We want you to subnet the allocated IP address such that each subnet can have about 1000 hosts each.
You are required to answer the following questions regarding this subnetted network:
a.	What is the new custom subnet mask? (Write in CIDR format (ie /nn) AND dotted decimal format AND N…N.S….S.H…H format, where N=network, S=subnet and H = host bits)
b.	How many usable subnets will be created?
c.	What will be the maximum number of hosts on any one subnet?
d.	Fill out the following table for the FIRST 3 and LAST 3 USABLE SUBNETS:


Subnet Practice: 107.128.0.0 /9
We want to subnet so it has about 1000 hosts….

a)
	Before:
		NNNNNNNN.SHHHHHHHH.HHHHHHHH.HHHHHHHH
		255.128.0.0
		107.128.0.0 /9
	After:
		NNNNNNNN.SSSSSSSS.SSSSSSHH.HHHHHHHH
		255.255.252.0
		107.128.0.0 /22

b)
	Before:
		2 Subnets
	After:
		(2^14) = 16384 subnets
c)

	Before:
		(2^23 - 2) = 8388606 hosts per subnet
	After:
		(2^10 – 2) = 1022 hosts per subnet


d)
Subnet		First host address		Last host address	Broadcast address
First		107.128.0.1			107.128.3.254		107.128.3.255
Second		107.128.4.1			107.128.7.254		107.128.7.255
Third		107.128.8.1			107.128.11.254		107.128.11.255
Third last	107.128.244.1			107.128.247.254		107.128.247.255
Second last	107.128.248.1			107.128.251.254		107.128.251.255
Last		107.128.252.1			107.128.255.254		107.128.255.255