DCCNLab2 - Data Communication Computer Networks Instructor...

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Data Communication & Computer Networks Instructor: Riaz Shahzad Malik/Suffian Shiekh/ Zafar Hadier Lab Coordinator: Shoieb Arshad LAB No. 2 Introduction to SUBNETTING Purpose: The lab is intended to familiarize the students with a networking technique of SUBNETTING. At the end of the lab the student must know: • The Purpose of SUBNETTING. • Steps of SUBNETTING. • How to perform SUBNETTING on different IP Classes. • Calculating the ranges of Hosts in the Subnet. • Finding the Broadcast address of the Subnet. • How to make a SUBNET on Linux machines. • How to Broadcast on that Subnet. prompt> ifconfig <interfaceNo> xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx prompt> ifconfig eth0 172.20.6.131 netmask 255.255.248.0 prompt> ping -b <broadcast_ip> Subnetting: In subnetting, a network is divided into smaller subnets with each subnet having its own subnet address. Reasons for Subnetting Imagine a Network Class A with over 16 millions of hosts or a Class B Network with 65 thousand hosts, it is impractical… Most IP address assignments were not used very efficiently.
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