Subnetting
A.
Subnetting
Kelas A
Subnet Mask
|
Biner
|
Nilai CIDR
|
255.0.0.0
|
11111111.00000000.00000000.00000000
|
/8
|
255.128.0.0
|
11111111.10000000.00000000.00000000
|
/9
|
255.192.0.0
|
11111111.11000000.00000000.00000000
|
/10
|
255.224.0.0
|
11111111.11100000.00000000.00000000
|
/11
|
255.240.0.0
|
11111111.11110000.00000000.00000000
|
/12
|
255.248.0.0
|
11111111.11111000.00000000.00000000
|
/13
|
255.252.0.0
|
11111111.11111100.00000000.00000000
|
/14
|
255.254.0.0
|
11111111.11111110.00000000.00000000
|
/15
|
Perhitungan:
1.
Nilai CIDR: /8
a.
Jumlah Network/Broadcast = 2x = 20 = 1 network/broadcast
b.
Jumlah Host = 2y - 2 = 224 – 2 = 16.777.214 host
2.
Nilai CIDR: /9
a.
Jumlah Network/Broadcast = 2x = 21 = 2 network/broadcast
b.
Jumlah Host = 2y - 2 = 223 – 2 = 8.388.606 host
3.
Nilai CIDR: /10
a.
Jumlah Network/Broadcast = 2x = 22 = 4 network/broadcast
b.
Jumlah Host = 2y - 2 = 222 – 2 = 4.194.302 host
4.
Nilai CIDR: /11
a.
Jumlah Network/Broadcast = 2x = 23 = 8 network/broadcast
b.
Jumlah Host = 2y - 2 = 221 – 2 = 2.097.150 host
5.
Nilai CIDR: /12
a.
Jumlah Network/Broadcast = 2x = 24 = 16 network/broadcast
b.
Jumlah Host = 2y - 2 = 220 – 2 = 1.048.574 host
6.
Nilai CIDR: /13
a.
Jumlah Network/Broadcast = 2x = 25 = 32 network/broadcast
b.
Jumlah Host = 2y - 2 = 219 – 2 = 524.286 host
7.
Nilai CIDR: /14
a.
Jumlah Network/Broadcast = 2x = 26 = 64 network/broadcast
b.
Jumlah Host = 2y - 2 = 218 – 2 = 262.142 host
8.
Nilai CIDR: /15
a. Jumlah Network/Broadcast = 2x
= 27 = 128 network/broadcast
b. Jumlah Host = 2y - 2 = 217
– 2 = 131.070 host
B.
Subnetting Kelas B
Subnet Mask
|
Biner
|
Nilai CIDR
|
255.255.0.0
|
11111111.1111111.00000000.00000000
|
/16
|
255.255.128.0
|
11111111.1111111.10000000.00000000
|
/17
|
255.255.192.0
|
11111111.1111111.11000000.00000000
|
/18
|
255.255.224.0
|
11111111.1111111.11100000.00000000
|
/19
|
255.255.240.0
|
11111111.1111111.11110000.00000000
|
/20
|
255.255.248.0
|
11111111.1111111.11111000.00000000
|
/21
|
255.255.252.0
|
11111111.1111111.11111100.00000000
|
/22
|
255.255.254.0
|
11111111.1111111.11111110.00000000
|
/23
|
1.
Nilai CIDR: /16
a. Jumlah Network/Broadcast = 2x
= 20 = 1 network/broadcast
b. Jumlah Host = 2y - 2 = 216
– 2 = 65534 host
2.
Nilai CIDR: /17
a.
Jumlah Network/Broadcast = 2x = 21 = 2 network/broadcast
b.
Jumlah Host = 2y - 2 = 215 – 2 = 32766 host
3.
Nilai CIDR: /18
a. Jumlah Network/Broadcast = 2x
= 22 = 4 network/broadcast
b. Jumlah Host = 2y - 2 = 214
– 2 = 16382 host
4.
Nilai CIDR: /19
a. Jumlah Network/Broadcast = 2x
= 23 = 8 network/broadcast
b. Jumlah Host = 2y - 2 = 213
– 2 = 8190 host
5.
Nilai CIDR: /20
a. Jumlah Network/Broadcast = 2x
= 24 = 16 network/broadcast
b. Jumlah Host = 2y - 2 = 212
– 2 = 4094 host
6.
Nilai CIDR: /21
a. Jumlah Network/Broadcast = 2x
= 25 = 32 network/broadcast
b. Jumlah Host = 2y - 2 = 211
– 2 = 2046 host
7.
