IP – ADDRESSING

IP – ADDRESSING

1. IP – ADDRESSING IS DIVIDED INTO 2 TYPES : -

1. NET ID : IN ONE NETWORK NET ID MUST BE SAME.

2. HOST ID : EVERY COMPUTER HAVE UNIQUE HOST ID.
EX : - NET ID HOST ID
192.168.100. 10
192.168.100. 20


2. IP – ADDRESS IS DIVIDED INTO 5 CLASSES : -

• CLASS – A : PUBLIC IP – ADDRESS.

• CLASS – B : PUBLIC IP – ADDRESS.

• CLASS – C : PUBLIC IP – ADDRESS.

• CLASS – D : MULTI – CASTING IP – ADDRESS.

• CLASS – E : RESERVED FOR RESEARCH.

A.
B.
C.
D
1. CLASS – A :

NET ID HOST ID

• IN CLASS A , FIRST OCTET IS A NET – ID AND REMAINING ARE HOST –ID.

• IN PLACE OF FIRST OCTET , FIRST SIGNAL IS ON AND REMAINING ARE OFF SIGNALS.

• PLACE OF FIRST OCTET : - { 10000000 } TO BASE 2 = ( 128 ) TO BASE 10.

. ‘ . PLACE OF A : - [ 0 - 127 ].

. ‘ . BETWEEN 0 – 127 IS CLASS A IP – ADDRESS.

• NO.OF HOST IN THE NETWORK : - ( 255 ) WHOLE CUBE OR 2 TO THE POWER OF ( 24 ).

. ’ . 1.67 CRORES OF COMPUTERS

i.e IP- ADDRESS FROM 1.0.0.0 TO 1.255.255.255.

• NO.OF NETWORKS IN CLASS A : - 127 NETWORKS ARE POSSIBLE.

• SUB-NET MASK FOR CLASS A : - 255.0.0.0.


A. B.C. D.
2. CLASS B :
NET ID HOST ID



• IN CLASS B , FIRST 2 OCTET IS NET – ID AND REMAINING ARE HOST – ID.IN PLACE OF FIRST OCTET , FIRST 2 SIGNALS ARE ON SIGNALS AND REMAINING ARE OFF SIGNALS.

• PLACE OF FIRST OCTET : - { 11000000 } TO BASE 2 = ( 192 ) TO BASE 10. PLACE OF A : [ 128 -191 ].

• NO.OF HOST IN NETWORK : - ( 255 ) WHOLE SQAURE OR 2 TO THE POWER OF 16.65,036 HOST COMPUTERS IN ONE NETWORK.

• NO.OF NETWORKS IN CLASS B : - OFF SIGNALS MULTIPLIED BY ON SIGNALS. 255 * 633

• SUBNET MASK FOR CLASS B : - 255.255.0.0



A. B. C.D.
3. CLASS C : -

NET ID HOST ID

• IN CLASS B , FIRST 3 OCTET IS NET – ID AND REMAINING ARE HOST – ID.IN PLACE OF FIRST OCTET , FIRST 3 SIGNALS ARE ON SIGNALS AND REMAINING ARE OFF SIGNALS.

• PLACE OF FIRST OCTET : - { 11100000 } TO BASE 2 = ( 224 ) TO BASE 10. PLACE OF A : [ 192 - 223 ].

• NO.OF HOST IN NETWORK : - ( 255 ).


• NO.OF NETWORKS IN CLASS C : - 2 TO THE POWER OF 21 NETWORKS.

• SUBNET MASK FOR CLASS B : - 255.255.255.0




4. CLASS D : -

• IN CLASS D , NO NET – ID AND HOST – ID ARE AVAILABLE.

• IN PLACE OF FIRST OCTET , FIRST 4 SIGNALS ARE ON SIGNALS AND REMAINING ARE OFF SIGNALS.

•PLACE OF FIRST OCTET : - { 11110000 } TO BASE 2 = ( 240 ) TO BASE 10.PLACE OF A : [ 224 - 239 ].

• IT WILL USE TO BROAD CAST INFORMATION TO ALL CONNECTED TERMINALS.

• IT IS USED FOR VIDEO CONFRESSING.

• IT IS ALSO CALLED AS MULTI-CASTING IP – ADDRESS.







PUBLIC IP – ADDRESS


1. CLASS – A : 10. 0. 0. 0

2. CLASS – B : 172. 16. 0. 0

3. CLASS – C : 192. 168. 0. 0