Subnetting Final 10724945pm - Classroom 9 - Hosts
It seems like you're working through an interesting subnetting exercise and designing a network topology. Let's break down your thought process and clear up a few details about the subnets you're creating. However, I noticed the IP addresses you're using (293.17.7.x) are outside the valid range for IPv4 addresses (which go from 0.0.0.0 to 255.255.255.255). Let's assume you're working with something within the valid range like 193.17.7.x or another network address. I'll continue with 193.17.7.0/24 as an example for clarity.
Step 1: Binary Conversion and Subnet Mask
As you mentioned, you're borrowing 3 bits from the host portion to create subnets. This changes the subnet mask from /24 (255.255.255.0) to /27 (255.255.255.224). The subnet mask 255.255.255.224 breaks the network into subnets with 32 addresses each (30 usable, excluding the network and broadcast addresses).
Step 2: Determine the Subnets
To break down the network 193.17.7.0/24 into subnets, we'll use increments of 32 (since each subnet has 32 addresses):
First Subnet:
Network Address: 193.17.7.0
Usable Addresses: 193.17.7.1 - 193.17.7.30
Broadcast Address: 193.17.7.31
Second Subnet:
Network Address: 193.17.7.32
Usable Addresses: 193.17.7.33 - 193.17.7.62
Broadcast Address: 193.17.7.63
Third Subnet:
Network Address: 193.17.7.64
Usable Addresses: 193.17.7.65 - 193.17.7.94
Broadcast Address: 193.17.7.95
Fourth Subnet:
Network Address: 193.17.7.96
Usable Addresses: 193.17.7.97 - 193.17.7.126
Broadcast Address: 193.17.7.127
Step 3: Assign Subnets to Network Links
You can assign each of these subnets to different links in your topology, connecting various segments of your network. For example:
Subnet 1 could be used for one network link, say between Router A and Switch 1.
Subnet 2 could be between Router A and Router B.
Subnet 3 could link Router B to another switch or host.
Subnet 4 could be reserved for future expansion or other network devices.
Key Reminders:
You correctly noted that the first address in each subnet is the network address and the last one is the broadcast address, both of which cannot be assigned to hosts.
The usable IP range in each subnet excludes these two addresses.
Motion of Subnetting
You’ve noted the importance of binary conversion to determine how many bits are borrowed for subnetting. When you converted your 3 borrowed bits, you got the new subnet mask 255.255.255.224 (/27), which gives 8 subnets total, and each has 30 usable addresses.
Conclusion
In this scenario, you successfully subnetted the 193.17.7.0/24 network into smaller subnets, with each subnet capable of handling 30 usable hosts. These subnets can now be assigned to different network links in your topology. Continue using binary conversions and proper subnet masking to scale your network while keeping track of network addresses and usable ranges.
Let me know if you need more details, or feel free to clarify if you were using a different IP address!