SUBNET + VLSM

Diketahui sebuah contoh kasus yaitu suatu bank membutuhkan sebuah jaringan subnet untuk masing masing bagiannya sebagai berikut ::

HRD = 10 PC

FINANCIAL = 25 PC

TI = 10 PC

MARKETING= 50 PC



Dimana 172.16.0.0/16

172.16.X.N

X = NO ABSEN KELAS

X=11



Untuk Skema Jaringan nya sebagai berikut :



CARA PERHITUNGANYA :

Marketing
= 50 PC + 1 + 2 = 53 Dimana 1 adalah Router
53 = 110101 Dimana 2 adalah Broadcast 1 + Network 1

• Subnetmask = 11111111.11111111.11111111.11000000 /26
• Netmask = 255.255.255.192
• IP Total = 26 = 64
• Network = 172.16.11.0
• Broadcast = 172.16.11.63
• Gateway = Network + 1

= 172.16.11.1

• IP = 172.16.11.2 – 172.16.11.62

Financial
= 25 PC + 1 + 2 = 28
28 = 11100

• Subnetmask = 11111111.11111111.11111111.11100000 /27
• Netmask = 255.255.255.224
• IP Total = 25 = 32
• Network = 172.16.11.64
• Broadcast = 172.16.11.95
• Gateway = Network + 1

= 172.16.11.65

• IP = 172.16.11.66 – 172.16.11.94

HRD
= 10 PC + 1 + 2 = 13
13 = 1101

• Subnetmask = 11111111.11111111.11111111.11110000 /28
• Netmask = 255.255.255.240
• IP Total = 24 = 16
• Network = 172.16.11.96
• Broadcast = 172.16.11.111
• Gateway = Network + 1

= 172.16.11.97

• IP = 172.16.11.98 – 172.16.11.110

TI
= 10 + 1 + 2 = 13
13 = 1101

• Subnetmask = 11111111.11111111.11111111.11110000 /28
• Netmask = 255.255.255.240
• IP Total = 24 = 16
• Network = 172.16.11.112
• Broadcast = 172.16.11.127
• Gateway = Network + 1

= 172.16.11.113

• IP = 172.16.11.114 – 172.16.11.126

KESIMPULANYA LIHAT TABEL DIBAWAH INI: