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Subnetting a network/subnetting a subnet

A subnetwork or subnet is a logical subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting.

Subnet table for class C
subnet1248163264128256
host2561286432168421
subnet mask/24/25/26/27/28/29/30/31/32
  1. With the same network ID: 192.168.4.0/24, you are required to get 3 subnets. List each of new network ID, subnet mask, host ID range, # of usable hosts, and broadcast ID. One last question: how many subnets are wasted after subnetting?
Network idsubnet maskhost-id rangeusable hostsbroadcasting id


192.168.4.0

/26

192.168.4.1-192.168.58
62
125.23.200.159


192.168.4.64

/26

192.168.4.65-192.168.126
62
125.23.200.127


192.168.4.128

/26


192.168.4.129-192.168.190
62
125.23.200.191

192.168.4.192

/26

192.168.4.193-192.168.254
62
125.23.200.256

2. You are given a single network ID 125.23.200.128/25, and you are asked to set up three separate subnets for 3 different departments. Your task is to list each new subnet’s network ID, new subnet mask, Host ID Range, # of usable host IDs, and Broadcast ID.

Network ID 125.23.200.128/25 subnetting a subnet

Network idsubnet maskhost-id rangeusable hostsbroadcasting id

125.23.200.128

/27
125.23.200.129-125.23.200.15830
125.23.200.159

125.23.200.160

/27

125.23.200.161-125.23.200.190
30
125.23.200.191

125.23.200.192

/27

125.23.200.193-125.23.200.222
30
125.23.200.223

125.23.200.224

/27

125.23.200.225-125.23.200.254
30
125.23.200.256

References https://www.youtube.com/watch?v=aVTEZHC2wdA

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