1. 192.168.1.0 255.255.255.128 划分为4个子网
1100 0000.1010 1000.0000 0001.0000 0000
1111 1111.1111 1111.1111 1111.1110 0000
192.168.1.0 /255.255.255.224 192.168.1.0 -192.168.1.30
192.168.1.32/27 192.168.1.33 -192.168.1.62
192.168.1.64/27 192.168.1.65 -192.168.1.94
192.168.1.96/27 192.168.1.97 -192.168.1.126
2. 172.16.10.0 255.255.254.0 划分为4个子网
1010 1100.0001 0000.0000 1010.0000 0000
1111 1111.1111 1111. 1111 1111.1000 0000
172.16.10.0 /255.255.255.128 172.16.10.1-172.16.10.126
172.16.10.128/25 172.16.10.129-172.16.10.254
172.16.11.0/25 172.16.11.1-172.16.11.126
172.16.11.128/25 172.16.11.129-172.16.11.254
3. 201.1.0.0 255.255.255.0 划分为2个子网
1100 1001.0000 0001.0000 0000.0000 0000
1111 1111.1111 1111.1111 1111.1000 0000
201.1.0.0/255.255.255.128 201.1.0.1-201.1.0.126
1100 1001.0000 0001.0000 0000.1000 0000
1111 1111.1111 1111.1111 1111.1000 0000
201.1.0.128/25 201.1.0.129-201.1.0.254
4. 10.0.20.0 255.255.254.0 划分为8个子网
0000 1010.0000 0000.0001 0100.0000 0000
1111 1111.1111 1111.1111 1111.1100 0000
10.0.20.0/255.255.255.192 10.0.20.1-10.0.20.62
10.0.20.64/26 10.0.20.65-10.0.20.126
10.0.20.128/26 10.0.20.129-10.0.20.190
10.0.20.192./26 10.0.20.193-10.0.20.254
10.0.21.0/26 10.0.21.1-10.0.21.62
10.0.21.64/26 10.0.21.65-10.0.21.126
10.0.21.128/26 10.0.21.129-10.0.21.190
10.0.21.192/26 10.0.21.193-10.0.21.254
5. 202.1.0.0 255.255.254.0 划分为4个子网
1100 1010.0000 0010.0000 0000.0000 0000
1111 1111.1111 1111.1111 1111.1000 0000
202.1.0.0/255.255.255.128 202.1.0.1-202.1.0.126
202.1.0.128/25 202.1.0.129-202.1.0.254
202.1.1.0/25 202.1.1.1-202.1.1.126
202.1.1.128 /25 202.1.1.129-202.1.1.254
6. 202.16.17.0 255.255.255.192 划分为4个子网
1100 1010.0001 0000.0001 0001.0000 0000
1111 1111.1111 1111.1111 1111.1111 0000
202.16.17.0 /255.255.255.240 202.16.17.1-202.16.17.14
202.16.17.16/28 202.16.17.17-202.16.17.30
202.16.17.32/28 202.16.17.33-202.16.17.46
202.16.17.48/28 202.16.17.49-202.16.17.62
7. 10.0.0.0 255.255.0.0 划分为4个子网
0000 1010.0000 0000.0000 0000.0000 0000
1111 1111.1111 1111.1100 0000.0000 0000
10.0.0.0 /255.255.192.0 10.0.0.1-10.0.63.254
10.0.64.0/18 10.0.64.1-10.0.127.254
10.0.128.0/18 10.0.128.1-10.0.191.254
10.0.192.0/18 10.0.192.1-10.0.255.254
8. 213.19.40.0 255.255.248.0划分为4个子网
1100 1101.0001 0011.0010 1000.0000 0000
1111 1111.1111 1111.1111 1110.0000 0000
213.19.40.0/255.255.254.0 213.19.40.1- 213.19.41.254
213.19.42.0/23 213.19.42.1- 213.19.43.254
213.19.44.0/23 213.19.44.1- 213.19.45.254
213.19.46.0/23 213.19.46.1- 213.19.47.254
9. 192.168.20.0/24 192.168.21.0/24 192.168.22.0/24 192.168.23.0/24 192.168.24.0/24 进行网络汇总
1111 1111.1111 1111.1111 1111.0000 0000(子网掩码)
1100 0000.1010 1000.0001 0100.0000 0000
1100 0000.1010 1000.0001 0101.0000 0000
1100 0000.1010 1000.0001 0110.0000 0000
1100 0000.1010 1000.0001 0111.0000 0000
1100 0000.1010 1000.0001 1000.0000 0000
汇总:192.168.16.0/20
10. 100.1.16.0/24 100.1.17.0/24 100.1.18.0/24 100.1.19.0/24 网络进行汇总
1111 1111.1111 1111.1111 1111.0000 0000(子网掩码)
0110 0100.0000 0001.0001 0000.0000 0000
0110 0100.0000 0001.0001 0001.0000 0000
0110 0100.0000 0001.0001 0010.0000 0000
0110 0100.0000 0001.0001 0011.0000 0000
汇总:100.1.16.0/22