Subnetting Homework - Isaiah-River/NET-330-01-Network-Design GitHub Wiki
In this assignment, I did some research on the benefits of subnetting, gained more experience putting together subnetting IP tables, and answered various other questions about subnetting.
- Researching the benefits of subnetting
- Completing subnetting IP tables
- Determining valid IP addresses
- Determining if a router is required for two IP addresses to communicate based on their IP and subnet mask
The prompt:
Do some research on the following question: Why is subnetting important/valuable?
List THREE reasons as bullet points, with a sentence or two explaining each. Cite the source of each point.
My answer:
Improving network efficiency -
There are several ways that subnetting can help to improve network efficiency. Splitting traffic from one large network into several smaller networks can help reduce the number of hosts and broadcast packets transferred on one network. This can help reduce overall network congestion and avoid issues with internetwork switching.
Boosting network security -
Subnetting a network can aid in isolating sensitive devices and allows one to restrict access to particular sections of the network. This allows for better control over data flow and makes it easier to implement security policies, such as firewall rules or access control lists, between different subnets.
Better management -
Another benefit of subnetting is that it can aid in management. Isolating various parts of your network can help determine which machines or areas need attention when issues arise. Subnetting is also an important tool in designing, planning, and managing IP address allocations within networks.
Works cited:
Nuggets, CBT. “5 Subnetting Benefits.” Network Computing, 10 Apr. 2024, www.networkcomputing.com/ip-subnetting/5-subnetting-benefits.
The prompt:
You are designing the network for a small hospital. Your internal address network is 10.16.0.0/16
Please complete the following table, using the subnet mask that is greater but as close to the host requirements as possible.
Host Ranges are the available host IPs for that network - e.g. 10.16.2.1 to 10.16.3.254
VLAN Host Needed Network Subnet Mask Host Ranges Admin 200 Care 400 Psych 200 Guest 600
My answer:
VLAN Host Needed Network Subnet Mask Host Ranges Admin 200 10.16.6.0 255.255.255.0 10.16.6.1 - 10.16.6.254 Care 400 10.16.4.0 255.255.254.0 10.16.4.1 - 10.16.5.254 Psych 200 10.16.7.0 255.255.255.0 10.16.7.1 - 10.16.7.254 Guest 600 10.16.0.0 255.255.252.0 10.16.0.1 - 10.16.3.254
The prompt:
Is this a valid IP Address?
153.104.7.255/24
Explain why or why not
My answer:
This is not a valid IP address. This is because the network has a /24 netmask. This means that the first 24 bits represent the network portion of the address, and the last 8 bits are the host address. This means that the reserved broadcast address for the 153.104.7.0 network is 153.103.7.255, making it not a valid IP for hosts.
The prompt:
Is a router needed for these two IPs to communicate?
153.104.21.200/22
153.104.23.100/22
Explain why or why not
My answer:
No, a router is not needed for these IP addresses to communicate. Because the network uses a /22 netmask, the first 22 bytes represent the network address, and the last 10 bits represent the host ID. This means the network address is 153.104.20.0 (153.104.21.200 = 10011001.01101000.00010101.11001000 - First 22 bytes = 153.104.20.0), and the broadcast address is 153.104.23.255. This means that the two addresses 153.104.21.200 and 153.104.23.100 fall within this same subnet and therefore they can communicate without the need of a router.
The prompt:
Is this a valid IP Address?
153.104.27.1/23
Explain why or why not
My answer:
Yes, this is a valid IP address. This is because the /23 netmask, meaning the first 23 bits of the address is the network address. This means that the network address is 153.104.26.0 and the broadcast address would be 153.104.27.255. The address 153.104.27.1 is within this range making it a valid IP address.
The prompt:
Is a router needed for these two IPs to communicate?
153.104.21.200/27
153.104.33.100/27
Explain why or why not
My answer:
Yes, a router is needed for these two IP addresses to communicate. Because a /27 subnet mask is used for each of these IP addresses, it means that the first 27 bits represent the network address. This means the network address for the first address is 153.104.21.192 (153.104.21.200 = 10011001.01101000.00010101.11001000 - First 27 bytes = 153.104.21.192), and the broadcast address is 153.104.21.223. The second address (153.104.33.100) is not within this range, which means that they are on separate subnets, therefore these addresses will not be able to communicate without a router.
My submission can be viewed here.
