IP ADDRESSING
TCP /
IP
IANA > INTERNET ASIGN NUMBER AUTHORITY
IP ADDRESSES
CLASS
|
CLASS – A
|
CLASS – B
|
CLASS – C
|
CLASS – D
|
CLASS – E
|
RANGE
|
1 to 126
|
128 to 191
|
192 to 223
|
224 to 239
|
240 to 254
|
Ø Zero ( 0 ) reserve for Network Broadcasting
Ø 127 reserve for Loop Back Address or LAN card testing
Ø 255 reserve for Host Broadcasting also multicasting
CLASS
|
A
|
B
|
C
|
D
|
E
|
START ADDRESS
|
10.0.0.0
|
128.0.0.0
|
192.0.0.0
|
224.0.0.0
|
240.0.0.0
|
FINISH ADDRESS
|
10.255.255.255
|
128.255.255.255
|
192.255.255.255
|
224.255.255.255
|
240.255.255.255
|
USED IN
|
LARGE NETWORK
|
LARGE NETWORK
|
SMALL NETWORK
|
RESERVE FOR MULTICAST
|
RESERVE FOR EXPERIMENT PURPUSE
|
NETWORK ID AND HOST ID -:
CLASS – A :- In which there 1st octet is Network ID and 2nd 3rd
4th octet is Host ID
CLASS – B :- In which there 1st 2nd
octet is Network ID and 3rd and 4th octet is Host ID
CLASS – C :- In which there 1st 2nd
3rd octet is Network ID and 4th octet is Host ID
Number of Network
in Per Class
RANGE
|
CLASS – A
|
CLASS – B
|
CLASS – C
|
No of Network
No of
Host
Subnet
mask
|
(2)7
+
128-2
= 126
(2)24-2
16777216-2=
16777214
255.0.0.0
|
(2) 14
16384-2
=16382
(2)16-2
65536-2=
65534
255.255.0.0
|
(2) 21
2097152-2
= 2097150
(2)8-2
256-2=254
255.255.255.0
|
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