Nilai CIDR: /22
a. Jumlah Network/Broadcast = 2x
= 26 = 64 network/broadcast
b. Jumlah Host = 2y - 2 = 210
– 2 = 1022 host
8.
Nilai CIDR: /23
a. Jumlah Network/Broadcast = 2x
= 27 = 128 network/broadcast
b. Jumlah Host = 2y - 2 = 29
– 2 = 510 host
C.
Subnetting Kelas C
Subnet Mask
|
Biner
|
Nilai CIDR
|
255.255.255.0
|
11111111.1111111.00000000.00000000
|
/24
|
255.255.255.128
|
11111111.1111111.1111111.10000000
|
/25
|
255.255.255.192
|
11111111.1111111.1111111.11000000
|
/26
|
255.255.255.224
|
11111111.1111111.1111111.11100000
|
/27
|
255.255.255.240
|
11111111.1111111.1111111.11110000
|
/28
|
255.255.255.248
|
11111111.1111111.1111111.11111000
|
/29
|
255.255.255.252
|
11111111.1111111.1111111.11111100
|
/30
|
1.
Nilai CIDR: /24
a.
Jumlah Network/Broadcast = 2x = 20 = 1 network/broadcast
b.
Jumlah Host = 2y - 2 = 28 – 2 = 254 host
2.
Nilai CIDR: /25
a. Jumlah Network/Broadcast = 2x
= 21 = 2 network/broadcast
b. Jumlah Host = 2y - 2 = 27
– 2 = 126 host
3.
Nilai CIDR: /26
a. Jumlah Network/Broadcast = 2x
= 22 = 4 network/broadcast
b. Jumlah Host = 2y - 2 = 26
– 2 = 62 host
4.
Nilai CIDR: /27
a. Jumlah Network/Broadcast = 2x
= 23 = 8 network/broadcast
b. Jumlah Host = 2y - 2 = 25
– 2 = 30 host
5.
Nilai CIDR: /28
a. Jumlah Network/Broadcast = 2x
= 24 = 16 network/broadcast
b. Jumlah Host = 2y - 2 = 24
– 2 = 14 host
6.
Nilai CIDR: /29
a. Jumlah Network/Broadcast = 2x
= 25 = 32 network/broadcast
b. Jumlah Host = 2y - 2 = 23
– 2 = 6 host
7.
Nilai CIDR: /30
a. Jumlah Network/Broadcast = 2x
= 26 = 64 network/broadcast
b. Jumlah Host = 2y - 2 = 22
– 2 = 2 host
Jumlah network dengan jumlah
broadcast harus sama, sehingga hasilnya sebagai berikut:
Nilai CIDR
|
Nilai Subnet Mask
|
Jumlah Network
|
Jumlah Host yang Valid
|
Jumlah Broadcast
|
/8
|
255.0.0.0
|
1
|
16777214
|
1
|
/9
|
255.128.0.0
|
2
|
8388606
|
2
|
/10
|
255.192.0.0
|
4
|
4194302
|
4
|
/11
|
255.224.0.0
|
8
|
2097150
|
8
|
/12
|
255.240.0.0
|
16
|
1048574
|
16
|
/13
|
255.248.0.0
|
32
|
524286
|
32
|
/14
|
255.252.0.0
|
64
|
262142
|
64
|
/15
|
255.254.0.0
|
128
|
131070
|
128
|
/16
|
255.255.0.0
|
1
|
65534
|
1
|
/17
|
255.255.128.0
|
2
|
32766
|
2
|
/18
|
255.255.192.0
|
4
|
16382
|
4
|
/19
|
255.255.224.0
|
8
|
8190
|
8
|
/20
|
255.255.240.0
|
16
|
4094
|
16
|
/21
|
255.255.248.0
|
32
|
2046
|
32
|
/22
|
255.255.252.0
|
64
|
1022
|
64
|
/23
|
255.255.254.0
|
128
|
510
|
128
|
/24
|
255.255.255.0
|
1
|
254
|
1
|
/25
|
255.255.255.128
|
2
|
126
|
2
|
/26
|
255.255.255.192
|
4
|
62
|
4
|
/27
|
255.255.255.224
|
8
|
30
|
8
|
/28
|
255.255.255.240
|
16
|
14
|
16
|
/29
|
255.255.255.248
|
32
|
6
|
32
|
/30
|
255.255.255.252
|
64
|
2
|
64
|
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