Menghitung Subnetting beberapa IP Address

Alamat-Alamat IP yang akan kita cari Alamat IP Subnet-nya adalah:

1.      10.10.10.0 / 28

2.      192.168.10.0 / 26

3.      192.168.10.0 / 30

4.      10.10.10.0 / 29

5.      130.121.10.0 / 27

Jawaban.

1.      10.10.10.0 / 28

255.255.255.0                                                                                 32 – 28 = 4

11111111.11111111.11111111.11110000

      255    .     255     .      255     .      240                                        255 – 240 = 15

16, 32, 48, 64,………240

10.10.10.16                                                             Alamat Broadcast: 10.10.10.15

10.10.10.32                         Alamat IP Subnet                                      10.10.10.31

10.10.10.48                                                                                            10.10.10.47

                                                           

10.10.10.240                                                                                           10.10.10.239

 

10.10.10.16             10.10.10.32                 10.10.10.240

                                                Sampai dengan

10.10.10.31             10.10.10.47                 10.10.10.255

 

2.      192.168.10.0 / 26

255.255.255.0                                                                                 32 – 26 = 6

11111111.11111111.11111111.11000000

      255    .     255     .      255     .      192                                        255 – 192 = 63

 

64,128, 192                                                             Alamat Broadcast:

192.168.10.64                                                                                     192.168.10.63 

192.168.10.128                   Alamat IP Subnet                                   192.168.10.127

                 192.168.10.192                                                                                  192.168.10.191

                                                                            

                                                       

 

192.168.10.64         192.168.10.128           192.168.10.192          

                                                                               

192.168.10.127       192.168.10.191           192.168.10.255

 

 

                                                                   

 

 

 

3.      192.168.10.0 / 30

255.255.255.0                                                                                 32 – 30 = 2

11111111.11111111.11111111.11111100

      255    .     255     .      255     .      252                                        255 – 252 = 3

 

4, 8, 12,16,….252                                                               Alamat Broadcast:

192.168.10.4                                                                                       192.168.10.3 

192.168.10.8                                                                                       192.168.10.7

                 192.168.10.12                    Alamat IP Subnet                                   192.168.10.11

                                                                            

192.168.10.252                                                                                   192.168.10.251

 

192.168.10.3           192.168.10. 8              192.168.10.252          

                                                Sampai dengan                   

192.168.10. 7          192.168.10.11             192.168.10.255

 

 

                                                                   

 

 

 

4.      10.10.10.0 / 29

255.255.255.0                                                                                 32 – 29 = 3

11111111.11111111.11111111.11111000

      255    .     255     .      255     .      240                                        255 – 248 = 7

8, 12, 16, 20,………248

10.10.10.8                                                               Alamat Broadcast: 10.10.10.7

10.10.10.12                         Alamat IP Subnet                                      10.10.10.11

10.10.10.16                                                                                            10.10.10.15

                                                           

10.10.10.248                                                                                           10.10.10.247

 

10.10.10.8               10.10.10.12                 10.10.10.247

                                                Sampai dengan

10.10.10.11             10.10.10.15                 10.10.10.255

 

 

 

 

 

 

 

 

 

 

5.      130.121.10.0 / 27

255.255.255.0                                                                                 32 – 27 = 5

11111111.11111111.11111111.11100000

      255    .     255     .      255     .      224                                        255 – 224 = 31

 

32, 64, 96, 128…….224                                                                 Alamat Broadcast:

130.121.10.32                                                                                     130.121.10.31

130.121.10.64                     Alamat IP Subnet                                   130.121.10.61

                 130.121.10.96                                                                                    130.121.10.95

                 130.121.10.224                                                                                  130.121.10.223

                                                       

 

130.121.10.32         130.121.10.64             130.121.10.224                                                                                                  Sampai dengan

130.121.10.63         130.121.10.95             130.121.10.255