Perhitungan Subnetting IP Address 192.168.1.0/29 — Subnet ke-18
Subnetting merupakan teknik pembagian jaringan IP menjadi bagian-bagian yang lebih kecil. Pada kesempatan kali ini, kita membahas perhitungan subnetting untuk IP Address 192.168.1.0/29 dan fokus pada subnet ke-18.
Konsep Dasar Subnetting /29
Notasi /29 menunjukkan 29 bit untuk network, 3 bit untuk host.
IP Address : 192.168.1.0/29
Subnet Mask : 255.255.255.248
Representasi biner subnet mask:
11111111.11111111.11111111.11111000
└──────── 29 bit network ────────┘└3 bit host┘
Rumus-Rumus Penting
Menghitung Jumlah Subnet
Dari /24 → /29 meminjam 5 bit → jumlah subnet = 25 = 32 subnet.
Menghitung Jumlah Host
Bit host = 3 → alamat per subnet = 23 = 8 → host usable = 8 − 2 = 6 (dikurangi 2 untuk network & broadcast)
Menentukan Block Size
Block size = 256 − 248 = 8. Artinya setiap subnet melompat setiap 8 alamat.
Informasi Subnet (Ringkasan)
- Jumlah Total Subnet: 32 subnet
- Host per Subnet: 6 host usable
- Block Size: 8
- Subnet Mask: 255.255.255.248
- Wildcard Mask: 0.0.0.7
Daftar Seluruh Subnet (Rentang Tiap Blok 8)
| No. | Rentang IP |
|---|---|
| 1 | 192.168.1.0 - 192.168.1.7 |
| 2 | 192.168.1.8 - 192.168.1.15 |
| 3 | 192.168.1.16 - 192.168.1.23 |
| 4 | 192.168.1.24 - 192.168.1.31 |
| 5 | 192.168.1.32 - 192.168.1.39 |
| 6 | 192.168.1.40 - 192.168.1.47 |
| 7 | 192.168.1.48 - 192.168.1.55 |
| 8 | 192.168.1.56 - 192.168.1.63 |
| 9 | 192.168.1.64 - 192.168.1.71 |
| 10 | 192.168.1.72 - 192.168.1.79 |
| 11 | 192.168.1.80 - 192.168.1.87 |
| 12 | 192.168.1.88 - 192.168.1.95 |
| 13 | 192.168.1.96 - 192.168.1.103 |
| 14 | 192.168.1.104 - 192.168.1.111 |
| 15 | 192.168.1.112 - 192.168.1.119 |
| 16 | 192.168.1.120 - 192.168.1.127 |
| 17 | 192.168.1.128 - 192.168.1.135 |
| 18 | 192.168.1.136 - 192.168.1.143 ← SUBNET KE-18 |
| 19 | 192.168.1.144 - 192.168.1.151 |
| 20 | 192.168.1.152 - 192.168.1.159 |
| 21 | 192.168.1.160 - 192.168.1.167 |
| 22 | 192.168.1.168 - 192.168.1.175 |
| 23 | 192.168.1.176 - 192.168.1.183 |
| 24 | 192.168.1.184 - 192.168.1.191 |
| 25 | 192.168.1.192 - 192.168.1.199 |
| 26 | 192.168.1.200 - 192.168.1.207 |
| 27 | 192.168.1.208 - 192.168.1.215 |
| 28 | 192.168.1.216 - 192.168.1.223 |
| 29 | 192.168.1.224 - 192.168.1.231 |
| 30 | 192.168.1.232 - 192.168.1.239 |
| 31 | 192.168.1.240 - 192.168.1.247 |
| 32 | 192.168.1.248 - 192.168.1.255 |
Pembahasan Subnet ke-18
Dari daftar di atas, Subnet ke-18 adalah 192.168.1.136 - 192.168.1.143.
Rincian Alamat IP pada Subnet ke-18
| Fungsi | Alamat IP | Keterangan |
|---|---|---|
| Network Address | 192.168.1.136 | Alamat jaringan |
| Host 1 | 192.168.1.137 | Mis. gateway/router |
| Host 2 | 192.168.1.138 | Host |
| Host 3 | 192.168.1.139 | Host |
| Host 4 | 192.168.1.140 | Host |
| Host 5 | 192.168.1.141 | Host |
| Host 6 | 192.168.1.142 | Host |
| Broadcast | 192.168.1.143 | Alamat broadcast |
Range host usable: 192.168.1.137 – 192.168.1.142 (6 alamat)
Ringkasan Subnet ke-18
- Network Address: 192.168.1.136/29
- Subnet Mask: 255.255.255.248
- Range Host: 192.168.1.137 - 192.168.1.142
- Broadcast Address: 192.168.1.143
- Jumlah Host: 6 usable host
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