Tabel Subneting [CIDR] [VLSM]

Para netters yang budiman, kalau anda semua mau melakukan subneting, kalau anda bukan berasal dari orang-orang yang computerized dan serius ngopeni angka-angka biner, maka tabel berikut ini merupakan, tabel ampuh, untuk mempersingkat proses penghitungan subnet.
Kita perlu melakukan subneting, jika ingin meningkatkan performa dan keamanan jaringan yang akan kita desain. Jadi subneting biasane mesti di terapkan baik itu dalam jaringan yang berbasis ethernet maupun wireless.

Berikut ini tabel subnet yang dapat anda gunakan :

CIDR Subnet Mask Jumlah Host

/32 255.255.255.255 1
/31 255.255.255.254 2
/30 255.255.255.252 4
/29 255.255.255.248 8
/28 255.255.255.240 16
/27 255.255.255.224 32
/26 255.255.255.192 64
/25 255.255.255.128 128
/24 255.255.255.0 256
/23 255.255.254.0 512
/22 255.255.252.0 1,024
/21 255.255.248.0 2,048
/20 255.255.240.0 4,096
/19 255.255.224.0 8,192
/18 255.255.192.0 16,384
/17 255.255.128.0 32,768
/16 255.255.0.0 65,536
/15 255.254.0.0 131,072
/14 255.252.0.0 262,144
/13 255.248.0.0 524,288
/12 255.240.0.0 1,048,576
/11 255.224.0.0 2,097,152
/10 255.192.0.0 4,194,304
/9 255.128.0.0 8,388,608
/8 255.0.0.0 16,777,216
/7 254.0.0.0 33,554,432
/6 252.0.0.0 67,108,864
/5 248.0.0.0 134,217,728
/4 240.0.0.0 268,435,456
/3 224.0.0.0 536,870,912
/2 192.0.0.0 1,073,741,824
/1 128.0.0.0 2,147,483,648
/0 0.0.0.0 4,294,967,296

Classful Ranges
0.0.0.0 – 127.255.255.255
128.0.0.0 – 191.255.255.255
192.0.0.0 – 223.255.255.255
224.0.0.0 – 239.255.255.255
240.0.0.0 – 255.255.255.255

Reserved Ranges
RFC1918 10.0.0.0 – 10.255.255.255
Localhost 127.0.0.0 – 127.255.255.255
RFC1918 172.16.0.0 – 172.31.255.255
RFC1918 192.168.0.0 – 192.168.255.255

CIDR· Classless interdomain routing was developed to VLSM·

Variable length subnet masks are an arbitrary length provide more granularity than legacy classful addressing; between 0 and 32 bits; CIDR relies on VLSMs to define routes masks expressed in the form /XX are in CIDR notation.

Semoga bermanfaat.