IP Kalkulator

ipcalc adalah alat bantu untuk mencari alamat broadcast, network dan host berdasarkan alamat ip dan netmask.

Instalasi ipcalc:

#apt-get install ipcalc

Contoh:

#ipcalc 192.168.100.4/24
Address:   192.168.100.4        11000000.10101000.01100100. 00000100
Netmask:   255.255.255.0 = 24   11111111.11111111.11111111. 00000000
Wildcard:  0.0.0.255            00000000.00000000.00000000. 11111111

Network:   192.168.100.0/24     11000000.10101000.01100100. 00000000
HostMin:   192.168.100.1        11000000.10101000.01100100. 00000001
HostMax:   192.168.100.254      11000000.10101000.01100100. 11111110
Broadcast: 192.168.100.255      11000000.10101000.01100100. 11111111
Hosts/Net: 254                   Class C, Private Internet

Menghitung subnet:

# ipcalc 192.168.100.4 255.255.255.0 255.255.255.128
Address:   192.168.100.4        11000000.10101000.01100100. 00000100
Netmask:   255.255.255.0 = 24   11111111.11111111.11111111. 00000000
Wildcard:  0.0.0.255            00000000.00000000.00000000. 11111111
=>
Network:   192.168.100.0/24     11000000.10101000.01100100. 00000000
HostMin:   192.168.100.1        11000000.10101000.01100100. 00000001
HostMax:   192.168.100.254      11000000.10101000.01100100. 11111110
Broadcast: 192.168.100.255      11000000.10101000.01100100. 11111111
Hosts/Net: 254                   Class C, Private Internet

Subnets after transition from /24 to /25

Netmask:   255.255.255.128 = 25 11111111.11111111.11111111.1 0000000
Wildcard:  0.0.0.127            00000000.00000000.00000000.0 1111111

1.
Network:   192.168.100.0/25     11000000.10101000.01100100.0 0000000
HostMin:   192.168.100.1        11000000.10101000.01100100.0 0000001
HostMax:   192.168.100.126      11000000.10101000.01100100.0 1111110
Broadcast: 192.168.100.127      11000000.10101000.01100100.0 1111111
Hosts/Net: 126                   Class C, Private Internet

2.
Network:   192.168.100.128/25   11000000.10101000.01100100.1 0000000
HostMin:   192.168.100.129      11000000.10101000.01100100.1 0000001
HostMax:   192.168.100.254      11000000.10101000.01100100.1 1111110
Broadcast: 192.168.100.255      11000000.10101000.01100100.1 1111111
Hosts/Net: 126                   Class C, Private Internet

Subnets:   2
Hosts:     252

Link:
ipcalc