Calculate the Network ID (Identity Network)

Network ID (Identity Network) is an address is used as the identity of a network. Which is often a problem of course in determining the Network ID. This problem often found when configuring Routing. Be it a static routing and dynamic routing on. Where the static routing commands and dynamic routing is required to mention the Network ID (Network Prefix).

This time I will review how to determine the Network ID, which is considered by most students this is a difficult thing. Though it is!

To determine the Network ID formula used is:

Network ID = IP Address Subnet Mask AND

example:

A network consisting of 4 pieces each PC with the address 192.168.3.2, 192.168.3.3, 192.168.3.4 and 192.168.3.5 and the subnet mask used is the default class C subnet mask is 255.255.255.0, then it is a Network ID,

AND 192.168.3.2 255.255.255.0

AND 192.168.3.3 255.255.255.0

AND 192.168.3.4 255.255.255.0

AND 192.168.3.5 255.255.255.0

The fourth address will result in the same network ID is 192.168.3.0, loh kok? How can? yes of course you can, because before the IP Address and Subnet mask in binary converted into 32 bits which are grouped by eight bits, separated by dots.

eg for 192.168.3.4 255.255.255.0 to AND,

11000000.10101000.00000011.00000100 AND 11111111.11111111.11111111.00000000 11000000.10101000.00000011.00000000 result if converted into a dotted decimal 192.168.3.0

How? make it easy? Ok, good luck