Subnetting
1. Pengertian
Subnetting
adalah metode atau teknik membuat net id dengan cara mengorbankan bit host.
Karena IPv4 pengalamatan sangat terbatas dengan makin banyaknya user jaringan
maka dibuat metode subnetting.
2. Kegunaan Subnetting
- Untuk menentukan batas network
ID dalam suatu subnet
- Memperbanyak jumlah network
(LAN)
- Mengurangi jumlah host dalam
satu network
- Tujuan lain dari subnetteing
yang tidak kalah penting adalah untuk mengurangi tingkat konggesti
(gangguan/tabrakan) lalulintas data dalam suatu network
- Efisiensi pengguanan IP Address
- Pendelegasian kekuasan untuk
pengaturan
- Mempermudah manajemen jaringan
- Mengatasi masalah perbedaan hardware dan topologi fisik
jaringan
3. Menghitung Subnetting
1. Menghitung jumlah subnet
= 2N
“N” yaitu jumlah bit network baru.
2. Menghitung host per subnet
= 2M – 2
“M” yaitu jumlah bit host yang masih utuh.
3. Menentukan Range blok
= 256 – nilai decimal dari bit network baru
Latihan
192.168.10.0/30
Host yang dikorbankan = 6
Maka, 11111111.11111111.11111111.11111100
Nilai decimal dari bit network baru = 27 + 26
+ 25 + 24 + 23 +22 = 252
1.
Subnet
= 2N
= 26
= 64
2.
Host per Subnet
= 2M – 2
= 22 – 2
= 2
3.
Range Blok
= 256 - 252
= 4
1
|
2
|
3
|
|
Subnet
|
192.168.10.0
|
192.168.10.4
|
192.168.10.8
|
Host Pertama
|
192.168.10.1
|
192.168.10.5
|
192.168.10.9
|
Host Akhir
|
192.168.10.2
|
192.168.10.6
|
192.168.10.10
|
Broadcast
|
192.168.10.3
|
192.168.10.7
|
192.168.10.11
|
4
|
5
|
6
|
|
Subnet
|
192.168.10.12
|
192.168.10.16
|
192.168.10.20
|
Host Pertama
|
192.168.10.13
|
192.168.10.17
|
192.168.10.21
|
Host Akhir
|
192.168.10.14
|
192.168.10.18
|
192.168.10.22
|
Broadcast
|
192.168.10.15
|
192.168.10.19
|
192.168.10.23
|
7
|
8
|
9
|
|
Subnet
|
192.168.10.24
|
192.168.10.28
|
192.168.10.32
|
Host Pertama
|
192.168.10.25
|
192.168.10.29
|
192.168.10.33
|
Host Akhir
|
192.168.10.26
|
192.168.10.30
|
192.168.10.34
|
Broadcast
|
192.168.10.27
|
192.168.10.31
|
192.168.10.35
|
10
|
11
|
12
|
|
Subnet
|
192.168.10.36
|
192.168.10.40
|
192.168.10.44
|
Host Pertama
|
192.168.10.37
|
192.168.10.41
|
192.168.10.45
|
Host Akhir
|
192.168.10.38
|
192.168.10.42
|
192.168.10.46
|
Broadcast
|
192.168.10.39
|
192.168.10.43
|
192.168.10.47
|
13
|
14
|
15
|
|
Subnet
|
192.168.10.48
|
192.168.10.52
|
192.168.10.56
|
Host Pertama
|
192.168.10.49
|
192.168.10.53
|
192.168.10.57
|
Host Akhir
|
192.168.10.50
|
192.168.10.54
|
192.168.10.58
|
Broadcast
|
192.168.10.51
|
192.168.10.55
|
192.168.10.59
|
16
|
17
|
18
|
|
Subnet
|
192.168.10.60
|
192.168.10.64
|
192.168.10.68
|
Host Pertama
|
192.168.10.61
|
192.168.10.65
|
192.168.10.69
|
Host Akhir
|
192.168.10.62
|
192.168.10.66
|
192.168.10.70
|
Broadcast
|
192.168.10.63
|
192.168.10.67
|
192.168.10.71
|
19
|
20
|
21
|
|
Subnet
|
192.168.10.72
|
192.168.10.76
|
192.168.10.80
|
Host Pertama
|
192.168.10.73
|
192.168.10.77
|
192.168.10.81
|
Host Akhir
|
192.168.10.74
|
192.168.10.78
|
192.168.10.82
|
Broadcast
|
192.168.10.75
|
192.168.10.79
|
192.168.10.83
|
22
|
23
|
24
|
|
Subnet
|
192.168.10.84
|
192.168.10.88
|
192.168.10.92
|
Host Pertama
|
192.168.10.85
|
192.168.10.89
|
192.168.10.93
|
Host Akhir
|
192.168.10.86
|
192.168.10.90
|
192.168.10.94
|
Broadcast
|
192.168.10.87
|
192.168.10.91
|
192.168.10.95
|
25
|
26
|
27
|
|
Subnet
|
192.168.10.96
|
192.168.10.100
|
192.168.10.104
|
Host Pertama
|
192.168.10.97
|
192.168.10.101
|
192.168.10.105
|
Host Akhir
|
192.168.10.98
|
192.168.10.102
|
192.168.10.106
|
Broadcast
|
192.168.10.99
|
192.168.10.103
|
192.168.10.107
|
