計算機相關網段計算

### 規則

ip:       00001010.00010101.11100000.00000000  10.21.224.0

子網掩碼:  11111111.11111111.11111100.00000000   255.255.252.0

網絡標識: 11111111.11111111.11100000.00000000   10.21.224.0


ip:         00001010.00010101.11100000.00000000  10.21.224.0

子網掩碼取反: 00000000.00000000.00000011.11111111   0.0.3.255

廣播地址:     00001010.00010101.11100011.11111111  10.21.227.255


ip地址段      10.21.224.1~10.21.227.254

案例1、172.19.208.0/20

ip:          10101100.00010011.11010000.00000000

子網掩碼:     11111111.1111111.11110000.00000000

網絡標識:     10101100.00010011.11010000.00000000 (172.19.208.0)

ip:          10101100.00010011.11010000.00000000

子網掩碼取反:  00000000.00000000.00001111.11111111

廣播地址:     10101100.00010011.11011111.11111111 (172.19.223.255)



案例2、172.19.96.0/20


ip:          10101100.00010011.01100000.00000000

子網掩碼:     11111111.1111111.11110000.00000000

網絡標識:     10101100.00010011.01100000.00000000 (172.19.96.0)

ip:          10101100.00010011.01100000.00000000

子網掩碼取反:  00000000.00000000.00001111.11111111

廣播地址:     10101100.00010011.01101111.11111111 (172.19.111.255)


案例3、172.19.120.0/24


ip:          10101100.00010011.01111000.00000000

子網掩碼:     11111111.1111111.11111100.00000000

網絡標識:     10101100.00010011.01111000.00000000 (172.19.120.0)

ip:          10101100.00010011.01111000.00000000

子網掩碼取反:  00000000.00000000.00000011.11111111

廣播地址:     10101100.00010011.01111011.11111111 (172.19.123.255)