Calculate IPv$4$ Subnets

Objectives

Part $1$: Determine IPv$4$ Address Subnetting

Part $2$: Calculate IPv$4$ Address Subnetting

Background $/$ Scenario

The ability to work with IPv$4$ subnets and determine network and host information based on a given IP address and subnet mask is critical to understanding how IPv$4$ networks operate. The first part is designed to reinforce how to compute network IP address information from a given IP address and subnet mask. When given an IP address and subnet mask, you will be able to determine other information about the subnet.

$1$ PC $($Windows with Internet access$)$

$$ Optional: IPv$4$ address calculator

Instructions

Fill out the tables below with appropriate answers given the IPv$4$ address, original subnet mask, and new subnet mask.

Problem $1$:

Given:

Host IP Address: $192\mathrm{.}168\mathrm{.}200\mathrm{.}139$

Original Subnet Mask $255\mathrm{.}255\mathrm{.}255\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}255\mathrm{.}224$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Problem $2$:

Given:

Host IP Address: $10\mathrm{.}101\mathrm{.}99\mathrm{.}228$

Original Subnet Mask $255\mathrm{.}0\mathrm{.}0\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}128\mathrm{.}0$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Problem $3$:

Given:

Host IP Address: $172\mathrm{.}22\mathrm{.}32\mathrm{.}12$

Original Subnet Mask $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}224\mathrm{.}0$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Problem $4$:

Given:

Host IP Address: $192\mathrm{.}168\mathrm{.}1\mathrm{.}245$

Original Subnet Mask $255\mathrm{.}255\mathrm{.}255\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}255\mathrm{.}252$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Problem $5$:

Given:

Host IP Address: $128\mathrm{.}107\mathrm{.}0\mathrm{.}55$

Original Subnet Mask $255\mathrm{.}255\mathrm{.}0\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}255\mathrm{.}0$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Problem $6$:

Given:

Host IP Address: $192\mathrm{.}135\mathrm{.}250\mathrm{.}180$

Original Subnet Mask $255\mathrm{.}255\mathrm{.}255\mathrm{.}0$

New Subnet Mask: $255\mathrm{.}255\mathrm{.}255\mathrm{.}248$

Find:

Number of Subnet Bits blank

Number of Subnets Created blank

Number of Host Bits per Subnet blank

Number of Hosts per Subnet blank

Network Address of this Subnet blank

IPv$4$ Address of First Host on this Subnet blank

IPv$4$ Address of Last Host on this Subnet blank

IPv$4$ Broadcast Address on this Subnet blank

Reflection Question

Why is the subnet mask so important when analyzing an IPv$4$ address?

Type your answers here.

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