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- Subnet Calculator Example
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- Given the host IP address (Class A, Class B, Class C) of a network, Subnet Calculator
- calculates the subnet details according to the number of subnet bits set.
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- Let us assume that we have a Host IP address as 204.54.40.130 and wish to have 4 subnets.
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- We can use the Subnet Calculator component and go through the following steps:
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- 1. Input the Host IP address and increment the number of subnet bits to 2. Subnet Calculator uses
- this information to calculate the subnets and other related information.
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- 2. Press Refresh to calculate the subnet information. Subnet Calculator updates the fields with
- the calculated data.
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- 3. Under "Subnet Details", you can check the "Subnets" field to verify that the number of subnets calculated
- are indeed 4.
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- 4. The number of "Hosts per Subnet" are calculated, and in this case, every subnet has 62 hosts. The
- "Total Hosts" for 4 subnets is 248.
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- 5. The "Subnet Mask" is calculated to be 255.255.255.192.
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- 6. The bitwise mapping of the subnet mask is given in the "Subnet Format", where N represents
- the network bits, S represents the subnet bits and H represents the host bits.
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- 7. Under "Host Details" you can find the "Subnet Mask", the "Network Address" and the "Broadcast Address" of the subnet to
- which the Host IP address belongs. In this case, the subnet number is 2, the Class C mask is 255.255.255.0,
- the Network Address is calculated to be 202.54.40.128 and the broadcast address is 202.54.40.191.
- This information is available in decimal as well as hexadecimal format.
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- 8. The "Network/Broadcast list" displays subnet details such as the number, Network Address and Broadcast
- Address. You can view the Network and Broadcast address for the 4 Subnets, in this case.
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