SUBNETTING


IP address
	Network and host part
	192.168.1.10 = 11000000.10101000.00000001.00001010

Subnet mask
	1=network part/ doesn't change
	0=host part/ changable
	255.255.255.0 = 11111111.11111111.11111111.00000000

network address
	IP    11000000.10101000.00000001.00001010
	mask  11111111.11111111.11111111.00000000
	net   11000000.10101000.00000001.00000000 = 192.168.1.0

broadcast add
	last in network
	when the host part is full of 1
	192.168.1.255

last usable
	broadcast-1

First usable
	network+1