If we don’t subnet and use as our subnet mask then we use all of our IP addresses on one network. This is not an efficient use of our Class C network. For each network you loose two IP address, one for the network and one for the broadcast = = class C mask = = broadcast

thru are valid IP address for the 96 network = – 96 network broadcast

We’ll use the network

is our network and we have 254 total IP addresses Building C – 40 users – 62 hosts – – subnet 1 Building B – 20 users – 30 hosts – – subnet 2 Building A – 08 users – 14 hosts – – subnet 3 Firewall – 02 users – 04 hosts – – subnet 4 subnet is the network is the broadcast subnet is the network is the broadcast subnet is the network is the broadcast subnet is the network is the broadcast is the next usable network