____________________
CLASSROOMS________ ___________29________
RECEPTION_________ _________5__________________
_W1__________ ___________2________________
5. Assign the subnet masks required for each subnet.
To calculate the subnet, remember that each subnet loses an IP to the Network IP and the Broadcast IP.
The largest subnet requires 125 so the /26 subnet only has 30 usable IP; thus our first subnet must be /25
with the ability to hold 126 usable IP addresses.
Network ID Usable range Subnet Mask
Labs _192.168.69.0/25_____192.168.69.1 - 192.168.69.126________255.255.255.128______
Staff 192.168.69.128/26 192.168.69.129 – 192.168.69.190 255.255.255.192
Classrooms 192.168.69.193/27 192.168.69.193 – 192.168.69.222 255.255.255.224
This study source was downloaded by 100000884024057 from CourseHero.com on 11-30-2024 04:28:15 GMT -06:00
https://www.coursehero.com/file/191373489/Lab-23-Using-VLSM-in-Designing-a-Networkdocx/
