Subnetting Kelas B CIDR 23 dan 20

Nama Guru : Ricky Chandra, S.Kom.

Mapel : Produktif TKJ

Tanggal : 25 Agustus 2022

SMK Bhakti Persada Kota Bekasi

A. 128.25.0.0 /23

B. 128.25.0.0 /20

Tentukan : 

1. Subnet / Network

2. Blog Subnet

3. Jumlah Host/Subnet

4. Jumlah Host Valid

5. Rentang IP Address berdasarkan Subnet

6. Jumlah Host

JAWABAN

A) 11111111.11111111.11111110.00000000

1. 256 - 2^y = 256 - 2^1 = 256 - 2 = 254

2. 256 - 254 = 2

3. 2^y = 2^9 = 512

4. 2^y - 2 = 2^9 - 2 = 512 - 2 = 510 Host

5. 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250, 252, 254.

6. 2^x = 2^7 = 128 Subnet

~Subnet 1

Network : 128.25.0.0

IP. 1 : 128.25.0.1

IP. End : 128.25.1.254

IP. Broadcast : 128.25.1.255

~Subnet 2

Network : 128.25.2.0

IP. 1 : 128.25.2.1

IP. End : 128.25.3.254

IP. Broadcast : 128.25.3.255

~Subnet 3

Network : 128.25.4.0

IP. 1 : 128.25.4.1

IP. End : 128.25.5.254

IP. Broadcast : 128.25.5.255

~Subnet 4

Network : 128.25.6.0

IP. 1 : 128.25.6.1

IP. End : 128.25.7.254

IP. Broadcast : 128.25.7.255

~Subnet 5

Network : 128.25.8.0

IP. 1 : 128.25.8.1

IP. End : 128.25.9.254

IP. Broadcast : 128.25.9.255

~Subnet 6

Network : 128.25.10.0

IP. 1 : 128.25.10.1

IP. End : 128.25.11.254

IP. Broadcast : 128.25.11.255

B) 11111111.11111111.11110000.00000000

1. 256 - 2^y = 256 - 2^4 = 256 - 16 = 240

2. 256 - 240 = 16

3. 2^y = 2^12 = 4.096

4. 2^y - 2 = 2^12 - 2 = 4.096 - 2 = 4.094 Host

5. 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240.

6. 2^x = 2^4 = 16 Subnet

~Subnet 1

Network : 128.25.0.0

IP. 1 : 128.25.0.1

IP. End : 128.25.15.254

IP. Broadcast : 128.25.15.255

~Subnet 2

Network : 128.25.16.0

IP. 1 : 128.25.16.1

IP. End : 128.25.31.254

IP. Broadcast : 128.25.31.255

~Subnet 3

Network : 128.25.32.0

IP. 1 : 128.25.32.1

IP. End : 128.25.47.254

IP. Broadcast : 128.25.47.255

~Subnet 4

Network : 128.25.48.0

IP. 1 : 128.25.48.1

IP. End : 128.25.63.254

IP. Broadcast : 128.25.63.255

~Subnet 5

Network : 128.25.64.0

IP. 1 : 128.25.64.1

IP. End : 128.25.79.254

IP. Broadcast : 128.25.79.255

~Subnet 6

Network : 128.25.80.0

IP. 1 : 128.25.80.1

IP. End : 128.25.95.254

IP. Broadcast : 128.25.95.255