28
|
29
|
30
|
|
Subnet
|
192.168.10.108
|
192.168.10.112
|
192.168.10.116
|
Host Pertama
|
192.168.10.109
|
192.168.10.113
|
192.168.10.117
|
Host Akhir
|
192.168.10.110
|
192.168.10.114
|
192.168.10.118
|
Broadcast
|
192.168.10.111
|
192.168.10.115
|
192.168.10.119
|
31
|
32
|
33
|
|
Subnet
|
192.168.10.120
|
192.168.10.124
|
192.168.10.128
|
Host Pertama
|
192.168.10.121
|
192.168.10.125
|
192.168.10.129
|
Host Akhir
|
192.168.10.122
|
192.168.10.126
|
192.168.10.130
|
Broadcast
|
192.168.10.123
|
192.168.10.127
|
192.168.10.131
|
34
|
35
|
36
|
|
Subnet
|
192.168.10.132
|
192.168.10.136
|
192.168.10.140
|
Host Pertama
|
192.168.10.133
|
192.168.10.137
|
192.168.10.141
|
Host Akhir
|
192.168.10.134
|
192.168.10.138
|
192.168.10.142
|
Broadcast
|
192.168.10.135
|
192.168.10.139
|
192.168.10.143
|
37
|
38
|
39
|
|
Subnet
|
192.168.10.144
|
192.168.10.148
|
192.168.10.152
|
Host Pertama
|
192.168.10.145
|
192.168.10.149
|
192.168.10.153
|
Host Akhir
|
192.168.10.146
|
192.168.10.150
|
192.168.10.154
|
Broadcast
|
192.168.10.147
|
192.168.10.151
|
192.168.10.155
|
40
|
41
|
42
|
|
Subnet
|
192.168.10.156
|
192.168.10.160
|
192.168.10.164
|
Host Pertama
|
192.168.10.157
|
192.168.10.161
|
192.168.10.165
|
Host Akhir
|
192.168.10.158
|
192.168.10.162
|
192.168.10.166
|
Broadcast
|
192.168.10.159
|
192.168.10.163
|
192.168.10.167
|
43
|
44
|
45
|
|
Subnet
|
192.168.10.168
|
192.168.10.172
|
192.168.10.176
|
Host Pertama
|
192.168.10.169
|
192.168.10.173
|
192.168.10.177
|
Host Akhir
|
192.168.10.170
|
192.168.10.174
|
192.168.10.178
|
Broadcast
|
192.168.10.171
|
192.168.10.175
|
192.168.10.179
|
46
|
47
|
48
|
|
Subnet
|
192.168.10.180
|
192.168.10.184
|
192.168.10.188
|
Host Pertama
|
192.168.10.181
|
192.168.10.185
|
192.168.10.189
|
Host Akhir
|
192.168.10.182
|
192.168.10.186
|
192.168.10.190
|
Broadcast
|
192.168.10.183
|
192.168.10.187
|
192.168.10.191
|
49
|
50
|
51
|
|
Subnet
|
192.168.10.192
|
192.168.10.196
|
192.168.10.200
|
Host Pertama
|
192.168.10.193
|
192.168.10.197
|
192.168.10.201
|
Host Akhir
|
192.168.10.194
|
192.168.10.198
|
192.168.10.202
|
Broadcast
|
192.168.10.195
|
192.168.10.199
|
192.168.10.203
|
52
|
53
|
54
|
|
Subnet
|
192.168.10.204
|
192.168.10.208
|
192.168.10.212
|
Host Pertama
|
192.168.10.205
|
192.168.10.209
|
192.168.10.213
|
Host Akhir
|
192.168.10.206
|
192.168.10.210
|
192.168.10.214
|
Broadcast
|
192.168.10.207
|
192.168.10.211
|
192.168.10.215
|
55
|
56
|
57
|
|
Subnet
|
192.168.10.216
|
192.168.10.220
|
192.168.10.224
|
Host Pertama
|
192.168.10.217
|
192.168.10.221
|
192.168.10.225
|
Host Akhir
|
192.168.10.218
|
192.168.10.222
|
192.168.10.226
|
Broadcast
|
192.168.10.219
|
192.168.10.223
|
192.168.10.227
|
58
|
59
|
60
|
|
Subnet
|
192.168.10.228
|
192.168.10.232
|
192.168.10.236
|
Host Pertama
|
192.168.10.229
|
192.168.10.233
|
192.168.10.237
|
Host Akhir
|
192.168.10.230
|
192.168.10.234
|
192.168.10.238
|
Broadcast
|
192.168.10.231
|
192.168.10.235
|
192.168.10.239
|
61
|
62
|
63
|
|
Subnet
|
192.168.10.240
|
192.168.10.244
|
192.168.10.248
|
Host Pertama
|
192.168.10.241
|
192.168.10.245
|
192.168.10.249
|
Host Akhir
|
192.168.10.242
|
192.168.10.246
|
192.168.10.250
|
Broadcast
|
192.168.10.243
|
192.168.10.247
|
192.168.10.251
|
64
|
|
Subnet
|
192.168.10.252
|
Host Pertama
|
192.168.10.253
|
Host Akhir
|
192.168.10.254
|
Broadcast
|
192.168.10.255
|
Nama : Lutfi Taufany
NIM : 13170818
Kelas : 13.2A.21
Materi : Subnetting
Nama Dosen : Vadlya Maarif, M.Kom
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