VLSM

Misalnya kita punya Network: 192.168.10.0/25 dan kebutuhan:

• Subnet A = 60 host

• Subnet B = 24 host

• Subnet C = 12 host

• Subnet D = 5 host

Buat solusinya dengan VLSM menggunakan Diagram Visual — Alur Perhitungan VLSM.

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Solusi dengan VLSM:

Subnet A (60 host)

→ Butuh /26 (64 alamat, 62 host usable)
→ Hasil subnet: 192.168.10.0/26

• Network Address : 192.168.10.0

• Range Alamat : 192.168.10.0 – 192.168.10.63

• Usable Host : 192.168.10.1 – 192.168.10.62

• Broadcast : 192.168.10.63

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Subnet B (24 host)

→ Butuh /27 (32 alamat, 30 host usable)
→ Hasil subnet: 192.168.10.64/27

• Network Address : 192.168.10.64

• Range Alamat : 192.168.10.64 – 192.168.10.95

• Usable Host : 192.168.10.65 – 192.168.10.94

• Broadcast : 192.168.10.95

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Subnet C (12 host)

→ Butuh /28 (16 alamat, 14 host usable)
→ Hasil subnet: 192.168.10.96/28

• Network Address : 192.168.10.96

• Range Alamat : 192.168.10.96 – 192.168.10.111

• Usable Host : 192.168.10.97 – 192.168.10.110

• Broadcast : 192.168.10.111

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Subnet D (5 host)

→ Butuh /29 (8 alamat, 6 host usable)
→ Hasil subnet: 192.168.10.112/29

• Network Address : 192.168.10.112

• Range Alamat : 192.168.10.112 – 192.168.10.119

• Usable Host : 192.168.10.113 – 192.168.10.118

• Broadcast : 192.168.10.119

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Sisa / Cadangan

Alamat sisa dari jaringan:
192.168.10.120 – 192.168.10.127 (total 8 alamat)
→ dapat digunakan sebagai subnet /29 tambahan atau untuk cadangan.