14 Feb 2020

  • February 14, 2020
  • Amitraj
Subnetting


When a bigger network is divided into smaller networks, in order to maintain security, then that is known as Subnetting. so, maintenance is easier for smaller networks.

                                       OR


Subnetting is a process of dividing a single large network in multiple smaller networks. A single large network is just like a town without any sector and street address. In such a town, a postman may take 3 to 4 days in finding a single address. While if town is divided in sectors and streets, he can easily find any address in less than one hour.



-> Computer networks also follow the same concept. In computer networking, Subnetting is used to divide a large IP network in smaller IP networks known as subnets.



-> A default class A, B and C network provides 16777214, 65534, 254 hosts respectively. Having so many hosts in a single network always creates several issues such as broadcast, collision, congestion, etc.


-> Computers use broadcast messages to access and provide information in network. A broadcast message is an announcement message in computer network which is received by all hosts in network.



Subnetting Table -



Description
Network 1
Network 2
Network 3
Network 4
Network address
192.168.1.0
192.168.1.64
192.168.1.128
192.168.1.192
valid hosts
192.168.1.1 to 192.168.1.62
192.168.1.65 to 192.168.1.126
192.168.1.129 to 192.168.1.190
192.168.1.193 to 192.168.1.254
Broadcast address
192.168.1.63
192.168.1.127
192.168.1.191
192.168.1.255






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