Perkenalan IPv4

• IPv4
  

RFC 791  diperkenalkan pada September 1981 oleh DARPA (Defense Advanced Research Projects Agency)

• Pengalamatan
  

32 bit alamat

total host 2³² = 4294967296 (4 Milyar)

00000000.00000000.00000000.00000000

tiap blok terdiri dari 8 bit (byte/octet)

bernilai dari 0-255 

27	26	25	24	23	22	21	20
128	64	32	16	8	4	2	0

Nilai biner berdasarkan bilangan pangkat 2

Contoh

192 =

27	26	25	24	23	22	21	20
128	64	32	16	8	4	2	0
1	1	0	0	0	0	0	0

00011000 =    16 + 8 = 24

27	26	25	24	23	22	21	20
0	0	0	1	1	0	0	0
0	0	0	16	8	0	0	0

 

 ·         Pembagian Kelas IPv4

1. Kelas A 1-126

A	B	C	D
Network	Host	Host	Host
11111111	00000000	00000000	00000000

Number of networks = 2⁷ = 128

Number of addresses per network = 2²⁴ = banyak 16777216

Contoh :

10.1.2.3/8

2. Kelas B 128-191

A	B	C	D
Network	Network	Host	Host
11111111	11111111	00000000	00000000

Number of networks = 2¹⁴ = 16384

Number of addresses per network = 2²⁴ = 65536

Contoh :

128.1.2.3/16

3. Kelas C 192-223

A	B	C	D
Network	Network	Network	Host
11111111	11111111	11111111	00000000

Number of networks = 2 ²¹ = 2097152

Number of addresses per network = 2⁸ = 256

Contoh :

192.1.2.3/24

·         IP Private

Selain Jenis IP diatas ada IP Private yang digunakan untuk internal

1. Class A 10.0.0.0 - 10.255.255.255
2. Class B 172.16.0.0 - 172.31.255.255
3. Class C 192.168.0.0 192.168.255.255

·         Loopback

       127.X.X.X

·         Auto Config (DHCP)

169.254.X.X

Segitu Dulu dah……….