
462 Chapter 11 • Private Addressing and Subnetting Large Networks
Table 11.2 Sample Network Address Analysis
Location # Subnets Interfaces Subnet Total
Unused Unused
Headquarters 1 50 204 204
1 110 144 144
1 190 64 64
1 150 104 104
1 150 104 104
Branches 60 30 224 13,440
WAN Links 60 2 252 15,120
The Headquarters subnets are sized appropriately, even allowing for
some growth. The branch office subnets provide many more addresses
than will actually be used. The biggest waste occurs in the WAN links.
Since the sample network is using point-to-point links between headquar-
ters and the branches, we will never need more than two addresses in each
subnet. If you ...