SUB NET MASKING And IP Address Classes



SUB NET MASKING

Smaller broadcast domains
More manageable networks
Save IP Addresses
Default Subnet Mask
CLASS A  - 255.0.0.0
CLASS B  - 255.255.0.0
CLASS C  - 255.255.255.0




SUB NET MASKING

4000 Hosts
NET ID – 190.100.0.0
CLASS B
212=4096
D.S.M  - 255.255.0.0
255.255.11110000.00000000
255.255.240.0 is the Sub net
256-240 = 16



IP Address Classes


Class A
N.H.H.H
1-126
0 can not be used as Net ID
127 is reserved for loop back functions
126 Different Networks
16.777.214 Hosts per Network



Class B
N.N.H.H
128-191
The first IP Address is the NET ID
The last IP Address is the Broadcast Address
16.384 Different Networks
65543 Hosts per Network



Class C
N.N.N.H
192-223
The first IP Address is the NET ID
The last IP Address is the Broadcast Address
2.097.152 Different Networks
254 Hosts per Network




CLASS D 
– Used for multicast broadcasts
CLASS E – Experimental addresses not available to the public

1 Comments

Thanks You....

Post a Comment

Thanks You....

Previous Post Next Post