InfoSearched
Published -
- August 9, 2019
- 2:22 pm
Class B ID – Subnetting
One day your supervisor walks to you, saying: “here is the network ID 192.168.4.0/24, please create three separate networks or subnets for a coffee shop: Sunny Cafe.” The three separate subnets/networks are: One is for the office, one for the front desk and storage room, and one is for public use.
Your task is to list each subnet network ID, subnet mask, Host ID Range, # of usable host IDs, and Broadcast ID. One last question: How many subnets are wasted after subnetting?
Subnetting Practice
With the same network ID: 192.168.4.0/24, you are required to get 6 subnets. List each of new network ID, subnet mask, host ID range, # of usable hosts, and broadcast ID. One last question: how many subnets are wasted after subnetting?
Answer for your reference:
We will have 8 subnets. subnet mask is /27 for all 8 subnets. The number of usable host IDs is 30 for all 8 subnets. I list below 8 subnets’ network ID,host ID range, and broadcast ID in the order.
#1: 192.168.4.0, 192.168.4.1-192.168.4.30, 192.168.4.31
#2: 192.168.4.32, 192.168.4.33-192.168.4.62, 192.168.4.63
#3: 192.168.4.64, 192.168.4.65-192.168.4.94, 192.168.4.95
#4: 192.168.4.96, 192.168.4.97-192.168.4. 126, 192.168.4.127
#5: 192.168.4.128, 192.168.4.129-192.168.4. 158, 192.168.4.159
#6: 192.168.4.160 , 192.168.4.161-192.168.4. 190, 192.168.4.191
#7: 192.168.4.192, 192.168.4.193-192.168.4. 222, 192.168.4.223
#8: 192.168.4.224, 192.168.4.225-192.168.4. 254, 192.168.4.255
Subnetting is one of the most important concepts in networking. It is the process of dividing a large network into smaller sub-networks that are easier to manage and maintain. Although subnetting may seem daunting at first, it is actually a simple process that can be easily understood by anyone who is willing to learn.
To start, let us define what a subnet is. A subnet is simply a smaller part of a larger network. It can be created by dividing the network's IP address range and assigning a subset of this range to each subnet. Each subnet will then have its own network address, which is used to identify the subnet, and a broadcast address, which is used to send messages to all hosts in the subnet.
Now, let us look at how subnetting works. The first step is to choose an IP address range for the network. This range should be large enough to accommodate all the hosts on the network while providing room for future growth. Once the range has been chosen, the next step is to divide it into smaller subnets.
This is done by borrowing bits from the host portion of the IP address and using them to create the subnet mask. The subnet mask is a 32-bit number that is used to determine the network and host portions of the IP address. By changing the subnet mask, we can create different subnets within the same IP address range.
For example, if we have an IP address range of 192.168.0.0/24, this means that there are 24 bits for the network portion of the address and 8 bits for the host portion. If we want to divide this network into two smaller subnets, we could create a new subnet mask of 255.255.255.128, which would allocate one subnet to the range 192.168.0.0/25 and the other to 192.168.0.128/25. Each subnet would have a maximum of 126 hosts.
Subnetting can also be used to improve network security by isolating different departments or groups within the same network. By dividing the network into smaller subnets, we can apply different security policies to each subnet and control access to sensitive resources more effectively.
In conclusion, subnetting is a simple concept that can greatly improve network management and security. By dividing a large network into smaller subnets, we can improve performance, reduce network congestion, and make it easier to manage and maintain. With a little practice, anyone can master subnetting and become a more effective network administrator.
