Columbus State University (CSU) has an Internet IP address in CIDR format 168.26.196.0/22. If CSU plans...
Columbus State University (CSU) has an Internet IP address in CIDR format 168.26.196.0/22. If CSU plans to design 8 subnets under this assigned IP block addresses. Please write out the 8 subnets IP addresses respectively in CIDR format (a.b.c.d/x) with decimal number. (No proof is needed)
Homework Answers
Given,
Major Network address: 168.26.196.0/22 10101000.00011010.110001 00.00000000
Number of subnets required = 8.
Always host id bits are taken for subnetting.
Number of host id bits required = 
= 
Subnet mask = 22 + 3 =/25
Subnet 1:
Network: 168.26.196.0/25 ===>
10101000.00011010.11000100.0 0000000
Broadcast: 168.26.196.127==>
10101000.00011010.11000100.0 1111111
HostMin: 168.26.196.1 ==>
10101000.00011010.11000100.0 0000001
HostMax: 168.26.196.126 ==>
10101000.00011010.11000100.0 1111110
Hosts/Net: 126
Subnet 2:
Network: 168.26.196.128/25 ==>
10101000.00011010.11000100.1 0000000
Broadcast: 168.26.196.255 ==>
10101000.00011010.11000100.1 1111111
HostMin: 168.26.196.129 ==>
10101000.00011010.11000100.1 0000001
HostMax: 168.26.196.254 ==>
10101000.00011010.11000100.1 1111110
Hosts/Net: 126
Subnet 3:
Network: 168.26.197.0/25 ==>
10101000.00011010.11000101.0 0000000
Broadcast: 168.26.197.127 ==>
10101000.00011010.11000101.0 1111111
HostMin: 168.26.197.1 ==>
10101000.00011010.11000101.0 0000001
HostMax: 168.26.197.126 ==>
10101000.00011010.11000101.0 1111110
Hosts/Net: 126
Subnet 4:
Network: 168.26.197.128/25 ==>
10101000.00011010.11000101.1 0000000
Broadcast: 168.26.197.255 ==>
10101000.00011010.11000101.1 1111111
HostMin: 168.26.197.129 ==>
10101000.00011010.11000101.1 0000001
HostMax: 168.26.197.254 ==>
10101000.00011010.11000101.1 1111110
Hosts/Net: 126
Subnet 5:
Network:
168.26.198.0/25 ==>
10101000.00011010.11000110.0 0000000
Broadcast: 168.26.198.127 ==>
10101000.00011010.11000110.0 1111111
HostMin: 168.26.198.1 ==>
10101000.00011010.11000110.0 0000001
HostMax: 168.26.198.126 ==>
10101000.00011010.11000110.0 1111110
Hosts/Net: 126
Subnet 6:
Network: 168.26.198.128/25 ==>
10101000.00011010.11000110.1 0000000
Broadcast: 168.26.198.255 ==>
10101000.00011010.11000110.1 1111111
HostMin: 168.26.198.129 ==>
10101000.00011010.11000110.1 0000001
HostMax: 168.26.198.254 ==>
10101000.00011010.11000110.1 1111110
Hosts/Net: 126
Subnet 7:
Network: 168.26.199.0/25 ==>
10101000.00011010.11000111.0 0000000
Broadcast: 168.26.199.127 ==>
10101000.00011010.11000111.0 1111111
HostMin: 168.26.199.1 ==>
10101000.00011010.11000111.0 0000001
HostMax: 168.26.199.126 ==>
10101000.00011010.11000111.0 1111110
Hosts/Net: 126
Subnet 8:
Network: 168.26.199.128/25 ==>
10101000.00011010.11000111.1 0000000
Broadcast: 168.26.199.255 ==>
10101000.00011010.11000111.1 1111111
HostMin: 168.26.199.129 ==>
10101000.00011010.11000111.1 0000001
HostMax: 168.26.199.254 ==>
10101000.00011010.11000111.1 1111110
Hosts/Net: 126
Subnet bits are marked in bold.
Summary:
| Subnet # | Subnet Address |
| 1 | 168.26.196.0/25 |
| 2 | 168.26.196.128/25 |
| 3 | 168.26.197.0/25 |
| 4 | 168.26.197.128/25 |
| 5 | 168.26.198.0/25 |
| 6 | 168.26.198.128/25 |
| 7 | 168.26.199.0/25 |
| 8 | 168.26.199.128/25 |
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